CN221592620U - Projection imaging device and projection lamp - Google Patents

Abstract

The present application relates to a projection imaging apparatus and a projection lamp. The projection imaging apparatus includes: the coherent light source is used for generating incident point-like light; the first optical element is arranged on the light path of the incident point light, and the incident point light is converted into linear light after passing through the first optical element; the rotary optical module comprises a rotary piece and a second optical element connected with the rotary piece, wherein the second optical element can rotate around a preset rotation axis to the light path of linear light under the drive of the rotary piece, and the linear light forms a linear light array after passing through the second optical element; when the second optical element rotates, the incident angle of the linear light on the second optical element changes. Incident point light generated by the coherent light source sequentially passes through the first optical element and the second optical element to obtain a linear light array, and along with the rotation of the second optical element, the projection position of the linear light array on the projection surface can be moved, so that rich imaging effects are created, and the viewing experience of a user is enriched.

Description

Projection imaging device and projection lamp

Technical Field

The present application relates to the field of projection imaging technology, and in particular, to a projection imaging apparatus and a projection lamp.

Background

The existing starry sky lamp adopts laser to irradiate a rotating grating sheet so as to obtain an integrally rotating star field, and the relative distance between light spots in the star field is unchanged, or one grating sheet can be further fixed at a laser emitting port, and the effect of irregular rotation of partial light spots is shown on the basis of the integral rotation of the star field by irradiating two grating sheets. However, both schemes can only realize the rotation movement of the light spot, and the imaging effect is single.

Disclosure of utility model

Based on this, it is necessary to provide a projection imaging apparatus with a relatively rich imaging effect, and also provide a projection lamp comprising the projection imaging apparatus.

A projection imaging apparatus comprising:

a coherent light source for generating incident point-like light;

A first optical element provided on an optical path of the incident point light, the incident point light being converted into linear light after passing through the first optical element; and

The rotating optical module comprises a rotating piece and a second optical element connected with the rotating piece, wherein the second optical element can rotate to the light path of the linear light around a preset rotating shaft under the drive of the rotating piece, and the linear light forms a linear light array after passing through the second optical element; the angle of incidence of the line light on the second optical element changes as the second optical element rotates.

In one embodiment, the first optical element is a refractive optical element or a diffractive optical element; the second optical elements are uniformly distributed on the same circumference taking the preset rotation axis as the center.

In one embodiment, the linear light is in a shape of a "straight" or snowflake or a drop.

In one embodiment, the projection imaging apparatus includes a mirror disposed on an optical path between the coherent light source and the first optical element, and the incident spot light is reflected by the mirror to be incident on the first optical element after changing a direction.

In one embodiment, the mirror is located at the predetermined rotation axis and is fixed relative to the first optical element; the incident spot light reflected by the reflecting mirror is incident on the first optical element in a direction perpendicular to the predetermined rotation axis and perpendicular to a plane in which the first optical element is located.

In one embodiment, the projection imaging apparatus includes a mirror disposed on an optical path between the first optical element and the second optical element, and the linear light is reflected by the mirror to be incident on the second optical element after changing a direction.

In one embodiment, the first optical element is mounted on the coherent light source, and the incident point-like light is incident on the first optical element in a direction perpendicular to a plane in which the first optical element is located; the linear light is reflected by the reflecting mirror and then enters the second optical element along the direction perpendicular to the preset rotating shaft.

In one embodiment, the coherent light source, the first optical element and the rotating optical module together form an optical module, and the optical module has a plurality of optical modules, and the optical modules are distributed on the same circumference at intervals.

In one embodiment, the projection imaging apparatus includes a plurality of driving assemblies, the driving assemblies are in one-to-one correspondence with the optical modules, and the driving assemblies are connected with the rotating members in the optical modules corresponding to the driving assemblies so as to drive the rotating members to rotate; or the projection imaging device comprises a driving assembly, wherein the driving assembly is connected with the rotating parts in the optical modules so as to drive the rotating parts to rotate.

In the projection imaging device, the incident point light generated by the coherent light source is converted into the linear light after passing through the first optical element, the linear light further passes through the second optical element to form the linear light array, and the incident angle of the linear light on the second optical element is changed along with the rotation of the second optical element, so that the projection position of the linear light array on the projection surface is moved, a rich imaging effect is further created, and the viewing experience of a user is also enriched.

A projection lamp comprises the projection imaging device.

The projection lamp can create rich imaging effects under the action of the projection imaging device, and enriches the viewing experience of users.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view of a projection imaging apparatus according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of the projection imaging apparatus shown in FIG. 1 at A-A;

FIG. 3 is a side view of the projection imaging apparatus shown in FIG. 2;

FIG. 4 is a cross-sectional view of a projection imaging apparatus in another embodiment;

FIG. 5 is a side view of the projection imaging apparatus of FIG. 4 from another perspective;

FIG. 6 is a schematic diagram of a projection imaging apparatus according to another embodiment;

FIG. 7 is a side view of the projection imaging apparatus shown in FIG. 6;

FIG. 8 is a top view of a projection imaging apparatus according to yet another embodiment;

FIG. 9 is a side view of the projection imaging apparatus shown in FIG. 8;

FIG. 10 is an image-wise view of the projection imaging apparatus of FIG. 9;

Reference numerals illustrate:

10. A projection imaging device; 100. a coherent light source; 200. a first optical element; 300. rotating the optical module; 310. a rotating member; 320. a second optical element; o, a predetermined rotation axis; 400. a reflecting mirror; 500. a drive assembly; 510. a transmission member; 600. a support plate; 610. a first support base; 620. a second support base; 630. a connecting piece; 10a, optical module.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1 to 10, the present application protects a projection imaging apparatus 10. The projection imaging apparatus 10 can be applied to a projection lamp, which is a lamp for projecting a specified pattern onto a projection surface such as a floor, a wall surface, a ceiling, or the like. The projection lamp may be a LOGO projection lamp or an advertising projection lamp or a starry sky projection lamp, etc.

The projection imaging apparatus 10 includes a coherent light source 100, a first optical element 200, and a rotating optical module 300. Wherein the coherent light source 100 is used for generating incident point-like light. The first optical element 200 is disposed on the optical path of incident spot light, and the incident spot light is converted into linear light after passing through the first optical element 200. The rotating optical module 300 includes a rotating member 310 and a second optical element 320 connected to the rotating member 310, where the second optical element 320 can rotate around a predetermined rotation axis O onto the light path of the linear light under the driving of the rotating member 310, and the linear light forms a linear light array after passing through the second optical element 320. When the second optical element 320 rotates, the incident angle of the linear light on the second optical element 320 changes.

It is understood that the line light is a light beam capable of projecting a line on the projection surface, and the line light array is a light beam capable of projecting a plurality of lines arranged in an array on the projection surface.

In the present application, the linear light is in a shape of a straight line, and the incident angle of the linear light on the second optical element 320 is changed in the process of the rotation element 310 driving the second optical element 320 to rotate, so that the linear light array emitted from the second optical element 320 presents a plurality of straight lines on the projection surface, and the positions of the lines can be moved, thereby presenting the effect of projecting meteor rain.

In other embodiments, the linear light may also be snowflake-shaped, that is, the linear light forms a snowflake shape by surrounding the line, so that the linear light array emitted from the second optical element 320 after passing through the second optical element 320 presents a plurality of snowflakes on the projection surface, and during the rotation of the second optical element 320, the position of the snowflakes moves, so as to present the projection effect of snowflake falling.

In other embodiments, the linear light may also be in a raindrop shape, that is, a shape surrounded by lines, so that the linear light array emitted from the second optical element 320 after passing through the second optical element 320 has a shape of a plurality of raindrops on the projection surface, and during the rotation of the second optical element 320, the position of the raindrops moves, so as to show the projection effect of raindrop. In the projection imaging apparatus 10, the incident point light generated by the coherent light source 100 is first transmitted through the first optical element 200 and then converted into the linear light, the linear light is further transmitted through the second optical element 320 to form the linear light array, and the incident angle of the linear light on the second optical element 320 is changed along with the rotation of the second optical element 320, so that the projection position of the linear light array on the projection surface is moved, thereby creating a rich imaging effect and enriching the viewing experience of the user.

Specifically, in the present application, the coherent light source 100 is a laser generator, so that the incident spot light is a laser. The second optical element 320 is embodied as a starburst diffraction grating. The first optical element 200 may be a refractive optical element or a diffractive optical element. The first optical element 200 is specifically a lenticular lens having a light exit surface with a plurality of lens bars arranged linearly.

In the embodiment shown in fig. 1 to 3, the projection imaging apparatus 10 includes a mirror 400, the mirror 400 is disposed on the optical path between the coherent light source 100 and the first optical element 200, and the incident spot light is reflected by the mirror 400 to change the direction and then is incident on the first optical element 200. It can be understood that when the setting position of the coherent light source 100 is changed because the coherent light source 100 cannot be set at a specific position, the incident point light is reflected by the reflecting mirror 400 to change the irradiation direction, so that the light beam can be incident on the first optical element 200 along a predetermined path, and thus the setting of the reflecting mirror 400 can reduce the requirement on the setting position of the coherent light source 100. Specifically, the reflecting mirror 400 is a plane reflecting mirror 400, and the plane thereof is inclined with respect to the incident point light, so as to reflect the incident point light to change the direction.

In the present application, the reflecting mirror 400 is located at a predetermined rotation axis O and is fixed relatively to the first optical element 200. The incident spot light reflected by the reflecting mirror 400 is incident on the first optical element 200 in a direction perpendicular to the predetermined rotation axis O and perpendicular to the plane in which the first optical element 200 is located. The side of the first optical element 200 facing away from the reflecting mirror 400 is a light emitting surface, the light emitting surface has a plurality of lens bars arranged linearly, and the extending direction of the lens bars is parallel to the predetermined rotation axis O, so that the incident point light becomes linear light parallel to the rotation plane of the rotating member 310 after passing through the first optical element 200.

Specifically, the reflection mirror 400 is one, the incident spot light is incident on the reflection mirror 400 along the predetermined rotation axis O, and after being reflected by the reflection mirror 400, the light beam is emitted along the radial direction of the circle of revolution of the second optical element 320, and is further perpendicularly irradiated onto the first optical element 200. In other embodiments, the incident spot light may not enter along the predetermined rotation axis O, and in this case, the plurality of mirrors 400 may be disposed to sequentially reflect the incident spot light on the optical path of the incident spot light, so as to cooperate together to make the light beam enter the first optical element 200 along the set path.

In the embodiment shown in fig. 4 and 5, the projection imaging apparatus 10 includes a mirror 400, the mirror 400 is disposed on the optical path between the first optical element 200 and the second optical element 320, and the linear light is reflected by the mirror 400 to change the direction and then is incident on the second optical element 320. It will be appreciated that the requirement for the location of the coherent light source 100 and the first optical element 200 may be reduced by reflecting the line light by the mirror 400 to change its direction of illumination. Specifically, the reflecting mirror 400 is a plane reflecting mirror 400, and the plane thereof is inclined with respect to the incident direction of the linear light, so as to reflect the linear light to change the direction.

Specifically, the first optical element 200 is mounted on the coherent light source 100, and the incident spot light is incident on the first optical element 200 in a direction perpendicular to a plane in which the first optical element 200 is located. The linear light is reflected by the reflecting mirror 400 and then enters the second optical element 320 in a direction perpendicular to the predetermined rotation axis O. In this embodiment, the plane of the first optical element 200 is perpendicular to the predetermined rotation axis O, and after the incident point light is incident on the first optical element 200 along the predetermined rotation axis O, the linear light emitted from the first optical element 200 irradiates the mirror 400 along the predetermined rotation axis O, and irradiates the second optical element 320 along the direction perpendicular to the predetermined rotation axis O after being reflected by the mirror 400.

Further, the lens bars of the first optical element 200 extend in a direction perpendicular to the predetermined rotation axis O so that the linear light not reflected by the mirror 400 is perpendicular to the rotation plane of the rotation member 310, and the linear light reflected by the mirror 400 is parallel to the rotation plane of the rotation member 310 and is incident to the second optical element 320.

In the embodiment shown in fig. 6 and 7, the reflecting mirror 400 may be omitted, and at this time, the first optical element 200 is mounted on the coherent light source 100, and the incident spot light irradiates the first optical element 200 in a direction perpendicular to the plane of the first optical element 200. Further, by making the incident spot light exit along the radial direction of the circle of revolution of the second optical element 320 and the extending direction of the lens bars on the first optical element 200 parallel to the predetermined rotation axis O, the incident spot light becomes linear light parallel to the rotation plane of the rotator 310 after passing through the first optical element 200.

As shown in connection with fig. 1 to 7, in some embodiments, there are a plurality of second optical elements 320, and the plurality of second optical elements 320 are uniformly distributed on the same circumference centered on the predetermined rotation axis O. By providing the plurality of second optical elements 320, the plurality of second optical elements 320 are rotated about the predetermined rotation axis O by the rotation member 310, and the linear light is sequentially irradiated onto the plurality of second optical elements 320. In the present application, the plane of the second optical element 320 is parallel to but not coplanar with the predetermined rotation axis O, so that the linear light incident along the radius of the revolution circle of the second optical element 320 can be irradiated onto the second optical element 320 during the rotation of the second optical element 320 with the rotation member 310.

Referring to fig. 8 to 10, in the present application, the coherent light source 100, the first optical element 200 and the rotating optical module 300 together form an optical module 10a, a plurality of optical modules 10a are provided, the plurality of optical modules 10a are distributed on the same circumference at intervals, and a projection effect similar to a space-time tunnel can be generated by the cooperation of the plurality of optical modules 10 a.

In the present application, the projection imaging apparatus 10 includes a driving assembly 500, where the driving assembly 500 is located in a space surrounded by the plurality of optical modules 10a, and the driving assembly 500 is simultaneously connected to the rotating members 310 in the plurality of optical modules 10a to simultaneously drive the plurality of rotating members 310 to rotate. The driving assembly 500 includes a driving motor (not shown) and a driving member 510, the driving member 510 is a worm, and the rotating member 310 is a gear engaged with the driving member 510. The rotating member 310 may be a helical gear, a cylindrical gear, or a turbine.

In other embodiments, a plurality of driving assemblies 500 may be further provided, where a plurality of driving assemblies 500 are in one-to-one correspondence with a plurality of optical modules 10a, and the driving assemblies 500 are connected with the rotating members 310 in the optical modules 10a corresponding thereto to drive the rotating members 310 to rotate. In this manner, a projection effect similar to a space-time tunnel can be generated also under the driving of the plurality of driving assemblies 500.

Specifically, the projection imaging apparatus 10 includes a support plate 600, and the coherent light source 100 and the rotating member 310 are mounted on the support plate 600. Further, a first supporting seat 610 and a second supporting seat 620 may be disposed on the supporting plate 600, the coherent light source 100 is fixedly mounted on the first supporting seat 610, the rotating member 310 is rotatably mounted on the second supporting seat 620, the driving motor is fixedly mounted on the supporting plate 600, and the driving member 510 penetrates through the supporting plate 600 and is engaged with the rotating member 310.

Specifically, for the installation of the first optical element 200, in the embodiment shown in fig. 2, the second supporting seat 620 is fixedly connected with a connecting piece 630 at a position corresponding to the predetermined rotation axis O, the connecting piece 630 penetrates the rotating piece 310, and the reflecting mirror 400 and the first optical element 200 are fixedly installed on the connecting piece 630, so as to achieve relative fixation. In both embodiments shown in fig. 5 and 7, the first optical element 200 is mounted to the coherent light source 100.

The present application also provides a projection lamp comprising the projection imaging apparatus 10 described above. The projection lamp may further include a circuit board through which the light output of the coherent light source 100 and the power output of the driving assembly 500 are controlled. The projection lamp can be a LOGO projection lamp, an advertisement projection lamp, a starry sky projection lamp or the like, can show the projection effect similar to meteor rain or a space-time tunnel, and enriches the watching experience of users.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. A projection imaging apparatus, comprising:

a coherent light source for generating incident point-like light;

A first optical element provided on an optical path of the incident point light, the incident point light being converted into linear light after passing through the first optical element; and

The rotating optical module comprises a rotating piece and a second optical element connected with the rotating piece, wherein the second optical element can rotate to the light path of the linear light around a preset rotating shaft under the drive of the rotating piece, and the linear light forms a linear light array after passing through the second optical element; the angle of incidence of the line light on the second optical element changes as the second optical element rotates.

2. The projection imaging apparatus of claim 1, wherein the first optical element is a refractive optical element or a diffractive optical element; the second optical elements are uniformly distributed on the same circumference taking the preset rotation axis as the center.

3. The projection imaging apparatus of claim 1, wherein the line light is in a "one" shape or a snowflake shape or a drop shape.

4. A projection imaging apparatus according to any one of claims 1 to 3, comprising a mirror disposed on an optical path between the coherent light source and the first optical element, the incident spot light being reflected by the mirror to change direction and then incident on the first optical element.

5. The projection imaging apparatus of claim 4, wherein the mirror is positioned at the predetermined rotation axis and is fixed relative to the first optical element; the incident spot light reflected by the reflecting mirror is incident on the first optical element in a direction perpendicular to the predetermined rotation axis and perpendicular to a plane in which the first optical element is located.

6. A projection imaging apparatus according to any one of claims 1 to 3, comprising a mirror provided on an optical path between the first optical element and the second optical element, the linear light being reflected by the mirror to change direction and then incident on the second optical element.

7. The projection imaging apparatus of claim 6, wherein the first optical element is mounted to the coherent light source, the incident spot light being incident on the first optical element in a direction perpendicular to a plane in which the first optical element is located; the linear light is reflected by the reflecting mirror and then enters the second optical element along the direction perpendicular to the preset rotating shaft.

8. The projection imaging apparatus of claim 1, wherein the coherent light source, the first optical element and the rotating optical module together form an optical module, and a plurality of the optical modules are distributed on the same circumference at intervals.

9. The projection imaging apparatus according to claim 8, wherein the projection imaging apparatus includes a plurality of driving assemblies, the plurality of driving assemblies being in one-to-one correspondence with the plurality of optical modules, the driving assemblies being connected with the rotating members in the optical modules corresponding thereto to drive the rotating members to rotate; or the projection imaging device comprises a driving assembly, wherein the driving assembly is connected with the rotating parts in the optical modules so as to drive the rotating parts to rotate.

10. A projection lamp comprising a projection imaging apparatus according to any one of claims 1 to 9.