CN107015430A - 3D projecting devices and 3D projection systems - Google Patents
3D projecting devices and 3D projection systems Download PDFInfo
- Publication number
- CN107015430A CN107015430A CN201710350636.2A CN201710350636A CN107015430A CN 107015430 A CN107015430 A CN 107015430A CN 201710350636 A CN201710350636 A CN 201710350636A CN 107015430 A CN107015430 A CN 107015430A
- Authority
- CN
- China
- Prior art keywords
- polarization
- light
- film set
- optic film
- projection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
- G03B35/26—Stereoscopic photography by simultaneous viewing using polarised or coloured light separating different viewpoint images
Abstract
The present invention provides a kind of 3D projecting devices and 3D projection systems, and wherein device includes two 3D projection equipments, and each equipment includes polarization beam splitter, at least one reflector, the first optic film set and at least one second optic film set；Polarization beam splitter is used to incident light being divided into a branch of polarization transmission light and at least a branch of polarized reflection light；Polarization transmission light passes through the first optic film set；Reflector is used to reflect the polarized reflection light of polarization beam splitter, and the polarized reflection light after reflection passes through the second optic film set；Rotatory polarization clockwise is propagated out by the first optic film set and each second optic film set of the first 3D projection equipments, rotatory polarization counterclockwise is propagated out by the first optic film set and each second optic film set of the 2nd 3D projection equipments.By the 3D projecting devices and 3D projection systems in the present invention, the 3D projection equipment ray wastes in correlation technique, the problem of light propagation efficiency is low can solve the problem that.
Description
Technical field
The present invention relates to optical technical field, in particular to a kind of 3D projecting devices and 3D projection systems.
Background technology
With the development of 3D Display Techniques, increasing occasion needs to show 3D images, each current 3D image projector
The projection of 3D images is realized by projector and 3D projection equipments mostly in place.
In correlation technique, a projector and a 3D projection equipment constitute a 3D projection unit, 3D projection equipments position
In going out on light path for projector, wherein, 3D projection equipments include the polarizer and wave plate being arranged in order, and polarizer is close to projection
The light-emitting window of machine, wave plate and the screen in 3D image projectors place are oppositely arranged.In one 3D projection unit, the emergent light of projector
Line is injected after 3D projection equipments, when propagating to polarizer, and some light occurs to reflect and propagate to outside on the surface of polarizer,
Residual ray is transmitted at polarizer, and transmitted ray propagates to wave plate, by wave plate transmit after form circularly polarized light (following letter
Referred to as rotatory polarization), the rotatory polarization is finally propagated in screen.In 3D image projectors place, obtained by two 3D projection units
To the different rotatory polarization in two beam polarization directions, the two beams rotatory polarization collective effect forms projecting images in screen, and user passes through
Projecting images in special 3D glasses viewing screen, it becomes possible to watch the image with 3D effect.
Inventor has found under study for action, in correlation technique, due to projector emergent ray 3D projection equipments polarization
Reflected at piece, and reflection light is not transmitted at screen, therefore there is light wave in the 3D projection equipments in correlation technique
The problem of taking, light propagation efficiency is low.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of 3D projecting devices and 3D projection systems, to solve
3D projection equipment ray wastes in correlation technique, the problem of light propagation efficiency is low.
In a first aspect, the embodiments of the invention provide a kind of 3D projecting devices, including：First 3D projection equipments and the 2nd 3D
Projection equipment, the first 3D projection equipments and the 2nd 3D projection equipments include：Polarization beam splitter, at least one is anti-
Tabula rasa, the first optic film set and at least one second optic film set；In the first 3D projection equipments and the 2nd 3D
In projection equipment, the polarization beam splitter, for incident light to be divided into a branch of polarization transmission light and at least a branch of reflection of polarization
Light；First optic film set is located on the propagation path of the polarization transmission light of the polarization beam splitter, and the polarization is saturating
Light is penetrated through first optic film set；On the propagation path of every beam polarized reflection light of the polarization beam splitter,
A reflector is provided with, on the propagation path of the reflected light of each reflector, one described is provided with
Two optic film sets；The reflector, reflects for the polarized reflection light to the polarization beam splitter, the institute after reflection
Polarized reflection light is stated through second optic film set；By the first optic film set of the first 3D projection equipments and every
Individual second optic film set propagates out rotatory polarization clockwise, by the first optic film set of the 2nd 3D projection equipments and
Each second optic film set propagates out rotatory polarization counterclockwise.
With reference in a first aspect, the embodiments of the invention provide first aspect the first possible embodiment, wherein, it is described
Reflector is plane reflector；In the first 3D projection equipments and the 2nd 3D projection equipments, the polarization spectro member
Convex lens and concavees lens are disposed between part and first optic film set, the polarization transmission light sequentially passes through described
Convex lens, the concavees lens and first optic film set.
With reference in a first aspect, the embodiments of the invention provide second of possible embodiment of first aspect, wherein, it is described
Reflector is the reflector of curvature-adjustable.
With reference in a first aspect, the embodiments of the invention provide first aspect the third possible embodiment, wherein, it is described
First optic film set includes the first quarter-wave plate, and the polarization transmission light passes through first quarter-wave plate；Institute
Stating the second optic film set includes 1/2nd wave plates and the second quarter-wave plate, and 1/2nd wave plate is positioned at described
Between reflector and second quarter-wave plate, the polarized reflection light after reflection sequentially passes through 1/2nd ripple
Piece and second quarter-wave plate.
The third possible embodiment with reference to first aspect, the embodiments of the invention provide the 4th kind of possibility of first aspect
Embodiment, wherein, the optical axis of the first quarter-wave plate of the first 3D projection equipments and the polarization transmission light
Polarization direction is in angle of 45 degrees；The optical axis of first quarter-wave plate of the 2nd 3D projection equipments and the polarization transmission light
Polarization direction into 135 degree of angles；The optical axis of 1/2nd wave plates of the first 3D projection equipments and the 2nd 3D projections
The optical axis of 1/2nd wave plates of equipment, with the polarization direction of the polarized reflection light after reflection in angle of 45 degrees；It is described
The polarization side of light of the optical axis of second quarter-wave plate of the first 3D projection equipments with passing through corresponding 1/2nd wave plate
To in angle of 45 degrees；The optical axis of second quarter-wave plate of the 2nd 3D projection equipments is with passing through corresponding 1/2nd ripple
The polarization direction of the light of piece is into 135 degree of angles.
With reference to first aspect the third or the 4th kind of possible embodiment, the embodiments of the invention provide first aspect
Five kinds of possible embodiments, wherein, first optic film set also includes the first polaroid, and first polaroid is located at
Between the polarization beam splitter and first quarter-wave plate, the polarization transmission light sequentially passes through first polarisation
Piece and first quarter-wave plate；The polarization direction of first polaroid and the polarization direction one of the polarization transmission light
Cause.
With reference to first aspect the third or the 4th kind of possible embodiment, the embodiments of the invention provide first aspect
Six kinds of possible embodiments, wherein, second optic film set also includes the second polaroid, and second polaroid is located at
Between 1/2nd wave plate and second quarter-wave plate, the polarized reflection light after reflection sequentially passes through described
/ 2nd wave plates, second polaroid and second quarter-wave plate；The polarization direction of second polaroid with
The polarization direction of the polarization transmission light is consistent.
With reference in a first aspect, the embodiments of the invention provide the 7th kind of possible embodiment of first aspect, wherein, it is described
Polarization beam splitter is polarization splitting prism or polarization spectro piece.
With reference to the 7th kind of possible embodiment of first aspect or first aspect, the embodiments of the invention provide first aspect
8th kind of possible embodiment, wherein, the polarization beam splitter is I type polarization beam splitters, and the reflector is one,
Second optic film set is one；Or, the polarization beam splitter is L-type polarization beam splitter, and the reflector is
Two, second optic film set is two.
Second aspect, the embodiments of the invention provide a kind of 3D projection systems, including 3D described in above-mentioned first aspect is put
Reflect device, in addition to projector；The projector, for being set respectively to the first 3D projection equipments and the 2nd 3D projections
Standby transmission projection light.
3D projecting devices and 3D projection systems in the embodiment of the present invention, including two 3D projection equipments, each 3D projections
Equipment includes polarization beam splitter, the first optical thin film on the propagation path of the polarization transmission light of polarization beam splitter
Group, the reflector on the propagation path of the polarized reflection light of polarization beam splitter, positioned at the propagation of the reflected light of reflector
The second optic film set on path., can be by the inclined of polarization beam splitter by setting reflector and the second optic film set
Reflected light back shake to the second optic film set, the emergent light of the emergent light of the second optic film set and the first optic film set is total to
Same-action is in screen, so as to improve light propagation efficiency, reduces ray waste, improves projection brightness, solves in correlation technique
3D projection equipment ray wastes, the problem of light propagation efficiency is low.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows for the first structure of the corresponding 3D projecting devices of L-type polarization beam splitter provided in an embodiment of the present invention
It is intended to；
Fig. 2 shows for the first structure of the corresponding 3D projecting devices of I types polarization beam splitter provided in an embodiment of the present invention
It is intended to；
Fig. 3 shows for second of structure of the corresponding 3D projecting devices of L-type polarization beam splitter provided in an embodiment of the present invention
It is intended to；
Fig. 4 shows for second of structure of the corresponding 3D projecting devices of I types polarization beam splitter provided in an embodiment of the present invention
It is intended to；
Fig. 5 is the structural representation of 3D projection systems provided in an embodiment of the present invention.
Reference：
First 3D projection equipments 100, the 2nd 3D projection equipments 200；
L-type polarization beam splitter 10, I types polarization beam splitter 11；
First optic film set 20, the first quarter-wave plate 21, the first polaroid 22；
Reflector 30；
Second optic film set 40,1/2nd wave plates 41, the second quarter-wave plate 42, the second polaroid 43；
Convex lens 50, concavees lens 60, projector 70.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
It is a part of embodiment of the invention, rather than whole embodiments.The present invention being generally described and illustrated herein in the accompanying drawings is real
Applying the component of example can be arranged and be designed with a variety of configurations.Therefore, it is of the invention to what is provided in the accompanying drawings below
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on embodiments of the invention, the institute that those skilled in the art are obtained on the premise of creative work is not made
There is other embodiment, belong to the scope of protection of the invention.
The embodiments of the invention provide a kind of 3D projecting devices, including the first 3D projection equipments and the 2nd 3D projection equipments,
First 3D projection equipments and the 2nd 3D projection equipments include：
Polarization beam splitter, at least one reflector, the first optic film set and at least one second optic film set；
In the first 3D projection equipments and the 2nd 3D projection equipments, polarization beam splitter is a branch of for incident light to be divided into
Polarization transmission light and at least a branch of polarized reflection light；
First optic film set is located on the propagation path of the polarization transmission light of polarization beam splitter, and polarization transmission light is passed through
First optic film set；
On the propagation path of every beam polarized reflection light of polarization beam splitter, a reflector is provided with, each
On the propagation path of the reflected light of reflector, second optic film set is provided with；
Reflector, reflects, the polarized reflection light after reflection is passed through for the polarized reflection light to polarization beam splitter
Second optic film set；
Propagated out clockwise by the first optic film set and each second optic film set of the first 3D projection equipments
Rotatory polarization, circle counterclockwise is propagated out by the first optic film set and each second optic film set of the 2nd 3D projection equipments
Polarisation.
In the present embodiment, in the first 3D projection equipments and the 2nd 3D projection equipments, polarization beam splitter and reflector are homogeneous
Together, only the first optic film set is different with the second optic film set, passes through the first optic film set of the first 3D projection equipments
With each second optic film set, rotatory polarization clockwise can be exported, passes through the first optical thin film of the 2nd 3D projection equipments
Group and each second optic film set, can propagate out rotatory polarization counterclockwise.Polarization beam splitter and reflector is described below.
In the present embodiment, polarization beam splitter can be polarization splitting prism, can also be polarization spectro piece, polarization spectro
Prism is functionally identical with polarization spectro piece, and during specific implementation the present embodiment, implementing personnel can be according to cost, equipment
The demands such as size, from polarization splitting prism or polarization spectro piece.For ease of describing, the accompanying drawing in the present embodiment is with polarization
Amici prism illustrates polarization beam splitter, it is to be understood that the polarization splitting prism in every width accompanying drawing can replace with polarization point
Mating plate.
There is point of I types and L-type in view of polarization beam splitter, above-mentioned polarization beam splitter can be I type polarization spectros
Element, after light is incident, can be divided into a branch of polarization transmission light and a branch of polarized reflection light, therefore by I type polarization beam splitters
In each 3D projection equipments, above-mentioned reflector is one, and the second optic film set is also one；Above-mentioned polarization spectro member
Part can also be L-type polarization beam splitter, and after light is incident, a branch of polarization transmission light can be divided into by L-type polarization beam splitter
With two beam polarized reflection lights, therefore in each 3D projection equipments, above-mentioned reflector is two, and the second optic film set is also
Two.
In the present embodiment, it must incident light can be divided into a branch of polarization transmission light and a branch of that I type polarization beam splitters, which refer to,
The polarization beam splitter of polarized reflection light, it must be that incident light can be divided into a branch of polarization transmission light that L-type polarization beam splitter, which refers to,
With the polarization beam splitter of two beam polarized reflection lights.
It should be noted that for the first 3D projection equipments and the 2nd 3D projection equipments in same 3D projecting devices
Speech, polarization beam splitter therein must be same type, be all L-type or be all I types；Realize L-type and realize I types
When, polarization splitting prism can be used with a projection equipment, another equipment use polarization spectro piece, can also two equipment all
Using polarization splitting prism, can also two equipment all use polarization spectro piece.
Fig. 1 shows for the first structure of the corresponding 3D projecting devices of L-type polarization beam splitter provided in an embodiment of the present invention
It is intended to, as shown in figure 1, including the first 3D projection equipments 100 and the 2nd 3D projection equipments 200, in the He of the first 3D projection equipments 100
In 2nd 3D projection equipments 200, incident light is divided into a branch of polarization transmission light and two beam reflection of polarizations by L-type polarization beam splitter 10
Light.
In each projection equipment, the first optic film set 20 is located at the polarization transmission light of L-type polarization beam splitter 10
On propagation path, the polarization transmission light for receiving L-type polarization beam splitter 10, in the first 3D projection equipments 100, the polarization is saturating
Penetrate light and blaze abroad through becoming rotatory polarization clockwise after the first optic film set 20, in the 2nd 3D projection equipments 200, the polarization
Transmitted light becomes rotatory polarization counterclockwise and blazed abroad after passing through the first optic film set 20.
In each projection equipment, two reflectors 30 are located at two beam reflection of polarizations of L-type polarization beam splitter 10 respectively
On the propagation path of light, two the second optic film sets 40 are located on the propagation path of the reflected light of two reflectors 30 respectively,
For each reflector 30, it is used for the polarized reflection light for receiving L-type polarization beam splitter 10, and is reflexed to positioned at itself
Reflected light propagation path on the second optic film set 40, for each second optic film set 40, it is used to receiving pair
In the polarized reflection light that the reflector 30 answered reflects, the first 3D projection equipments 100, the polarized reflection light after the reflection passes through second
Become rotatory polarization clockwise after optic film set 40 to blaze abroad, in the 2nd 3D projection equipments 200, the reflection of polarization after the reflection
Light becomes rotatory polarization counterclockwise and blazed abroad after passing through the second optic film set 40.
Fig. 2 shows for the first structure of the corresponding 3D projecting devices of I types polarization beam splitter provided in an embodiment of the present invention
It is intended to, as shown in Fig. 2 including the first 3D projection equipments 100 and the 2nd 3D projection equipments 200, in the He of the first 3D projection equipments 100
In 2nd 3D projection equipments 200, incident light is divided into a branch of polarization transmission light and a branch of reflection of polarization by I types polarization beam splitter 11
Light.
In each projection equipment, the first optic film set 20 is located at the polarization transmission light of I types polarization beam splitter 11
On propagation path, the polarization transmission light for receiving I types polarization beam splitter 11, in the first 3D projection equipments 100, the polarization is saturating
Penetrate light and blaze abroad through becoming rotatory polarization clockwise after the first optic film set 20, in the 2nd 3D projection equipments 200, the polarization
Transmitted light becomes rotatory polarization counterclockwise and blazed abroad after passing through the first optic film set 20.
In each projection equipment, a reflector 30 is located at the propagation of the polarized reflection light of I types polarization beam splitter 11
On path, second optic film set 40 is located on the propagation path of the reflected light of the reflector 30, the reflector 30, and it is used
In receiving the polarized reflection light of I types polarization beam splitter 11, and reflexed to the second optic film set 40, this is second optically thin
Film group 40, it is used in the polarized reflection light for receiving the reflection of reflector 30, the first 3D projection equipments 100, the polarization after the reflection
Reflected light becomes rotatory polarization clockwise and blazed abroad after passing through the second optic film set 40, and in the 2nd 3D projection equipments 200, this is anti-
Polarized reflection light after penetrating, which is passed through, to be become rotatory polarization counterclockwise after the second optic film set 40 and blazes abroad.
In Fig. 1 and Fig. 2, the incident light 1 and incident light 2 of polarization beam splitter are natural light, as the 3D in the present embodiment
When projection equipment is used cooperatively with projector, the incident light 1 and incident light 2 of polarization beam splitter are the nature from projector
Light, it is to be understood that polarization transmission light and polarized reflection light are line polarisation, and the polarization direction of the two is orthogonal.
In Fig. 1 and Fig. 2, reflector 30 is visible ray atr plate, can be all anti-by the visible ray in polarized reflection light
The second optic film set 40 is incident upon, in each projection equipment, the first optic film set 20 and each second optic film set 40
It is respectively positioned in same plane, so that equipment overall structure is compact.
In Fig. 1 and Fig. 2, rotatory polarization clockwise and rotatory polarization collective effect counterclockwise are in screen, and user passes through special
Projecting images in the viewing screen of 3D glasses, it becomes possible to watch the image with 3D effect.
3D projecting devices in the embodiment of the present invention, including two 3D projection equipments, each 3D projection equipments include inclined
Shake beam splitter, the first optic film set 20 on the propagation path of the polarization transmission light of polarization beam splitter, positioned at inclined
Shake beam splitter polarized reflection light propagation path on reflector 30, on the propagation path of the reflected light of reflector 30
The second optic film set 40., can be by the inclined of polarization beam splitter by setting the optic film set 40 of reflector 30 and second
Reflected light back shake to the second optic film set 40, the emergent light of the second optic film set 40 and the first optic film set 20 go out
Light collective effect is penetrated in screen, so as to improve light propagation efficiency, ray waste is reduced, projection brightness is improved, related skill is solved
3D projection equipment ray wastes in art, the problem of light propagation efficiency is low.
When 3D projection equipments in the present embodiment show 3D images with projector fit applications in 3D image projectors place, it is
Ensure in each projection equipment, the rotatory polarization that the first optic film set 20 and the second optic film set 40 are sent is in screen
The picture of formation is in the same size and exists in coincidence, the present embodiment using following two schemes：
The first scheme is, using the reflector of curvature-adjustable as above-mentioned reflector 30, the curvature-adjustable it is reflective
Plate, which is called, makees the fine-tuning reflector of face type, can by adjusting the curvature (namely adjusting the face type of the reflector) of the reflector
So that the rotatory polarization that sends of the first optic film set 20 and the second optic film set 40 of same 3D projection equipments shape in screen
Into picture it is in the same size and exist overlap.
Second scheme is, using plane reflector as above-mentioned reflector 30, and Fig. 3 is provided in an embodiment of the present invention
Second of structural representation of the corresponding 3D projecting devices of L-type polarization beam splitter, Fig. 4 is I types provided in an embodiment of the present invention
Second of structural representation of the corresponding 3D projecting devices of polarization beam splitter, as shown in Figure 3 and Figure 4, when reflector is plane
It is optically thin in polarization beam splitter and first in the first 3D projection equipments 100 and the 2nd 3D projection equipments 200 during reflector
Convex lens 50 and concavees lens 60 are set gradually between film group 20, the polarization transmission light of polarization beam splitter sequentially passes through convex lens
50th, the optic film set 20 of concavees lens 60 and first, is changed into rotatory polarization and blazes abroad.In actual implementation, convex lens 50 can be set
The exiting surface of polarization beam splitter is fitted in, by the position for adjusting concavees lens 60 so that the first light of same 3D projection equipments
The picture that the rotatory polarization that film group 20 and the second optic film set 40 are sent is formed in screen is in the same size and there is coincidence.
By above two scheme, the rotatory polarization that the second optic film set 40 of same 3D projection equipments is sent ensure that
The picture that the rotatory polarization that the picture and the first optic film set 20 formed in screen is sent is formed in screen is in the same size and part
Overlap, so as to meet the requirement of 3D projections.Wherein, partially overlap and refer in the specific implementation, in same 3D projection equipments,
The picture that the rotatory polarization that the second optic film set 40 positioned at the top of the first optic film set 20 is sent is formed in screen, with first
The top half for the picture that the rotatory polarization that optic film set 20 is sent is formed in screen is overlapped, under the first optic film set 20
The picture that the rotatory polarization that second optic film set 40 of side is sent is formed in screen, the circle sent with the first optic film set 20 is inclined
The latter half for the picture that light is formed in screen is overlapped.
Second optic film set 40 is only existed it should be noted that being directed in same 3D projection equipments, Fig. 2 and Fig. 4,
It is located at the top of the first optic film set 20 in figure with second optic film set 40 to illustrate for example, in the specific implementation,
Second optic film set 40 is not limited by accompanying drawing, and it can be located at the top of the first optic film set 20, can also be located at
The lower section of first optic film set 20.
It is able to know that, the polarization transmission light and polarized reflection light of polarization beam splitter are line polarisation and the polarization side of the two
To orthogonal, also, in 3D projections, it is desirable to which the rotatory polarization that same 3D projection equipments are sent is rotatory polarization clockwise, or
It is rotatory polarization counterclockwise, namely requires the first optic film set 20 and the second optic film set 40 in same 3D projection equipments
The rotatory polarization sent is rotatory polarization clockwise, or is rotatory polarization counterclockwise, based on this, as shown in Figure 3 and Figure 4, this implementation
In example, the first optic film set 20 includes the first quarter-wave plate 21, and polarization transmission light passes through the first quarter-wave plate 21,
The polarization transmission light of line polarisation form can be changed into by rotatory polarization by first quarter-wave plate 21.Second optic film set
40 include 1/2nd wave plates 41 and the second quarter-wave plate 42, and 1/2nd wave plate 41 is located at the above-mentioned He of reflector 30
Between second quarter-wave plate 42, the polarized reflection light after reflection sequentially pass through 1/2nd wave plates the 41 and the 2nd 4/
One wave plate 42.
Specifically, the incidence surface of the first quarter-wave plate 21 is relative with the exiting surface of polarization beam splitter, and 1/2nd
The incidence surface of wave plate 41 is relative with the exiting surface of reflector 30, the exiting surface and the second quarter-wave plate of 1/2nd wave plates 41
42 incidence surface is relative.
After polarized reflection light after reflection is by 1/2nd wave plates 41 in the second optic film set 40, its polarization direction
It is changed into consistent with polarization transmission light, the light after change passes through the second quarter-wave plate 42 in the second optic film set 40 again
Afterwards, it is changed into rotatory polarization clockwise or rotatory polarization counterclockwise.Polarization transmission light passes through the one or four in the first optic film set 20
After/mono- wave plate 21, it is changed into rotatory polarization clockwise or rotatory polarization counterclockwise.
For the first 3D projection equipments 100, the optical axis of the first quarter-wave plate 21 and the polarization side of polarization transmission light are made
To the polarization direction of the polarized reflection light after the optical axis and reflection in angle of 45 degrees, making 1/2nd wave plates 41 in angle of 45 degrees,
The optical axis of the second quarter-wave plate 42 and the polarization direction of the light through corresponding 1/2nd wave plate 41 are made into 45 degree of folders
Angle, so as to propagate out rotatory polarization clockwise by the first quarter-wave plate 21 and the second quarter-wave plate 42.
For the 2nd 3D projection equipments 200, the optical axis of the first quarter-wave plate 21 and the polarization side of polarization transmission light are made
To the polarization direction of the polarized reflection light after the optical axis and reflection for into 135 degree of angles, making 1/2nd wave plates 41 in angle of 45 degrees,
The optical axis of the second quarter-wave plate 42 and the polarization direction of the light through corresponding 1/2nd wave plate 41 are made into 135 degree of folders
Angle, so as to propagate out rotatory polarization counterclockwise by the first quarter-wave plate 21 and the second quarter-wave plate 42.
In two 3D projection equipments, make 1/2nd wave plates 41 optical axis and reflection after polarized reflection light polarization side
To in angle of 45 degrees, can make the polarized reflection light after reflection pass through 1/2nd wave plates 41 after, its polarization direction be changed into partially
Transmitted light of shaking is consistent.
There is polarization not by the polarization transmission light and polarized reflection light being divided into after polarization beam splitter in view of incident light
In completely the problem of, the present embodiment, as shown in Figure 3 and Figure 4, in each 3D projection equipments, the first optic film set 20 is also wrapped
The first polaroid 22 is included, and the first polaroid 22 is located between polarization beam splitter and the first quarter-wave plate 21, first is inclined
The incidence surface of mating plate 22 is towards the exiting surface of polarization beam splitter, and the exiting surface of the first polaroid 22 is towards the first quarter-wave
The incidence surface of piece 21, polarization transmission light sequentially passes through the first polaroid 22 and the first quarter-wave plate 21.
Polarization transmission light can again be polarized by the first polaroid 22, wherein, the polarization of the first polaroid 22
Direction is consistent with the polarization direction of the polarization transmission light of polarization beam splitter, and the polarization direction of polarization transmission light is along in accompanying drawing
Direction (as shown in the arrow in Fig. 1 to 2, Fig. 3 to Fig. 4 omits direction mark) up and down, the first polaroid 22 is also referred to as 0 degree
Polaroid.
As shown in Figure 3 and Figure 4, the second optic film set 40 also includes the second polaroid 43, and the second polaroid 43 is located at two
Between/mono- wave plate 41 and the second quarter-wave plate 42, incidence surface 1/2nd wave plates 41 of direction of the second polaroid 43
Exiting surface, the incidence surface of exiting surface the second quarter-wave plate 42 of direction of the second polaroid 43.Polarized reflection light after reflection
Sequentially pass through 1/2nd wave plates 41, the second polaroid 43 and the second quarter-wave plate 42.
Polarized reflection light can again be polarized by the second polaroid 43, wherein, the polarization of the second polaroid 43
Direction is consistent with the polarization direction of the polarization transmission light of polarization beam splitter, and the polarization direction of polarization transmission light is along in accompanying drawing
Direction (as shown in the arrow in Fig. 1 to 2, Fig. 3 to Fig. 4 omits direction mark) up and down, the second polaroid 43 is also referred to as 0 degree
Polaroid.
When the performance of reflector 30 and polarization beam splitter is good enough, the first polaroid 22 in two 3D projection equipments
It can also be omitted with the second polaroid 43.
In the specific implementation, the first 3D projection equipments and the 2nd 3D projection equipments are also equal for 3D projection equipments in the present embodiment
Including housing, polarization beam splitter, each reflector 30, first optic film set 20 and each second optics of the Fig. 1 into Fig. 4
Film group 40 is respectively positioned in the housing.Installation can be played by the housing, the purpose of 3D projection equipments is protected.
In the present embodiment, in each projection equipment, also distinguish in the first optic film set 20 and the second optic film set 40
Including glass substrate, above-mentioned polaroid and wave plate are fitted on the glass substrate, can need to select single according to occasion is implemented
Glass surface is fitted or the laminating of double glass surfaces.
3D projecting devices in the embodiment of the present invention, including two 3D projection equipments, each equipment include polarization spectro
Element, the first optic film set 20 on the propagation path of the polarization transmission light of polarization beam splitter, positioned at polarization spectro
Reflector 30 on the propagation path of the polarized reflection light of element, second on the propagation path of the reflected light of reflector 30
Optic film set 40., can be by the reflection of polarization of polarization beam splitter by setting the optic film set 40 of reflector 30 and second
Light reflexes to the second optic film set 40, and the emergent light of the emergent light of the second optic film set 40 and the first optic film set 20 is total to
Same-action is in screen, so as to improve light propagation efficiency, reduces ray waste, improves projection brightness, solves in correlation technique
3D projection equipment ray wastes, the problem of light propagation efficiency is low.
The above-mentioned 3D projecting devices of correspondence, the embodiment of the present invention additionally provides a kind of 3D projection systems, and the system includes upper
The 3D projecting devices stated, in addition to projector, the projector are used to set to the first 3D projection equipments 100 and the 2nd 3D projections respectively
Standby 200 transmission projection light., it will be observed that the projection light is the natural light for meeting 3D image projector demands.
In the case of one kind, 3D projection systems include a projector, and the projector has two camera lenses, passes through the two mirrors
Head is respectively to the first 3D projection equipments 100 and the 2nd 3D projection equipments 200 transmission projection light.
Fig. 5 is the structural representation of 3D projection systems provided in an embodiment of the present invention, as shown in figure 5, in another case,
3D projection systems include two projectors 70, and first projector 70 shows light, second to the transmission of the first 3D projection equipments 100
Individual projector 70 shows light to the transmission of the 2nd 3D projection equipments 200.
3D projection systems in the embodiment of the present invention, can be by by setting the optic film set 40 of reflector 30 and second
The polarized reflection light of polarization beam splitter reflexes to the second optic film set 40, the emergent light and first of the second optic film set 40
The emergent light collective effect of optic film set 20 is in screen, so as to improve light propagation efficiency, reduces ray waste, improves projection
Brightness, solves the 3D projection equipment ray wastes in correlation technique, the problem of light propagation efficiency is low.
By the 3D projection systems in the embodiment of the present invention, compared with the 3D projection systems in correlation technique, in theory may be used
To improve 100% light propagation efficiency, so as in the case where not adding or adding a small amount of cost, greatly improve projection bright
Degree.
It should be noted that Fig. 1 to 5 is a kind of schematic diagram, and in the specific implementation, the first 3D projection equipments and the 2nd 3D
Projection equipment can be placed up and down, can also left and right place, when placing up and down, can top be the of output rotatory polarization clockwise
One 3D projection equipments, lower section is the 2nd 3D projection equipments for exporting rotatory polarization counterclockwise, can also lower section be output clockwise circle
First 3D projection equipments of polarisation, top is the 2nd 3D projection equipments for exporting rotatory polarization counterclockwise, when left and right is placed, the first 3D
Projection equipment and the 2nd 3D projection equipments or so order are not limited.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Orientation or position relationship that invention product is usually put when using, are for only for ease of the description present invention and simplify description, without
It is that instruction or the signified device of hint or element must have specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it can not manage
Solve to indicate or imply relative importance.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Finally it should be noted that：Embodiment described above, is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention.The protection in the present invention should all be covered
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of 3D projecting devices, it is characterised in that including：First 3D projection equipments and the 2nd 3D projection equipments, described first
3D projection equipments and the 2nd 3D projection equipments include：
Polarization beam splitter, at least one reflector, the first optic film set and at least one second optic film set；
In the first 3D projection equipments and the 2nd 3D projection equipments, the polarization beam splitter, for by incident light
It is divided into a branch of polarization transmission light and at least a branch of polarized reflection light；
First optic film set is located on the propagation path of the polarization transmission light of the polarization beam splitter, and the polarization is saturating
Light is penetrated through first optic film set；
On the propagation path of every beam polarized reflection light of the polarization beam splitter, a reflector is provided with,
On the propagation path of the reflected light of each reflector, second optic film set is provided with；
The reflector, reflects for the polarized reflection light to the polarization beam splitter, and the polarization after reflection is anti-
Light is penetrated through second optic film set；
Propagated out clockwise by the first optic film set and each second optic film set of the first 3D projection equipments
Rotatory polarization, the inverse time is propagated out by the first optic film set and each second optic film set of the 2nd 3D projection equipments
Pin rotatory polarization.
2. equipment according to claim 1, it is characterised in that the reflector is plane reflector；
In the first 3D projection equipments and the 2nd 3D projection equipments, the polarization beam splitter and first optics
It is disposed with convex lens and concavees lens between film group, the polarization transmission light sequentially passes through the convex lens, described recessed
Mirror and first optic film set.
3. equipment according to claim 1, it is characterised in that the reflector is the reflector of curvature-adjustable.
4. equipment according to claim 1, it is characterised in that first optic film set includes the first quarter-wave
Piece, the polarization transmission light passes through first quarter-wave plate；
Second optic film set includes 1/2nd wave plates and the second quarter-wave plate, and 1/2nd wave plate position
Between the reflector and second quarter-wave plate, the polarized reflection light after reflection sequentially passes through described two points
One of wave plate and second quarter-wave plate.
5. equipment according to claim 4, it is characterised in that the first quarter-wave plate of the first 3D projection equipments
Optical axis and the polarization transmission light polarization direction in angle of 45 degrees；
The optical axis of first quarter-wave plate of the 2nd 3D projection equipments and the polarization direction of the polarization transmission light are into 135
Spend angle；
The optical axis of 1/2nd wave plates of the first 3D projection equipments and 1/2nd wave plates of the 2nd 3D projection equipments
Optical axis, with the polarization direction of the polarized reflection light after reflection in angle of 45 degrees；
The optical axis of second quarter-wave plate of the first 3D projection equipments and the light through corresponding 1/2nd wave plate
Polarization direction in angle of 45 degrees；
The optical axis of second quarter-wave plate of the 2nd 3D projection equipments and the light through corresponding 1/2nd wave plate
Polarization direction into 135 degree of angles.
6. the equipment according to claim 4 or 5, it is characterised in that first optic film set also includes the first polarisation
Piece, first polaroid is located between the polarization beam splitter and first quarter-wave plate, the polarization transmission
Light sequentially passes through first polaroid and first quarter-wave plate；
The polarization direction of first polaroid is consistent with the polarization direction of the polarization transmission light.
7. the equipment according to claim 4 or 5, it is characterised in that second optic film set also includes the second polarisation
Piece, second polaroid is located between 1/2nd wave plate and second quarter-wave plate, described after reflection
Polarized reflection light sequentially passes through 1/2nd wave plate, second polaroid and second quarter-wave plate；
The polarization direction of second polaroid is consistent with the polarization direction of the polarization transmission light.
8. equipment according to claim 1, it is characterised in that the polarization beam splitter is polarization splitting prism or inclined
Shake light splitting piece.
9. the equipment according to claim 1 or 8, it is characterised in that the polarization beam splitter is I types polarization spectro member
Part, the reflector is one, and second optic film set is one；Or,
The polarization beam splitter is L-type polarization beam splitter, and the reflector is two, and second optic film set is two
It is individual.
10. a kind of 3D projection systems, it is characterised in that including the 3D projecting devices described in any one of the claims 1 to 9,
Also include projector；
The projector, for respectively to the first 3D projection equipments and the 2nd 3D projection equipments transmission projection light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350636.2A CN107015430A (en) | 2017-05-18 | 2017-05-18 | 3D projecting devices and 3D projection systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350636.2A CN107015430A (en) | 2017-05-18 | 2017-05-18 | 3D projecting devices and 3D projection systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107015430A true CN107015430A (en) | 2017-08-04 |
Family
ID=59449855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710350636.2A Pending CN107015430A (en) | 2017-05-18 | 2017-05-18 | 3D projecting devices and 3D projection systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107015430A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470900A (en) * | 2002-07-24 | 2004-01-28 | ���±�ӡˢ��е�ɷݹ�˾ | Compact device for printing-plate imaging |
| CN101943799A (en) * | 2010-07-16 | 2011-01-12 | 黄凤仙 | Polarization-type three-dimensional double-projection optical system |
| CN102147524A (en) * | 2010-02-10 | 2011-08-10 | 中国科学院大连化学物理研究所 | Curvature-variable reflector device |
| CN203164500U (en) * | 2013-04-19 | 2013-08-28 | 中国人民解放军装甲兵工程学院 | Reflector with adjustable curvature |
| CN103529637A (en) * | 2013-10-29 | 2014-01-22 | 王高胜 | 3D (three dimensional) film and television system and 3D projection method |
| CN103616772A (en) * | 2013-11-27 | 2014-03-05 | 王高胜 | 3D movie and television system and 3D projection method |
| CN104133297A (en) * | 2014-07-13 | 2014-11-05 | 昆山安亚特光电有限公司 | Polarization conversion device and stereoscopic projection system employing same |
| CN105404012A (en) * | 2015-12-25 | 2016-03-16 | 刘飞 | Double-machine high-luminous efficiency stereo projection system |
| US20160124238A1 (en) * | 2013-05-29 | 2016-05-05 | Volfoni R&D | Optical polarisation device for a stereoscopic image projector |
| CN205787403U (en) * | 2016-05-18 | 2016-12-07 | 颜栋卿 | A kind of stereo projection apparatus improving light utilization efficiency |
-
2017
- 2017-05-18 CN CN201710350636.2A patent/CN107015430A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1470900A (en) * | 2002-07-24 | 2004-01-28 | ���±�ӡˢ��е�ɷݹ�˾ | Compact device for printing-plate imaging |
| CN102147524A (en) * | 2010-02-10 | 2011-08-10 | 中国科学院大连化学物理研究所 | Curvature-variable reflector device |
| CN101943799A (en) * | 2010-07-16 | 2011-01-12 | 黄凤仙 | Polarization-type three-dimensional double-projection optical system |
| CN203164500U (en) * | 2013-04-19 | 2013-08-28 | 中国人民解放军装甲兵工程学院 | Reflector with adjustable curvature |
| US20160124238A1 (en) * | 2013-05-29 | 2016-05-05 | Volfoni R&D | Optical polarisation device for a stereoscopic image projector |
| CN103529637A (en) * | 2013-10-29 | 2014-01-22 | 王高胜 | 3D (three dimensional) film and television system and 3D projection method |
| CN103616772A (en) * | 2013-11-27 | 2014-03-05 | 王高胜 | 3D movie and television system and 3D projection method |
| CN104133297A (en) * | 2014-07-13 | 2014-11-05 | 昆山安亚特光电有限公司 | Polarization conversion device and stereoscopic projection system employing same |
| CN105404012A (en) * | 2015-12-25 | 2016-03-16 | 刘飞 | Double-machine high-luminous efficiency stereo projection system |
| CN205787403U (en) * | 2016-05-18 | 2016-12-07 | 颜栋卿 | A kind of stereo projection apparatus improving light utilization efficiency |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2747349B2 (en) | Lighting system for liquid crystal display system | |
| CN109613705B (en) | Near-eye display device and near-eye display method | |
| CN110543022B (en) | Augmented reality device and wearing equipment | |
| US20190391408A1 (en) | Compact collimating optical device and system | |
| EP1274257B1 (en) | Polarised light recuperation method and apparatus | |
| KR100951213B1 (en) | Image display unit | |
| US8651726B2 (en) | Efficient polarized directional backlight | |
| US9740017B2 (en) | Optical polarisation device for a stereoscopic image projector | |
| KR20200040304A (en) | Augmented reality display | |
| US20220308343A1 (en) | Near-to-eye display device and augmented reality apparatus | |
| KR20190000456U (en) | Optical system with compact collimating image projector | |
| EP3867696A1 (en) | Optical devices and systems with dichroic beamsplitter color combiner | |
| CN104380177A (en) | Polarization recovery in directional display device | |
| CN109445111B (en) | Optical device | |
| CN107065181B (en) | Optical system of virtual reality equipment | |
| CN111487786A (en) | Optical display system, control method and display device | |
| CN107678166A (en) | Augmented reality display device | |
| CN108181709A (en) | AR display devices and wearable AR equipment | |
| CN112540502A (en) | Projection display equipment and projection optical machine thereof | |
| US10845614B2 (en) | Near-eye display device | |
| CN209656995U (en) | Lens module and optical system and virtual reality device with it | |
| KR20150069818A (en) | A stereoscopic image projection device for improved brightness and a providing method for A stereoscopic image | |
| CN217718285U (en) | Apparatus for manufacturing holographic optical element and near-to-eye display device | |
| US20200089016A1 (en) | High brightness stereoscopic 3d projection system | |
| CN207020456U (en) | 3D projecting devices and 3D projection systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170804 |