CN107436526A - A kind of light supply apparatus and projection display equipment - Google Patents
A kind of light supply apparatus and projection display equipment Download PDFInfo
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- CN107436526A CN107436526A CN201710060013.1A CN201710060013A CN107436526A CN 107436526 A CN107436526 A CN 107436526A CN 201710060013 A CN201710060013 A CN 201710060013A CN 107436526 A CN107436526 A CN 107436526A
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- Prior art keywords
- light
- supply apparatus
- prism wedge
- light supply
- prism
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
Abstract
The present invention relates to a kind of light supply apparatus and projection display equipment.Fluorophor is irradiated to after output light optically focused due to making semiconductor laser and is excited and makes the light source volume of this mode of light-emitting phosphor larger, therefore causes the maximization of projection display equipment.The present invention is irradiated to the optical system of fluorophor using the parallel anaclasis for making short wavelength by prism wedge and after compressing through collector lens group optically focused again, so as to realize very small-sized light supply apparatus.Using the light supply apparatus, projection display equipment can be minimized.
Description
Technical field
The present invention relates to a kind of light supply apparatus for possessing semiconductor laser and fluorophor and use the light supply apparatus
Projection display equipment.
Background technology
In recent years, a kind of semiconductor laser for the light that short wavelength is exported with high-luminous-efficiency is developed.Propose and use this
Plant the output light excited fluophor of semiconductor laser and make using the light after wavelength convert as the light source of projection display equipment
Technical scheme.
A kind of output light for the semiconductor laser for making two-dimensional arrangements by Large Aperture Lenses group has been recorded in patent document 1
Fluorescence colour wheel is condensed to, light color selection is carried out to the fluorescence sent by the fluorescence colour wheel excited by colour filter, passed through
The spatial light modulation devices such as DMD (DMD, Digital Micromirror Device) are carried out to the light selected
The projection display equipment of modulation.
A kind of semiconductor laser for making two-dimensional arrangements by multiple speculums and collector lens group has been recorded in patent document 2
The output light of device is condensed to the light supply apparatus and projection display equipment of fluorophor and excited fluophor.
Though recorded in patent document 3 it is a kind of be not projection display equipment as optical fiber laser excite use and
The output light of semiconductor laser is set to incide prism and the light concentrating components projected again from prism after the total reflection of prism inner face.
Patent document 1：Japanese Patent Publication 2014-160227 publications
Patent document 2：Japanese Patent Publication 2012-195064 publications
Patent document 3：Japanese Patent Publication 2008-28019 publications
Filled in the output light by semiconductor laser as described in Patent Document 1 come the Projection Display of excited fluophor
In putting, in order to improve the intensity of exciting light, it is necessary to using multiple semiconductor lasers.
Therefore, using the excitation source of semiconductor laser two-dimensional arrangements ensured into the intensity of exciting light, but because half
Conductor laser can cause job insecurity or luminous efficiency to reduce if high temperature is produced due to heating when working, so
Limitation be present in configuration density when arranging semiconductor laser.
Therefore, when being intended to use multiple semiconductor lasers, the area that excitation source occupies increases, and for making to excite
The optical system of light optically focused also occupies larger space, so as to cause the volume of projection display equipment to increase.
Such as, it is necessary to accounting for using the excitation source that can cover two-dimensional arrangements in the device described in patent document 1
There is the bigbore collector lens group of area.
In the device described in patent document 2, partly leading for two-dimensional arrangements is made by multiple speculums and collector lens group
The output light of body laser is condensed to fluorophor, and in order to critically configure multiple speculums, it is necessary to large-scale and regulation complexity
Supporting construction, cause the bulky without convenient use of projection display equipment.
The content of the invention
The present invention be in view of so the problem of and make, and it is an object of the present invention to provide a kind of by very small-sized optical system
Make the light supply apparatus and possess the light that the output light of the semiconductor laser of two-dimensional arrangements is condensed to fluorophor and excited
The small-sized projection display equipment of source device.
The present invention is a kind of light supply apparatus, it is characterised in that is possessed：Light-emitting element array, it is configured with array-like multiple
Blue laser light source；Multiple collimation lenses, it is corresponding with each blue laser light source and set；Prism wedge, receive from
The directional light that the collimation lens projects, make the parallel anaclasis of receiving and projected as the directional light after compression；It is and poly-
Light unit, make the directional light optically focused of the prism wedge injection and be irradiated to fluorophor.
In addition, the present invention is a kind of projection display equipment, it is characterised in that is possessed：Light supply apparatus；Light color selection is single
Member；Reflection optical modulator part or transmission-type light modulator part；And projection lens.The light supply apparatus possesses：Luminescent device
Array, multiple blue laser light sources are configured with array-like；Multiple collimation lenses, it is corresponding with each blue laser light source
And set；Prism wedge, receive the directional light projected from the collimation lens, after making the parallel anaclasis of receiving and being used as compression
Directional light and project；And light focusing unit, make the directional light optically focused of the prism wedge injection and be irradiated to fluorophor.
In accordance with the invention it is possible to provide a kind of semiconductor laser for making two-dimensional arrangements by very small-sized optical system
The output light light supply apparatus that is condensed to fluorophor and is excited.Further, using the teaching of the invention it is possible to provide one kind possesses the light supply apparatus
Small-sized projection display equipment.
Brief description of the drawings
Fig. 1 is the Sketch schematic diagram of the projection display equipment as first embodiment.
Fig. 2 is the structural representation of light supply apparatus.
Fig. 3 (a) is the top view of light source assembly, and Fig. 3 (b) is the side view of light source assembly, and Fig. 3 (c) is light source
The side view in other directions of component.
Fig. 4 (a) is an example of the configuration of light source module group, and Fig. 4 (b) is another example of the configuration of light source module group
Son, Fig. 4 (c) are another examples of the configuration of light source module group.
Fig. 5 is the structural representation of light supply apparatus.
Fig. 6 is the Sketch schematic diagram of the projection display equipment as second embodiment.
Fig. 7 is the schematic diagram of another structure of light supply apparatus.
Fig. 8 is the schematic diagram of another structure of light supply apparatus.
Fig. 9 is the schematic diagram of another structure of light supply apparatus.
Figure 10 is the schematic diagram of another structure of light supply apparatus.
Figure 11 be light supply apparatus another structure and projection display equipment Sketch schematic diagram.
Symbol description
1 ... light supply apparatus
11 ... light source assemblies
12 ... light source assemblies
13 ... prism wedges
14 ... prism wedges
15 ... collector lens groups
16 ... have the tabular rotary body of fluorophor
31 ... module group substrates
32 ... LASER Light Sources
33 ... collimation lenses
130 ... light colors select colour wheel
160 ... optical modulation devices
180 ... projection lens
190 ... projection screens
670 ... cross colour splitting prisms
682 ... red (R) use transmissive liquid crystal panel
684 ... green (G) use transmissive liquid crystal panel
686 ... blue (B) use transmissive liquid crystal panel
690 ... projection lens
115 ... parabolic mirrors
116 ... retroreflectors
911 ... dichroscopes
914 ... dichroscopes
Embodiment
Referring to the drawings, embodiments of the present invention are illustrated.
[first embodiment]
Fig. 1 is shown as the light supply apparatus of the first embodiment of the present invention and possesses the Projection Display of the light supply apparatus
The Sketch of device.
(apparatus structure)
As shown in figure 1, the projection display equipment as first embodiment possess light supply apparatus 1, relay lens group 120,
Light color selection colour wheel 130, optical channel 140, illuminating lens group 150, optical modulation device 160, prism 171, prism 172, projection
Camera lens 180.There is also the situation for being further equipped with projection screen 190.
Light supply apparatus 1 possesses light source assembly 11, light source assembly 12, prism wedge 13, prism wedge 14, collector lens group
15th, there is the tabular rotary body 16 of fluorophor.Subsequently it is discussed in greater detail on light supply apparatus 1.
Relay lens group 120 is the light directing light color selection colour wheel 130 for light supply apparatus 1 to be sent and then is condensed to
The lens group of the entrance port of optical channel 140, it is made up of single or multiple lens.
Illuminating lens group 150 be by through the light shaping that optical channel 140 is propagated suitable for being illuminated to optical modulation device
The lens group of light beam, it is made up of single or multiple lens.
Prism 171 and prism 172 collectively form inner full-reflection (TIR, Total Internal Reflection) rib
Mirror.TIR prism makes illumination light carry out inner full-reflection and incide optical modulation device with set angle, and makes optically modulated device
Reflected light after part modulation transmits towards projection lens 180.
Optical modulation device 160 is the device being modulated based on picture signal to incident light, uses and is provided with array-like
The DMD of micro mirror element.But other reflection optical modulator parts of such as reflective liquid crystal on silicon etc can also be used.
Projection lens 180 is the camera lens for the light after optical modulation device is modulated to be projected as to image, by single or
Multiple lens are formed.
Projection screen 190 uses when forming rear surface projection type display device, although in addition, often in the case of front projection type
Set, but be not necessarily required to possess when user is projected to any metope etc..
(light supply apparatus)
It is described in detail below for light supply apparatus 1.
Fig. 2 is to extract the light supply apparatus 1 of Fig. 1 projection display equipment and show, possesses light source assembly 11, light
Source component 12, prism wedge 13, prism wedge 14, collector lens group 15, the tabular rotary body 16 with fluorophor.
In fig. 2, C is the center line of collector lens group 15.Light source assembly 11 and light source assembly 12 are relative to collector lens
The center line C balanced configurations of group.Equally, C pairs of the center line of prism wedge 13 and prism wedge 14 also relative to collector lens group
Claim configuration.
Illustrated first against light source assembly.Light source assembly 11 and light source assembly 12 are each provided with：Multiple blue lasers
Light source, configured with array-like；And multiple collimation lenses, it is corresponding with each blue laser light source and configure, blue laser light
Source and collimation lens are by modularity.The blue laser light source used in light source assembly is to send the semiconductor laser of blue light.
In order to illustrate the internal structure of light source assembly 11 and light source assembly 12, show to overlook in Fig. 3 (a)
Figure, the side view observed from different directions is shown in Fig. 3 (b) and Fig. 3 (c).
As Fig. 3 (b) and Fig. 3 (c) side view shown in, module group substrates 31, multiple blue laser light sources 32 and more
Individual collimation lens 33 is integrated as module 300.
As shown in the top view of Fig. 3 (a), a module 300 includes blue laser light source 32 and enters row matrix row with 2 × 4
Arrange the light-emitting element array formed.But the scale of matrix arrangement that a module includes is not limited thereto example, Ke Yishi
More massive matrix arrangement or vertical and horizontal are the matrix arrangement of identical quantity.
From the light of each LASER Light Source 32 output by the effect of collimation lens 33 and as almost parallel light from light source
Component projects.
Furthermore a light source assembly can be made up of a module, but in order to ensure required light quantity, can also be by multiple
Module forms a light source assembly.
For example, can as shown in Fig. 4 (a), by module 300 it is transversely arranged it is multiple configure, can also such as Fig. 4 (b)
Or shown in Fig. 4 (c), module 300 is combined to configure horizontal and vertical.
Next, the part of the feature to being properly termed as the present invention, that is, it is almost parallel by being projected from light source assembly
Light be compressed by being used as the prism wedge of dioptric system and be oriented to the part of collector lens group and illustrate.
Fig. 5 is matching somebody with somebody for light source assembly 11, light source assembly 12, prism wedge 13, prism wedge 14 and collector lens group 15
The schematic diagram put.
As previously described, light source assembly 11 and light source assembly 12 relative to collector lens group center line C balanced configurations.Together
The center line C balanced configurations of sample, prism wedge 13 and prism wedge 14 also relative to collector lens group 15.
Light source assembly 11 and light source assembly 12 are configured as the parallel rays from light source assembly injection relative to collector lens
Angle of the center line C-shaped of group into α.α is referred to as to the inclination angle of prism incidence light.
Prism wedge 13 and prism wedge 14 each have light entrance face S (IN) and light emergence face S (OUT), these faces
The drift angle formed is set to β.β is referred to as to the drift angle of prism wedge.
The position of prism wedge 13 be set so that from light source assembly 11 project parallel rays it is generally perpendicularly incident
To light entrance face S (IN), and the parallel rays entered in prism light emergence face S (OUT) reflect and with collector lens group
Heart line C is abreast projected.
Equally, the position of prism wedge 14 be set so that from light source assembly 12 project parallel rays generally perpendicularly
Incide light entrance face S (IN), and the parallel rays entered in prism light emergence face S (OUT) reflect and with collector lens group
15 center line C is abreast projected.
By the optical path width of the almost parallel light projected from light source assembly be set to A, will be projected from prism wedge it is big
When causing the optical path width of parallel light to be set to B, according to the present invention it is possible to make A ＞ B.If here, B/A is set into compression ratio CR,
Then CR is more less than 1, more can minimize collector lens group 15.According to the present invention, make to incide prism wedge by reflecting
Directional light is projected and compressed, so as to realize small compression ratio CR with very small-sized optical system.
For example, using when sending the semiconductor laser of blue light as LASER Light Source, as the material of prism wedge, fit
Close using the high and cheap glass material BK7 of the transmissivity of blue light.BK7 is for the wavelength 450nm refractive index of light
1.526。
The directional light that light source assembly projects is set to be advanced with inclination alpha=32 degree to set light source assembly.By the top of prism wedge
Angle beta is set to 38.01 degree, the directional light from light source assembly is impinged perpendicularly on light entrance face S (IN) for 0 degree with incidence angle.Into
Light in prism wedge is with 38.01 degree of incident angles to light emergence face S (OUT), in the interfacial refraction with air and conduct
The light parallel with the center line C of collector lens group 15 projects from prism wedge.At this moment, compression ratio CR is 0.434, i.e., 43%.
Certainly, according to the present invention, for realizing that the actual conditions of the compression ratio less than 1 is not limited solely to above-mentioned example
Son.But in order to project light, it is necessary to which the light for making to enter in prism wedge is in light emergence face S (OUT) and air by reflecting
Interface is not totally reflected.
Impinged perpendicularly at 0 degree with incidence angle in light entrance face S (IN) first embodiment, at light emergence face S (OUT)
The condition that full transmitting occurs is provided by following formula (1).
θ Max=ARCSIN (1/n) ... (1)
Wherein, in formula (1), θ Max are the angles that the light entered in prism is totally reflected in light emergence face S (OUT), and n is
Prism material is directed to the refractive index using wavelength.
Calculated in refractive index, the i.e. n=1.526 of the light for wavelength 450nm presented using BK7 glass materials
In the case of, angle of total reflection θ Max are 40.943 degree.
The compression ratio CR that can realize refractive index n=1.526 prism in the range of no more than this boundary and inclination angle
α, the example of combination of apex angle ss are shown in table 1.
【Table 1】
| Inclination alpha | Apex angle ss | Compression ratio CR (%) |
| 48 | 40.94 | 2 |
| 46 | 40.87 | 7 |
| 44 | 40.73 | 12 |
| 42 | 40.52 | 17 |
| 40 | 40.22 | 22 |
| 38 | 39.83 | 27 |
| 37.0 | 39.61 | 30 |
| 36 | 39.35 | 33 |
| 35 | 39.06 | 35 |
| 34 | 38.74 | 38 |
| 32 | 38.01 | 43 |
| 30 | 37.15 | 49 |
| 28 | 36.12 | 54 |
| 26 | 34.94 | 59 |
| 24 | 33.59 | 64 |
| 21.8 | 31.85 | 70 |
| 20 | 30.25 | 74 |
For example, projected from collimation lens and incide the directional light of the prism wedge relative to the center of collector lens group
The inclination alpha that line is formed is preferably more than 20 degree and less than 48 degree.
On compression ratio CR, high compression can be carried out until compression ratio CR is 2%.But if reducing compression ratio, will
Close to the total reflection condition above obtained, even if therefore it should be noted that the only fraction of inaccuracy of configuration of light source or prism, characteristic
Also can sensitively change.
Though in addition, not recorded in table 1, light supply apparatus of the compression ratio more than 74% can also be realized, and if compression
Close to 100%, then the contribution to miniaturization of the apparatus this purpose can reduce rate.
Therefore, if it is considered that reliability in practical use and miniaturization advantage, on compression ratio CR, more than 30% and 70%
It is ideal range below.
Or the apex angle ss as prism wedge, more than 31 degree and less than 40 degree are ideal ranges.
As described above, the directional light of light source assembly output compresses through prism wedge and incided as the directional light after compression
Collector lens group 15.Therefore, it is possible to reduce the diameter of collector lens group.
Collector lens group 15 makes incident light be condensed to the tabular rotary body 16 with fluorophor.
In the present embodiment, as shown in Fig. 2 there is fluorophor using what can be pivoted about with rotary shaft Ap
Tabular rotary body be used as fluorophor.
It is the region movement in order that illuminated using the reasons why tabular rotary body that can be rotated so that although to fluorescence
Body irradiation makes the exciting light of the high intensity after blue laser optically focused, but will not prolonged exposure fixing point and burn bad
Change.
As fluorescent material, can be sent containing red color components and green components using by irradiating blue excitation light
Sodium yellow material.For example, the fluorescent material (Y, Gd) of YAG series3(Al,Ga)5O12:Ce。
In addition, in a part for tabular rotary body, the area for being directed through blue light without fluorophor is provided with
Domain.Therefore, when rotating tabular rotary body, sodium yellow and blue light can alternately be projected.
As described above, in the present embodiment, after the parallel anaclasis for making short wavelength by prism wedge and compressing
Again by small-sized collector lens group and the system of excited fluophor, so as to realize very small-sized light supply apparatus.
(action of projection display equipment)
Fig. 1 is returned below, and the molar behavior of projection display equipment is illustrated.
The light projected from the tabular rotary body 16 with fluorophor passes through relay lens group 120, is directed to light color selection
Colour wheel 130.
Light color selection colour wheel 130 is the tabular rotary body that can be pivoted about with rotary shaft Ac, is matched somebody with somebody with sector
It is equipped with the filter disc of RGB (RGB) each color.But if the purity of incident blue light is high, blue (B) filter can also be not provided with
Piece and sector notch (light transmission department) is set.
Tabular rotary body 16 and light color selection colour wheel 130 with fluorophor are synchronously rotated, and Huang is projected from the former
During coloured light, during red (R) filter disc of configuration, red light is through light color selection colour wheel 130；When projecting sodium yellow from the former,
During green (G) filter disc of configuration, green light is through light color selection colour wheel 130；It is blue in configuration when projecting blue light from the former
During color filter disc, blue light is through light color selection colour wheel 130.
Incided through the light of light color selection colour wheel 130 by optical channel 140 and illuminating lens group 150 as TIR
The prism of prism.Optical modulation device 160 is incided with set angle in the light that the fully reflecting surface of prism 171 reflects.
Optical modulation device 160 has the micro mirror element set with array-like, and each micro mirror element is driven according to picture signal,
Image light is reflected with first retainer to prism 171.Image light penetration prism 171 and prism 172, are directed to projection lens,
And project on projection screen 190.
In the projection display equipment described above as first embodiment, parallel anaclasis is made by prism wedge
And the light supply apparatus of the invention compressed is suitable as small-sized light supply apparatus and used, and can realize the small-sized of projection display equipment
Change.
[second embodiment]
In the first embodiment, reflection optical modulator part 160 has been used, and in this second embodiment, using saturating
Penetrate formula optical modulation device.
Fig. 6 is the Sketch schematic diagram of the projection display equipment as second embodiment of the present invention.
(apparatus structure)
As shown in fig. 6, the projection display equipment of second embodiment possesses：Light supply apparatus 1；Relay lens group 610；First
Lens array 620；Second lens array 630；Polarisation switching device 640；It is superimposed lens 650；Dichroscope 660,661；Reflection
Mirror 662,663,664；Cross colour splitting prism 670；Red (R) uses lens 681；Red uses transmissive liquid crystal panel 682；Green
(G) lens 683 are used；Green uses transmissive liquid crystal panel 684；Blue (B) uses lens 685；Blueness transmissive liquid crystal panel
686；Projection lens 690.There is also the situation for being further equipped with projection screen 691.
It is roughly the same with first embodiment on light supply apparatus 1.That is, the directional light that light source assembly 11,12 projects is through wedge
Shape prism 13,14 compresses and incides collector lens group 15 as directional light.Collector lens group 15, which is condensed to incident light, to be had
The tabular rotary body 16 of fluorophor.
The light projected from light supply apparatus 1 is directed to the first lens array 620 by relay lens group 610.First lens array
Row 620 possess in order to light is divided into multiple beamlets and with multiple lenslets of rectangular configuration.Second lens array 630 with
And superposition lens 650 make the image of the lenslet of the first lens array 620 image in red transmissive liquid crystal panel 682, green
Color transmissive liquid crystal panel 684, blueness are near the picture area of transmissive liquid crystal panel 686.First lens array 620,
Second lens array 630 and superposition lens 650 make the luminous intensity of light supply apparatus 1 direction in the face of transmissive liquid crystal panel equal
Homogenize.
The beamlet that first lens array 620 is split is converted to linear polarization by polarisation switching device 640.
Dichroscope 660 is the dichroscope for making red reflective and making green light and blue light transmission.Dichroscope 661
It is the dichroscope for reflecting green light and passing through blue light.
Speculum 662 and 663 is the speculum for reflecting blue light.Speculum 664 is the speculum for making red reflective.
Red transmissive liquid crystal panel 682 is incided via red lens 681 as the red light after linear polarization,
It is modulated according to picture signal, and is projected as image light.In addition, in red with lens 681 and red transmission liquid crystal
It is between panel 682 and red with being each configured with incident lateral deviation between transmissive liquid crystal panel 682 and cross colour splitting prism 670
Tabula rasa (not shown) and exiting side Polarizer (not shown).
Same with red light, green light is modulated through green transmissive liquid crystal panel 684, blue light is through blueness transmission-type
Liquid crystal panel 686 is modulated and projected as image light.
Cross colour splitting prism 670 is to form four right-angle prism bondings, on the X-shaped interface of binding part, formed with
Dielectric multilayer-film.
From the red image light exported with transmissive liquid crystal panel 682 and blueness transmissive liquid crystal panel 686 through being situated between
Matter multilayer film is reflected to projection lens 690, and the image light that transmissive liquid crystal panel 684 exports is used towards projection lens from green
690 and pass through dielectric multilayer-film.
The image light of each color is applied and projected to by projection lens 690 on projection screen 691.
In the projection display equipment described above as second embodiment, directional light is made by prism wedge
The light supply apparatus of the invention for reflecting and compressing also is suitable as small-sized light supply apparatus and used, and can realize projection display equipment
Miniaturization.
[other embodiment of light supply apparatus]
In first embodiment and second embodiment, as light supply apparatus, showing will penetrate from light source assembly 11
The parallel rays gone out generally perpendicularly incides the light entrance face S (IN) of prism wedge 13 example, but the embodiment party of the present invention
Formula is not limited to this.
For example, as shown in fig. 7, it also likely to be present the principal plane and prism wedge 13 of light source assembly 11 and light source assembly 12
And the not parallel situations of light entrance face S (IN) of prism wedge 14.Even if the light that prism wedge is incided from light source assembly enters
The incidence angle for penetrating face S (IN) directional light be relative to the incline direction within 5 degree of vertical direction, also with implementation described above
Mode similarly can project directional light compression by reflecting.
In addition, in first embodiment and second embodiment, as light supply apparatus, show two wedge-shaped ribs
Mirror is relative to the example of the center line C balanced configurations of collector lens group, but embodiments of the present invention are not limited to this.
For example, it is also possible to for as shown in Figure 8 relative to the asymmetrical systems of center line C of collector lens group.In fig. 8,
Light source assembly 81 and prism wedge 83, light source assembly 82 and prism wedge 84 are paired respectively.Moreover, light source assembly 81 and wedge-shaped rib
Mirror 83 is undertaken across the center line C of collector lens group region, and directional light is projected to collector lens group 15.
In the example of fig. 8, more than the center line C of collector lens group region is undertaken by two prism wedges, certainly
The prism wedge of more than three can be used.Alternatively, it is also possible to replace the region below center line C using multiple prism wedges
Prism wedge 14.
Furthermore it is also possible to for as shown in Figure 9 relative to the asymmetrical systems of center line C of collector lens group.In fig.9,
Make the drift angle of the prism wedge 92 above the center line C of collector lens group more than the drift angle of the prism wedge 14 of lower section so that on
The compression ratio of side is more than the compression ratio of lower section.
In addition, in the embodiment described above, the injection light optically focused for making prism wedge is used as using collector lens group
To the light focusing unit of fluorophor, but embodiments of the present invention are not limited to this.
As shown in Figure 10, collector lens group can also be replaced using parabolic mirror 115.Fluorophor is configured in parabolic
The focal position of face speculum 115.In addition, in Figure 10 light supply apparatus, by setting retroreflector 116 and via turning back
Speculum and by fluorophor configure in focal position so that light supply apparatus further minimizes.
In addition, in the above embodiment, using making translucency tabular rotary body that there is fluorophor, carried out through fluorophor
The scheme that sodium yellow after wavelength convert projects through tabular rotary body, but it is not limited to this.
For example, it is also possible to it is the projection display equipment for possessing light supply apparatus 1 as shown in figure 11.
In the projection display equipment shown in Figure 11, relay lens group 120, light color selection colour wheel 130, optical channel 140,
Illuminating lens group 150, optical modulation device 160, prism 171, prism 172, projection lens 180, projection screen 190 and first are implemented
The projection display equipment of mode is identical.
In fig. 11, light supply apparatus 1 possesses：Light source assembly 11；Light source assembly 12；Prism wedge 13；Prism wedge 14；It is poly-
Optical lens group 15；Reflect sodium yellow and pass through the dichroscope 911 of blue light；Reflect the speculum 912 of sodium yellow；Reflect yellow
The speculum 913 of light；Reflect sodium yellow and pass through the dichroscope 914 of blue light；Lens group 915；Lens group 916；Lens group
917；Tabular rotary body 918 with fluorophor.
The blue directional light projected from light source assembly 11 and light source assembly 12 is through prism wedge 13 and prism wedge 14
After compression, then through collector lens group 15, dichroscope 911, lens group 915 it is condensed to tabular rotary body 918.
On tabular rotary body 918, the sector notch for passing through blue light is provided with, corresponding to tabular rotary body
918 rotation, a part for blue light incide relay lens group after the shaping of lens group 917 through dichroscope 914
120。
In addition, there is fluorophor in the region in addition to sector notch of tabular rotary body 918, in present embodiment
In, tabular rotary body 918 for translucency but does not turn into reflecting plate.Therefore, the sodium yellow that fluorophor is sent is by tabular rotary body
Reflect and projected to the direction of lens group 915.Lens group 915 is configured in effectively converge the sodium yellow of diffusion and plate
The close proximity of shape rotary body 918.Sodium yellow through dichroscope 911 reflection after, then through lens group 916, speculum 912, reflection
Mirror 913 and dichroscope 914 and incide relay lens group 120.
As described above or make light reflective tabular rotary body that there is fluorophor and wavelength is made by tabular rotary body
The light supply apparatus 1 that sodium yellow after conversion reflects and projected.
Light supply apparatus shown in embodiment above is either in the Projection Display dress with reflection optical modulator part
Put or can be used in the projection display equipment with transmission-type light modulator part.
In addition, it goes without saying that the shape of the structure member of the light supply apparatus shown in the embodiment of the above, size, combination,
Configuration etc. can carry out appropriate change according to various conditions such as the structure of the projection display equipment of the application present invention and specifications.
Claims (13)
1. a kind of light supply apparatus, it is characterised in that possess：
Light-emitting element array, multiple blue laser light sources are configured with array-like；
Multiple collimation lenses, it is corresponding with each blue laser light source and set；
Prism wedge, receive from the collimation lens project directional light, make receiving parallel anaclasis and as compress after
Directional light and project；And
Light focusing unit, make the directional light optically focused of the prism wedge injection and be irradiated to fluorophor.
2. light supply apparatus according to claim 1, it is characterised in that
The light-emitting element array is across the center line balanced configuration of the light focusing unit, and the prism wedge is across the optically focused
The center line balanced configuration of unit.
3. light supply apparatus according to claim 1, it is characterised in that
The prism wedge is across the center line symmetrical arrangements of the light focusing unit, and the light-emitting element array is across described poly-
The center line symmetrical arrangements of light unit.
4. the light supply apparatus described in any one in claims 1 to 3, it is characterised in that
Projected from the collimation lens and incide the directional light of the prism wedge relative to the center line of the light focusing unit
The angle of formation is more than 20 degree and less than 48 degree.
5. the light supply apparatus described in any one in Claims 1-4, it is characterised in that
The drift angle of the prism wedge is more than 31 degree and less than 40 degree.
6. the light supply apparatus described in any one in claim 1 to 5, it is characterised in that
The directional light projected from the collimation lens incides the angle of the plane of incidence of the prism wedge compared with vertical at 5 degree
Within in the range of.
7. the light supply apparatus described in any one in claim 1 to 6, it is characterised in that
The prism wedge made by refraction parallel incident light as compression after directional light project when, emergent light relative to
The compression ratio of incident light is more than 30% and less than 70%.
8. the light supply apparatus described in any one in claim 1 to 7, it is characterised in that
The light focusing unit is collector lens group.
9. the light supply apparatus described in any one in claim 1 to 7, it is characterised in that
The light focusing unit is parabolic mirror.
10. the light supply apparatus described in any one in claim 1 to 9, it is characterised in that
The fluorophor is formed at translucency tabular rotary body.
11. the light supply apparatus described in any one in claim 1 to 9, it is characterised in that
The fluorophor is formed at light reflective tabular rotary body.
12. a kind of projection display equipment, it is characterised in that possess：Light source dress described in any one in claim 1 to 11
Put；Light color selecting unit；Reflection optical modulator part；And projection lens.
13. a kind of projection display equipment, it is characterised in that possess：Light source dress described in any one in claim 1 to 11
Put；Light color selecting unit；Transmission-type light modulator part；And projection lens.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-166141 | 2016-08-26 | ||
| JP2016166141A JP2018031995A (en) | 2016-08-26 | 2016-08-26 | Light source device and projection type display device |
Publications (2)
| Publication Number | Publication Date |
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| CN107436526A true CN107436526A (en) | 2017-12-05 |
| CN107436526B CN107436526B (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710060013.1A Active CN107436526B (en) | 2016-08-26 | 2017-01-24 | Light source device and projection display device |
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| Country | Link |
|---|---|
| JP (1) | JP2018031995A (en) |
| CN (1) | CN107436526B (en) |
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| CN111830771A (en) * | 2019-04-18 | 2020-10-27 | 青岛海信激光显示股份有限公司 | Laser projection light source and laser projection equipment thereof |
| CN112240533A (en) * | 2019-07-19 | 2021-01-19 | 深圳市绎立锐光科技开发有限公司 | Lighting device and automobile headlamp |
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| CN107436526B (en) | 2020-04-17 |
| JP2018031995A (en) | 2018-03-01 |
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