CN115857252A

CN115857252A - Light distribution structure of high-efficiency and high-uniformity auxiliary lighting system

Info

Publication number: CN115857252A
Application number: CN202211056758.8A
Authority: CN
Inventors: 郎欢标
Original assignee: Mikolta Optical Technology Co ltd
Current assignee: Mikolta Optical Technology Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-03-28

Abstract

The application provides a light distribution structure of auxiliary lighting system of high efficiency, high degree of consistency relates to the image auxiliary lighting field. The invention provides a light distribution structure of an auxiliary illumination system with high efficiency and high uniformity, which aims at a large-angle light source array with a luminous angle of 60-180 degrees, a collimating lens array with various structures, a refractive lens array, a refractive element structure of a super-surface refractive lens array and a collimating lens of a diffraction optical DOE structure array, and can greatly shorten the height of a module; according to two technical characteristics of a super-surface refraction lens refraction element and a diffraction optical DOE element, refraction-total reflection free-form surface optics are combined, meanwhile, an auxiliary illumination design scheme of a single-chip high-power light source is also achieved, and in combination with the technical scheme, a light blocking diaphragm of a mask plate, a voice coil motor driving control mechanism and an integrated structure of a collimating lens and an inwards concave curved surface are provided.

Description

Light distribution structure of high-efficiency and high-uniformity auxiliary lighting system

Technical Field

The application relates to the field of image auxiliary lighting, in particular to a light distribution structure of an auxiliary lighting system with high efficiency and high uniformity.

Background

Due to the rapid development of imaging sensors, the number of pixels is more and more, and the resolution is higher and higher. Shooting of small to high pixel mobile terminals and smart phones, and lighting of movie and television equipment, beauty and large scenes, the technical requirements on lighting quality and shadow projection effect are becoming more and more strict. The popularization of wearable equipment and the rise of the meta universe also put higher and higher requirements on auxiliary lighting systems. The technical development of the auxiliary lighting system is most fundamental to improve the brightness of an object to be illuminated, improve a dark shooting environment, and improve image quality. Secondly, the brightness of the shot object is shaped, and the stereoscopic impression of the picture is created. Thirdly, artistic drawing is carried out on the shot object through different lighting operation modes, specific artistic effects are expressed, and high image quality is achieved.

Patent No. 2018204820766 provides a light source of a high-efficient flash lamp lens module patent with uniform light distribution, which is an LED light source with a single chip, a single Fresnel collimating lens is arranged above the light source, and a regulating sheet above a collimating mirror is formed by a plurality of biconvex transparent arrays. In addition, patent No. 20211069681 proposes another light distribution structure for auxiliary lighting and distance measurement and its light distribution method, the light source of this patent is formed by multiple vertical cavity emission laser chip arrays, the angle of the whole light-emitting angle of each microchip is between 5-40 degrees, there is no collimating optical element above the light source of the vertical cavity emission laser chip array. Both of these patents incorporate arrays of beam collimating elements, in a manner that greatly improves the uniformity and optical efficiency of the projected light field. But it is mainly directed to the design of auxiliary light distribution for some specific light sources, and additionally, it is not possible to accurately modulate light for some angles or some specific positions one to one. The prior art mainly modulates light sources with small angles, but for whole columns of light sources with large angles, such as MiniLED (sub-millimeter chip light emitting diode), micro LED (microchip light emitting diode), and single-chip LED, the light emitted by the LED is full-space and is full of the whole 0-180 degrees, and the prior art is insufficient in light distribution efficiency.

Disclosure of Invention

An object of the embodiment of this application is to provide a light distribution structure of auxiliary lighting system of high efficiency, high degree of consistency, it can solve luminous inhomogeneous, the inhomogeneous technical problem of light filling.

The embodiment of the application provides a high-efficient, high degree of consistency's auxiliary lighting system's grading structure, including PCB board, microchip luminescent light source array, light beam collimation component array, plane super surface refraction lens array and transparent substrate, microchip luminescent light source array set up in PCB board top, light beam collimation component array the plane super surface refraction lens array transparent substrate set gradually in microchip luminescent light source array top, the transparent substrate upper end is provided with the diaphragm array, be provided with a plurality of light traps on the diaphragm array.

Preferably, the microchip light source array comprises a plurality of light sources, the light beam collimation element array comprises a plurality of convex lenses, the plane super-surface refraction lens array comprises a plurality of plane super-surface refraction lenses, and the number of the light sources, the convex lenses and the plane super-surface refraction lenses is consistent with that of the light holes.

Preferably, the light source, the convex lens, the planar super-surface dioptric lens and the light hole are vertically aligned one by one.

Preferably, the light source is one or more of a white light band LED and a laser emission tube, a red light band LED and a laser emission tube, a blue light band LED and a laser emission tube, a green light band LED and a laser emission tube, and a near infrared light band LED and a laser emission tube.

Preferably, the diaphragm array is provided with a light shielding layer, and the light shielding layer is made of one or more of a colored light shielding ink layer, a light shielding coating layer, a resin light shielding film or a metal light shielding sheet.

Preferably, the area of the light transmission hole is between 0.0005 and 0.100 square millimeter, and the shape of the light transmission hole is circular or polygonal.

Preferably, a microstructure projection film or a mask plate with a specific pattern can be arranged between the light beam collimation element array and the planar super-surface refraction lens array.

Preferably, the micro-structured projection film or the mask plate may be provided with a plurality of layers.

Preferably, a single one of said light sources is individually controllable.

Preferably, the planar super-surface dioptric lens array is a micro-nano structure arranged in a circular ring shape.

Preferably, the annularly arranged micro-nano structures are nano columns with the same height and different widths, the length of each nano column is a cylinder or a square column with the length of tens of nanometers to hundreds of nanometers, the nano columns are arranged in order according to different sizes, the phase of each annularly arranged micro-nano structure is changed from-pi to + pi or 0 to 2 pi, the phase of the most central ring of each annularly arranged micro-nano structure is changed most slowly, and the diameter of the ring is maximum; the more radially outward the phase changes faster and the narrower the ring array.

The utility model provides a high-efficient, high degree of consistency's auxiliary lighting system's grading structure, includes PCB board, microchip luminescent light source array, light beam collimation component, aspheric surface dioptric lens array, microchip luminescent light source array set up in PCB board top, light beam collimation component aspheric surface dioptric lens array set gradually in microchip luminescent light source array top, the transparent substrate upper end is provided with the diaphragm array, be provided with a plurality of light trap on the diaphragm array.

Preferably, the beam collimating element comprises a plurality of annular serrated fresnel lenses.

Preferably, at least two sawteeth are arranged at the upper end of the annular zigzag fresnel lens, a plurality of convex lenses are arranged on the lower surface of the aspheric dioptric lens array, and a plurality of concave lenses are arranged on the upper surface of the aspheric dioptric lens array.

Preferably, the light beam collimating element comprises a plurality of aspheric lenses, the lower surface of the aspheric dioptric lens array is provided with a plurality of convex lenses, and the upper surface of the aspheric dioptric lens array is planar.

Preferably, the light beam collimating element comprises a plurality of diffractive optical elements, the lower surface of the aspheric refractive lens array is provided with a plurality of convex lenses, and the upper surface of the aspheric refractive lens array is planar.

Preferably, the surface of the diffractive optical element is a multi-layer step-like wavelength-level micro-nano structure arranged in a ring manner.

Preferably, the light beam collimating element is a flat plate, and the lower end of the aspheric dioptric lens array is provided with a plurality of convex lenses which are regularly arranged.

Preferably, the surface of the light beam collimating element is a multi-layer stepped wavelength-level micro-nano structure which is annularly arranged, and a multi-layer platform of the light beam collimating element is used for generating pi/4, pi/8 or pi/16 phases.

Preferably, the phase of the most central ring of the light beam collimating element is 2 pi, the change is slow, and the width of the sawtooth inclined plane is maximum; the more radially outward the phase changes faster and faster, and the width of the sawtooth slope becomes narrower and narrower.

The utility model provides a supplementary lighting system's grading structure of high efficiency, high degree of consistency, includes PCB board, microchip luminous source array, light beam collimation component, super surface refraction lens array and transparent substrate, microchip luminous source array set up in PCB board top, light beam collimation component super surface refraction lens array transparent substrate set gradually in microchip luminous source array top, the transparent substrate upper end is provided with the diaphragm array, be provided with a plurality of light traps on the diaphragm array.

Preferably, a microstructure projection film or a mask plate with a specific pattern can be arranged between the light beam collimation element and the super-surface refraction lens array.

The utility model provides a high-efficient, high degree of consistency's auxiliary lighting system's grading structure, includes light source, diffractive optical element, super surface dioptric lens array, transparent substrate and diaphragm array, diffractive optical element set up in the light source top, super surface dioptric lens array transparent substrate with the diaphragm array set gradually in the diffractive optical element top, be provided with a plurality of light traps on the diaphragm array.

Preferably, the light-emitting area of the light source is more than or equal to 1 square millimeter, and the output power of the light source is more than 1W.

Preferably, the diffractive optical element is a planar optical element.

Preferably, the diffractive optical element is a multi-layer stepped wavelength-level micro-nano structure which is annularly arranged, wherein each step is used for generating pi/4 or pi/8 phase.

Preferably, an active optical field is provided between the diffractive optical element and the super-surface dioptric lens array.

Preferably, the upper and lower surfaces of the transparent substrate are provided with a plurality of convex lenses, and the number of the convex lenses is equal to the number of the light-transmitting holes.

Preferably, a beam collimating element array is arranged between the diffractive optical element and the super-surface dioptric lens array, and a plurality of convex lenses are arranged on the upper surface and the lower surface of the beam collimating element array.

Preferably, the array of beam collimating elements may be provided in plurality.

Preferably, an active light field is disposed below the array of beam collimating elements at the lowermost end.

Preferably, motor assemblies are arranged on two sides of the transparent substrate and used for driving the diaphragm array to move back and forth.

The utility model provides a high-efficient, high degree of consistency's auxiliary lighting system's grading structure, includes PCB board, light source array, light beam collimation component, free-form surface convex lens array and diaphragm array, the light source array set up in on the PCB board, the light beam collimation component the free-form surface convex lens array with the diaphragm array set gradually in light source array top, be provided with a plurality of light traps on the diaphragm array.

The free-form surface convex lens array has different field projection sizes in the X direction and the Y direction.

The lower surface of beam collimating element array is provided with the curved surface that is used for spotlight, the camber and the width of curved surface X and Y direction section contour line are inconsistent, the contour line width broad of curved surface in the X direction, the camber is steeper, the curved surface is shorter, the camber is more gentle at the contour line width of Y direction.

The utility model provides a supplementary lighting system's grading structure of high efficiency, high degree of consistency, includes light source, total reflection type fei nieer collimating lens and diaphragm array, total reflection type fei nieer collimating lens set up in the light source top, the diaphragm array set up in total reflection type fei nieer collimating lens upper end, be provided with a plurality of light traps on the diaphragm array.

The method is characterized in that: the lower end surface of the total-reflection Fresnel collimating lens is sawtooth-shaped, and the upper end surface of the total-reflection Fresnel collimating lens is a concave lens.

The method is characterized in that: an active light field is arranged inside the total reflection type Fresnel collimating lens.

The utility model provides a high-efficient, high degree of consistency's auxiliary lighting system's grading structure, includes a plurality of light sources, a plurality of refraction total reflection lens and diaphragm array, refraction total reflection lens number with the light source number is unanimous, refraction total reflection lens set up in the light source top, the diaphragm array set up in refraction total reflection lens top, the diaphragm array is provided with a plurality of light trap.

Preferably, one side of the refraction and total reflection lens close to the light source is provided with an aspheric collimating surface and a total reflection collimating surface, and the concave surface above the refraction and total reflection lens is provided with a plurality of concave curved surfaces with virtual focuses.

The invention has the beneficial effects that:

the invention provides a light distribution structure of an auxiliary illumination system with high efficiency and high uniformity, which aims at a large-angle light source array with a luminous angle of 60-180 degrees, a collimating mirror array with various structures, a refractive lens array, a refractive element structure of a super-surface refractive lens array and a collimating mirror of a diffractive optical DOE structure array, and can greatly shorten the height of a module; according to two technical characteristics of the super-surface refraction lens refraction element and the diffraction optical DOE element, the refraction-total reflection free-form surface optics is combined, and meanwhile, the auxiliary illumination design scheme of the single-chip high-power light source is also solved. According to the technical scheme, the light blocking diaphragm of the mask plate, the voice coil motor driving control mechanism and an integrated structure of the collimating lens and the concave curved surface are provided. The invention combines the modulation function of the diaphragm array, utilizes the imaging of the light through hole as the functions of projecting the light field and modulating the brightness or the angle of the light field, and adopts a method of mutually overlapping the multi-channel light field projection to realize the uniform illumination of the whole light field. The auxiliary lighting system can be suitable for projection of uniform light and also can be suitable for pattern projection, accurate regulation and control can be realized for certain angles or certain positions of a projected light field, the multi-channel light transmission system is used for transmitting light, when certain channels are shielded or damaged, the uniformity and the shape of the whole projected light field are not influenced, and only brightness and darkness are influenced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a structural cross-sectional view of the present invention;

FIG. 2 is a schematic view of a multi-channel light field stack of the present invention;

FIG. 3 is a schematic view of the optical path of a single channel of the present invention;

FIG. 4 is a schematic view of a light field projection for a single channel of the present invention;

FIG. 5 is a schematic view of the superposition of light field projections for different channels of the present invention;

FIG. 6 is a schematic view of a planar super-surface dioptric lens of the present invention;

FIG. 7 is a cross-sectional view of another embodiment of the present invention;

FIG. 8 is a schematic view of a multi-channel light field overlay for another configuration of the present invention;

FIG. 9 is a schematic view of a single channel light field projection of another configuration of the present invention;

FIG. 10 is a cross-sectional view of yet another construction of the present invention;

FIG. 11 is a schematic view of a multi-channel light field superposition for yet another configuration of the present invention;

fig. 12 is a schematic diagram of a single channel light field projection of yet another configuration of the present invention;

FIG. 13 is a cross-sectional view of yet another embodiment of the present invention;

FIG. 14 is a schematic view of a multichannel light field superposition for yet another configuration of the present invention;

FIG. 15 is a schematic view of a single channel light field projection of yet another configuration of the present invention;

FIG. 16 is a schematic view of the micro-surface structure of the DOE of the present invention;

FIG. 17 is a cross-sectional view of a fifth construction of the present invention;

FIG. 18 is a schematic view of a multi-channel light field superposition for a fifth configuration of the present invention;

FIG. 19 is a schematic diagram of a single-channel light field projection of a fifth configuration of the present invention;

FIG. 20 is a sixth structural view of the present invention;

FIG. 21 is a schematic view of a multi-channel light field superposition for a sixth configuration of the present invention;

FIG. 22 is a schematic diagram of a single-channel light field projection for a sixth configuration of the present invention;

FIG. 23 is a sectional view of a seventh construction of the present invention;

FIG. 24 is a schematic view of a multi-channel light field superposition for a seventh configuration of the present invention;

figure 25 is a schematic representation of a single channel light field projection of a seventh configuration of the present invention;

FIG. 26 is a schematic view of an eighth construction of the present invention;

FIG. 27 is a schematic diagram of an asymmetric light field projection method of an eighth structured light beam collimating element array according to the present invention;

FIG. 28 is a schematic view of a ninth construction of the present invention;

FIG. 29 is a schematic view of a multi-channel light field superposition for a ninth configuration of the present invention;

fig. 30 is a schematic diagram of a single-channel light-field projection of a ninth configuration of the present invention;

FIG. 31 is a schematic view of a multi-channel light field superposition for a ninth configuration of the present invention;

FIG. 32 is a schematic view of an asymmetric light field projection of a single miniature dioptric lens of the present invention;

FIG. 33 is a tenth configuration dispatcher of the present invention;

fig. 34 is a schematic diagram of a single-channel light-field projection of a tenth configuration of the present invention;

FIG. 35 is a schematic view of an asymmetric light field projection of a single free-form concave lens of the present invention;

FIG. 36 is a cross-sectional view of an eleventh construction of the present invention;

FIG. 37 is a schematic view of a light field projection for a single channel of the present invention;

FIG. 38 is a schematic view of a single concave lens light field projection of the present invention;

FIG. 39 is a schematic view of a multi-channel light field superposition of the present invention;

fig. 40 is a schematic view of a light field projection of a single free-form concave lens of the present invention.

The reference numbers are respectively:

PCB board-1, microchip luminous source array-2, light beam collimation component array-3, plane super surface refraction lens array-4, transparent substrate-5, light hole-6, light source-7, convex lens-8, plane super surface refraction lens-9, shading layer-10, light beam collimation component array-11, aspheric surface refraction lens array-12, annular sawtooth Fresnel lens-13, diffraction optical component-14, super surface refraction lens array-15, diaphragm array-16, source light field-17, free-form surface convex lens 8 array-18, total reflection Fresnel collimation lens-19, refraction total reflection lens-20, annular sawtooth Fresnel lens array-21, total reflection Fresnel collimation surface-22.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example one

As shown in fig. 1-6, the light distribution structure of an auxiliary illumination system with high efficiency and high uniformity according to the present invention employs a method of mutually overlapping multi-channel light field projections, which includes: a PCB board 1; the microchip light emitting device comprises a microchip light emitting source array 2, wherein 7 types of light sources of the microchip array are a white light waveband LED and a laser emitting tube, a red light waveband LED and a laser emitting tube, a blue light waveband LED and a laser emitting tube, a green light waveband LED and a laser emitting tube, and a near infrared light waveband LED and a laser emitting tube; an array of beam collimating elements 3; a planar super-surface dioptric lens array 4; a transparent substrate 5; and a transparent substrate 5.

The microchip luminous light source array 2 comprises a plurality of light sources 7, the light beam collimation element array 3 comprises a plurality of convex lenses 8, the plane super-surface refraction lens array 4 comprises a plurality of plane super-surface refraction lenses 9, and the number of the light sources 7, the convex lenses 8, the plane super-surface refraction lenses 9 is consistent with that of the light holes 6.

The light source 7, the convex lens 8, the planar super-surface refractive lens 9 and the light holes 6 are vertically aligned one by one to form the multi-channel light field projection.

As shown in fig. 2, the collimated light field generator is an aspheric light beam collimating element array 3, light rays emitted by each light source 7 of the microchip light source array are collimated by the light beam collimating element array 3 to form light fields of the plurality of channels after being collimated, the light fields are converged by the planar super-surface refractive lens 9, pass through the transparent substrate 5 and are converged into each light transmitting hole 6 of the diaphragm array 16, each projected light field is superposed, and the superposed light fields are uniformly distributed and very soft.

As shown in fig. 3, the single channel light path structure includes a light source 7, a convex lens 8, a planar super-surface dioptric lens 9, a transparent substrate 5, an aperture array 16, and a light-transmissive hole 6. The convex lens 8 collimates the light rays emitted by the light source 7 to form a source light field 17; the planar super-surface dioptric lens 9 converges the collimated light field, passes through the transparent substrate 5 and converges the collimated light field into the light transmission hole 6 of the diaphragm array 16.

The diaphragm array 16, it includes light shield layer 10, the material of this light shield layer 10 is colored light-blocking printing ink, the coating film layer that is in the light, resin film and the metal barn door that is in the light, the area of single light trap 6 is between 0.0005-0.100 square millimeter, the shape of light trap 6 is circular, the quadrangle, the pentagon, the hexagon, the ellipse, the octagon, also can be the polygon of various shapes, it is used for sheltering from the effect that miscellaneous light and modulation project the light field, it is used for sheltering from internal components and parts and blocks unnecessary light, it can promote the aesthetic measure of the naked part of the eye to shelter from internal components, it can realize that certain angles of light field or certain regions realize accurate illuminance regulation and control to remove the position of light trap 6.

In this embodiment, as shown in fig. 4, the light field projection of the single channel, the source light field 17 is between the collimated light rays between the convex lens 8 and the planar super-surface refractor 9, and may be a micro-structured projection film, a mask plate with a specific pattern, or a blank light field without any pattern, the source light field 17 is converged to the position of the light hole 6 by the planar super-surface refractor 9, the light hole 6 may perform stray light shielding and modulation, the source light field 17 is projected to a far position to form a projected light field, and the projected light field and the source light field 17 are in a conjugate object-image relationship.

As shown in fig. 5, the light fields of the different projection channels are superimposed, assuming that the left source light field 17 projects a grid-shaped projection light field, and the right source light field 17 projects a dot matrix projection light field, since all the projection channels have completely identical projection angles of view, the projection light field and the projection light field are completely superimposed together. A projected light field is formed with the combined grid + lattice shown on the right side superimposed together.

The superposition of the multi-channel projected light field can be used for superposition and modulation of different patterns, and if each point of the MicroLED is independently controllable, pattern switching is very flexible.

The superposition of the multi-channel projected light field can be used for uniform light mixing of an auxiliary lighting system, when the source light field 17 is a blank light field without any pattern, even if some positions of the source light field 17 in a single channel are not very uniform, because the projection size and the field angle of each channel are completely consistent, after the projected light fields of different channels are superposed, a very uniform projected light field can be formed on the whole, and the uniformity of the projected light field can generally exceed 95 percent.

In this embodiment, according to the scheme of mutually superimposing the multi-channel light field projections, the planar super-surface dioptric lens array 4 is a micro-nano structure arranged in a ring shape, the micro-nano structure is a nano column with the same height and different widths, the length and width of the nano column is a cylinder, a square column or other micro-nano columns with the length and width of tens of nanometers to hundreds of nanometers, the phase is changed from-pi to + pi or 0-2 pi through the arrangement of the nano columns with different sizes, and each ring is in a phase period. The effect of the planar super-surface refractive lens 9 is that it can realize the focusing effect of the traditional convex lens 8, and only the phase change of the surface of the lens in the traditional convex lens 8 is digitally discretized through the arrangement mode of the micro-nano structure through the thickness change, so that the phase change can be realized on one plane through arrangement, and the super-surface refractive lens can replace the convex lens of the traditional aspheric lens with a thin plane, thereby greatly reducing the thickness of the optical element. The phase of each ring of the micro-nano structure of the planar super-surface dioptric lens 9 is changed from-pi to + pi or 0-2 pi. The phase of the most central ring changes most slowly, and the diameter of the ring is the largest; the phase changes faster and the annular arrangement becomes narrower and narrower the further to the outer side in the radial direction.

Example two

In this embodiment, as shown in fig. 7 to 9, in the light distribution structure of the auxiliary illumination system with high efficiency and high uniformity, a method of mutually overlapping multi-channel light field projections is adopted, and in combination with modulation of the diaphragm array 16, the collimated light field generator may be configured as more than two annular sawtooth-shaped fresnel lens arrays; the dioptric lens which converges the collimated light field to the light hole 6 can be arranged as an aspheric dioptric lens array 12; it comprises a PCB board 1; the microchip light source array 2 comprises a light source 7 of a microchip array, wherein the light source is a white light LED and a laser emission tube, a red light LED and a laser emission tube, a blue light LED and a laser emission tube, a green light LED and a laser emission tube, and a near infrared light LED and a laser emission tube; an annular serrated Fresnel lens array 21; an aspherical dioptric lens array 12; and an array of diaphragms 16.

In this embodiment, the beam collimating element 11; the upper surface is provided with more than two saw teeth.

The light source 7, the light beam collimation element 11, the aspheric dioptric lens array 12 and the diaphragm array 16 are in one-to-one correspondence to form the multi-channel light field projection.

In this embodiment, as shown in fig. 8, the collimated light field generator is an annular serrated fresnel lens array, light rays emitted by each light source 7 of the microchip light source array 2 are collimated by the annular serrated fresnel lens 13 to form light fields of the multiple channels after being collimated, the collimated light fields converge by the aspheric refractive lens array 12 and converge into each light transmitting hole 6 of the diaphragm array 16, each projected light field is superimposed, and the superimposed light fields are uniformly distributed and very soft.

In this embodiment, as shown in fig. 9, the source light field 17 is located between the collimated light rays of the annular serrated fresnel lens array and the aspheric refractive lens array 12, and may be a microstructure projection film or a mask plate having a specific pattern, or a blank light field without any pattern, the source light field 17 converges to the position of the aperture 6 of the light transmission hole 6 through the aspheric refractive lens array 12, the aperture 6 of the light transmission hole passes through the light transmission hole 6 for imaging, the source light field 17 is projected to a far position to form a projected light field, and the projected light field and the source light field 17 are in a conjugate object-image relationship.

EXAMPLE III

As shown in fig. 11-13, the light distribution structure of an auxiliary illumination system with high efficiency and high uniformity according to the present invention adopts a method of mutually overlapping multi-channel light field projections, and combines with the modulation of the diaphragm array 16, and the collimated light field generator can be configured as an aspheric lens array; the dioptric lens which converges the collimated light field to the light hole 6 of the light hole 6 mask plate can also be set as an aspheric dioptric lens array 12 which comprises a PCB plate 1; the LED lamp comprises a microchip light-emitting source array 2, wherein a light source 7 of the microchip light-emitting source array 2 is a white light LED and a laser emission tube, a red light LED and a laser emission tube, a blue light LED and a laser emission tube, a green light LED and a laser emission tube, and a near infrared light LED and a laser emission tube; a beam collimating element 11 (aspherical lens); an aspherical dioptric lens array 12; and an array of diaphragms 16.

The light sources 7 of the microchip light-emitting source array 2, the light beam collimating elements 11, the aspheric dioptric lens array 12 and the diaphragm array 16 are in one-to-one correspondence to form the multichannel light field projection.

As shown in fig. 11, the collimated light field generator is an aspheric collimating lens array, and the light emitted by each light source 7 of the microchip light source array 2 is collimated by the aspheric collimating lens array to form the light fields of the multiple channels. The collimated light field is converged by the aspheric dioptric lens array 12 and converged into each light-transmitting hole 6 of the diaphragm array 16. And each projected light field is superposed, and the superposed light fields are uniformly distributed and very soft.

As shown in fig. 12, the source light field 17, which is located between the aspheric collimating lens array and the aspheric dioptric lens array 12, may be a microstructure projection film or a mask plate with a specific pattern, or may be a blank light field without any pattern, the source light field 17 is converged to the position of the light aperture 6 through the aspheric dioptric lens array 12, the light aperture 6 is imaged through the light aperture 6, and the source light field 17 is projected to a far position to form a projection light field. The projected light field and the source light field 17 are in a conjugate object-image relationship.

Example four

As shown in fig. 13-16, the light distribution structure of an auxiliary illumination system with high efficiency and high uniformity according to the present invention adopts a method of mutually overlapping multi-channel light field projections, and combines with the modulation of the diaphragm array 16, and the collimated light field generator can be set as the light beam collimating element 11; the dioptric lens which converges the collimated light field to the light hole 6 of the light hole 6 mask plate can be set as an aspheric dioptric lens array 12 which comprises a PCB (printed circuit board) 1 of a microchip light source array; the microchip light source array 2 comprises a microchip light source 7, wherein the microchip array is provided with a white light LED and a laser emission tube, a red light LED and a laser emission tube, a blue light LED and a laser emission tube, a green light LED and a laser emission tube, and a near infrared light LED and a laser emission tube; a beam collimating element 11; an aspherical dioptric lens array 12; and an array of diaphragms 16.

The light source 7 of the microchip light source array of the microchip light emitting diode, the light beam collimation element 11, the aspheric dioptric lens array 12 and the diaphragm array 16 are in one-to-one correspondence to form the multi-channel light field projection.

As shown in fig. 14, the collimated light field generator is a light beam collimating element 11, light emitted by each light source 7 of the microchip light source array is collimated by the light beam collimating element 11 to form light fields of the plurality of channels after being collimated, the collimated light fields are converged by the aspheric dioptric lens array 12 to be converged into each light transmitting hole 6 of the diaphragm array 16, each projected light field is superposed, and the superposed light fields are uniformly distributed and very soft light fields.

As shown in fig. 15, the source light field 17, which is between the collimated light rays of the light beam collimating element 11 and the aspheric dioptric lens array 12, may be a microstructure projection film, a mask plate with a specific pattern, or a blank light field without any pattern, the source light field 17 is converged to the position of the light transmission hole 6 through the aspheric dioptric lens array 12, the light transmission hole 6 is imaged through the light transmission hole 6, and the source light field 17 is projected to a far position to form a projection light field. The projected light field and the source light field 17 are in a conjugate object-image relationship.

As shown in fig. 16, the cross section of the surface microstructure of the beam collimating element 11 is shown.

In this embodiment, the beam collimating element 11 is also a planar optical element and is also annularly arranged, and the difference between the beam collimating element 11 and the super-surface dioptric lens is that the beam collimating element is an annularly arranged multi-layer stepped wavelength-level micro-nano structure, and each layer of step is used for generating a phase of pi/4, pi/8 or pi/16 to collimate light incident from the light source 7. The diffractive optical lens has the effects that the focusing effect of the traditional convex lens 8 can be realized, only the phase change of the surface of the traditional convex lens 8 is digitally discretized through the mode of annularly arranging the multilayer micro-nano structures through the phase change of the surface of the lens in the thickness change, so that the phase change can be realized by arranging on one plane, the diffractive optical lens can replace a convex lens of the traditional aspheric lens by using a thin plane, and the thickness of the optical element is greatly reduced. The phase 2 pi of the most central ring of the light beam collimation element 11 changes slowly, and the width of the sawtooth inclined plane is maximum; the more outward in the radial direction, the faster the phase change, and the narrower the width of the sawtooth slope.

EXAMPLE five

As shown in fig. 17 to 19, the light distribution structure of an auxiliary lighting system with high efficiency and high uniformity of the present invention adopts a method of superimposing multiple channels of light field projections, and combines with modulation of the diaphragm array 16, the collimated light field generator, which can be set as the light beam collimating element 11; the dioptric lens for converging the collimated light field to the light hole 6 of the light hole 6 mask plate can be arranged into a super-surface dioptric lens array 15 which comprises a PCB (printed circuit board) 1 of a microchip light source array; the microchip light source array 2 comprises a microchip light source 7, wherein the microchip array is provided with a white light LED and a laser emission tube, a red light LED and a laser emission tube, a blue light LED and a laser emission tube, a green light LED and a laser emission tube, and a near infrared light LED and a laser emission tube; a beam collimating element 11; a super-surface dioptric lens array 15; a transparent substrate 5 to which the super-surface dioptric lens array 15 is attached; and an array of diaphragms 16.

The light sources 7 of the microchip light-emitting source array 2, the light beam collimation element 11 array, the super-surface dioptric lens array 15 and the diaphragm array 16 are in one-to-one correspondence to form the multi-channel light field projection.

As shown in fig. 18, the collimated light field generator is a light beam collimating element 11, light rays emitted by each light source 7 of the microchip light source array 2 are collimated by the light beam collimating element 11 to form light fields of the plurality of channels after being collimated, the collimated light fields are converged by the super-surface dioptric lens array 15 and converged into each light hole 6 of the diaphragm array 16 after passing through the attached transparent substrate 5, each projected light field is superposed, and the superposed light fields are uniformly distributed and very soft.

As shown in fig. 19, the source light field 17, which is located between the light beam collimating element 11 and the super-surface dioptric lens array 15 and can be a micro-structured projection film or a mask plate with a specific pattern or a blank light field without any pattern, passes through the super-surface dioptric lens array 15, converges to the position of the light transmission hole 6 after passing through the transparent substrate 5, and the light transmission hole 6 forms an image through the light transmission hole 6 to project the source light field 17 to a far position to form a projected light field. The projected light field and the source light field 17 are in a conjugate object-image relationship.

EXAMPLE six

The above-mentioned embodiments 1 to 5 are embodiments in which the light source 7 is a microchip light emitting source array 2, and the light source 7 of the microchip array is a microchip white light LED and laser emitting tube, a red light LED and laser emitting tube, a blue light LED and laser emitting tube, a green light LED and laser emitting tube, and a near infrared light LED and laser emitting tube. For the light source 7 with a relatively large light emitting surface of the chip, the method of mutually overlapping multi-channel light field projection is adopted, and the collimating light field light emitter can adopt a single diffraction optical element light beam collimating lens with a large diameter; the dioptric lens which converges the collimated light field and converges the collimated light field into the light hole 6 of the light hole 6 mask plate can be set as a super-surface plane lens and comprises a high-power single-chip LED light source 7 and a diffraction optical element 14; a super-surface dioptric lens array 15; a transparent substrate 5 to which the super-surface dioptric lens array 15 is attached; and an array of diaphragms 16.

In this embodiment, the light emitting surface of the single-chip LED is greater than or equal to 1mm × 1mm, and the output power of the single-chip LED is greater than 1W.

In this embodiment, the diffractive optical element 14 is a planar optical element, which is also annularly arranged, the upper surface of the diffractive optical element is an annularly arranged multi-layer step-shaped wavelength-level micro-nano structure, and each layer of step is used for generating a pi/4 or pi/8 phase to collimate light incident from the light source 7.

In this embodiment, the planar super-surface dioptric lens array 4 is a micro-nano structure arranged in a ring shape, and is attached below a quartz substrate, the micro-nano structure is nano columns with the same height and different widths, the length and width of each nano column is a cylindrical column or a square column with a length of tens of nanometers to hundreds of nanometers or a micro-nano column with other shapes, the transformation of a phase from-pi to + pi is realized through the arrangement of the nano columns with different sizes, and each ring is a phase period. The planar super-surface refractive lens 9 has the effects that the focusing effect of the traditional convex lens 8 can be realized, and only the phase change of the surface of the traditional convex lens 8 is digitally discretized in a micro-nano structure arrangement mode through the thickness change, so that the phase change can be realized on one plane through arrangement. The planar super-surface dioptric lens array 4 converges the collimated light field, passes through a quartz substrate and is focused into a light hole 6 of a diaphragm array 16.

In this embodiment, the high-power single-chip LED (light emitting diode) light source 7, the diffractive optical element 14, the super-surface dioptric lens array 15, and the diaphragm array 16 correspond to each other to form the multi-channel light field projection.

As shown in fig. 21, the light source 7, which is a high power single chip LED (light emitting diode) light source 7, and the collimated light field generator, which is a single diffractive optical element 14. Firstly, light rays emitted by the high-power single-chip LED light source 7 are collimated by the single diffractive optical element 14 with a larger diameter, and a collimated light field with a large diameter is formed after the light rays are collimated. The collimated light field is divided and converged by each unit in the super-surface dioptric lens array 15, and then converged into each light-transmitting hole 6 of the diaphragm array 16 after passing through the transparent substrate 5 attached thereto. And finally superposing each projected light field, wherein the superposed light fields are uniformly distributed and very soft.

As shown in fig. 22, a light ray OA-OB emitted from the center O point of the light emitting surface of the LED chip is collimated by the diffractive optical lens, the collimated light ray is emitted from the regions a 'and B', the emitted light ray is incident on one of the units between the points C and D of the super surface refractive lens array 15 above, the source light field 17, which is located between the collimated light rays a 'C and B' D between the diffractive optical element 14 and the super surface refractive lens array 15, may be a microstructure projection film or a mask plate having a specific pattern, or may be a blank light field without any pattern, the source light field 17 passes through the super surface refractive lens array 15, converges to the light transmission hole 6 at the position P after passing through the points C 'and D' of the transparent substrate 5, and emits along the range between PS and PT, forming a so-called projection light field at a distance. The light transmission hole 6 is used for imaging through the light transmission hole 6, and the source light field 17 is projected to a far position to form a projected light field. The projected light field and the source light field 17 are in a conjugate object-image relationship.

EXAMPLE seven

In this embodiment, for the light source 7 with a relatively large light emitting surface of the chip, the method of mutually overlapping the multi-channel light field projections is adopted, and the collimating light field light emitter may adopt a single diffractive optical element 14 light beam collimating lens with a large diameter; the dioptric lens which converges the collimated light field to the light holes 6 of the light hole 6 mask plate can be arranged into an aspheric lens array which comprises a high-power single-chip LED light source 7 and a diffraction optical element 14; an array of beam collimating elements 3; and a light-transmissive aperture 6 aperture mask array mask.

In this embodiment, the upper and lower surfaces of each unit of the beam collimating element array 3 are convex surfaces, the lower surface is convex, the upper surface is gentle, and the beam collimating element array 3 units correspond to each light hole 6 of the light hole 6 diaphragm in a one-to-one manner. The effect of the array of beam collimating elements 3 is that they converge the collimated light field into each of the light-transmitting apertures 6 of the diaphragm array 16.

In this embodiment, the light source 7 of the high-power single-chip LED, the diffractive optical element 14, the beam collimating element array 3, and the diaphragm array 16 correspond to each other to form the multi-channel light field projection.

As shown in fig. 24, the light source 7 is a high-power single-chip LED light source 7. The collimated light field generator is a single diffractive optical element 14, firstly, light rays emitted by the high-power single-chip LED light source 7 are collimated by the single diffractive optical element 14 with a larger specific diameter, and a collimated light field with a large diameter is formed after collimation. The collimated light field is subjected to region division and convergence through each unit in the light beam collimating element array 3, and converged into each light transmission hole 6 of the diaphragm array 16, and each projected light field is finally superposed, wherein the superposed light field is a uniformly distributed and very soft light field.

As shown in fig. 25, a light ray OA-OB emitted from a point O in the center of the light emitting surface of the LED chip is collimated by the diffractive optical lens, the collimated light ray is emitted from the regions a 'and B', the emitted light ray is incident on one of the units of the upper light beam collimating element array 3 located between the point C and the point D, and the source light field 17, which is located in the collimated light rays a 'C and B' D between the diffractive optical element 14 and the light beam collimating element array 3, may be a micro-structured projection film or a mask having a specific pattern, or may be a blank light field without any pattern. The source light field 17 passes through the beam collimating element array 3, then converges to the light transmission aperture 6 and is stopped at the P position, and exits along the range between PS and PT, forming a so-called projected light field at a distance.

In this embodiment, the light-transmitting hole 6 is used for shielding stray light and modulating a projected light field, and is used for shielding internal components and blocking unnecessary light, the attractiveness of the exposed part can be improved by shielding the internal components, and accurate illuminance regulation and control of certain angles or certain areas of the light field can be realized by moving the position of the light-blocking diaphragm array 16 of the light-transmitting hole 6. The projected light field and the source light field 17 are in a conjugate object-image relationship.

Example eight

According to the light distribution structure of the auxiliary illumination system with high efficiency and high uniformity, a method of mutually overlapping multi-channel light field projection is adopted, and the modulation of the diaphragm array 16 is combined. The light-blocking diaphragm array 16 of the light-transmitting hole 6 is used for blocking stray light and modulating the projected light field, and is used for blocking internal components and blocking unnecessary light, the attractiveness of the visual exposed part can be improved by blocking the internal components, and accurate illuminance regulation and control of certain angles or certain areas of the light field can be realized by moving the position of the light-blocking diaphragm array 16 of the light-transmitting hole 6. The light beam collimation element array 3 for light field projection is a free-form surface light beam collimation element array 3 with different view field projection sizes in X and Y directions, is a VCM voice coil motor assembly and is provided with a voice coil, a magnet and a magnet. In this embodiment, the 6 diaphragm light blocking sheets of light-transmitting hole are connected with the VCM voice coil motor in combination, and by adjusting the current on the coil, the VCM voice coil motor can be controlled to move the 6 diaphragm light blocking sheets of light-transmitting hole, so that the light blocking sheets can be controlled to move in the upper, lower, left, right, upper left, lower left, upper right, lower right, front and back ten directions, thereby realizing the adjustment of illuminance and brightness of the emergent beam at different positions and the control of the irradiation area.

In this embodiment, a method of mutually superimposing multi-channel light field projections is adopted, the light beam collimating element array 3 for light field projection is a free-form surface light beam collimating element array 3 having different field projection sizes in the X and Y directions, and the projection of each projection unit in the X and Y directions is as shown in fig. 27. The curvature and width of the cross-sectional contour line in the X and Y directions of one projection unit in the beam collimating element array 3 are not consistent. The contour line-X of the curved surface in the X direction is wide in width and steep in curvature. After the source light field 17X is projected, the projected light field X has a larger projection angle

Which has a larger projected size. The contour line-Y of the curved surface in the Y direction is shorter in width and smoother in curvature. After the projection of the source light field 17Y, the projected light field Y has a smaller projection angle ≥>

Which has a smaller projected size.

Example nine

In this embodiment, for the light source 7 with a relatively large light emitting surface of the chip, a technical implementation scheme of mutually overlapping multi-channel light field projection is adopted, and the collimated light field light emitter may adopt a single diffractive optical element 14 light beam collimating lens with a large diameter; when the field angle of the projected light field is larger, the projected light field can be arranged into more than two aspheric lens arrays, and the two aspheric lens arrays comprise a high-power single-chip LED light source 7 and a diffraction optical element 14; an array of beam collimating elements 3; an array of beam collimating elements 3; and a light-transmissive aperture 6 aperture mask array mask.

In this embodiment, the diffractive optical element 14 is a planar optical element, which is also annularly arranged, and the upper surface of the diffractive optical element is an annularly arranged multi-layer stepped wavelength-level micro-nano structure, and each layer of step is used for generating a pi/4, pi/8, or pi/16 phase to collimate light incident from the light source 7.

The upper surface and the lower surface of each unit of the beam collimation element array 3 are convex surfaces, the lower surface is convex, and the upper surface is gentle; and the light beam collimating element arrays 3 are in one-to-one correspondence with the light beam collimating element arrays 3, the upper surface and the lower surface of each unit are convex surfaces, the lower surface is convex, the upper surface is gentle, and the light beam collimating element arrays 3 and the units are used for combining to generate a focal length with shorter focal power so as to generate a larger projection view field angle. The light beam collimating element array 3 and the light beam collimating element array 3 correspond to each light transmitting hole 6 of the light transmitting hole 6 diaphragm one by one. Which converges the collimated light field to focus light into each light-transmitting aperture 6 of the aperture array 16 at a shorter focal length.

In this embodiment, the high-power single-chip LED (light emitting diode) light source 7, the diffractive optical element 14, the beam collimating element array 3, and the diaphragm array 16 correspond to each other to form the multi-channel light field projection.

As shown in fig. 29, the light source 7 is a high power single chip LED (light emitting diode) light source 7. The collimated optical field generator is a single diffractive optical element 14. Firstly, light emitted by a high-power single-chip LED light source 7 is collimated by a single diffractive optical element 14 with a larger diameter, and a collimated light field with a large diameter is formed after collimation. The collimated light field is subjected to region division and convergence through the light beam collimating element array 3 and each unit in the light beam collimating element array 3, and converges to each light transmitting hole 6 of the diaphragm array 16. And finally, superposing each projected light field, wherein the superposed light fields are uniformly distributed and very soft light fields.

As shown in fig. 30, a light ray OA-OB emitted from a point O in the center of the light emitting surface of the LED chip is collimated by the diffractive optical lens, the collimated light ray is emitted from the regions a 'and B', the emitted light ray is incident on one of the units located between the point C and the point D of the upper light beam collimating element array 3, and the source light field 17, which is located in the collimated light rays a 'C and B' D between the diffractive optical element 14 and the light beam collimating element array 3, may be a micro-structured projection film or a mask plate having a specific pattern, or may be a blank light field without any pattern. The source light field 17 passes through the beam collimating element array 3 and the combined light-gathering channel of the beam collimating element array 3, converges to the light-transmitting hole 6 at the position of P, and emits along the range between PS and PT, forming a so-called projected light field at a distance.

Example ten

The invention relates to a light distribution structure of an auxiliary lighting system with high efficiency and high uniformity, which adopts a method of mutually overlapping multi-channel light field projection and combines the modulation of a diaphragm array 16. The collimated light field generator may be arranged as an array of beam collimating elements 11; the dioptric lens for converging the collimated light field into the light hole 6 of the light hole 6 mask plate can be arranged as a free-form surface convex lens array 18 with asymmetric light distribution, and the collimating light field is arranged in the free-form surface convex lens array 18The collimated light field generator is a light beam collimation element 11 array, the microchip light emitting source array is a Lambert-distributed large-angle MicroLED, light rays emitted by each light source 7 are collimated by the light beam collimation element 11 array, and light fields of the multiple channels are formed after collimation. The collimated light field is converged by a free-form surface convex lens array 18 of which the aspheric dioptric lens array 12 is asymmetrically distributed, and then converged into each light hole 6 of the diaphragm array 16. After being projected through the light holes 6, each projected light field is an asymmetric rectangular light field, and the angle of view projected in the X direction

Is relatively long, and the angle of view projected in the Y direction is->

Is relatively short. The projected rectangular light fields are overlapped, and the overlapped light fields are uniformly distributed and very soft.

In this embodiment, a method of mutually superimposing multi-channel light field projections is adopted, the light beam collimating element array 3 for light field projection is a free-form surface light beam collimating element array 3 having different field projection sizes in the X and Y directions, and the projection of each projection unit in the X and Y directions is as shown in fig. 32. The lower surface of one projection unit in the beam collimating element array 3 is a curved surface for condensing light, and the curvatures and widths of the cross-sectional contour lines in the X direction and the Y direction are not consistent. The contour line-X of the curved surface in the X direction is wide in width and steep in curvature. After the source light field 17X is projected, the projected light field X has a larger projection angle

Which has a larger projected size. The contour line-Y of the curved surface in the Y direction is shorter in width and smoother in curvature. After the projection of the source light field 17Y, the projected light field Y has a smaller projection angle >>

Which has a smaller projected size. />

EXAMPLE eleven

In this embodiment, for the light source 7 with a relatively large light emitting surface of the chip, the method of mutually overlapping the multi-channel light field projections is adopted, and the collimated light field light emitter may adopt a total reflection fresnel collimating lens with a large diameter; in addition to the above-mentioned embodiment using the convex lens array, the super-surface refractive lens array 15, and the DOE beam collimating element array 3, the light field projection of each channel may use an inward concave free-form surface with a virtual focus to achieve the same light field projection effect as that of the refractive lenses of examples 1 to 10, and the collimated light field is asymmetrically distributed in the X and Y directions according to different divergence angles. The light hole 6 is a field diaphragm, and the light hole 6 is used for intercepting the divergent projection light field and regulating the divergent projection light field into a required shape.

As shown in fig. 33, the light source 7 is a high-power single-chip LED (light emitting diode) light source 7, and the collimated light field generator is a large-diameter total reflection fresnel collimating lens. The lower serrated surface is a total reflection fresnel collimating surface 22. The upper concave surface is the concave free-form surface with the virtual focus, and the collimated light field is asymmetrically distributed according to different divergence angles in the X direction and the Y direction.

In this embodiment, first, light emitted by the single-chip LED light source 7 with high power is collimated by the sawtooth-shaped total reflection fresnel collimating surface 22 to form a large-diameter collimated light field. The collimated light field is subjected to region division through each unit in the concave free-form surface with the virtual focus and is asymmetrically distributed with different divergence angles along the X direction and the Y direction. The aperture array 16 is a field aperture, and cuts the divergent projection field to adjust the field shape to a desired shape, such as a rectangle with clear cut edges. And finally, superposing each projected light field, wherein the superposed light fields are uniformly distributed and very soft asymmetric light fields.

As shown in fig. 34, a light ray OA-OB emitted from a point O at the center of the light emitting surface of the LED chip is collimated by the total reflection fresnel collimating surface 22, and the source light field 17 is located at a position of the collimated light ray above a and B. Collimated light is incident to the upper free-form surface concave lens array, asymmetric light distribution is carried out on the collimated light by the concave surface along the X direction and the Y direction at different divergence angles, and the star shape forms the projected light field. The concave surface has a desired focal point O 'and a virtual focal distance f' from the upper surface.

In this embodiment, the diaphragm array 16 is a field diaphragm, and cuts off the divergent projection light field, and adjusts and controls the divergent projection light field into a desired shape to form a light field with clear cut edges. The projected light field and the source light field 17 are in a conjugate object-image relationship.

In this embodiment, a method of mutually overlapping multi-channel light field projections is adopted, and the concave free-form surface with the virtual focus for light field projection can realize asymmetric projection with different projection sizes in the X and Y directions, as shown in fig. 35. The concave free-form surface has virtual focus Ox and Oy with different positions in X direction and Y direction, and the virtual focus is as follows: fx 'and fy', the two virtual focal points differ by f Δ. The virtual focus in the X and Y directions respectively corresponds to different projection field angles in the X and Y directions

And & ->

Which can form a rectangular projected light field as required.

Example twelve

According to the light distribution structure of the auxiliary illumination system with high efficiency and high uniformity, a method of mutually overlapping multi-channel light field projection is adopted, and the modulation of the diaphragm array 16 is combined. For a high angle light source 7 with multiple microchips, such as a MicroLED or MiniLED, the collimated light field generator can be configured as a refractive-reflective lens array; the collimated light field is projected and distributed, and the collimated light field can be set to be a plurality of concave aspheric surfaces with virtual focuses to realize mixed projection of a plurality of light fields similar to the refractive lenses of the embodiments 1 to 10.

As shown in fig. 36, the light source 7 is a light source 7 with a plurality of microchip LEDs (light emitting diodes). The collimated light field generator is a refraction-total reflection lens 22. One side of the non-spherical collimating surface close to the light source 7 is provided with a non-spherical collimating surface and a total reflection collimating surface. The upper concave surface is the concave curved surface with a plurality of virtual focuses, and the collimated light field is subjected to light distribution with a certain divergence angle.

As shown in fig. 37, first, the light emitted from the microchip LED light source 7 is collimated by the refraction-total reflection lens 22 to form a collimated light field. The collimated light field is diffused through an inwards concave curved surface with a plurality of virtual focuses. And each concave surface of the concave curved surface with a plurality of virtual focuses is provided with one virtual focus, and the distance between the virtual focus and the light-emitting plane is f'.

In this embodiment, the diaphragm array 16 is a field diaphragm, and the divergent projection light field is intercepted and regulated to a desired shape. And finally, superposing each projected light field, wherein the superposed light fields are uniformly distributed and very soft asymmetric light fields.

As shown in fig. 38, the concave free-form surface having a plurality of virtual focuses is provided with one virtual focus for each concave surface, and the virtual focus is at a distance f' from the light exit plane.

EXAMPLE thirteen

In this embodiment, for the light source 7 with a relatively large light emitting surface of the chip, the method of mutually overlapping the multi-channel light field projection is adopted, and the collimated light field light emitter may be configured as a single refraction-total reflection collimating lens; the collimating light field is projected and distributed, and the collimating light field can be set into a plurality of concave aspheric surfaces with virtual focuses; the light field projection of each channel can adopt an inward concave free-form surface with a virtual focus to realize the same light field projection effect of the refraction lenses of the embodiments 1-10, and the collimated light field is asymmetrically distributed in the X direction and the Y direction according to different divergence angles. The light hole 6 is a field diaphragm, and the light hole 6 is used for intercepting the divergent projection light field and regulating the divergent projection light field into a required shape.

As shown in fig. 39, first, light emitted from the single-chip high-power LED light source 71 is collimated by the refraction-total reflection lens 221 to form a collimated light field. The refraction-total reflection lens 221 includes a refraction aspheric collimating surface, a refraction incident surface, and a total reflection collimating surface. The collimated light field is diffused and distributed in the X direction and the Y direction respectively through an inward concave free-form surface with a plurality of virtual focuses above. Each concave surface of the concave free-form curved surface with the virtual focuses is provided with virtual focuses at different positions in the X direction and the Y direction, and the distance between each virtual focus and the light outlet plane is fxy'.

In this embodiment, the diaphragm array 16 is a field diaphragm, and the divergent projection light field is intercepted and regulated to a desired shape. And finally superposing each projected light field, wherein the superposed light fields are uniformly distributed and very soft asymmetric light fields.

In this embodiment, a method of mutually overlapping multi-channel light field projections is adopted, and the concave free-form surface with a virtual focus for light field projection can realize asymmetric projection with different projection sizes in the X and Y directions, as shown in fig. 40. The concave free-form surface has virtual focus Ox and Oy with different positions in X direction and Y direction, and the virtual focus is respectively: fx 'and fy', the two virtual focal points differ by f Δ. The virtual focus points in the X and Y directions respectively correspond to different projection opening angles in the X and Y directions

And & ->

Which can form a rectangular projected light field as required.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a light distribution structure of high-efficient, high homogeneity auxiliary lighting system which characterized in that: super surface dioptric lens array and transparent substrate including PCB board, microchip luminescent light source array, light beam collimation component array, plane, microchip luminescent light source array set up in PCB board top, light beam collimation component array the plane surpasss surface dioptric lens array transparent substrate set gradually in microchip luminescent light source array top, the transparent substrate upper end is provided with the diaphragm array, be provided with a plurality of light trap on the diaphragm array.

2. A light distribution structure for a high efficiency, high uniformity auxiliary lighting system as recited in claim 1, wherein: the microchip light source array comprises a plurality of light sources, the light beam collimation element array comprises a plurality of convex lenses, the plane super-surface refraction lens array comprises a plurality of plane super-surface refraction lenses, and the number of the light sources, the number of the convex lenses, the number of the plane super-surface refraction lenses and the number of the light holes are consistent.

3. A light distribution structure for an efficient, highly uniform auxiliary lighting system as recited in claim 2, wherein: the light source, the convex lens, the planar super-surface refraction lens and the light holes are vertically aligned one by one.

4. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 2, wherein: the light source type is one or more of a white light waveband LED and a laser emission tube, a red light waveband LED and a laser emission tube, a blue light waveband LED and a laser emission tube, a green light waveband LED and a laser emission tube, and a near infrared light waveband LED and a laser emission tube.

5. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 1, wherein: the diaphragm array is provided with a light shielding layer, and the light shielding layer is made of one or more of a colored light shielding ink layer, a light shielding coating layer, a resin light shielding film or a metal light shielding sheet.

6. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 1, wherein: the area of the light hole is 0.0005-0.100 square millimeter, and the shape of the light hole is circular or polygonal.

7. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 2, wherein: individual ones of the light sources are individually controllable.

8. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 1, wherein: the planar super-surface dioptric lens array is a micro-nano structure arranged in a circular ring shape.

9. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 8, wherein: the annularly arranged micro-nano structures are nano columns with the same height and different widths, the length of each nano column is a cylinder or a square column of dozens of nanometers to hundreds of nanometers, the nano columns are arranged in order according to different sizes, the phase of each annularly arranged micro-nano structure is changed from-pi to + pi or 0-2 pi, the phase of the most central ring of each annularly arranged micro-nano structure is changed most slowly, and the diameter of the ring is the largest; the phase changes faster and the annular arrangement becomes narrower and narrower the further to the outer side in the radial direction.

10. A light distribution structure of an auxiliary lighting system with high efficiency and high uniformity is characterized in that: including PCB board, microchip luminescent light source array, light beam collimation component, aspheric surface dioptric lens array, microchip luminescent light source array set up in PCB board top, light beam collimation component aspheric surface dioptric lens array set gradually in microchip luminescent light source array top, the transparent substrate upper end is provided with the diaphragm array, be provided with a plurality of light trap on the diaphragm array.

11. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 10, wherein: the beam collimating element comprises a plurality of annular serrated Fresnel lenses.

12. A light distribution structure for a high efficiency, high uniformity auxiliary lighting system as recited in claim 11, wherein: the sawtooth of annular cockscomb structure fresnel lens upper end is provided with at least two, aspheric surface dioptric lens array lower surface is provided with a plurality of convex lens, aspheric surface dioptric lens array upper surface is provided with a plurality of concave lens.

13. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 10, wherein: the light beam collimation element comprises a plurality of aspheric surface lenses, a plurality of convex lenses are arranged on the lower surface of the aspheric surface refraction lens array, and the upper surface of the aspheric surface refraction lens array is planar.

14. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 10, wherein: the light beam collimation element comprises a plurality of diffraction optical elements, a plurality of convex lenses are arranged on the lower surface of the aspheric refraction lens array, and the upper surface of the aspheric refraction lens array is planar.

15. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 14, wherein: the surface of the diffraction optical element is of a multi-layer step-shaped wavelength-level micro-nano structure which is annularly arranged.

16. A light distribution structure for a high efficiency, high uniformity auxiliary lighting system as recited in claim 10, wherein: the light beam collimation element is in a flat plate shape, and the lower end of the aspheric refraction lens array is provided with a plurality of convex lenses which are regularly arranged.

17. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 10, wherein: the surface of the beam collimating element is of a multi-layer step-shaped wavelength-level micro-nano structure which is annularly arranged, and a multi-layer platform of the beam collimating element is used for generating pi/4, pi/8 or pi/16 phases.

18. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 17, wherein: the phase 2 pi of a ring at the center of the light beam collimation element changes slowly, and the width of the sawtooth inclined plane is maximum; the more radially outward the phase changes faster and faster, and the width of the sawtooth slope becomes narrower and narrower.

19. The utility model provides a light distribution structure of high-efficient, high homogeneity auxiliary lighting system which characterized in that: including PCB board, microchip luminescent light source array, light beam collimation component, super surface refraction lens array and transparent substrate, microchip luminescent light source array set up in PCB board top, light beam collimation component super surface refraction lens array transparent substrate set gradually in microchip luminescent light source array top, the transparent substrate upper end is provided with the diaphragm array, be provided with a plurality of light traps on the diaphragm array.

20. The utility model provides a light distribution structure of high-efficient, high homogeneity auxiliary lighting system which characterized in that: including light source, diffraction optical element, super surface dioptric lens array, transparent substrate and diaphragm array, diffraction optical element set up in the light source top, super surface dioptric lens array transparent substrate with the diaphragm array set gradually in the diffraction optical element top, be provided with a plurality of light trap on the diaphragm array.

21. A light distribution structure for an efficient, uniform auxiliary lighting system as recited in claim 20, wherein: the light emitting area of the light source is more than or equal to 1 square millimeter, and the output power of the light source is more than 1W.

22. A light distribution structure for a high efficiency, high uniformity auxiliary lighting system as recited in claim 20, wherein: the diffractive optical element is a planar optical element.

23. A light distribution structure for an efficient, uniform auxiliary lighting system as recited in claim 20, wherein: the diffraction optical element is a multi-layer step-shaped wavelength-level micro-nano structure which is annularly arranged, wherein each step is used for generating a pi/4 or pi/8 phase.

24. A light distribution structure for a high efficiency, high uniformity auxiliary lighting system as recited in claim 20, wherein: an active light field is arranged between the diffraction optical element and the super-surface dioptric lens array.

25. A light distribution structure for a high efficiency, high uniformity auxiliary illumination system as recited in claim 20, wherein: the upper surface and the lower surface of the transparent substrate are provided with a plurality of convex lenses, and the number of the convex lenses is consistent with that of the light holes.

26. A light distribution structure for a high efficiency, high uniformity auxiliary lighting system as recited in claim 20, wherein: and a beam collimation element array is arranged between the diffraction optical element and the super-surface dioptric lens array, and a plurality of convex lenses are arranged on the upper surface and the lower surface of the beam collimation element array.

27. A light distribution structure for an efficient, uniform auxiliary lighting system as recited in claim 20, wherein: the array of beam collimating elements may be provided in plurality.

28. A light distribution structure for a high efficiency, high uniformity auxiliary lighting system as recited in claim 20, wherein: and an active light field is arranged below the light beam collimation element array at the lowermost end.

29. A light distribution structure for a high efficiency, high uniformity auxiliary lighting system as recited in claim 20, wherein: and motor components are arranged on two sides of the transparent substrate and used for driving the diaphragm array to move back and forth.

30. The utility model provides a light distribution structure of high-efficient, high homogeneity auxiliary lighting system which characterized in that: including PCB board, light source array, light beam collimation component, free-form surface convex lens array and diaphragm array, the light source array set up in on the PCB board, the light beam collimation component the free-form surface convex lens array with the diaphragm array set gradually in light source array top, be provided with a plurality of light traps on the diaphragm array.

31. A light distribution structure for an efficient, uniform auxiliary lighting system as recited in claim 30, wherein: the free-form surface convex lens array has different field projection sizes in the X direction and the Y direction.

32. A light distribution structure for an efficient, uniform auxiliary lighting system as recited in claim 30, wherein: the lower surface of beam collimating element array is provided with the curved surface that is used for spotlight, the camber and the width of curved surface X and Y direction section contour line are inconsistent, the contour line width broad of curved surface in the X direction, the camber is steeper, the curved surface is shorter, the camber is more gentle at the contour line width of Y direction.

33. The utility model provides a light distribution structure of high-efficient, high homogeneity auxiliary lighting system which characterized in that: including light source, total reflection type chenille collimating lens and diaphragm array, total reflection type chenille collimating lens set up in the light source top, the diaphragm array set up in total reflection type chenille collimating lens upper end, be provided with a plurality of light trap on the diaphragm array.

34. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 33, wherein: the lower end surface of the total reflection type Fresnel collimating lens is in a sawtooth shape, and the upper end surface of the total reflection type Fresnel collimating lens is a concave lens.

35. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 33, wherein: the method is characterized in that: the camber and the width of the X of its curved surface of concave lens and Y direction section contour line are inconsistent, the contour line width of curved surface in the X direction is broad, the camber is steeper, the contour line width of curved surface in the Y direction is short, the camber is gentler, wherein X direction and the specific different visual field projection size in Y direction.

36. A light distribution structure of an auxiliary lighting system with high efficiency and high uniformity is characterized in that: the device comprises a plurality of light sources, a plurality of refraction and total reflection lenses and a diaphragm array, wherein the number of the refraction and total reflection lenses is consistent with that of the light sources, the refraction and total reflection lenses are arranged above the light sources, the diaphragm array is arranged above the refraction and total reflection lenses, and the diaphragm array is provided with a plurality of light holes.

37. A light distribution structure for an efficient and uniform auxiliary lighting system as recited in claim 36, wherein: one side of the refraction and total reflection lens, which is close to the light source, is provided with an aspheric collimating surface and a total reflection collimating surface, and the concave surface above the refraction and total reflection lens is provided with a plurality of concave curved surfaces with virtual focuses.