CN108255008A - A kind of multi-wavelength multiplex projecting apparatus RGB closes color device - Google Patents
A kind of multi-wavelength multiplex projecting apparatus RGB closes color device Download PDFInfo
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- CN108255008A CN108255008A CN201810069483.9A CN201810069483A CN108255008A CN 108255008 A CN108255008 A CN 108255008A CN 201810069483 A CN201810069483 A CN 201810069483A CN 108255008 A CN108255008 A CN 108255008A
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- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 26
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 26
- 230000000243 photosynthetic effect Effects 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 abstract description 10
- 230000029553 photosynthesis Effects 0.000 abstract description 4
- 238000010672 photosynthesis Methods 0.000 abstract description 4
- 239000004065 semiconductor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002194 synthesizing effect Effects 0.000 description 4
- 241001025261 Neoraja caerulea Species 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000009738 saturating Methods 0.000 description 1
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Classifications
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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
- G03B21/206—Control of light source other than position or intensity
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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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3152—Modulator illumination systems for shaping the light beam
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a kind of multi-wavelength multiplex projecting apparatus RGB to close color device, belongs to projector apparatus field, and including the prism being arranged between projection lens and dmd chip, prism side is equipped with G light color combiner, R light color combiner and B light color combiner;It closes color chips reflecting short light source and synthesizes a branch of light source after transmiting long wavelength optical light source in narrowband in each color combiner;The blue light of the green light of G light color combiner synthesis, the feux rouges of R light color combiner synthesis and the synthesis of B light color combiner closes that color chips synthesize beam of white light and optical axis perpendicular to projection lens is incident on prism by two.The light source of three color Single wavelengths has been extended to monochromatic multi wave length illuminating source, and a branch of compound monochromatic light of the monochromatic photosynthesis of multi-wavelength is realized into the output projected image brightness in the case of smaller change projecting apparatus size, substantially increasing projecting apparatus with the specific color chips that closes.
Description
Technical field
The present invention relates to projector apparatus field, specifically, being related to a kind of multi-wavelength multiplex projecting apparatus RGB closes color dress
It puts.
Background technology
Projecting apparatus is that the vision signal that outside provides is converted into the electric appliance for projecting image, the optical texture (light of projecting apparatus
Power traction is held up) mainly it is made of lighting part and imaging moiety.The major requirement that portable projector proposes is projecting apparatus volume
Small, projection brightness of image height, contrast are high.
In a manner that Single wavelength RGB (RGB) light source currently used in the market is as projector light source, if improving
Projector light is led to, and is necessarily required to the side that (1) uses the parallel connection of multiple monochromatic sources using larger sized LED, LD chip or (2)
Formula no matter using any of above two mode, can all increase the etendue of system, according to the constant original of etendue
Reason if wanting to keep the efficiency of lighting system constant, has the clear aperature of increase lighting system only.Due to portable translucent with for
Volume has higher requirement, should not be too large.The clear aperature of increase lighting system will necessarily increase the whole body of optical machine engine
Product.
Since semiconductor light source unit area light emission luminance is conditional, to increase the brightness of light source, it is necessary to increase light
The light-emitting area in source, and the increase of light-emitting area also leads to the corresponding increase of etendue.Due to optics display chip (DMD
Chip either LCOS, LCD chip) etendue be it is certain, even by increase semiconductor chip light-emitting surface
The brightness to increase light source is accumulated, since the increase of light-emitting area leads to the increase of light source optical propagation, practical lighting system
The energy that middle light source is sent out can not be fully utilized.
Invention content
The purpose of the present invention closes color device, the multi-wavelength multiplex skill of use to provide a kind of multi-wavelength multiplex projecting apparatus RGB
Art can keep semiconductor light source chips etendue not increased (being increased without light-emitting area), by more
The semiconductor light source of a different wave length closes the constant light source of etendue that color chips synthesizes a branch of high brightness by narrowband film,
Greatly improve the brightness of optical projection system.
To achieve these goals, multi-wavelength multiplex projecting apparatus RGB provided by the invention closes color device and includes being arranged on throwing
Prism between shadow camera lens and dmd chip, prism side are equipped with G light color combiner, R light color combiner and B light color combiner;G light color combiner
It is interior that there is the orthogonal shortwave green-light source in the direction of propagation and long wave green-light source, there is direction of propagation phase in R light color combiner
Mutually vertical short red wave light source and long-red-wave light source, B light color combiner is interior to have the orthogonal shortwave blue light in the direction of propagation
Light source and long wave blue light source;The collimation that shortwave light source and long wavelength optical light source are collimated into directional light respectively is equipped in each color combiner
Lens and color chips is closed along the narrowband that both sides directional light intersection point face is set, the narrowband in each color combiner closes color chips by short wavelength light source
With synthesizing a branch of light source after long wavelength's light source;The green light of G light color combiner synthesis, the feux rouges and the photosynthetic colors of B of the synthesis of R light color combiner
The blue light of device synthesis closes that color chips synthesize beam of white light and optical axis perpendicular to projection lens is incident on prism by two.
In above-mentioned technical proposal, the wavelength of one or more light sources in redgreenblue is extended to by single wavelength more
A difference centre wavelength but still the light source for belonging to same color region, such as feux rouges, conventional projector is usually using centre wavelength
For the light source of 610nm, centre wavelength can be extended in the technical program as multiple light in the range of 610nm~750nm
Source, and using narrowband close color chips multiple light sources are sent out it is photosynthetic for a branch of feux rouges, it is red after closing light when ignoring device loss
The luminous flux of light light beam is the summation of multiple red-light sources, since the etendue of the light beam after closing light is compared to single-wavelength light
The etendue of source outgoing beam does not increase namely realizes under the premise of lighting system clear aperature is not increased, and increases
The output light of big lighting system is led to, and being finally reached increases projecting apparatus output brightness of image.
Wherein, it is using coating process that narrowband, which closes color chips, is synthesized by plural layers, can be as needed by narrowband
It closes color chips and is designed to different transmitances, it is made to transmit long wavelength optical light source reflecting short light source or transmission shortwave light source reflection long wave
Light source, so as to which the orthogonal shortwave light source in the direction of propagation and long wavelength optical light source be made to synthesize a branch of light source.Herein, long wave and shortwave
The concept opposite for one refers to the relative value of the wavelength of light, and such as the light of same color, wavelength is respectively 610nm
And 650nm, one is that long wave one is shortwave;For the light of different colours, such as between feux rouges and green light, feux rouges is long wave,
Green light is shortwave.
It is same concept that above-mentioned conjunction color chips closes color chips with narrowband, can be designed into transmission long wavelength optical light source reflecting short light
Source or transmission shortwave light source reflection long wavelength optical light source, can thus synthesize the red, green, blue of the different directions of propagation a branch of white
Light.Specific scheme is for tool in each color combiner there are one transmitted light source and more than two directions of propagation perpendicular to transmitted light source side
To reflection source, the point of intersection of corresponding each reflection source and transmitted light source is equipped with narrowband and closes color chips.By increasing light
Source quantity further improves brightness.
More specific scheme is synthesized for the narrowband conjunction color chips reflecting short light source in each color combiner and after transmiting long wavelength optical light source
For a branch of light source;Transmitted light source is long wavelength optical light source, and reflection source is shortwave light source.It is designed to reflecting short simultaneously narrowband conjunction color chips
Long wave is transmitted, and designs a long wavelength optical light source and the multiple and vertically disposed shortwave light source of long wavelength optical light source, shortwave light source
Wavelength declines successively, and the structure that narrowband closes color chips also accordingly changes, and corresponding narrowband is selected to close color chips, it is one to be finally synthesizing
Light source beam.
Another more specific scheme is for narrowband conjunction color chips reflection long wavelength optical light source in each color combiner and after transmiting shortwave light source
Synthesize a branch of light source;Transmitted light source is shortwave light source, and reflection source is long wavelength optical light source.Narrowband conjunction color chips is designed to reflection length
Wave simultaneously transmits shortwave, and designs a shortwave light source and the multiple and vertically disposed long wavelength optical light source of shortwave light source, the long glistening light of waves
The wavelength in source rises successively, and the structure that narrowband closes color chips also accordingly changes, and suitable narrowband is selected to close color chips, is finally synthesizing
For a branch of light source.
Another specific scheme is mutually perpendicular to simultaneously for the feux rouges of R light color combiner synthesis with the green light that G light color combiner synthesizes
Color chips being closed by first in point of intersection and synthesizing a branch of orange light, orange light is mutually perpendicular to and with the blue light that B light color combiner synthesizes in intersection point
Place closes color chips by second and synthesizes beam of white light, and white light is incident on prism perpendicular to the optical axis of projection lens.
Color chips is closed from the compound green light that G light color combiner comes out by first to close with the compound feux rouges come out from R light color combiner
Into a branch of orange light, the compound orange light after synthesis is synthesized a branch of by the second conjunction color chips with the composite blue light come out from B light color combiner
White light.This beam recombined white light is compared to luminous flux of the conventional projector with identical clear aperture, bigger.
More specific scheme is incident on prism for the green light of G light color combiner synthesis perpendicular to the optical axis of projection lens, and R is photosynthetic
The feux rouges of color device synthesis and the blue light of B light color combiner synthesis are each perpendicular to the light path of feux rouges.
Another specific scheme is equipped with fly's-eye lens for white light in the light path for be incident on prism.Light beam is made to become more
Uniformly.
More specific scheme includes two of front and rear setting for fly's-eye lens.
Another specific scheme is equipped with field lens for white light in the light path for be incident on prism.
More specific scheme includes two of front and rear setting for field lens.
Compared with prior art, beneficial effects of the present invention are:
The multi-wavelength multiplex projecting apparatus RGB of the present invention closes color device by the photosynthetic color chips of R by the feux rouges of multiple and different wavelength
The a branch of feux rouges of photosynthesis that semiconductor light source is sent out, different wave length feux rouges are synthetically produced the compound feux rouges of an effective wavelength, lead to
The a branch of green light of photosynthesis that the photosynthetic color chips of G sends out the Green-emitting semiconductor light source of multiple and different wavelength is crossed, different wave length green light closes
Into the compound green light for generating an effective wavelength, the blue semiconductor light of multiple and different wavelength is sent out by the photosynthetic color chips of B
The a branch of blue light of photosynthesis, different wave length blue light is synthetically produced the composite blue light of an effective wavelength.Display image is pressed into RGB tri-
Color color separation control rgb light source.The recombined white light of synthesis leads to compared to the light that conventional projector has identical clear aperture, bigger
Amount.
Description of the drawings
Fig. 1 is the fundamental diagram for the single color combiner that the embodiment of the present invention includes two light sources;
Fig. 2 is the fundamental diagram for the single color combiner that the embodiment of the present invention includes multiple light sources;
Fig. 3 is the overall structure diagram of the embodiment of the present invention;
Fig. 4 is that the narrowband of the embodiment of the present invention closes color chips and light source light spectrum wavelength comparison diagram;
Fig. 5 is that the narrowband of the embodiment of the present invention closes color chips spectral wavelength transmittance curve figure;
Fig. 6 is that the narrowband of the embodiment of the present invention closes color chips spectral wavelength transmittance curve schematic diagram.
Wherein:A, G light color combiner;B, R light color combiner;C, B light color combiner;1st, projection lens;2nd, prism;3rd, dmd chip;
4th, field lens one;5th, fly's-eye lens;6th, second color chips is closed;7th, shortwave green-light source;8th, collimation lens;9th, green light narrowband closes color chips;
10th, first color chips is closed;11st, blue light narrowband closes color chips;12nd, feux rouges narrowband closes color chips;13rd, long wave green-light source;14th, short red wave
Light source;15th, long-red-wave light source;16th, long wave blue light source;17th, shortwave blue light source;18th, field lens two.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, with reference to embodiments and its attached drawing is to this hair
It is bright to be described further.
Embodiment
Referring to Fig. 1 to Fig. 4, the multi-wavelength multiplex projecting apparatus RGB of the present embodiment closes color device and includes being arranged on projection lens 1
Prism 2 between dmd chip 3,2 side of prism are equipped with G light color combiner A, R light color combiner B and B light color combiner C.
There is the orthogonal shortwave green-light source 7 in the direction of propagation and long wave green-light source 13, short in G light color combiner A
The collimation lens that light beam is transformed into directional light is equipped in the direction of beam propagation of wave green-light source 7 and long wave green-light source 13
8, at the face that is formed of intersection point of shortwave green-light source 7 and the directional light of long wave green-light source 13 being equipped with green light narrowband closes color chips
9, green light narrowband closes the 9 energy long green light long wavelength green light of reflecting short of color chips, synthesizes a branch of compound green light.
There is the orthogonal short red wave light source 14 in the direction of propagation and long-red-wave light source 15, short in R light color combiner B
Be equipped in the direction of beam propagation of wave red-light source 14 and long-red-wave light source 15 light beam is transformed into directional light collimation it is saturating
Mirror 8, at the face that is formed of intersection point of short red wave light source 14 and the directional light of long-red-wave light source 15 being equipped with feux rouges narrowband closes
Color chips 12, feux rouges narrowband close the 12 long feux rouges of energy reflecting short of color chips through long wavelength's feux rouges, synthesize a branch of compound feux rouges.
There is the orthogonal shortwave blue light source 17 in the direction of propagation and long wave blue light source 16, short in B light color combiner C
Blue light narrowband is equipped at the face that the intersection point of the directional light of wave blue light source 17 and long wave blue light source 16 is formed and closes color chips 11,
Shortwave blue light source 17 and the 16 long blue light of energy reflecting short of long wave blue light source synthesize a branch of compound indigo plant through long wavelength's blue light
Light.
The blue light of the green light of G light color combiner A synthesis, the feux rouges of R light color combiner B synthesis and B light color combiner C synthesis passes through two
A conjunction color chips synthesizes a branch of recombined white light and the optical axis perpendicular to projection lens is incident on prism 2.
In the present embodiment, the green light of G light color combiner A synthesis is incident on prism 2 perpendicular to the optical axis of projection lens, and R is photosynthetic
The feux rouges of color device B synthesis and the blue light of B light color combiner C synthesis are each perpendicular to the light path of green light, and same in green light light path
Side.Wherein, the feux rouges of R light color combiner B synthesis is closed with the green light that G light color combiner A is synthesized in point of intersection by the first conjunction color chips 10
Into a branch of orange light, orange light closes color chips 6 by second in point of intersection with the blue light that B light color combiner C is synthesized and synthesizes beam of white light, compound
White light is perpendicular to being incident on prism 2.
Synthesized beam of white light is mixed by three coloured light by the light that three kinds of color combiner are sent out, three kinds of photosynthetic colors of color
Device space arrangement position is not limited to the position in the present embodiment, and spatial position scheme provided in this embodiment is only a kind of feasible
Reference example.This beam recombined white light is compared to luminous flux of the conventional projector with identical clear aperture, bigger.
In addition, being set successively in the white light light path of the present embodiment, there are two fly's-eye lens 5, field lens 1 and field lens 2 18, white lights
Become equal white light, then dmd chip 3 into 2 corner angle, is reached by field lens 1 and field lens 2 18 respectively by fly's-eye lens 5
On, vision signal is converted to projection image signal and is projected to outside projecting apparatus by projection lens 1 by dmd chip 3.It projects
Brightness of image than the brightness of image bigger of conventional projector, and do not change projecting apparatus light path module size and radiating module substantially
Size.
One brightness is 100 lumens, and wavelength 435nm, light-emitting area is 2 millimeters × 2.6 millimeters of shortwave blue-ray LED light
Source and a brightness are 120 lumens, and wavelength 455nm, light-emitting area is also 2 millimeters × 2.6 millimeters of long wave blue-ray LED light
Source closes color chips by narrowband and synthesizes a road blue light, closes the light after beam and leads to for 200 lumens, etendue and single LED core
Piece is the same.
One brightness is 1000 lumens, and wavelength 535nm, light-emitting area is 2 millimeters × 2.6 millimeters of shortwave green light LED
Light source and a brightness are 1200 lumens, and wavelength 560nm, light-emitting area is also 2 millimeters × 2.6 millimeters of long wave green light LED
Light source closes color chips by narrowband and synthesizes a road green light, closes the light after beam and lead to for 2000 lumens, etendue with it is single
LED chip is the same.
One brightness is 360 lumens, and wavelength 635nm, light-emitting area is 2 millimeters × 2.6 millimeters of short red wave LED light
Source and a brightness are 300 lumens, and wavelength 655nm, light-emitting area is also 2 millimeters × 2.6 millimeters of long-red-wave LED light
Source closes color chips by narrowband and synthesizes a road feux rouges, closes the light after beam and leads to for 600 lumens, etendue and single LED core
Piece is the same.
Color technology is closed by using narrowband to be combined into two blue-ray LEDs, two green light LEDs and two red-light LEDs
The rgb light source of effect is reapplied in conventional projection display system, can obtain nearly 2 times of brightness output.Not using more
Brightness before wavelength narrow band conjunction beam is 1680 lumens, and uses narrowband that can obtain 2800 lumens after closing beam technology.And due to closing
The etendue of light source does not increase during beam, can be projected system utilization, greatly improve output brightness.
In the present embodiment, green light narrowband closes color chips 9, feux rouges narrowband closes color chips 12, blue light narrowband closes color chips 11 and second
The structure that color chips 6 is designed to transmission long wave reflecting short is closed, wavelength transmitance is referring to Fig. 5;First conjunction color chips 10 is designed to
The structure of shortwave reflection long wave is transmitted, wavelength transmitance is referring to Fig. 6.Certainly, specific structure is also needed according to specific wavelength
It is designed, this is the prior art, is not repeated herein.It, also can be by each color combiner other than the set-up mode of the present embodiment
Position is converted, corresponding to change the structure for closing color chips;And the light source setting in each color combiner also can be changed, and change accordingly
Become the transmissivity for closing color chips.
Claims (10)
1. a kind of multi-wavelength multiplex projecting apparatus RGB closes color device, including the prism being arranged between projection lens and dmd chip,
It is characterized in that:
The prism side is equipped with G light color combiner, R light color combiner and B light color combiner;
It is photosynthetic with the orthogonal shortwave green-light source in the direction of propagation and long wave green-light source, the R in the G light color combiner
In color device there is the orthogonal short red wave light source in the direction of propagation and long-red-wave light source, have in the B light color combiner and pass
Broadcast the orthogonal shortwave blue light source in direction and long wave blue light source;
It is equipped in each color combiner and shortwave light source and long wavelength optical light source is collimated into the collimation lens of directional light and along both sides respectively
The narrowband of directional light intersection point face setting closes color chips, and the narrowband in each color combiner closes color chips by short wavelength light source and longer wavelength light source
Synthesize a branch of light source;
The blue light of the green light of the G light color combiner synthesis, the feux rouges of R light color combiner synthesis and B light color combiner synthesis
Close that color chips synthesize beam of white light and optical axis perpendicular to the projection lens is incident on the prism by two.
2. multi-wavelength multiplex projecting apparatus RGB according to claim 1 closes color device, it is characterised in that:
In each color combiner tool there are one transmitted light source and more than two directions of propagation perpendicular to the reflected light in transmitted light source direction
The point of intersection of source, corresponding each reflection source and transmitted light source is equipped with narrowband and closes color chips.
3. multi-wavelength multiplex projecting apparatus RGB according to claim 2 closes color device, it is characterised in that:
The narrowband closes color chips reflecting short light source and synthesizes a branch of light source after transmiting long wavelength optical light source in each color combiner;
The transmitted light source is long wavelength optical light source, and the reflection source is shortwave light source.
4. multi-wavelength multiplex projecting apparatus RGB according to claim 2 closes color device, it is characterised in that:
The narrowband closes color chips reflection long wavelength optical light source and synthesizes a branch of light source after transmiting shortwave light source in each color combiner;It is described
Transmitted light source for shortwave light source, the reflection source is long wavelength optical light source.
5. multi-wavelength multiplex projecting apparatus RGB according to claim 1 closes color device, it is characterised in that:
The feux rouges of the R light color combiner synthesis is mutually perpendicular to the green light that the G light color combiner synthesizes and leads in point of intersection
It crosses the first conjunction color chips and synthesizes a branch of orange light, the orange light is mutually perpendicular to and with the blue light that the B light color combiner synthesizes in intersection point
Place closes color chips by second and synthesizes beam of white light, and the white light is incident on the prism perpendicular to the optical axis of the projection lens.
6. multi-wavelength multiplex projecting apparatus RGB according to claim 5 closes color device, it is characterised in that:
The green light of the G light color combiner synthesis is incident on the prism, the R perpendicular to the optical axis of the projection lens
The feux rouges of light color combiner synthesis and the blue light of B light color combiner synthesis are each perpendicular to the light path of the green light.
7. multi-wavelength multiplex projecting apparatus RGB according to claim 1 closes color device, it is characterised in that:
The white light is equipped with fly's-eye lens on the light path of the prism is incident on.
8. multi-wavelength multiplex projecting apparatus RGB according to claim 7 closes color device, it is characterised in that:
The fly's-eye lens includes two of front and rear setting.
9. multi-wavelength multiplex projecting apparatus RGB according to claim 1 closes color device, it is characterised in that:
The white light is equipped with field lens on the light path of the prism is incident on.
10. multi-wavelength multiplex projecting apparatus RGB according to claim 9 closes color device, it is characterised in that:
The field lens includes two of front and rear setting.
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| CN201810069483.9A CN108255008A (en) | 2018-01-24 | 2018-01-24 | A kind of multi-wavelength multiplex projecting apparatus RGB closes color device |
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| CN201810069483.9A CN108255008A (en) | 2018-01-24 | 2018-01-24 | A kind of multi-wavelength multiplex projecting apparatus RGB closes color device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458891A (en) * | 2020-05-07 | 2020-07-28 | 青岛海泰新光科技股份有限公司 | Combined method for realizing multi-channel color combination light source |
| CN112305845A (en) * | 2020-11-13 | 2021-02-02 | 歌尔光学科技有限公司 | Projection light path and projection equipment |
| WO2021258673A1 (en) * | 2020-06-24 | 2021-12-30 | 成都极米科技股份有限公司 | Mixed light source system and projection display device |
| CN114077139A (en) * | 2020-08-21 | 2022-02-22 | 成都极米科技股份有限公司 | Three-color light source equipment and projection display equipment |
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| CN114077139A (en) * | 2020-08-21 | 2022-02-22 | 成都极米科技股份有限公司 | Three-color light source equipment and projection display equipment |
| CN112305845A (en) * | 2020-11-13 | 2021-02-02 | 歌尔光学科技有限公司 | Projection light path and projection equipment |
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Application publication date: 20180706 |