CN108663874A - A kind of optical element and bidirectional projection's system - Google Patents
A kind of optical element and bidirectional projection's system Download PDFInfo
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- CN108663874A CN108663874A CN201810338051.3A CN201810338051A CN108663874A CN 108663874 A CN108663874 A CN 108663874A CN 201810338051 A CN201810338051 A CN 201810338051A CN 108663874 A CN108663874 A CN 108663874A
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- optical element
- beamlet
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- light beam
- plane
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/106—Beam splitting or combining systems for splitting or combining a plurality of identical beams or images, e.g. image replication
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The present embodiments relate to digital projection display technology field, a kind of optical element and bidirectional projection's system are disclosed.Wherein, bidirectional projection's system includes projection module and optical element, the projected light beam that the projection module is used to include the first beamlet and the second beamlet to optical element projection, the optical element is used to change the projecting direction of the projected light beam, so that first beamlet is emitted along first direction, second beamlet is emitted in a second direction.In the above manner, the present embodiment can change the direction of projected light beam by optical element, it is at low cost to realize bidirectional projection.
Description
Technical field
The present embodiments relate to digital projection display technology fields, more particularly to a kind of optical element and bidirectional projection
System.
Background technology
With the development of semiconductor technology, portable electronic product becomes more diverse, and function is also all the more abundant so that user
Demand to large screen projection is more and more stronger, and then drives the development of projection arrangement.
Existing projection arrangement is usually projected in one direction to a plane, and user can only watch from the plane in projection
Hold, the angle of viewing projected picture can not be selectively changed according to environment difference and the demand of itself, the form of expression is single, fits
Not extensive enough with property, many occasions are not suitable for the projection arrangement of this kind of single direction projection.For example, the projection side of certain projection arrangement
To for front projected picture can not be watched then user can only watch the projected picture in front in other angles.If
It realizes bidirectional projection, the user of both direction is allow to watch projected picture simultaneously, two can only be installed in different angle
Or more projectors, and projection screen is accordingly installed, to realize bidirectional projection.
Inventor has found that existing optical projection system is by using two or more during realizing the embodiment of the present invention
Projector realizes bidirectional projection, of high cost.
Invention content
The embodiment of the present invention passes through light mainly solving the technical problems that provide a kind of optical element and bidirectional projection's system
The direction that element changes projected light beam is learned, it is at low cost to realize bidirectional projection.
In order to solve the above technical problems, a technical solution used in the embodiment of the present invention is：A kind of bidirectional projection is provided
System, including projection module and optical element, the projection module are used to optical element projection include the first beamlet
With the projected light beam of the second beamlet, the optical element is used to change the projecting direction of the projected light beam, so that described the
One beamlet is emitted along first direction, and second beamlet is emitted in a second direction.
Optionally, the optical element includes the first optical element and the second optical element；First beamlet is incident
To first optical element, and the direction of propagation of first beamlet is changed so that described by first optical element
First beamlet is emitted along the first direction；Second beamlet is incident to second optical element, and by described
Second optical element changes the direction of propagation of second beamlet so that second beamlet is emitted along the second direction.
Optionally, the central optical axis of the optical element be set to first optical element and second optical element it
Between, the central optical axis of the optical element is parallel with the central optical axis of the projected light beam or overlaps；When the projection module to
The optical element projects the projected light beam, and the segment beam that the projected light beam falls on first optical element is described
First beamlet, the part that the projected light beam falls on second optical element are second beamlet.
Optionally, first optical element is equipped with the first transmission plane, the first reflecting surface and first refractive face；Described first
Transmission plane is set to the bottom surface of first optical element, and first transmission plane is used to that first beamlet to be made to be transmitted into,
To be incident to first reflecting surface；First reflecting surface is set to the top surface of first optical element；The first refractive
Face is set to the bottom surface of first optical element, and the first refractive face is for making by described in first reflective surface
First beamlet reflects, and is emitted from the first direction.
Optionally, second optical element is equipped with the second transmission plane, the second reflecting surface and the second plane of refraction；Described second
Transmission plane is set to the bottom surface of second optical element, and second transmission plane is used to that second beamlet to be made to be transmitted into,
To be incident to second reflecting surface；Second reflecting surface is set to the top surface of second optical element；Second refraction
Face is set to the side of second optical element, and second plane of refraction is for making by described in second reflective surface
Second beamlet reflects, and is emitted along the second direction.
Optionally, second optical element is additionally provided with the second reflecting surface, the second transmission plane, third reflecting surface and the second folding
Penetrate face；Second transmission plane is set to the bottom surface of second optical element, and second transmission plane is for making second son
Light beam is transmitted into, to be incident to second reflecting surface；Second reflecting surface is set to the top surface of second optical element；
The third reflecting surface is set to the bottom surface of second optical element, and the third reflecting surface is anti-by described second for reflecting
Penetrate second beamlet of face reflection；Second plane of refraction is set to the side of second optical element, second folding
Face is penetrated for making second beamlet by the third reflective surface reflect, and is emitted along the second direction.
Optionally, first beamlet is emitted to form the first view field by the optical element, second son
Light beam forms the second view field, the first plane where first view field and described second by the optical element
The second plane where view field is orthogonal.
Optionally, bidirectional projection's system further includes driving device, and the driving device connects with the optical element
It connects, the driving device is for driving the optical element to rotate, to change the position of first plane and second plane
It sets.
Optionally, bidirectional projection's system further includes plus lens, the plus lens be set to the projection module with
Between the optical element, the plus lens after so that the projected light beam is converged for being incident to the optical element.
In order to solve the above technical problems, another technical solution used in the embodiment of the present invention is：A kind of optics member is provided
Part, is applied to above-mentioned bidirectional projection's system, and the projection arrangement that the optical element is used to change bidirectional projection's system is thrown
The projecting direction for the projected light beam penetrated, so that the first beamlet of the projected light beam is emitted along first direction, the projected light
Second beamlet of beam is emitted in a second direction.
The advantageous effect of the embodiment of the present invention is：The case where being different from the prior art, the embodiment of the present invention provide a kind of light
Element and bidirectional projection's system are learned, the throwing for including the first beamlet and the second beamlet to optical element projection by projecting module
Shadow light beam, optical element change the projecting direction of projected light beam, so that the first beamlet of projected light beam is emitted along first direction,
Second beamlet of projected light beam is emitted in a second direction, to realize bidirectional projection.Only need an optical element and one
Bidirectional projection can be realized in projection module, at low cost, and using flexible.
Description of the drawings
One or more is implemented to illustrate by corresponding attached drawing, these exemplary illustrations are not constituted
Restriction to embodiment, the element with same reference numbers label is expressed as similar element in attached drawing, unless there are special Shen
Bright, composition does not limit the figure in attached drawing.
Fig. 1 is the structural schematic diagram for bidirectional projection's system that a wherein embodiment of the invention provides；
Fig. 2 is the imaging schematic diagram of bidirectional projection's system in Fig. 1；
Fig. 3 is the structural schematic diagram of the optical element in Fig. 1；
Fig. 4 is the structural schematic diagram of the optical element in Fig. 1；
Fig. 5 is the structural schematic diagram of another embodiment of the optical element in Fig. 1；
Fig. 6 is the structural schematic diagram of another embodiment of the optical element in Fig. 1；
Fig. 7 is the structural schematic diagram for bidirectional projection's system that another embodiment of the present invention provides；
Fig. 8 is the high-level schematic functional block diagram of bidirectional projection's system in Fig. 7.
Specific implementation mode
To facilitate the understanding of the present invention, in the following with reference to the drawings and specific embodiments, the present invention will be described in more detail.
It should be noted that when element is expressed " being fixed on " another element, it can directly on another element or therebetween
There may be one or more elements placed in the middle.When an element is expressed " connection " another element, it can directly be connected
It is connected to another element or may exist one or more elements placed in the middle therebetween.Term used in this specification is " vertical
", " horizontal ", "left", "right", "upper", "lower", "inner", "outside", the instructions such as " bottom " orientation or positional relationship be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than indicates or imply institute
The device or element of finger must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this hair
Bright limitation.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively heavy
The property wanted.
Unless otherwise defined, technical and scientific term all used in this specification is led with the technology for belonging to the present invention
The normally understood meaning of technical staff in domain is identical.It is specific to be intended merely to description for used term in the description of the invention
Embodiment purpose, be not intended to limitation the present invention.Term "and/or" used in this specification includes one or more phases
Any and all combinations of the Listed Items of pass.
In addition, as long as technical characteristic involved in invention described below difference embodiment is not constituted each other
Conflict can be combined with each other.
Existing projection device usually projects in one direction, and user can only watch project content from a direction.Very
In the case of more, this is very inconvenient.For example, in speech, spectators' face projected picture, speaker faces spectators, then gives a lecture
Person and spectators can not see the project content of projected picture simultaneously；In another example in flowing image advertising, consumer is from billboard
All directions come up, can not allow all directions consumer and meanwhile receive advertising information.
Based on this, the embodiment of the present invention proposes a kind of optical element, can lead to projection module composition bidirectional projection system
The projecting direction that optical element changes the projected light beam of projection module transmission is crossed, projected light beam is made to go out in two different directions
It penetrates, to realize bidirectional projection.For example, in speech, projection is projected respectively in the front of spectators and the front lower place of speaker
Content enables spectators and speaker to see project content simultaneously.
Specifically, bidirectional projection's system and optical element will be illustrated by embodiment below.
Embodiment one
Referring to Fig. 1, being the structural schematic diagram for bidirectional projection's system that a wherein embodiment of the invention provides.Such as Fig. 1 institutes
Show, bidirectional projection's system 100 includes projection module 10 and optical element 20.
Wherein, projection module 10 is used to project the projected light for including the first beamlet and the second beamlet to optical element 20
Beam, optical element 20 for changing projected light beam projecting direction so that the first beamlet of projected light beam goes out along first direction
It penetrates, the second beamlet of projected light beam is emitted in a second direction, to realize bidirectional projection.
Project module 10 can be digital light handle (Digita l Light Process i ng, DLP) project module,
The attached silicon of liquid crystal (Liquid Crysta l on Si l icon, LCOS) projects module or liquid crystal (Liquid Crysta l
Di sp l ay, LCD) projection module.Projection module 10 is for projecting projected light beam.When projection module 10 is thrown to optical element 20
Projected light beam is penetrated, projected light beam is divided into the first beamlet and second beamlet two parts, and the first beamlet passes through optical element 20
It being emitted along first direction, and forms the first view field A, the second beamlet is emitted in a second direction by optical element 20, and
Form the second view field B.Preferably, in the present embodiment, as shown in Fig. 2, the first plane S1 where the first view field A
It is orthogonal with the second plane S2 where the second view field B.For example, a desk, bidirectional projection's system 100 are placed in level ground
So that the first view field A is fallen on desktop, the second view field B is fallen on metope, so as to user's energy for both direction
Enough see project content, and the first view field A can be directly displayed at and be sitting in face of the user beside desk, such as tablet
The effect of display.
It is worth noting that the first plane S1 where the first view field A refer to outgoing the first beamlet in
The vertical plane of heart optical axis；The second plane S2 where second view field B refers to vertical with the central optical axis of the second beamlet
Plane.When the first view field A falls into the first plane S1, the real shape of project content reflection of the first view field A, when second
When view field B falls into the second plane S2, the real shape of project content reflection of the second view field B.
It is understood that in some other embodiments, referring again to Fig. 1, bidirectional projection's system 100 can also include
Plus lens 30, plus lens 30 are set between projection module 10 and optical element 20, the central optical axis of plus lens 30 and throwing
The central optical axis of image device 10 overlaps.Plus lens 30 after so that projected light beam is converged for being incident to optical element 20.
20 substantially cylindrical shape of optical element, is the solid optical element made from transparent material, wherein transparent material
Material can be plastics or glass.Optical element 20 is set to the front that projection module 10 is emitted projected light beam, and optical element
20 central optical axis L1 with projection the central optical axis of module 10 it is parallel or overlap so that projection module 10 be emitted projected light beam into
Enter optical element 20.Preferably, in the present embodiment, the central optical axis of the central optical axis L1 of optical element 20 and projection module 10
It overlaps, then the first beamlet and the second beamlet are impartial two parts, are incident on optical element 20 respectively.Wherein, the first light
The horizontal centre line for learning element 21 and the second optical element 22 is parallel with the projection long side of image strip of module 10.
It is understood that in some other embodiments, central optical axis L1 and the projection module 10 of optical element 20
Central optical axis can be with parallel, then the first beamlet and the second beamlet are unequal two parts, is incident on optics member respectively
Part 20.For example, the first beamlet accounts for the one third of projected light beam, the second beamlet accounts for 2/3rds of projected light beam.
Specifically, also referring to Fig. 3 and Fig. 4, optical element 20 includes the first optical element 21 and the second optical element
22.First optical element 21 and the connection of the second optical element 22, the central optical axis L1 of optical element 20 are set to the first optical element
21 and second between optical element 22.In the present embodiment, the first beamlet is incident to the first optical element 21, and by first
Optical element 21 changes the direction of propagation of the first beamlet so that the first beamlet is emitted along first direction；Second beamlet is incident
Change the direction of propagation of the second beamlet so that the second beamlet edge to the second optical element 22, and by the second optical element 22
Second direction is emitted.
Wherein, in the present embodiment, the first optical element 21 and the second optical element 22 are integrally formed, certainly, at it
In his embodiment, the first optical element 21 and the second optical element 22 can also be attached by seamless adhesion, then optics member
The central optical axis of part 20 is located at the joint face of the first optical element 21 and the second optical element 22.Wherein, when projection module 10 to
Optical element 20 projects projected light beam, and the segment beam that projected light beam falls on the first optical element 21 is the first beamlet, projection
The part that light beam falls on the second optical element 22 is the second beamlet.
First optical element 21 is equipped with the first transmission plane 211, the first reflecting surface 212 and first refractive face 213.
Wherein, the first transmission plane 211 is semicircular planform, and the first transmission plane 211 is set to the bottom surface of the first optical element 21,
The central optical axis of first transmission plane 211 is overlapped with the central optical axis L1 of optical element 20.First transmission plane 211 is for making the first son
Light beam is transmitted into, to be incident to the first reflecting surface 212.
It is understood that in some other embodiments, the first transmission plane 211 can be curved surface.When the first transmission plane
211 when being curved surface, and for the first transmission plane 211 to the inner recess of optical element 20, concave point is located at the central optical axis of optical element 20
On L1, projected light beam divergence expression can be transmitted through to the first reflecting surface 212, increase incident angle.
Wherein, the first reflecting surface 212 is semi-circular shape curved surface, and the first reflecting surface 212 is set to the top of the first optical element 21
Face, the central optical axis of the first reflecting surface 212 are overlapped with the central optical axis L1 of optical element 20.First reflecting surface 212 is for reflecting
First beamlet, to change the projecting direction of the first beamlet.
It is understood that in some other embodiments, the first reflecting surface 212 can be the conical surface or plane.When
When one reflecting surface 212 is the conical surface, the first reflecting surface 212 is located to 20 inner recess of optical element, cone point in optical element 20
In heart optical axis L 1, and the cone angle that the conical surface is formed is more than 45 ° and is less than 150 °, the projected light of guarantee the first reflecting surface 212 reflection
Beam can be all emitted from first refractive face 213, without Chong Die with from the first incident beamlet of first refractive face 213；When
When first reflecting surface 212 is plane, the first reflecting surface 212 tilts, and the minimum point of the first reflecting surface 212 and optical element 20
Central optical axis L1 intersection.
Wherein, first refractive face 213 is semi-circular shape plane, and first refractive face 213 is set to the bottom of the first optical element 21
Face, and first refractive face 213 is connected directly around the first transmission plane 211 with the first transmission plane 211.First transmission plane 213
Central optical axis is overlapped with the central optical axis L1 of optical element 20.First refractive face 213 is reflected for making by the first reflecting surface 211
The first beamlet refraction, and make the first beamlet along first direction be emitted.
It is understood that in some other embodiments, first refractive face 213 can also be annular surface.When first
When plane of refraction 213 is annular surface, first refractive face 213 can increase the hair of projected light beam to protruding outside optical element 20
Dissipate angle so that projected light beam is emitted in a ring, and can improve uniform illumination degree.
It is understood that in some other embodiments, the first reflecting surface 212 is coated on the face of optical element 20
Reflection enhancing coating, the first transmission plane 211 and/or first refractive face 213 are coated with anti-reflection film or anti reflection paint.
It is understood that in some other embodiments, the first optical element 21 further includes that First Transition face (is not marked
Show), First Transition face can be plane or curved surface, can there are one face or multiple faces to form.First Transition face is for connecting the
One reflecting surface 212 and the first transmission plane 213.
It is worth noting that in the present embodiment, the bottom surface of the top surface of the first optical element 21 and the first optical element 21
It is oppositely arranged.
In the present embodiment, referring again to Fig. 1, after projecting the projection projected light beam of module 10, the first son of projected light beam
Light beam enters from the first transmission plane 211, is transmitted to the first reflecting surface 212, the first reflecting surface 212 reflects the first beamlet, and makes
It enters first refractive face 213, and first refractive face reflects the first beamlet, and the first beamlet is made to be emitted from first direction, to
Form the first view field A.Wherein, the first party of the first beamlet outgoing can be changed by changing the curvature of the first reflecting surface 212
To.
Second optical element 22 is equipped with the second transmission plane 221, the second reflecting surface 222, third reflecting surface 223 and second and reflects
Face 224.
Wherein, the second transmission plane 221 is semicircular planform, and the second transmission plane 212 is set to the bottom surface of the second optical element 22,
The central optical axis of second transmission plane 221 is overlapped with the central optical axis L1 of optical element 20.Second transmission plane 221 is for making described the
Two beamlets are transmitted into, to be incident to the second reflecting surface.
It is worth noting that in the present embodiment, the second transmission plane 221 is connect with the first transmission plane 211, and second is saturating
Penetrate face 221 and the first transmission plane 211 be the same transmission plane two parts.In some other examples, the second transmission plane 221 with
First transmission plane 211 can be two planes being directly connected to.
It is understood that in some other embodiments, the second transmission plane 221 can be curved surface.When the second transmission plane
221 when being curved surface, and for the second transmission plane 221 to the inner recess of optical element 20, concave point is located at the central optical axis of optical element 20
On L1, projected light beam divergence expression can be transmitted through to the second reflecting surface 222, increase incident angle.
Wherein, the second reflecting surface 222 is set to the top surface of the second optical element 22, is connect with the first reflecting surface 221.Second is anti-
The curvature for penetrating first reflecting surface of curvature 212 in face 222 is identical, and the first reflecting surface 212 and the second reflecting surface 222 form one to optics
The spherical reflective surface that element 20 is recessed, concave point are located on the central optical axis L1 of optical element 20.Second reflecting surface 222 is for reflecting
Second beamlet, to change the projecting direction of the second beamlet.
It is understood that in some other embodiments, the first reflecting surface 212 and the second reflecting surface 222 can be two
The identical spherical reflective surface of a curvature, the concave point position of the concave point position of the first reflecting surface 212 and the second reflecting surface 222 is about optics
The central optical axis L1 of lens 20 is symmetrical, and the focus of the first reflecting surface 212 and the focus of the second reflecting surface 222 are located at optical lens
The central optical axis L1 of mirror 20.First reflecting surface 212 and the second reflecting surface 222 can also be the different spheric reflection of two curvature
Face, as long as the second beamlet that the second reflecting surface 222 reflects can be made to be incident on third reflecting surface 223.
Wherein, third reflecting surface 223 is semi-circular shape, and third reflecting surface 223 is set to the bottom surface of the second optical element 22, and
And third reflecting surface 223 is connected directly around the second transmission plane 221 with the second transmission plane 221.The center of third reflecting surface 223
The centre normal of normal and the second reflecting surface 222 is not parallel.Third reflecting surface 223 is anti-by the second reflecting surface 222 for reflecting
The second beamlet penetrated, with the secondary projecting direction for changing the second beamlet.
Wherein, the second plane of refraction 224 is set to the side of the second optical element 22, wherein the center method of the second plane of refraction 224
The angular range of the centre normal of line and the second reflecting surface 222 is 30 ° to 120 °.Second plane of refraction 224 is for making by third
The second beamlet refraction that reflecting surface 223 reflects, and the second beamlet is made to be emitted in a second direction.
It is understood that in some other embodiments, the second reflecting surface 222, third reflecting surface 223 are close to optics member
Reflection enhancing coating is coated on the face of part 20, the second transmission plane 221 and/or the second plane of refraction 223 are coated with anti-reflection film or anti-reflective coating
Material.
It is understood that in some other embodiments, the second optical element 22 further includes that the second transition face (is not marked
Show), the second transition face can be plane or curved surface, can there are one face or multiple faces to form.Second transition face is for connecting the
Two reflectings surface 222 and the second plane of refraction 224.
It is understood that in some other embodiments, the second optical element 22 further includes that third transition face (is not marked
Show), third transition face can be plane or curved surface, can there are one face or multiple faces to form.Third transition face is for connecting the
Three reflectings surface 224 and the second plane of refraction 224.
It is worth noting that in the present embodiment, the bottom surface of the top surface of the second optical element 22 and the second optical element 22
It is oppositely arranged, the side of the second optical element 22 bottom surface with the top surface of the second optical element 22 and the second optical element 22 respectively
Connection.
In the present embodiment, referring again to Fig. 1, after projecting the projection projected light beam of module 10, the second son of projected light beam
Light beam enters from the second transmission plane 221, is transmitted to the second reflecting surface 222, the second reflecting surface 222 reflects the second beamlet, and makes
It enters third reflecting surface 223, and third reflecting surface 223 reflects the second beamlet, makes it into the second plane of refraction 224, the second folding
It penetrates face 224 and reflects the second beamlet, the second beamlet is made to be emitted from second direction, to form the second view field B.Wherein,
The curvature of the curvature, third reflecting surface 223 that change the second reflecting surface 222 can change the second direction of the second beamlet outgoing.
It is understood that in some other embodiments, third reflecting surface 223 can be omitted.Fig. 5 and Fig. 6 are please referred to,
Second optical element 22 is equipped with the second transmission plane 221, the second reflecting surface 222 and the second plane of refraction 224.Wherein, the second transmission plane
221 shape and structure is same as the previously described embodiments.Second reflecting surface 222 is connect at an angle with the first reflecting surface 221.Second
Reflecting surface 222 to change the projecting direction of the second beamlet, and makes the outgoing side of the second beamlet for reflecting the second beamlet
To with the second beamlet incident direction be in 90 °.Second plane of refraction 224 is set to the side of the second optical element 22, the second plane of refraction
224 are connected directly with the second reflecting surface 222.The folder of the centre normal of the second plane of refraction of centre normal 224 of second reflecting surface 222
Angular region is 30 ° to 120 °.In the present embodiment, after projecting the projection projected light beam of module 10, the second sub-light of projected light beam
Beam enters from the second transmission plane 221, is transmitted to the second reflecting surface 222, the second reflecting surface 222 reflects the second beamlet, and makes it
Into the second plane of refraction 224, the second plane of refraction 224 reflects the second beamlet, and the second beamlet is made to be emitted from second direction, to
Form the second view field B.
It is understood that in some other embodiments, the first view field A of the first beamlet formation, the second son
The shape for the second view field B that light beam is formed can be the same or different, and depend on the shape in 20 each face of optical element.
Such as：First view field A is semi-circular, and the second view field B is rectangle..
Bidirectional projection's system 100 in the present embodiment includes the first sub-light by projecting module 10 to the projection of optical element 20
The projected light beam of beam and the second beamlet, optical element 20 changes the projecting direction of projected light beam, so that the first of projected light beam
Beamlet is emitted along first direction, and the second beamlet of projected light beam is emitted in a second direction, to realize bidirectional projection.Only need
Want a lens and a projection module that bidirectional projection can be realized, it is at low cost, and using flexible.
Embodiment two
Referring to Fig. 7, being a kind of structural schematic diagram of bidirectional projection's system provided in an embodiment of the present invention.As shown in fig. 7,
Bidirectional projection's system 200 includes projection module 10, optical element 20, driving device 40 and controller 50.Wherein, module is projected
10, optical element 20 is identical as projection module 10, the optical element 20 in embodiment one, and details are not described herein again.
Driving device 40 can be motor, and driving device 40 is connect with optical element 20, and driving device 40 is for driving light
It learns element 20 to rotate around central optical axis L1, to change the first plane S1 and the second view field B institutes where the first view field A
The second plane S2 position.For example, when the second view field B tiltedly to spectators when, driving device 40 drive optical element 20
It turns an angle, makes the second view field B face spectators, enable adaptation to the application of a variety of occasions.
Also referring to Fig. 8, controller 50 is attached with driving device 40.Controller 50 may include at least one place
Manage device 51 and memory 52.Processor 51 be the processor with certain logical operation capability, such as microcontroller, microprocessor or
Person CPU etc., the processor 51 can also have one or more processing core.Processor 51 respectively with projection module 10, drive
Dynamic device 40 and memory 52 connect.Wherein, memory 52 can be built in processor 51, can also be external in processor 51
Outside, memory 52 can also be remotely located memory, by network connection handler 51 (in Fig. 8 with memory 52 outside
It is placed in for processor 51 and illustrates).Processor 51 can be connected with memory 52 by bus or other modes, in Fig. 8 with
For being connected by bus.Wherein, memory can be used for storing non-easy as a kind of non-volatile computer readable storage medium storing program for executing
The property lost software program, non-volatile computer executable program and module.Processor 51 is stored in memory 52 by operation
Non-volatile software program, instruction and module, to execute：Control the driving device the rotation of 40 driving optical elements 20.
Wherein, the rotation of 40 driving optical elements 20 is controlled the driving device, specific implementation mode can be：Control is received to refer to
It enables, 40 movements is controlled the driving device according to control instruction, to drive optical element 20 to rotate.For example, as the second view field B
When tiltedly to spectators, user sends control instruction and is controlled to controller 50 according to control instruction after controller 50 receives control instruction
Driving device 40 moves, and driving device 40 drives optical element 20 to turn an angle, to make second view field's B faces see
It is many.In another example when launching advertisement, it is assumed that the stream of people in direct north and due east direction changes over time and changes, early morning due north
The stream of people in direction is relatively more, and the stream of people in due east direction is less；The stream of people of dusk direct north is less, and the stream of people in due east direction
It is more；Then controller 50 makes the second view field B towards direct north, in dusk control driving in the morning according to control instruction
Device 40 rotates 90 ° to due east direction, makes the second view field B towards due east direction, so as to adjust the position that advertisement is launched, energy
It enough launches advertisement and obtains better effect.
It is understood that in some other embodiments, controller 50 is also connect with projection module 10.Controller 50 is also
For receiving project content, project content is handled, and is sent to projection module 10.For example, working as bidirectional projection's system 200
When needing to project identical project content, i.e. the content of the first view field A and the second view field B is identical, then controller 50
After receiving project content X, project content X is replicated and spliced, generates treated project content XX, treated
When project content XX is cast out by bidirectional projection's system 200, the first view field A shows project content X, the second view field
B shows project content X.
It is understood that in some other embodiments, bidirectional projection's system 200 further includes shell (not shown), light
The side that element 20 is set to shell is learned, projection module 10, driving device 40 and controller 50 are contained in shell.Wherein, optics member
Part 20 is attached by being detachably connected with shell, such as can be to be threadedly coupled, or clamping connection etc..User
Optical element 20 can be removed according to the difference of application places, when that need not realize bidirectional projection, realize common list
To projection, or other optical elements are changed, to reach the benefit of a variety of usages.
It should be noted that bidirectional projection's system 200 in this present embodiment, the content of projection can be static letter
Breath, or dynamic rotary information.Wherein, dynamic rotary information enables to the user of all directions that can be seen by timesharing
See that the content of different piece understands complete project content.
It should be noted that bidirectional projection's system 200 in the present embodiment can be applied to a variety of places and scale, Ke Yigen
Miniaturization or enlargement design are carried out according to practical application, such as：The Condoms such as room are swum in some coffee shops, bar, table,
Bidirectional projection's system 200 is placed in desktop, projected image project respectively on the table on wall, to show that some interactions are small
Game；Or bidirectional projection's system 200 is placed in large-scale square, it realizes interactive advertising projection, meets multi angle view.
Bidirectional projection's system 200 in the present embodiment includes driving device 40 and controller 50 so that 20 energy of optical element
Enough rotations, to change the second plane S2's where the first plane S1 and the second view field B where the first view field A
Position so that bidirectional projection's system 200 can be suitable for more occasions.
It should be noted that the preferable embodiment of the present invention is given in the specification and its attached drawing of the present invention, but
It is that the present invention can be realized by many different forms, however it is not limited to embodiment described in this specification, these realities
Mode is applied not as the additional limitation to the content of present invention, the purpose of providing these embodiments is that making in disclosure of the invention
The understanding of appearance is more thorough and comprehensive.Also, above-mentioned each technical characteristic continues to be combined with each other, and forms the various realities not being enumerated above
Mode is applied, the range of description of the invention record is accordingly to be regarded as；Further, for those of ordinary skills, Ke Yigen
It is improved or converted according to above description, and all these modifications and variations should all belong to the protection of appended claims of the present invention
Range.
Claims (10)
1. a kind of bidirectional projection's system, which is characterized in that including projection module and optical element, the projection module is used for institute
It states optical element and projects the projected light beam for including the first beamlet and the second beamlet, the optical element is for changing the throwing
The projecting direction of shadow light beam, so that first beamlet is emitted along first direction, second beamlet goes out in a second direction
It penetrates.
2. bidirectional projection's system according to claim 1, which is characterized in that the optical element includes the first optical element
With the second optical element；
First beamlet is incident to first optical element, and changes first son by first optical element
The direction of propagation of light beam is so that first beamlet is emitted along the first direction；
Second beamlet is incident to second optical element, and changes second son by second optical element
The direction of propagation of light beam is so that second beamlet is emitted along the second direction.
3. bidirectional projection's system according to claim 2, which is characterized in that
When the projection module projects the projected light beam to the optical element, the projected light beam falls on first optics
The segment beam of element is first beamlet, and the part that the projected light beam falls on second optical element is described the
Two beamlets.
4. bidirectional projection's system according to claim 3, which is characterized in that first optical element is equipped with the first transmission
Face, the first reflecting surface and first refractive face；
First transmission plane is set to the bottom surface of first optical element, and first transmission plane is for making first sub-light
Beam is transmitted into, to be incident to first reflecting surface；
First reflecting surface is set to the top surface of first optical element；
The first refractive face is set to the bottom surface of first optical element, and the first refractive face is for making by described first
First beamlet of reflective surface reflects, and is emitted from the first direction.
5. bidirectional projection's system according to claim 3 or 4, which is characterized in that second optical element is equipped with second
Transmission plane, the second reflecting surface and the second plane of refraction；
Second transmission plane is set to the bottom surface of second optical element, and second transmission plane is for making second sub-light
Beam is transmitted into, to be incident to second reflecting surface；
Second reflecting surface is set to the top surface of second optical element；
Second plane of refraction is set to the side of second optical element, and second plane of refraction is for making by described second
Second beamlet of reflective surface reflects, and is emitted along the second direction.(embodiment of primary event, is wanted here
Prominent, the second reflecting surface is different with the first reflecting surface of 4 description of power, and then makes first direction and second direction difference).
6. bidirectional projection's system according to claim 3 or 4, which is characterized in that second optical element is additionally provided with
Two reflectings surface, the second transmission plane, third reflecting surface and the second plane of refraction；
Second transmission plane is set to the bottom surface of second optical element, and second transmission plane is for making second sub-light
Beam is transmitted into, to be incident to second reflecting surface；
Second reflecting surface is set to the top surface of second optical element；
The third reflecting surface is set to the bottom surface of second optical element, and the third reflecting surface is for reflecting by described the
Second beamlet of two reflective surfaces；
Second plane of refraction is set to the side of second optical element, and second plane of refraction is for making by the third
Second beamlet of reflective surface reflects, and is emitted along the second direction.
7. bidirectional projection's system according to claim 1, which is characterized in that first beamlet is by optics member
Part is emitted to form the first view field, and second beamlet forms the second view field by the optical element, and described the
The second plane where the first plane and second view field where one view field is orthogonal.
8. bidirectional projection's system according to claim 7, which is characterized in that bidirectional projection's system further includes driving dress
It sets, the driving device is connect with the optical element, and the driving device is for driving the optical element to rotate, to change
The position of first plane and second plane.
9. according to claim 1-8 any one of them bidirectional projection system, which is characterized in that bidirectional projection's system is also wrapped
Plus lens is included, the plus lens is set between the projection module and the optical element, and the plus lens is for making
It is incident to the optical element after the projected light beam convergence.
10. a kind of optical element is applied to claim 1-9 any one of them bidirectional projection system, which is characterized in that described
Optical element is used to change the projecting direction of the projected light beam of the projection arrangement projection of bidirectional projection's system, so that the throwing
First beamlet of shadow light beam is emitted along first direction, and the second beamlet of the projected light beam is emitted in a second direction.
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| CN201810338051.3A CN108663874A (en) | 2018-04-16 | 2018-04-16 | A kind of optical element and bidirectional projection's system |
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| CN201810338051.3A CN108663874A (en) | 2018-04-16 | 2018-04-16 | A kind of optical element and bidirectional projection's system |
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Application publication date: 20181016 |