CN105824126B - Light source module and display device - Google Patents
Light source module and display device Download PDFInfo
- Publication number
- CN105824126B CN105824126B CN201510004580.6A CN201510004580A CN105824126B CN 105824126 B CN105824126 B CN 105824126B CN 201510004580 A CN201510004580 A CN 201510004580A CN 105824126 B CN105824126 B CN 105824126B
- Authority
- CN
- China
- Prior art keywords
- light
- unit
- light source
- prism
- sub
- 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.)
- Expired - Fee Related
Links
Abstract
The present invention provides a kind of light source module and display device.The light source module has primary optical axis.Light source module includes light source, imaging unit, spectrophotometric unit, the first relay unit and the second relay unit.Spectrophotometric unit has transmission plane, the first reflecting surface and the second reflecting surface.First reflecting surface is symmetrical arranged with the second reflecting surface.Light source provides light.Light is sequentially by imaging unit, spectrophotometric unit, and some light forms the first light beam, some light forms the second light beam.There is the first offset between the primary optic axis and primary optical axis of first light beam, there is the second offset between the second optical axis and primary optical axis of second light beam, first offset is identical with the second offset, and the first offset is opposite relative to the offset direction of the primary optical axis with the second offset.The disclosure can increase the analysable ken.
Description
Technical field
It is more particularly to a kind of for the light source module of display device and using the light the present invention relates to a kind of light source module
The display device of source module.
Background technology
In recent years, flourishing with stereo display technique, this technology is met the tendency of applied to various commercialized products
And it gives birth to, such as three-dimensional film, stereotelevision etc..Stereo display technique is in a sequential, by the left-eye images of different visual angles
With right-eye image, the left eye and right eye of audience are respectively sent to, imitates the depth of field that human eye is generated by parallax, and make observer
Watch stereopsis.
In addition, can also be according to whether needing to be aided with additional equipment and be divided into spectacle, helmet-type and bore hole stereoscopic display skill
Art.Directly naked eyes wherein can be used by special anaglyph spectacles or the special helmet because being not required to bore hole stereoscopic display technology
It is directly ornamental, and especially paid close attention to by industry.
The imaging that the light source module of existing bore hole stereo projection apparatus provides multiple and different angles forms multiple kens, so that
The right and left eyes of viewer receive different images, when observer will receive different images in different positions and watch
The image of different angle.Used by general bore hole stereo projection apparatus way have can rough segmentation into three kinds：Liquid crystal grating is configured
(slit), multiple projection arrangements or collocation optical scanning element is configured.However the light path design of configuration liquid crystal grating is complicated, configuration is more
A projection arrangement can then so that the volume of whole display device is excessive, therefore take collocation optical scanning element in recent years more, to be formed
The mode of multiple light sources is to provide stereopsis.
But no matter using which kind of way, the angle enlargement screen (such as two-layer columnar lens) that must all arrange in pairs or groups is so that left and right
Eye receives different images.The angle that the analysable light of light source module enters will be with (observer at amplification screen imaging
Position) quantity of the analysable ken has correlation, and the angle of entrance is bigger, and analysable ken quantity is more.Light source module
The range of analysable angle of incidence of light will be limited by the etendue of itself.And general existing increase etendue
It does fado and takes the way for increasing digital micro-mirror device imaging area, but with the increase of ken quantity, then must arrange in pairs or groups special rule
The digital micro-mirror device of lattice can reach required imaging area, more uneconomical.
In view of this, how a kind of light source module and display by increasing etendue to improve ken quantity is provided
Device, actually this industry urgent problem to be solved.
Invention content
In view of the above subject, it is a primary object of the present invention to provide one kind to parse to improve by increasing etendue
The light source module and display device of ken quantity.
In order to achieve the above object, the present invention provides a kind of light source module, for display device.Light source module has primary optical axis.
Light source module includes light source, imaging unit, spectrophotometric unit, the first relay unit and the second relay unit.Spectrophotometric unit has
Transmission plane, the first reflecting surface and the second reflecting surface.First reflecting surface is symmetrical arranged with the second reflecting surface.
Light source provides light.For light sequentially by imaging unit, spectrophotometric unit, some light forms the first light beam, part
Light forms the second light beam, and the first light beam enters the first relay unit by the first reflective surface, and the first relay unit is again by the
One light beam is transferred to spectrophotometric unit, and the first light beam passes through spectrophotometric unit and leaves.
Second light beam passes through spectrophotometric unit to enter the second relay unit, and the second light beam is transferred to point by the second relay unit again
Second reflecting surface of light unit, the second light beam leave the spectrophotometric unit by the second reflective surface.
There are the first offset, the second optical axis and primary optical axis of the second light beam between the primary optic axis and primary optical axis of first light beam
Between have the second offset, the first offset is identical with the second offset, and the first offset and the second offset are relative to the master
The offset direction of optical axis is opposite.
In a preferred embodiment of the present invention, light source module has bore, and primary optic axis, the offset of the second optical axis are
A quarter bore.
In a preferred embodiment of the present invention, imaging unit is digital micro-mirror device or liquid crystal display device.
In a preferred embodiment of the present invention, light source is laser light source or laser source array.
In a preferred embodiment of the present invention, also comprising polarisation unit, light enters polarisation unit after leaving imaging unit,
And form parallel polarization light or vertical polarization light.
In a preferred embodiment of the present invention, the first relay unit includes the first polarization part, and the first polarization part includes black
Strip shade, multiple strip quarter-wave plates and speculum.Strip quarter-wave plate is set on speculum, the black bar
Shape shade is set to those strip quarter-wave on pieces and orthogonal with the direction that those strip quarter-wave plates arrange.
In a preferred embodiment of the present invention, the first relay unit includes the first polarization part, and the first polarization part includes black
Strip shade, quarter-wave plate and speculum, quarter-wave plate are set on speculum, and black bar shade is set to four
On/mono- wave plate.
In a preferred embodiment of the present invention, also comprising optical scanning element, light is transferred to imaging by optical scanning element
Unit, and optical scanning element is deflected according to different sequential, to form multiple and different imagings.
In a preferred embodiment of the present invention, optical scanning element is voice coil motor, polygonal mirror or micro electronmechanical eyeglass.
In a preferred embodiment of the present invention, spectrophotometric unit further includes the first sub- prism, the second sub- prism and third
Prism.First sub- prism forms transmission plane, and the second sub- prism is set to the transmission plane of the first sub- prism with the sub- prism of third, and first
Reflecting surface is set to side of the second sub- prism with respect to the sub- prism of third, and the second reflecting surface is set to the sub- prism of third with respect to second
The side of sub- prism.
The present invention may also provide a display device, including display screen and light source module.Light source module has key light
Axis.Light source module includes light source, imaging unit, spectrophotometric unit, the first relay unit and the second relay unit.Spectrophotometric unit has
There are transmission plane, the first reflecting surface and the second reflecting surface.First reflecting surface is symmetrical arranged with the second reflecting surface.
Light source provides light.For light sequentially by imaging unit, spectrophotometric unit, the part light forms the first light beam, portion
Light splitter forms the second light beam, and the first light beam enters the first relay unit by the first reflective surface, and the first relay unit again will
First light beam is transferred to spectrophotometric unit.
Second light beam passes through spectrophotometric unit to enter the second relay unit, and the second light beam is transferred to point by the second relay unit again
Second reflecting surface of light unit, the second light beam are transferred to spectrophotometric unit by the second reflective surface.First light of the first light beam
There is the first offset between axis and primary optical axis, have the second offset between the second optical axis and primary optical axis of the second light beam, first partially
Shifting amount is identical with the second offset, and the first light beam, the second light beam unit that is split are transferred to display screen.
In a preferred embodiment of the present invention, light source module has bore, and primary optic axis, the offset of the second optical axis are
A quarter bore.
In a preferred embodiment of the present invention, imaging unit is digital micro-mirror device or liquid crystal display device.
In a preferred embodiment of the present invention, light source is laser light source or laser source array.
In a preferred embodiment of the present invention, also comprising polarisation unit, light enters light source module after leaving imaging unit
Polarisation unit, and form parallel polarization light or vertical polarization light.
In a preferred embodiment of the present invention, the first relay unit includes the first polarization part, and the first polarization part includes black
Strip shade, multiple strip quarter-wave plates and speculum.Strip quarter-wave plate is set on speculum, the black bar
Shape shade is set to those strip quarter-wave on pieces and orthogonal with the direction that those strip quarter-wave plates arrange.
In a preferred embodiment of the present invention, the first relay unit includes the first polarization part, and the first polarization part includes black
Strip shade, quarter-wave plate and speculum, quarter-wave plate are set on speculum, and black bar shade is set to four
On/mono- wave plate.
In a preferred embodiment of the present invention, also comprising optical scanning element, light is passed light source module by optical scanning element
Be handed to imaging unit, and optical scanning element according to it is different when deflect, to form multiple and different imagings.
In a preferred embodiment of the present invention, optical scanning element is voice coil motor, polygonal mirror or micro electronmechanical eyeglass.
In a preferred embodiment of the present invention, spectrophotometric unit further includes the first sub- prism, the second sub- prism and third
Prism.First sub- prism forms transmission plane, and the second sub- prism is set to the transmission plane of the first sub- prism with the sub- prism of third, and first
Reflecting surface is set to side of the second sub- prism with respect to the sub- prism of third, and the second reflecting surface is set to the sub- prism of third with respect to second
The side of sub- prism.
In a preferred embodiment of the present invention, display screen includes two-layer columnar lens, and two-layer columnar lens have two columns
Shape lens jacket and the omni-directional diffusion plate being sandwiched between grade cylindrical lenses layer.
In a preferred embodiment of the present invention, display screen includes polarisation unit, is set to the incident side of display screen, light
Line enters polarisation unit and forms parallel polarization light or vertical polarization light.
In a preferred embodiment of the present invention, an angle modulation part is further included, wherein angle modulation part is included by birefringence
Multiple planes of refraction that material is formed.
In a preferred embodiment of the present invention, an angle modulation part is further included, wherein angle modulation part includes polarizer, more
A strip half-wave plate and zigzag prism, zigzag prism includes multiple planes of refraction, and respectively the plane of refraction corresponds to the respectively strip half
Wave plate is set.
From the above, the light source module that the present embodiment is provided, can be anti-by the transmission plane setting first in spectrophotometric unit
The mode in face is penetrated, light is divided into the first light beam and the second light beam, and the first light beam and the second light beam will respectively enter
One relay unit and the second relay unit.Into the first relay unit, the first light beam of the second relay unit and the second light beam
Optical axis will have an offset with respect to primary optical axis.Therefore, may be such that the angle for the light for leaving light source module increases (etendue increasing
Add), and reach the purpose in the case where not changing imaging unit, being not required to increase imaging unit, increasing the analysable ken.
Description of the drawings
Fig. 1 is the schematic diagram of the light source module of the present invention.
Fig. 2 is the Local map of the light source module of Fig. 1.
Fig. 3 is the exploded perspective view of the spectrophotometric unit of the light source module of Fig. 1.
Fig. 4 A are the schematic diagram of the first polarization part of the first relay unit.
Fig. 4 B are diagrammatic cross-sections of Fig. 4 A along AA secants.
Fig. 4 C are the schematic diagram of the another embodiment of the first polarization part of the first relay unit.
Fig. 4 D are diagrammatic cross-sections of Fig. 4 C along BB secants.
Fig. 5, Fig. 6 are the equivalent imaging schematic diagram of the first and second relay units.
Fig. 7 is the schematic diagram of the projection arrangement of the present invention.
Fig. 8 is the enlarged diagram of the angle modulation part of Fig. 7 projection arrangements.
Fig. 9 is the enlarged diagram of the another embodiment of angle modulation part of Fig. 7 projection arrangements.
Reference sign：
1、21：Light source module
10：Light source
11：Imaging unit
13：Spectrophotometric unit
131：First sub- prism
131a：Transmission plane
132a：First reflecting surface
132：Second sub- prism
133a：Second reflecting surface
133：The sub- prism of third
14：First relay unit
141：Lens
142、242：First polarization part
142a、242a：Quarter-wave plate
142b、242b：First speculum
142c：First black bar shade
15：Second relay unit
151：Lens
152：Second polarization part
16：Polarisation unit
17：Optical scanning element
171：Actuation means
172：Reflecting surface
242c：Second mirror matrix
242d：Black bar shade
d1：First offset
d2：Second offset
R：Bore
Z1、Z2：Rim of the mouth diameter
2：Projection arrangement
22：Show screen
221：Two-layer columnar lens
221a、221b：Cylindrical lenses layer
221c：Omni-directional diffusion plate
222：Collimation unit
224、324：Angle modulation part
224a：Plane of refraction
324a：Zigzag prism
324b：Strip half-wave plate
324c：Polarizer
Specific embodiment
Hereinafter with reference to relevant drawings, illustrate a kind of light source module and projection arrangement according to present pre-ferred embodiments,
In identical element will be illustrated with identical reference marks.
Meanwhile in following embodiment and attached drawing, have been omitted from the indirect relevant element of the present invention and be not painted；It is and attached
The size relationship of each interelement is only and asks and be readily understood by figure, non-limiting actual ratio.
Fig. 1 to Fig. 3 is please refer to, Fig. 1 is the schematic diagram of the light source module of the present invention.Fig. 2 is the office of the light source module of Fig. 1
Portion's figure.Fig. 3 is the exploded perspective view of the spectrophotometric unit of the light source module of Fig. 1.
The present invention provides a kind of light source module 1, for display device.Display device illustrated herein can be digital light
Learn processing unit (Digital Light Processing；DLP), the projection display or liquid crystal projection apparatus (Liquid
Crystal Display；) or monocrystalline liquid crystal on silicon displays (Liquid Crystal On Silicon System, LCOS LCD
) etc. System there is the equipment of projection display funciton, but not using these to limit.
Light source module 1 includes light source 10, imaging unit 11, spectrophotometric unit 13, the first relay unit 14 and the second relaying
Unit 15.Light source 10 may be, for example, laser light source or laser source array (laser array), and the light source 10 of the present embodiment is with one
Laser light source is illustrates, but the quantity of light source 10 is not limited to this embodiment system with type.Imaging unit 11 may be, for example, number
Micro-mirror device (Digital Micromirror Device, DMD) or liquid crystal display device.
Please also refer to Fig. 2, Fig. 3, the spectrophotometric unit 13 of the present embodiment have transmission plane 131a, the first reflecting surface 132a with
And the second reflecting surface 133a.First reflecting surface 132a is symmetrical arranged with the second reflecting surface 133a, and the first reflecting surface 132a and
Two reflecting surface 133a, which are respectively perpendicular, is set to transmission plane 131a, wherein, the first reflecting surface 132a and the second reflecting surface 133a cover
Fractional transmission face 131a so that light can be by the first reflecting surface 132a or the second reflecting surface 133a by part during transmission plane 131a
Reflection.
Specifically, the spectrophotometric unit 13 of the present embodiment further includes the first sub- prism 131, the second sub- prism 132 and
Three sub- prisms 133.First sub- prism 131 forms transmission plane 131a, and the transmission plane 131a of the present embodiment is the first sub- prism 131
Light-emitting surface.Second sub- prism 132 is set to the transmission plane 131a (light-emitting surface) of the first sub- prism 131 with the sub- prism 133 of third, the
One reflecting surface 132a is set to side of the second sub- prism 132 with respect to third sub- prism 133, and the second reflecting surface 133a is set to the
Three sub- prisms 133 are with respect to the side of the second sub- prism 132.Also that is, the first reflecting surface 132a is opposite with the second reflecting surface 133a.And
The light that second sub- prism 132 can will be transmitted to spectrophotometric unit 13 is cut into two light beams.
In addition, please continue to refer to Fig. 1, the light source module 1 of the present embodiment also comprising optical scanning element 17, by light swept by light
Retouch element 17 and be transferred to imaging unit 11, and optical scanning element 17 will be deflected according to different sequential, with formed it is multiple and different into
Picture.Furthermore, the reflecting surface of optical scanning element 17 will deflect, and by light in different angles according to different sequential
Imaging.
The optical scanning element 17 of the present embodiment can be voice coil motor (voice coil motor), polygonal mirror (Polygon
Mirror) or micro electronmechanical (MEMS) eyeglass or these combination etc. are formed.Using optical scanning element 17 can for voice coil motor as
Example, optical scanning element 17 can have actuation means 171 and reflecting surface 172, and actuation means 171 are able to deflecting reflecting face 172,
Actuation means 171 can be by regulating and controlling size of current, to adjust the angle of the deflection of reflecting surface 172.
In addition, the 172 deflectable angle of reflecting surface of the present embodiment is 20 degree~-20 degree, if being intended to be provided light source 10
Strip light, in different sequential transmissions into the strip-shaped light source of 16 different angles, then deflectable 2.5 degree every time of reflecting surface,
To form 16 kens.But angular distribution herein will be adjusted with ken quantity demand, not be with 16 described here
Limitation.
Brought forward, please with particular reference to Fig. 1, optical scanning element 17 may be such that light that light source 10 provides from X-Z coordinate planes,
Different sequential form the strip-shaped light source of multiple Y-Z coordinate planes, and the strip-shaped light source of these Y-Z coordinate planes will be passed to
Imaging unit 11.
For the light source module 1 of the present embodiment also comprising polarisation unit 16, light enters polarisation unit after leaving imaging unit 11
16, and form parallel polarization light (P polarized lights) or vertical polarization light (S polarized lights).The present embodiment polarisation unit 16 is flat for one
For row polarising sheet, therefore the light from the polarisation unit 16 is parallel polarization light (P polarized lights).
Then, it is respectively stereogram and the side of the first polarization part of the first relay unit together with reference to figure 4A, 4B
Schematic diagram.Fig. 4 B are diagrammatic cross-sections of Fig. 4 A along AA secants.Wherein, Fig. 4 B, Fig. 4 A are only and simply illustrate, component size,
Quantity, shape are not limited to this embodiment system with simplification.
First relay unit 14 of the present embodiment includes multiple lens 141, one first polarization part 142, and multiple lens 141 are
Can be convex lens, light is transferred to the first polarization part 142.First polarization part 142 include at least multiple strips four/
One wave plate 142a, one first speculum 142b and the first black bar shade 142c.Those strip quarter-wave plates 142a
It is set on speculum 142b, the first black bar shade 142c is set on multiple strip quarter-wave plate 142a simultaneously
It is orthogonal with the direction of strip quarter-wave plate 142a arrangements.First black bar shade 142c is a shading element, by multiple
The black barn door of strip is formed, and is set between pixel to cover, absorb non-essential light, and improves whole shadow
The contrast ratio of picture.During actual fabrication, multiple strip quarter-wave plate 142a can be covered on to the side of substrate, and in opposite side
Directly transfer the first black bar shade 142c.First speculum 142b is set to the another of strip quarter-wave plate 142a
Side.
The configuration of second relay unit 15 is similar to the first relay unit 14, but the black bar of the second relay unit 15 hides
The position for covering configuration is different from the position that the black bar shade of the first relay unit 14 is configured, if such as the first relay unit 14
Black bar shade be configured at odd column, then the black bar shade of the second relay unit 15 can then be configured at even column, instead
It is as the same.Other than the position difference of black bar shade configuration, remaining element and interelement are similarly configured, therefore not
It repeats herein.
Fig. 4 C, 4D are the stereogram and diagrammatic cross-section of the another embodiment of the first polarization part of the first relay unit.
Fig. 4 D are diagrammatic cross-sections of Fig. 4 C along BB secants.
First polarization part 242 include quarter-wave plate 242a, the first speculum 242b, the second mirror matrix 242c,
Black bar shade 242d is formed, and the quarter-wave plate 242a of the present embodiment is rectangular plate-like, with previous embodiment strip
Quarter-wave plate 142a it is different.And second mirror matrix 242c be set on quarter-wave plate 242a, first is anti-
Penetrate the opposite side that mirror 242b is set to quarter-wave plate 242a.Black bar shade 242d is set to quarter-wave plate
242a, and make being aligned and (being staggered) for pixel with the second mirror matrix 242c.It is with previous embodiment deviation, this reality
Apply strip of the example using the quarter-wave plate 242a substitution previous embodiments of the second mirror matrix 242c collocation sheet
Quarter-wave plate 142a.The strip quarter-wave plate 142a of previous embodiment and second mirror matrix of the present embodiment
242c all corresponds to the pixel bars of imaging unit 11, the light that the part 242 that can will all polarize into first is configured of two embodiments
It is divided into the parallel polarization light (P polarized lights) and vertical polarization light (S polarized lights) of multiple array arrangements.Remaining application mode
And element is similar to previous embodiment, will not be described in great detail.
The traveling mode that will first describe the first light beam below.
Into the first light beam of the first relay unit 14, it will partly enter strip quarter-wave plate 142a and by first
Polarization part 142 is reflected after being converted into vertical polarization light (S polarized lights), not by the part of strip quarter-wave plate 142a
It is left after then being reflected (light of this part will maintain P polarized lights).Furthermore, the light of the first relay unit 14 is left
Line will form the different situation of odd column, even column polarization direction.
Then, the first light beam can be transferred to spectrophotometric unit 13 by the first relay unit 14 again, and the first light beam passes through light splitting single
Member 13 is simultaneously left.
Can arrange in pairs or groups the equivalent imaging schematic diagram of Fig. 2 and Fig. 5, Fig. 5 for the first and second relay units together at this time, wherein
Light path is equivalent light path without being fully equivalent to practical light path.From the figure it is clear that the primary optic axis and light of the first light beam
There is the first offset d1 between 1 primary optical axis of source module (principal axis).Furthermore, the unit 13 that is split is divided into
The first light beam optical axis it is different from primary optical axis, after the first relay unit 14, therefore the bore position of the first light beam can produce
Raw offset.
The traveling mode that will first describe the second light beam below.
Into the second light beam of the second relay unit 15, also can odd column, even column be converted by the second relay unit 15
The different situation of polarization direction.The second light beam of the second relay unit 15 is left, will then be again introduced into spectrophotometric unit 13, and
Be split the second reflecting surface 133a reflections of unit 13, and leaves beam splitter 13.
It can be seen that, have second between 1 primary optical axis of the second optical axis and light source module of the second light beam partially from Fig. 2, Fig. 5
Shifting amount d2.Furthermore, the optical axis of the second light beam that the unit 13 that is split is divided into is different from primary optical axis, by the second relaying
After unit 15, therefore the bore position of the second light beam can also generate offset.Furthermore, the offsets of the first offset d1 and second
It is opposite relative to the offset direction of the primary optical axis to measure d2.
Light source module has bore R, and offset d1, d2 of primary optic axis, the second optical axis is a quarter bore R.
If the bore R of the present embodiment is 28mm, primary optic axis, the second optical axis will be respectively with respect to key light axle offset 7mm.Primary optic axis
It is identical with the offset of the second optical axis.
Fig. 6 is please referred to, is the imaging schematic diagram of the first and second relay units.Diagram illustrates two sons being disposed adjacent
Bore Z1, Z2.What is illustrated on the left of Fig. 6 is then that light has not gone through beam splitter 13, the first relay unit 14, second relaying list
The imaging contexts (situation that light is shifted by not yet) of member 15, the right side of Fig. 6 is then that signal is passed through in beam splitter 13, first
Bore situation after unit 14, the offset of the second relay unit 15.It can be seen that from diagram, by such configuration, two sub- bores
Z1, Z2 are separated so that each rim of the mouth diameter Z1, Z2 enter display screen backstage and be easier to image in the adjacent ken respectively, therefore may be such that
Light source module 10 is in the case of the imaging area for being not required to increase imaging unit 11 so that the etendue multiplication of light source module 10.
Then, please continue to refer to the schematic diagram of Fig. 7 and Fig. 8, Fig. 7 for the projection arrangement of the present invention.Fig. 8 is projected for Fig. 7
The enlarged diagram of the angle modulation part of device.
The projection arrangement 2 of the present embodiment, including display screen 22 and light source module 21.
The display screen 22 of the present embodiment further includes pair of lamina cylindrical lenses 221, and two-layer columnar lens 221 have two columns
Lens jacket 221a, 221b and the omni-directional diffusion plate 221c being sandwiched between those cylindrical lenses layers 221a, 221b.Into two-layer columnar
The light of lens 221, it will after being collected by cylindrical lenses layer 221a and first imaged in omni-directional diffusion plate 221c, then it is saturating by column
Mirror layer 221b re-imagings are to the ken plane at the place of user.The enlargement ratio of two-layer columnar lens 221 is lens jacket
The ratio of the radius of curvature of 221a, 221b.Also that is, the ratio by adjusting radius of curvature can will enter two-layer columnar lens
The angle of divergence θ of 221 incident light zooms into angle of divergence Φ (can refer to Fig. 7).Such as the ratio of the radius of curvature of the present embodiment is
30, therefore, amplified angle of divergence Φ is 30 times of angle of divergence θ.
It illustrates, in order to make it easy to understand, the distance between each element of diagram, size have been overstated with minutia
Greatly, therefore the size Ying Fei of diagram is as the condition for limiting the present invention.
Also, cylindrical lenses layer 221a, 221b herein may be, for example, made by transparent material with a high refractive index
Ultraviolet hardening resin, thermosetting resin or plastics.And the shape of those first lens, those the second lens is round, oval
Shape, triangle or rectangular geometry etc..
The display screen 22 of the present embodiment further includes even light unit (not shown) so that light can be homogenized to form one
After strip-shaped light source, it is transferred to viewing side.The even light unit of the present embodiment may be, for example, integration rod (integration rod) or
Optical channel (light tunnel), system that but not limited to this.
The display screen 22 of the present embodiment further includes a collimation unit 222, is set to two-layer columnar lens 221 and light source die
Between block 21, it is rear parallel into two-layer columnar lens 221 that collimation unit 222 may be such that the light of entrance is collimated.In addition, this reality
A collimation unit 222 is applied as linear Fresnel lens.
Angle modulation part 224 is made of birefringence material, and angle modulation part 224 has multiple plane of refraction 224a.Example
Such as, after multiple jagged micro-structures being cut in a plastic base surface, a birefringence material is filled in those micro-structures
To form the angle modulation part 224 such as Fig. 8.And will be refracted by the vertical polarization light (S polarized lights) of plane of refraction 224a, and
If the light entered can be directly through plane of refraction 224a (will not deviation) for parallel polarization light (P polarized lights).By such design,
The angle of emergence into the light for leaving angle modulation part 224 will be caused to increase another angle of emergence (with respect to its incidence angle).
Furthermore, if the angle of incidence of light that light source module 21 is provided is θ, light can through over-angle modulation part 224
Incidence angle increases to θ ', at this time the incidence angle received by two-layer columnar lens 221 will not be θ but θ ', finally image in sight
The angle of divergence Φ for seeing side can also increase.Such screen design, will can pass through in the case of the design for not adjusting light source module 21
Etendue is increased in the mode of display 22 arrangement angles modulation part 224 of screen.
However, aforementioned light source module also can be used in the light source module 21 of the present embodiment, but not with aforementioned light source module
For limitation.Etendue can then be doubled in light source module according to aforementioned light source module, then led to then at 22 side of display screen
Over-angle modulation part 224 again doubles etendue, thus can be not required to increase imaging unit imaging area in the case of,
The etendue amplification of projection arrangement is quadrupled.The detailed structure and application process of aforementioned light source module 21 will not go to live in the household of one's in-laws on getting married again
It states.
Then, it is the enlarged diagram of the another embodiment of angle modulation part of Fig. 7 projection arrangements please also refer to Fig. 9.
Fig. 9 is please refer to, compares the angle modulation part 224 of Fig. 8, the angle modulation part 324 of the present embodiment includes a sawtooth
Shape prism 324a, strip half-wave plate 324b and a polarizer 324c.And polarizer 324c is to make those parallel polarization light (P
Polarized light) pass through.
The light of entry angle modulation part 324 includes parallel polarization light (P polarized lights) and (the S polarization of vertical polarization light
Light).Zigzag prism 324a, which includes one, has multiple planes of refraction, and the angle of adjacent plane of refraction is different.Zigzag prism
324a and strip half-wave plate 324b aligned in position, furthermore, the plane of refraction of zigzag prism 324a correspond to the respectively strip half
Wave plate 324b is set.By zigzag prism 324a and into the part light of strip half-wave plate 324b, (S's vertical polarization light polarizes
Light) parallel polarization light (P polarized lights), parallel polarization light (P polarized lights) will be converted into will be by conversion vertical polarization light (S
Polarized light).Conversely, not entering by zigzag prism 324a but the part light of strip half-wave plate 324b, it will keep original and hang down
Straight polarized light (S polarized lights) and parallel polarized light (P polarized lights).Then polarizer 324c will stop (the S polarization of vertical polarization light
Light), therefore the light for leaving angle modulation part 324 is all parallel polarization light (P polarized lights).However, by zigzag prism 324a,
The angle of emergence for leaving the incident ray of angle modulation part 324 will be caused to become two angles of emergence (with respect to its incidence angle).It is flat
Row polarization incident ray goes to a positive angle, and vertical polarization incident ray all goes to another opposing angular
Herein the technique effect of setting angle modulation part 324 and with the collocation mode of other elements and previous embodiment phase
Seemingly, it therefore will not be described in great detail.
In conclusion the light source module that the present embodiment is provided, it can be anti-by the transmission plane setting first in spectrophotometric unit
The mode in face is penetrated, light is divided into the first light beam and the second light beam, and the first light beam and the second light beam will respectively enter
One relay unit and the second relay unit.Into the first relay unit, the first light beam of the second relay unit and the second light beam
Optical axis will have an offset with respect to primary optical axis.Therefore, it may be such that the light angle quantity that parses for leaving light source module increases
(etendue increase), and reach in the case where not changing imaging unit, being not required to increase imaging unit, increase the analysable ken
The purpose of quantity.
The foregoing is merely illustrative rather than it is restricted person.Any spirit and scope without departing from the present invention, and to it
The equivalent modifications of progress or change, are intended to be limited solely by claim.
Claims (21)
1. a kind of light source module, for a display device, and the light source module has a primary optical axis, which is characterized in that the light source
Module includes：
One light source provides a light；
One imaging unit；
One spectrophotometric unit, has a transmission plane, one first reflecting surface and one second reflecting surface, and first reflecting surface with this
Two reflectings surface are symmetrical arranged；
One first relay unit；And
One second relay unit,
Wherein, the light is sequentially by the imaging unit, the spectrophotometric unit, and the part light forms one first light beam, part is somebody's turn to do
Light forms one second light beam, which enters first relay unit by first reflective surface, first relaying
First light beam is transferred to the spectrophotometric unit by unit again, which passes through the spectrophotometric unit and leave；
Wherein, second light beam pass through the spectrophotometric unit enter second relay unit, second relay unit again by this second
Light beam is transferred to second reflecting surface of the spectrophotometric unit, which leaves the light splitting by second reflective surface
Unit,
Wherein there is one first offset between the primary optic axis and the primary optical axis of first light beam, the one second of second light beam
There is one second offset between optical axis and the primary optical axis, first offset is identical with second offset, first offset
With second offset relative to the offset direction of the primary optical axis on the contrary,
Wherein first relay unit include one first polarization part, this first polarization part include a black bar shade, one or four points
One of wave plate and a speculum, the quarter-wave plate be set on the speculum, which is set to this four points
One of on wave plate.
2. light source module as described in claim 1, the wherein light source module have a bore, and the primary optic axis, this second
The offset of optical axis is a quarter bore.
3. light source module as described in claim 1, the wherein imaging unit are digital micro-mirror device or a liquid crystal display device.
4. light source module as described in claim 1, the wherein light source are a laser light source or a laser source array.
5. light source module as described in claim 1, also comprising a polarisation unit, it is laggard to leave the imaging unit for the wherein light
Enter the polarisation unit, and form a parallel polarization light or a vertical polarization light.
6. light source module as described in claim 1, wherein the quarter-wave plate is strip, the black bar shade and item
The direction of shape quarter-wave plate arrangement is orthogonal.
7. light source module as described in claim 1, also comprising an optical scanning element, the wherein light passes through the optical scanning element
The imaging unit is transferred to, and the optical scanning element makes the one of the optical scanning element to reflect deflecting facet according to different sequential, with shape
Into multiple and different imagings.
8. light source module as claimed in claim 7, wherein the optical scanning element are voice coil motor, polygonal mirror or microcomputer Electronic Speculum
Piece.
9. light source module as described in claim 1, the wherein spectrophotometric unit further include one first sub- prism, one second sub- prism
And the sub- prism of third, the first sub- prism form the transmission plane, which is set to this with the sub- prism of the third
The transmission plane of first sub- prism, first reflecting surface are set to side of the second sub- prism with respect to the sub- prism of the third, should
Second reflecting surface is set to side of the sub- prism of the third with respect to the second sub- prism.
10. a kind of display device, which is characterized in that including：
One display screen；And
One light source module, has a primary optical axis, which includes：
One light source provides a light；
One imaging unit；
One spectrophotometric unit, has a transmission plane, one first reflecting surface and one second reflecting surface, and first reflecting surface with this
Two reflectings surface are symmetrical arranged；
One first relay unit；And
One second relay unit；
Wherein, the light is sequentially by the imaging unit, the spectrophotometric unit, and the part light forms one first light beam, part is somebody's turn to do
Light forms one second light beam, which enters first relay unit by first reflective surface, first relaying
First light beam is transferred to the spectrophotometric unit by unit again；
Wherein, second light beam pass through the spectrophotometric unit enter second relay unit, second relay unit again by this second
Light beam is transferred to second reflecting surface of the spectrophotometric unit, which is transferred to this point by second reflective surface
Light unit,
Wherein there is one first offset between the primary optic axis and the primary optical axis of first light beam, the one second of second light beam
There is one second offset between optical axis and the primary optical axis, first offset is identical with second offset, which is somebody's turn to do
Second light beam is transferred to the display screen by the spectrophotometric unit,
Wherein first relay unit of the light source module includes one first polarization part, which includes a black bar
Shade, a quarter-wave plate and a speculum, the quarter-wave plate are set on the speculum, which sets
It is placed in the quarter-wave on piece.
11. display device as claimed in claim 10, the wherein light source module have a bore, and the primary optic axis, this
The offset of two optical axises is a quarter bore.
12. display device as claimed in claim 10, the wherein imaging unit are filled for digital micro-mirror device or a liquid crystal display
It puts.
13. display device as claimed in claim 10, the wherein light source are a laser light source or a laser source array.
14. display device as claimed in claim 10, the wherein light source module be also comprising a polarisation unit, wherein the light from
Enter the polarisation unit, and form a parallel polarization light or a vertical polarization light after opening the imaging unit.
15. display device as claimed in claim 10, wherein the quarter-wave plate is strip, the black bar shade
It is orthogonal with the direction of strip quarter-wave plate arrangement.
16. display device as claimed in claim 10, the wherein light source module are also comprising an optical scanning element, the wherein light
The imaging unit is transferred to, and the optical scanning element is deflected according to different sequential by the optical scanning element, with formed it is multiple not
With imaging.
17. display device as claimed in claim 16, wherein the optical scanning element are voice coil motor, polygonal mirror or microcomputer Electronic Speculum
Piece.
18. display device as claimed in claim 10, the wherein spectrophotometric unit further include one first sub- prism, one second sub- rib
Mirror and the sub- prism of a third, the first sub- prism form the transmission plane, which is set to the sub- prism of the third
The transmission plane of the first sub- prism, first reflecting surface are set to side of the second sub- prism with respect to the sub- prism of the third,
Second reflecting surface is set to side of the sub- prism of the third with respect to the second sub- prism.
19. display device as claimed in claim 10, wherein the display screen include pair of lamina cylindrical lenses, the two-layer columnar
Lens are sandwiched in the omni-directional diffusion plate between those cylindrical lenses layers with two cylindrical lenses layers and one.
20. display device as claimed in claim 10 further includes an angle modulation part, wherein the angle modulation part is included by double
Multiple planes of refraction that refraction material is formed.
21. display device as claimed in claim 10 further includes an angle modulation part, wherein the angle modulation part includes one partially
Tabula rasa, multiple strip half-wave plates and a zigzag prism, which includes multiple planes of refraction, and respectively the plane of refraction corresponds to
Respectively the strip half-wave plate is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004580.6A CN105824126B (en) | 2015-01-06 | 2015-01-06 | Light source module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004580.6A CN105824126B (en) | 2015-01-06 | 2015-01-06 | Light source module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105824126A CN105824126A (en) | 2016-08-03 |
| CN105824126B true CN105824126B (en) | 2018-06-29 |
Family
ID=56513649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510004580.6A Expired - Fee Related CN105824126B (en) | 2015-01-06 | 2015-01-06 | Light source module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105824126B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646885B (en) * | 2016-12-30 | 2020-02-11 | 苏州苏大维格光电科技股份有限公司 | Projection objective and three-dimensional display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435916A (en) * | 2007-11-15 | 2009-05-20 | 船井电机株式会社 | Image display apparatus |
| CN103502882A (en) * | 2011-05-10 | 2014-01-08 | 索尼公司 | Illumination device and display unit |
| CN203732871U (en) * | 2013-12-18 | 2014-07-23 | 吴震 | Light emitting device and projection display system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010116427A1 (en) * | 2009-04-08 | 2010-10-14 | 三菱電機株式会社 | Projection display device |
| TW201106014A (en) * | 2009-06-17 | 2011-02-16 | Alps Electric Co Ltd | Rgb light source module |
| JP5674023B2 (en) * | 2011-01-27 | 2015-02-18 | ソニー株式会社 | Light source device and display device |
-
2015
- 2015-01-06 CN CN201510004580.6A patent/CN105824126B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435916A (en) * | 2007-11-15 | 2009-05-20 | 船井电机株式会社 | Image display apparatus |
| CN103502882A (en) * | 2011-05-10 | 2014-01-08 | 索尼公司 | Illumination device and display unit |
| CN203732871U (en) * | 2013-12-18 | 2014-07-23 | 吴震 | Light emitting device and projection display system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105824126A (en) | 2016-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3770669B1 (en) | Display apparatus and display method | |
| CN101568873B (en) | Autostereoscopic display device and system using the same | |
| CN107209372B (en) | Display system | |
| CN101859052B (en) | Projector | |
| US20110188116A1 (en) | Device for generation of three-demensional images | |
| CN108828893A (en) | Three-dimensional display system based on Lenticular screen | |
| US9846310B2 (en) | 3D image display device with improved depth ranges | |
| US20160252739A1 (en) | Stereoscopic display device | |
| KR20060096228A (en) | 2d and 3d image switching display system | |
| US10534192B2 (en) | Stereo display panel and display device having the stereo display panel | |
| US9377676B2 (en) | Autostereoscopic display device | |
| US11973929B2 (en) | Image display apparatus | |
| CN105824126B (en) | Light source module and display device | |
| CN209707832U (en) | Integration imaging double vision 3D display device based on slit grating and polarizing film | |
| TWI448731B (en) | Projection apparatus for providing multiple viewing angle images | |
| US9829714B2 (en) | Illumination module and display device | |
| KR102172408B1 (en) | Three-dimensional image projection apparatus | |
| KR101746719B1 (en) | Output method of view images in three-dimensional display by different distance between display panel and lens | |
| US6324009B1 (en) | Optically anisotropic micro lens window for special image effects featuring periodic holes | |
| US9268077B2 (en) | Projection device | |
| US9442301B2 (en) | Autostereoscopic display device and autostereoscopic display method using the same | |
| CN209707826U (en) | One-dimensional integrated imaging double vision 3D display device based on polarizing film | |
| Travis et al. | Flat projection for 3-D | |
| JP2005070353A (en) | Picture display device | |
| US9217875B1 (en) | Multi-view auto-stereoscopic display and angle magnifying screen thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20210106 |