CN105629486A - 3d projection display system - Google Patents
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- CN105629486A CN105629486A CN201410589403.4A CN201410589403A CN105629486A CN 105629486 A CN105629486 A CN 105629486A CN 201410589403 A CN201410589403 A CN 201410589403A CN 105629486 A CN105629486 A CN 105629486A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/60—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images involving reflecting prisms and mirrors only
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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
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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
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
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Abstract
本发明公开了一种3D投影显示系统。该系统包括：光源，用于输出时序光，时序光包括第一时序光和第二时序光，其中，第一时序光包括第二颜色光和第一波段的第一颜色光，第二时序光包括第三颜色光和第二波段的第一颜色光；分光合光装置，设置在时序光的传输光路中，用于将时序光分成沿第一光通道传输的第一光、沿第二光通道传输的第二光和沿第三光通道传输的第三光，还用于根据第一光、第二光和第三光生成第一组三基色光和第二组三基色光，其中，第一组三基色光和第二组三基色光为不同眼睛所接收的两组基色光；以及光调制器，用于对第一组三基色光和第二组三基色光进行调制。通过本发明，达到了使得人体左右眼接收的光的色域接近的效果。
The invention discloses a 3D projection display system. The system includes: a light source for outputting sequential light, the sequential light includes a first sequential light and a second sequential light, wherein the first sequential light includes a second color light and a first color light of a first wavelength band, and the second sequential light Including the third color light and the first color light of the second wavelength band; the light splitting and combining device is arranged in the transmission light path of the sequential light, and is used to divide the sequential light into the first light transmitted along the first light channel, and the second light transmitted along the second light channel. The second light transmitted by the channel and the third light transmitted along the third light channel are also used to generate the first group of tri-primary light and the second group of tri-primary light according to the first light, the second light and the third light, wherein, The first group of three primary color lights and the second group of three primary color lights are two groups of primary color lights received by different eyes; and the light modulator is used for modulating the first group of three primary color lights and the second group of three primary color lights. Through the present invention, the effect of making the color gamuts of the light received by the left and right eyes of the human body close to each other is achieved.
Description
Technical field
The present invention relates to 3D projection art, in particular to a kind of 3D projection display system.
Background technology
At present, 3D Display Technique has been widely used for the place such as cinema, home theater, and the high fidelity of display content can be reduced by 3D Display Technique, and its ultimate principle is the image that right and left eyes reception independently is different, through the superposition of brain, form stereo display effect. During current 3D shows, spectral unmixing technology becomes a kind of important technological means, the ultimate principle of spectral unmixing technology is: the internal RGB color separation colour wheel placing high-speed rotation of scialyscope, different rgb color configurations is provided for right and left eyes, by RGB color separation glasses, right and left eyes is allowed to see different pictures, thus forming stereoeffect. Wherein, RGB represents three primary colours: red (Red), green (Green) and blue (Blue).
Existing aberration formula 3D is the one of spectral unmixing technology, and its goggles with color filter adopts red blue optical filter, and namely left eye receives red image, and right eye receives blue image, and vice versa. This technical pattern is simple, and cost is low, but 3D effect is poor. Present stage, the 3D technology of a kind of 3D Display Technique-6P (six-basic-color) LASER Light Source grows up gradually, its light source is two groups of red, green, blue semiconductor lasers that wave band staggers, by the optical filter that right and left eyes on glasses is different, right and left eyes respectively receives one group of red, green, blue three primary colours light, shows thus forming 3D. Which adopts pure laser as light source, has color good, the advantage that colour gamut is wide, but it is relatively costly, and dissipation speckle technical difficulty is big, simultaneously because right and left eyes colour gamut is different, needs to carry out colour correction in practical application, thus reducing color saturation and light efficiency.
The scheme of existing 6P LASER Light Source 3D Display Technique as it is shown in figure 1,101 is 6P light source, its spectral distribution as in figure 2 it is shown, in Fig. 2 solid line be left eye LASER Light Source spectrum, dotted line is right eye LASER Light Source spectrum. In left eye sequential, 6P light source 101 sends left eye three primary colours light, comprise a R left side, G is left, B is left, after colour esensitized equipment 102, R parts on the left side and is fitted on DMD (DigitalMicromirrorDevice, referred to as DMD) 103, G parts on the left side and is fitted on DMD104, B and parts on the left side and be fitted on DMD105, after closing light by conjunction color device 106, left-eye image is become to arrive glasses 108 place after camera lens 107, glasses about 108 eyeglass is coated with the optical filter of the curve that filters as shown in Figure 3, in Fig. 3, red curve is glasses left eye optical filters, and green curve is glasses right eye optical filters. Thus left eye receives left-eye image, and right eye is without image; In like manner, in right eye sequential, 6P light source 101 sends right eye three primary colours light, comprise the R right side, G is right, B is right, after colour esensitized equipment 102, R parts on the right side and is fitted on DMD103, G and parts on the right side and be fitted on DMD104, B and part on the right side and be fitted on DMD105, after closing light by conjunction color device 106, eye image is become to arrive glasses 108 place after camera lens 107, right eye receives eye image, and left eye is without image, three DMD processing the sequential of primary lights as shown in Figure 4, right and left eyes sequential chart picture forms stereo display effect by the superposition of human eye.
In the diagram, each DMD processing a kind of primary lights of right and left eyes, left eye sequential and right eye sequential are sequentially carried out, and form right and left eyes image alternately, and human eye superposition forms 3D rendering.
Above-mentioned 6P LASER Light Source 3D Display Technique, by selecting two groups of red, green, blue laser instrument, coordinates glasses right and left eyes optical filter, obtains right and left eyes image successively, forms stereo display by the superposition of human eye. The program has the advantage that colour gamut is wide, but it is relatively costly, and green laser is difficult to obtain, and dissipation speckle technical difficulty is big, and the colour gamut difference of the light that right and left eyes receives is bigger. As it is shown in figure 5, owing to the colour gamut of right and left eyes is distinguished relatively big, need in actual applications to carry out colour correction, thus reducing color saturation and light efficiency.
For the problem that the colour gamut difference of the light of right and left eyes reception in prior art is bigger, effective solution is not yet proposed at present.
Summary of the invention
Present invention is primarily targeted at a kind of 3D projection display system of offer, the problem that colour gamut difference to solve the light that right and left eyes receives in prior art is bigger.
To achieve these goals, according to an aspect of the invention, it is provided a kind of 3D projection display system. 3D projection display system according to the present invention includes: light source, for output timing light, described sequential light includes the first sequential light and the second sequential light, wherein, described first sequential light includes the first color of light of the second color of light and first band, described second sequential light includes the first color of light of the 3rd color of light and second band, wherein, described first color of light, described second color of light and described 3rd color of light respectively different colours primary lights, described second color of light includes wave band continuous print the 3rd band of light, 4th band of light and the 5th band of light, described 3rd color of light includes wave band continuous print the 6th band of light, 7th band of light and the 8th band of light, light splitting Multiplexing apparatus, it is arranged in the transmission light path of described sequential light, for described sequential light is divided into the first light along the first optical channel transmission, the second light along the second optical channel transmission and the 3rd light along the 3rd optical channel transmission, wherein, described second color of light includes wave band continuous print the 3rd band of light, 4th band of light and the 5th band of light, described 3rd color of light includes wave band continuous print the 6th band of light, 7th band of light and the 8th band of light, described first light includes the first color of light of described first band and the first color of light of described second band, described second light includes described 4th band of light and described 7th band of light, described 3rd light includes described 3rd band of light, described 5th band of light, described 6th band of light and described 8th band of light, described light splitting Multiplexing apparatus is additionally operable to according to described first light, described second light and described first group of three primary colours light of 3rd photogenerated and second group of three primary colours light, wherein, described first group of three primary colours light and described second group of three primary colours light are two groups of primary lights that different eyes receive, described first group of three primary colours light includes the first color of light of described first band, 4th band of light and the 7th band of light, described second group of three primary colours light includes the first color of light of described second band, described 3rd band of light, described 5th band of light, described 6th band of light and described 8th band of light, and photomodulator, for described first group of three primary colours light and second group of three primary colours light are modulated, and by the luminous reflectance after modulation to described light splitting Multiplexing apparatus, close output after light through described light splitting Multiplexing apparatus.
Further, described light splitting Multiplexing apparatus is provided with color-separation and color-recombination film, described color-separation and color-recombination film includes reflectance coating and dual band pass filter coating, described reflectance coating is for reflecting the first color of light of described first band and the first color of light of described second band, described dual band pass filter coating is used for reflecting described 4th band of light and described 7th band of light, and the 3rd band of light described in transmission, described 5th band of light, described 6th band of light and described 8th band of light, wherein, described sequential light generates described first group of three primary colours light and described second group of three primary colours light by described reflectance coating and described dual band pass filter coating.
Further, the wavelength of described 4th band of light is less than the wavelength of the 5th band of light, and more than the wavelength of the 3rd band of light; The wavelength of described 7th band of light is less than the wavelength of the 8th band of light, and more than the wavelength of the 6th band of light.
Further, described light splitting Multiplexing apparatus includes: the first prism, the second prism and prism, described first prism, described second prism and described prism be order arrangement successively, described sequential light passes sequentially through described first prism, described second prism and described prism, wherein, it is provided with described reflectance coating between described first prism and described second prism, between described second prism and described prism, is provided with described dual band pass filter coating.
Further, described photomodulator includes: the first DMD, second DMD and the 3rd DMD, wherein, described first DMD is arranged on described reflectance coating and reflects on the direction of the first color of light of described first band and the first color of light of described second band, for the first color of light of described first band and the first color of light of described second band are modulated, described second DMD is arranged on described dual band pass filter coating and reflects on the direction of described 4th band of light and described 7th band of light, for described 4th band of light and described 7th band of light are modulated, described 3rd DMD is arranged on described 3rd band of light, described 5th band of light, in the exit direction of described 6th band of light and described 8th band of light, for to described 3rd band of light, described 5th band of light, described 6th band of light and described 8th band of light are modulated.
Further, described reflectance coating is additionally operable to reflect a part of wave band of described 3rd band of light, another part wave band of the 3rd band of light described in described dual band pass filter coating transmission; Or, described reflectance coating is additionally operable to reflect a part of wave band of described 8th band of light, another part wave band of the 8th band of light described in described dual band pass filter coating transmission.
Further, described light source includes: LASER Light Source, for launching the first color of light of described first band and the first color of light of described second band; Colour wheel, it is arranged on the launch party of the first color of light of described first band and the first color of light of described second band upwards, described colour wheel is provided with fluorescent material, described fluorescent material includes the second color fluorescence powder and the 3rd color fluorescence powder, wherein, described second color fluorescence powder is for described second color of light of generation under the exciting of the first color of light of described first band, and described 3rd color fluorescence powder is for described 3rd color of light of generation under the exciting of the first color of light of described second band; First color of light of first band described in described second color fluorescence powder transmissive portion, the first color of light of second band described in described 3rd color fluorescence powder transmissive portion.
Further, described light source includes: the first LASER Light Source, for launching the first color of light of described first band; Second LASER Light Source, for launching the first color of light of described first band and the first color of light of described second band; First colour wheel, it is arranged on the light emission direction of described first LASER Light Source, described first colour wheel is provided with the second color fluorescence powder and the 3rd color fluorescence powder, and described first colour wheel is for described second color of light of generation and described 3rd color of light under the exciting of the first color of light of described first band; Second colour wheel, it is arranged on the light emission direction of described second LASER Light Source, described second colour wheel is provided with scattering powder, described second colour wheel is for being scattered depolarization to the first color of light of described first band and the first color of light of described second band, wherein, the first color of light that described second LASER Light Source launches described first band is identical with the switching frequency of the switching frequency of the first color of light of described second band second color fluorescence powder described with on described first colour wheel and described 3rd color fluorescence powder.
Further, described first LASER Light Source and described second LASER Light Source all adopt semiconductor laser.
Further, described light source includes: LASER Light Source, for launching the first color of light of described first band and the first color of light of described second band; LED light source, for launching the second color of light comprising described 3rd wave band, the 4th wave band and the 5th wave band, described LED light source is additionally operable to launch the 3rd color of light comprising described 6th wave band, the 7th wave band and the 8th wave band.
Further, described 3D projection display system also includes: the first condenser lens, is arranged between described first LASER Light Source and described first colour wheel, for the first color of light that described first LASER Light Source is launched is focused on described first colour wheel; Second condenser lens, is arranged between described second LASER Light Source and described second colour wheel, for the first color of light that described second LASER Light Source is launched is focused on described second colour wheel.
Further, described 3D projection display system also includes: the first collecting lens, is arranged on the light output direction of described first colour wheel; Second collecting lens, is arranged on the light output direction of described second colour wheel; First reflecting mirror, for reflecting the first color of light of the first band that described second collecting lens is collected; Multiplexing apparatus, described Multiplexing apparatus is for reflecting the first color of light of described first band and the first color of light of described second band, and the second color of light described in transmission and described 3rd color of light, obtains mixed light.
Further, described 3D projection display system also includes: square rod, is arranged on the launch party of described mixed light upwards, for described mixed light is carried out dodging; Relay lens, is arranged on the light output direction of described square rod; Second reflecting mirror, is arranged on the light output direction of described relay lens, for reflecting the light of described relay lens output; Total reflection prism, for by the light total reflection of described second reflecting mirror reflection to the prism being coated with described color-separation and color-recombination film.
Further, described 3D projection display system also includes: projection lens, is used for receiving described photomodulator and controls to export described first group of three primary colours light and described second group of three primary colours light; And glasses, described glasses include left eyeglass lens and right eye eyeglass, and wherein, described left eyeglass lens is first group of three primary colours light described in transmission, and described right eye eyeglass is second group of three primary colours light described in transmission.
Further, described first color of light is blue light, and described second color of light is green glow, and described 3rd color of light is HONGGUANG; Or, described first color of light is green glow, and described second color of light is HONGGUANG, and described 3rd color of light is blue light; Or, described first color of light is HONGGUANG, and described second color of light is blue light, and described 3rd color of light is green glow.
Further, described sequential light first passes through after described reflectance coating carries out reflection beam splitting, and the light of described reflectance coating transmission carries out light splitting then through described dual band pass filter coating.
According to embodiments of the present invention, in light splitting Multiplexing apparatus, sequential light generates first group of three primary colours light and second group of three primary colours light by reflectance coating and dual band pass filter coating, wherein, first group of three primary colours light and second group of three primary colours light are two groups of primary lights that different eyes accept, first group of three primary colours light includes the first color of light of first band, the 4th band of light and the 7th band of light, and second group of three primary colours light includes the first color of light of second band, the 3rd band of light, the 5th band of light, the 6th band of light and the 8th band of light. So that the colour gamut of first group of three primary colours light and second group of three primary colours light is relatively, solve the problem that the colour gamut difference of the light that right and left eyes in prior art receives is bigger, the effect that the colour gamut of the light having reached human body right and left eyes is received is close.
Accompanying drawing explanation
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the structural representation of the 3D projection display system according to prior art;
Fig. 2 is the spectral distribution curve schematic diagram of the 3D projection display system according to prior art;
Fig. 3 is the optical filtering curve synoptic diagram of the 3D projection display system according to prior art;
Fig. 4 is the sequential chart of the primary lights of the 3D projection display system according to prior art;
Fig. 5 is the spectral distribution schematic diagram of the 3D projection display system according to prior art;
Fig. 6 is the structural representation of 3D projection display system according to a first embodiment of the present invention;
Fig. 7 a to Fig. 7 c is the spectrum schematic diagram of sequential light according to embodiments of the present invention;
Fig. 8 is the structural representation of prism according to embodiments of the present invention and DMD;
Fig. 9 is the structural representation of preferred 3D projection display system according to a second embodiment of the present invention;
Figure 10 shows the colour wheel schematic diagram of the 3D projection display system shown in Fig. 9;
Figure 11 shows the light sequential chart of the colour wheel output of the 3D projection display system shown in Fig. 9;
Figure 12 shows the reflectance curves of the color-separation and color-recombination film of the 3D projection display system shown in Fig. 9;
Figure 13 shows the right and left eyes sequential chart of the 3D projection display system shown in Fig. 9;
Figure 14 shows the DMD of the 3D projection display system shown in Fig. 9 and processes sequential chart;
Figure 15 shows the spectral distribution schematic diagram of the 3D projection display system shown in Fig. 9;
Figure 16 is the structural representation of 3D projection display system according to a third embodiment of the present invention;
Figure 17 shows the colour wheel schematic diagram of the 3D projection display system shown in Figure 16;
Figure 18 shows the light sequential chart of the colour wheel output of the 3D projection display system shown in Figure 16;
Figure 19 is the reflectance curves of a kind of preferred color-separation and color-recombination film according to embodiments of the present invention;
Figure 20 is the spectrogram after the color-separation and color-recombination film light splitting of 3D projection display system according to embodiments of the present invention;
Figure 21 is the right and left eyes sequential chart of 3D projection display system according to embodiments of the present invention;
The DMD that Figure 22 is 3D projection display system according to embodiments of the present invention processes sequential chart; And
Figure 23 is the spectral distribution schematic diagram of 3D projection display system according to embodiments of the present invention.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined. Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a present invention part, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of protection of the invention.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, without being used for describing specific order or precedence. Should be appreciated that the data of so use can be exchanged in the appropriate case, in order to embodiments of the invention described herein. In addition, term " includes " and " having " and their any deformation, it is intended to cover non-exclusive comprising, such as, contain those components and parts that the system of a series of components and parts, product or equipment are not necessarily limited to clearly list, but can include clearly not listing or for intrinsic other components and parts of these systems, product or equipment.
Fig. 6 is the structural representation of 3D projection display system according to a first embodiment of the present invention. As shown in Figure 6, this 3D projection display system includes: light source 601, light splitting Multiplexing apparatus 602 and photomodulator 603.
Light source 601 is for output timing light, this sequential light includes the first sequential light and the second sequential light, wherein, first sequential light includes the first color of light of the second color of light and first band, second sequential light includes the first color of light of the 3rd color of light and second band, wherein, first color of light, the second color of light and the 3rd color of light respectively different colours primary lights, second color of light includes wave band continuous print the 3rd band of light, the 4th band of light and the 5th band of light, and the 3rd color of light includes wave band continuous print the 6th band of light, the 7th band of light and the 8th band of light.
Light source 601 can be LED light source can also LASER Light Source, light source 601 exports the first sequential light and the second sequential light in the different moment. First band and second band are different wave bands, first color of light, the second color of light and the 3rd color of light respectively different colours primary lights, can be followed successively by blue light, green glow and HONGGUANG, it is also possible to be green glow, HONGGUANG and blue light, it is also possible to be HONGGUANG, blue light and green glow.
Light splitting Multiplexing apparatus 602 is arranged in the transmission light path of sequential light, for sequential light being divided into the first light along the first optical channel transmission, the second light along the second optical channel transmission and the 3rd light along the 3rd optical channel transmission, wherein, second color of light includes wave band continuous print the 3rd band of light, 4th band of light and the 5th band of light, 3rd color of light includes wave band continuous print the 6th band of light, 7th band of light and the 8th band of light, first light includes the first color of light of first band and the first color of light of second band, second light includes the 4th band of light and the 7th band of light, 3rd light includes the 3rd band of light, 5th band of light, 6th band of light and the 8th band of light, light splitting Multiplexing apparatus is additionally operable to according to the first light, second light and first group of three primary colours light of the 3rd photogenerated and second group of three primary colours light, wherein, first group of three primary colours light and second group of three primary colours light are two groups of primary lights that different eyes receive, first group of three primary colours light includes the first color of light of first band, 4th band of light and the 7th band of light, second group of three primary colours light includes the first color of light of second band, 3rd band of light, 5th band of light, 6th band of light and the 8th band of light.
As shown in Fig. 7 a to 7c, in the coordinate system shown in Fig. 7 a to 7c, vertical coordinate represents light intensity, and abscissa represents wavelength. As shown in Figure 7a, first sequential light includes the first color of light of the second color of light and first band, and the second sequential light includes the first color of light of the 3rd color of light and second band, wherein, first color of light is blue, including the blue light B2 of the blue light B1 of first band and second band; Second color of light is green glow, including the 3rd band of light G2, the 4th band of light G1 and the five band of light G3; 3rd color of light is HONGGUANG, including the 6th band of light R2, the 7th band of light R1 and the eight band of light R3.
In Fig. 7 b and Fig. 7 c, solid line represents the first sequential light, and dotted line represents the second sequential light. As shown in Figure 7b, the first color of light is HONGGUANG, and including the HONGGUANG R2 of the HONGGUANG R1 of first band and second band, the second color of light is blue light B, and the 3rd color of light is green glow G. As shown in Figure 7 c, the first color of light is green glow, and including the green glow G2 of the green glow G1 of first band and second band, the second color of light is HONGGUANG R, and the 3rd color of light is blue light B.
Second color of light includes wave band continuous print the 3rd band of light, 4th band of light and the 5th band of light, wherein, 3rd band of light has the 3rd wave band, 4th band of light has the 4th wave band, 5th band of light has the 5th wave band, 3rd wave band, 4th wave band and the 5th wave band can be continuous wave bands, such as, the maximum wavelength of the 3rd wave band and the minimum wavelength of the 4th wave band are equal, the maximum wavelength of the 4th wave band and the minimum wavelength of the 5th wave band are equal, or the minimum wavelength of the maximum wavelength of the 5th wave band and the 4th wave band is equal, the maximum wavelength of the 4th wave band and the minimum wavelength of the 3rd wave band are equal. 3rd color of light includes wave band continuous print the 6th band of light, the 7th band of light and the 8th band of light, wherein, 6th band of light, the 7th band of light are similar to the 3rd band of light, the 4th band of light and the 5th band of light successively with the 8th band of light, namely the wavelength of the 4th band of light is less than the wavelength of the 5th band of light, and more than the wavelength of the 3rd band of light, the wavelength of the 7th band of light is less than the wavelength of the 8th band of light, and more than the wavelength of the 6th band of light.
Specifically, color-separation and color-recombination film can be provided with on light splitting Multiplexing apparatus 602, color-separation and color-recombination film includes reflectance coating and dual band pass filter coating, reflectance coating is for reflecting the first color of light of first band and the first color of light of second band, dual band pass filter coating is used for reflecting the 4th band of light and the 7th band of light, and transmission the 3rd band of light, 5th band of light, 6th band of light and the 8th band of light, wherein, sequential light generates first group of three primary colours light and second group of three primary colours light by reflectance coating and dual band pass filter coating, wherein, first group of three primary colours light and second group of three primary colours light are two groups of primary lights that different eyes accept, first group of three primary colours light includes the first color of light of first band, 4th band of light and the 7th band of light, second group of three primary colours light includes the first color of light of second band, 3rd band of light, 5th band of light, 6th band of light and the 8th band of light.
Light splitting Multiplexing apparatus 602 can adopt three-chip type Philips prism, and wherein, reflectance coating is used for reflecting the first color of light, including the first color of light of first band and second band, transmission the second color of light and the 3rd color of light. Dual band pass filter coating is then used for reflecting the 4th band of light and the 7th band of light transmission the 3rd band of light, the 5th band of light, the 6th band of light and the 8th band of light.
Sequential light can first pass through after reflectance coating reflects the first color of light, the light transmitted by reflectance coating again carries out light splitting through dual band pass filter coating, such as, first sequential light first passes through reflectance coating and reflects the first color of light of first band, transmit the second color of light, second color of light reflects the 4th band of light through dual band pass filter coating, and transmit the 3rd band of light and the 5th band of light, thus obtain the first color of light of the first band after light splitting, the 4th band of light and the 3rd band of light and the 5th band of light successively; Second sequential light, along identical path transmission, obtains the first color of light of the second band after light splitting, the 7th band of light and the 6th band of light and the 8th band of light successively.
Sequential light can also first pass through after dual band pass filter coating carries out light splitting, then the light transmitted by dual band pass filter coating carries out light splitting through reflectance coating, and this reflectance coating has reflection the first color of light, the characteristic of other color of light of transmission. Such as, first sequential light first passes through dual band pass filter coating and reflects the 4th band of light, and transmit the first color of light of first band, the 3rd band of light and the 5th band of light, the first color of light transmission the 3rd band of light and the 5th band of light of first band is reflected, thus obtaining the 4th band of light after light splitting, the first color of light of first band and the 3rd band of light and the 5th band of light successively then through reflectance coating; Second sequential light along identical path transmission, obtains the first color of light of the seven band of light/second band after light splitting and the 6th band of light and the 8th band of light successively.
Sequential light generates at least two group three primary colours light after light splitting, including first group of three primary colours light and second group of three primary colours light, first group of three primary colours light includes the first color of light of first band, the 4th band of light and the 7th band of light, and second group of three primary colours light includes the first color of light of second band, the 3rd band of light, the 5th band of light, the 6th band of light and the 8th band of light. First group of three primary colours light and second group of three primary colours light are two groups of primary lights that different eyes receive, wherein, first group of three primary colours light is the three primary colours light that first eye of human eye receive, and second group of three primary colours light is the three primary colours light that second eye of human eye receive.
First group of three primary colours light can be the primary lights that the left eyeglass lens of glasses 605 is transmissive to, and second group of three primary colours light can be the primary lights that the right eye eyeglass of glasses 605 is transmissive to. Due in first group of three primary colours light, 4th band of light is the light of the middle wave band intercepted from the second color of light, 7th band of light is the light of the middle wave band intercepted from the 3rd color of light, make the colour gamut of first group of three primary colours light and second group of three primary colours light relatively, and then make the colour gamut of light received by two eyes of human body relatively.
Photomodulator 603 is for being modulated first group of three primary colours light and second group of three primary colours light, and by the luminous reflectance after modulation to light splitting Multiplexing apparatus 602, exports after light splitting Multiplexing apparatus 602 closes light.
Photomodulator 603 can be DMD, for first group of three primary colours light and second group of three primary colours light are carried out image modulation, light after re-modulation is re-reflected on light splitting Multiplexing apparatus 602, output after conjunction light is carried out through light splitting Multiplexing apparatus 602, owing to sequential light includes at the first sequential light not exported in the same time and the second sequential light, therefore, the light after light splitting Multiplexing apparatus 602 closes light still includes the light of two sequential.
According to embodiments of the present invention, sequential light generates first group of three primary colours light and second group of three primary colours light by light splitting Multiplexing apparatus, wherein, first group of three primary colours light and second group of three primary colours light are two groups of primary lights that different eyes accept, first group of three primary colours light includes the first color of light of first band, the 4th band of light and the 7th band of light, and second group of three primary colours light includes the first color of light of second band, the 3rd band of light, the 5th band of light, the 6th band of light and the 8th band of light. So that the colour gamut of first group of three primary colours light and second group of three primary colours light is relatively, solve the problem that the colour gamut difference of the light that right and left eyes in prior art receives is bigger, the effect that the colour gamut of the light having reached human body right and left eyes is received is close.
The 3D projection display system of the embodiment of the present invention also includes: projection lens 604 and glasses 605, and projection lens 604 is used for receiving photomodulator and controls first group of three primary colours light of output and second group of three primary colours light. Glasses 605 include left eyeglass lens and right eye eyeglass, and wherein, left eyeglass lens is used for first group of three primary colours light of transmission, and right eye eyeglass is used for second group of three primary colours light of transmission. The projection lens 604 light to receiving carries out imaging, coordinates glasses to make left eyeglass lens generate left-eye image, and right eye eyeglass generates eye image, thus forming 3D imaging.
Preferably, as shown in Figure 8, light splitting Multiplexing apparatus 602 includes: the first prism, the second prism and prism, first prism, the second prism and prism be order arrangement () successively in Fig. 8 from right to left, mixed light passes sequentially through the first prism, the second prism and prism, the direction of arrow in light splitting Multiplexing apparatus 602 as shown in Figure 8. It is provided with reflectance coating between first prism and the second prism, between the second prism and prism, is provided with dual band pass filter coating. Above-mentioned prism can adopt Philips prism.
It is provided with reflectance coating between first prism and adjacent two faces of the second prism, it is provided with reflectance coating 607 between first prism and adjacent two faces of the second prism, reflectance coating 607 is used for reflecting the first color of light, the face that second prism and prism fit is provided with dual band pass filter coating 608, dual band pass filter coating 608 is for reflecting the 4th band of light in the second color of light, and the 3rd band of light in transmission the second color of light and the 5th band of light, and the 7th band of light in reflection the 3rd color of light, and the 6th band of light in transmission the 3rd color of light and the 8th band of light.
Specifically, being sequentially provided with reflectance coating 607 and dual band pass filter coating 608 between three prisms, combine with light source light spectrum, reflectance coating 607 can reflect blue light, dual band pass filter coating 608 may be used for the light of the middle band part of reflection green glow and HONGGUANG, the light of transmission green glow and other parts of HONGGUANG. Each color of light after light splitting, after light modulator modulates, is being re-reflected on light splitting Multiplexing apparatus 602 and is carrying out closing light through color-separation and color-recombination film, exporting to projection lens imaging.
According to embodiments of the present invention, adopt three-chip type prism as light splitting Multiplexing apparatus, so that three part light after different prism outgoing light splitting, it is not necessary to adopt different parts to carry out light splitting and to close optical processing, simple in construction.
As shown in Figure 8, in the embodiment of the present invention, photomodulator may include that the first DMD (i.e. DMD6031), the second DMD (i.e. DMD6032) and the 3rd DMD (i.e. DMD6033), wherein, DMD6031 is arranged on reflectance coating 607 and reflects in the light exit direction of i.e. the first prism on the direction of the first color of light, for the first color of light of the first light and first band and the first color of light of second band are modulated; DMD6032 is arranged on dual band pass filter coating 608 and reflects in the light exit direction of i.e. the second prism on the direction of the 4th band of light and the 7th band of light, for the second light i.e. the 4th band of light and the 7th band of light is modulated; DMD6033 is arranged on dual band pass filter coating 608 and transmits in the light exit direction of i.e. prism on the 3rd light i.e. direction of the 3rd band of light, the 5th band of light, the 6th band of light and the 8th band of light, that is to say in the exit direction on the direction of the 3rd band of light, the 5th band of light, the 6th band of light and the 8th band of light, for the 3rd band of light of transmission, the 5th band of light, the 6th band of light and the 8th band of light are modulated.
DMD6031, DMD6032 and DMD6033 are successively set on the exit direction of the light of the first prism, the second prism and prism, for receiving the primary lights emitted from prism, in order to it is modulated. Specifically, can be by the two of sequential kinds of blu-ray reflections to DMD6031, second prism adopts green light band and the equal generating portion reflection of red spectral band dual band pass filter coating, green glow and HONGGUANG and fractional transmission, and the green glow and the HONGGUANG that form two groups of sequential are assigned on DMD6032 and DMD6033.
Fig. 9 is the structural representation of 3D projection display system according to a second embodiment of the present invention. The 3D projection display system of this embodiment can as a kind of preferred implementation of the 3D projection display system of above-described embodiment.
As it is shown in figure 9, light source includes: the first LASER Light Source 901, for launching the first color of light of first band; Second LASER Light Source 902, for launching the first color of light of first band and the first color of light of second band; First colour wheel 905, it is arranged on the light emission direction of the first LASER Light Source, first colour wheel 905 is provided with the second color fluorescence powder and the 3rd color fluorescence powder, and the first colour wheel 905 is used for the second color of light and the 3rd color of light of generation sequential under the exciting of the first color of light of first band; Second colour wheel 906 is arranged on the light emission direction of the second LASER Light Source, second colour wheel 906 is provided with scattering powder, second colour wheel 906 is for being scattered depolarization to the first color of light of the second band that the second LASER Light Source 902 is launched, wherein, to launch the first color of light of first band identical with the switching frequency of the second color fluorescence powder on the switching frequency of the first color of light of second band and the first colour wheel and the 3rd color fluorescence powder for the second LASER Light Source 902.
According to embodiments of the present invention, in order to facilitate choosing of LASER Light Source, the wavelength of one group of light of the second LASER Light Source output and the optical wavelength of the first LASER Light Source output are close, i.e. the first color of light of first band.
Further, the first LASER Light Source 901 and the second LASER Light Source 902 all adopt semiconductor laser, and wherein, the second LASER Light Source 902 includes the semiconductor laser of two groups of different-wavebands. A semiconductor laser in second LASER Light Source 902 and the semiconductor laser in the first LASER Light Source 901 are identical laser instrument. So, choosing of laser instrument is facilitated.
As it is shown in figure 9,3D projection display system also includes: the first condenser lens 903, it is arranged between the first LASER Light Source 901 and the first colour wheel 905, for the first color of light that the first LASER Light Source 901 is launched is focused on the first colour wheel 905; Second condenser lens 904, is arranged between the second LASER Light Source 902 and the second colour wheel 906, for the first color of light that the second LASER Light Source 902 is launched is focused on the second colour wheel 906.
As it is shown in figure 9,3D projection display system also includes: the first collecting lens 917, it is arranged on the light output direction of the first colour wheel 905; Second collecting lens 918, is arranged on the light output direction of the second colour wheel 906; First reflecting mirror 910, for reflecting the first color of light of the first band that the second collecting lens 918 is collected; Multiplexing apparatus 909, Multiplexing apparatus 909 is for reflecting the first color of light of first band and the first color of light of second band, and transmission the second color of light and the 3rd color of light, obtains mixed light. Wherein, first color of light of the second colour wheel 906 output arrives the first reflecting mirror 910 through the first collecting lens 917, first reflecting mirror 910 is for reflexing to Multiplexing apparatus 909 by the first color of light, second color of light and the 3rd color of light of the first colour wheel 905 output reach Multiplexing apparatus 909 through the first collecting lens 917, Multiplexing apparatus 909 is by reflecting the first color of light, and the first color of light, the second color of light and the 3rd color of light are carried out closing light by transmission the second color of light and the 3rd color of light, obtain sequential light.
As it is shown in figure 9,3D projection display system also includes: square rod 911, it is arranged on the launch party of mixed light upwards, for mixed light is carried out dodging; Relay lens 912, is arranged on the light output direction of square rod 911; Second reflecting mirror 913, is arranged on the light output direction of relay lens 912, for reflecting the light of relay lens 912 output; Total reflection prism 914, for the light total reflection that reflected by the second reflecting mirror 913 to the prism 915 being coated with color-separation and color-recombination film.
Specifically, with the first color of light for blue light, the second color of light is green glow, and the second color of light is HONGGUANG is example, and the embodiment of the present invention is described.
As shown in Figure 9, this 3D projection display system includes the first LASER Light Source 901 and the second LASER Light Source 902, both at blue semiconductor laser, the light that first LASER Light Source 901 sends focuses on the first colour wheel 905 place after the first condenser lens 903, the light that second LASER Light Source 902 sends focuses on the second colour wheel 906 place after the second condenser lens 904, first colour wheel 905 and the second colour wheel 906, as shown in Figure 10, first colour wheel 905 is provided with two sections of fluorescent material, respectively green emitting phosphor and red fluorescence powder, the green fluorescence and red fluorescence that produce sequential is excited by the first LASER Light Source 901, second colour wheel 906 is provided with the scattering powder of whole section, the blue laser that second LASER Light Source 902 sends is scattered depolarization, second LASER Light Source 902 comprises the blue laser of two groups of different-wavebands, in order to convenient, one of which can choose the blue laser identical with the first LASER Light Source 901 wave band, second LASER Light Source 902 carries out the switching of two kinds of blue lights with the frequency identical with green glow on the first colour wheel 905 and HONGGUANG switching frequency, the light sequential that two groups of light sources export from colour wheel is as shown in figure 11, green glow G and blue light B1 synchronizes, HONGGUANG R and blue light B2 synchronizes.
Multiplexing apparatus 909 is arrived through the first collecting lens 907 from the light of the first colour wheel 905 output, after the first reflecting mirror 910 reflection, Multiplexing apparatus 909 is arrived from the light of the second colour wheel 906 output, Multiplexing apparatus 909 has transmission green glow and HONGGUANG, the effect of reflection blue light, thus two-beam synthesis is a branch of enters into square rod 911, through relay lens 912 after even light, reflecting mirror 913 arrives TIR prism 914 place, it is totally reflected by TIR prism 914, incide color-separation and color-recombination prism 915, color-separation and color-recombination prism 915 comprises three prisms, it is placed with DMD916 after three prisms, DMD917, DMD918, color-separation and color-recombination film 919 and 920 it is coated with respectively between three prisms, combine with light source light spectrum, color-separation and color-recombination film 919 and 920 reflectivity curve is as shown in figure 12, in figure, solid line represents the spectrum of the first sequential, dotted line represents the spectrum of the second sequential, reflectance coating 919 reflects blue light, 920 is dual band pass rete, green glow and red light portion reflection, fractional transmission.
After light splitting, as shown in figure 13, under dual band pass filter coating 920 acts on, green glow is divided into G1 and G2+G3 to its spectrum schematic diagram, and HONGGUANG is divided into R1 and R2+R3. Modulate back reflection through DMD and close light, be ultimately imaged by camera lens 921. The sequential of three GeDMDShang Chu Ricohs is as shown in figure 14, combine with glasses 922 optical filter coating shown in Figure 13, obtain eye primary lights sequential around, wherein grey parts represents left eye primary lights, and white portion represents right eye primary lights, adopts this embodiment of the present invention, make existing left eye primary lights in each sequential, there are again right eye primary lights, it is thus possible to ensure that every eyes light intensity change intensity eases up, reduce the degree of fatigue of eyes. Simultaneously because adopt dual band pass optical filtering plated film, right and left eyes three primary colours chromaticity coordinates is basically identical, and colour gamut is close, all basically reaching REC.709 standard, as shown in figure 15, the method makes stereo display color true to nature, not needing too much to correct in algorithm process, light efficiency is high.
Alternatively, the light source of the embodiment of the present invention includes LASER Light Source and LED light source, and wherein, LASER Light Source is for launching the first color of light of first band and the first color of light of second band; LED light source is for launching the second color of light comprising the 3rd wave band, the 4th wave band and the 5th wave band, and LED light source is additionally operable to launch the 3rd color of light comprising the 6th wave band, the 7th wave band and the 8th wave band.
Figure 16 is the structural representation of 3D projection display system according to a third embodiment of the present invention. The 3D projection display system of this embodiment can as a kind of preferred implementation of the 3D projection display system of above-described embodiment.
In the embodiment of the present invention, light source includes LASER Light Source 901 and colour wheel 905. The LASER Light Source 901 of this embodiment is different from the first LASER Light Source 901 shown in Fig. 9 and colour wheel 905 function with colour wheel 905. Will be described in detail below.
LASER Light Source 901 can adopt laser instrument, for launching the first color of light of first band and the first color of light of second band. First color of light of first band and the first color of light of second band, as exciting light, are used for exciting colour wheel 905 to produce two kinds of sequential light. Specifically, LASER Light Source 901 is for the first color of light in the first color of light and second band that do not export first band in the same time.
Colour wheel 905 is arranged on the launch party of the first color of light upwards, colour wheel 905 is provided with fluorescent material, this fluorescent material can include the second color fluorescence powder and the 3rd color fluorescence powder, wherein, second color fluorescence powder is for generation the second color of light under the exciting of the first color of light of first band, and the 3rd color fluorescence powder is for generation the 3rd color of light under the exciting of the first color of light of second band; First color of light of the second color fluorescence powder transmissive portion first band, the first color of light of the 3rd color fluorescence powder transmissive portion second band.
Colour wheel 905 for generation the first sequential light under the exciting of the first color of light of first band, and under the exciting of the first color of light of second band generation the second sequential light.
Colour wheel 905 can be one or more, correspondingly, LASER Light Source 901 can also be one group or many groups, wherein, when colour wheel 905 is one, colour wheel 905 is provided with the two sections of fluorescent material i.e. fluorescent material of the second color of light and the fluorescent material of the 3rd color of light, wherein, LASER Light Source 901 launches the first color of light of two groups of wave bands, wherein, a part for the first color of light of first band excites the fluorescent material of the second color of light, exports the second color of light, another part is still the first color of light of first band, obtains the first sequential light; A part for first color of light of second band excites the fluorescent material of the 3rd color of light, exports the 3rd color of light, and another part is still the first color of light of second band, obtains the second sequential light.
When colour wheel 905 is two, one of them colour wheel can be provided with two sections of fluorescent material, the fluorescent material of one section of second color, and the other end is the fluorescent material of the 3rd color, and another colour wheel can be provided with the scattering powder of whole section. Correspondingly, LASER Light Source 901 is also two, and two LASER Light Sources 901 launch two group of first color of light respectively, are respectively used to excite above-mentioned two colour wheel 905.
According to embodiments of the present invention, adopting LASER Light Source excitated fluorescent powder to produce sequential light, relative to adopting LED light source, its brightness is high, and light efficiency is high.
Additionally, it is different from the pure LASER Light Source 3D of existing aberration formula 3D and existing 6P, the present invention adopts LASER Light Source to excite colour wheel to generate sequential light, avoid the traditional colour ropy shortcoming of differential 3D rendering, owing to adopting the light source for launching a kind of color of light, relative to the pure LASER Light Source 3D of existing 6P, reduce the cost of 3D projection display system, and simple in construction, cost is easy to control.
The 3D projection display system of the embodiment of the present invention shown in Figure 16 and the 3D projection display system shown in Fig. 9 are distinctive in that, two groups of light sources are replaced with one group of light source.
Specifically, with the first color of light for blue light, the second color of light is green glow, and the 3rd color of light is HONGGUANG is example, LASER Light Source 901 is the Several problems of evaluating laser beam quality of unstable of two groups of different-wavebands, the i.e. tertiary color of colour wheel 905 is taken turns, and as shown in figure 17, is provided with two sections of fluorescent material, respectively green emitting phosphor and red fluorescence powder, the blue light B1 that first color of light laser instrument of first band is launched incides on green emitting phosphor, is partly absorbed and is converted into green glow, and part is not absorbed still for blue light B1; The blue light B2 that first color of light laser instrument of second band is launched incides on red fluorescence powder, is partly absorbed and is converted into HONGGUANG, and part is not absorbed still for blue light B2. The blue laser switch speed of two groups of wave bands keeps consistent with green glow on colour wheel and HONGGUANG switch speed, and as shown in figure 18, the function of 3D projection display system remainder components and parts components and parts same as shown in Figure 9 is identical for the sequential light of colour wheel output.
According to embodiments of the present invention, two groups of light sources are reduced to one group of light source, save system space and cost.
Alternatively, reflectance coating is additionally operable to a part of wave band of reflection the 3rd band of light, another part wave band of dual band pass filter coating transmission the 3rd band of light.
Specifically, with the first color of light for blue light, second color of light is green glow, 3rd color of light is HONGGUANG, wherein, the light that 3rd band of light is green glow short wavelength part is example, after light splitting, its spectrum schematic diagram is as shown in figure 20, green glow is included the green glow (including G2 and G3) of the 3rd wave band, green glow G1 and the five wave band G4 of the 4th wave band, HONGGUANG includes the HONGGUANG R2 of the 6th wave band, the HONGGUANG R3 of HONGGUANG R1 and the eight wave band of the 7th wave band, wherein, reflectance coating is for reflecting the blue light B1 of first band, the blue light B2 and green glow G2 of second band, dual band pass filter coating is for reflecting the HONGGUANG of the 4th wave band green glow and the 7th wave band, and the remaining light of transmission.
It should be noted that in the example above, the 3rd band of light can also be long wavelength's part of green glow. It addition, when the first color of light is HONGGUANG, the second color of light is blue light, when the 3rd color of light is green glow, the 3rd band of light can be short wavelength or long wavelength's light partly of blue light; When the first color of light is green glow, the second color of light is HONGGUANG, and when the 3rd color of light is blue light, the 3rd band of light can be short wavelength or long wavelength's light partly of HONGGUANG; Other situations are similar with above-mentioned situation, repeat no more here.
According to embodiments of the present invention, reflectance coating is additionally operable to a part of wave band of reflection the 3rd band of light, another part wave band of dual band pass filter coating transmission the 3rd band of light, so that existing left eye primary lights have again right eye primary lights in each sequential, it is thus possible to ensure that every eyes light intensity change intensity eases up, reduce the degree of fatigue of eyes.
Specifically, the color-separation and color-recombination film 607 and 608 on prism 603 becomes as shown in figure 19, and anti-blue Light Film moves to green glow direction, reflects a part of green glow, corresponding, and green glow bandpass wave band moves a segment distance to long-wave band direction, and HONGGUANG bandpass wave band is constant. Obtain the first sequential light after light splitting and the second sequential light spectrum as shown in figure 20, each band of light after light splitting incides on three DMD, combine with the left and right glasses optical filter shown in Figure 21, obtaining its sequential as shown in figure 22, grey parts represents left eye primary lights, and white portion represents right eye primary lights, the method is adopted to make existing left eye primary lights in each sequential, there are again right eye primary lights, it is thus possible to ensure that every eyes light intensity change intensity eases up, reduce the degree of fatigue of eyes. Specifically, spectral distribution graph is as shown in figure 23.
Left eye blue light is combined by the present embodiment with part green glow, the REC.709 blue light that the left eye indigo plant laser making human eye sensation partially purple accepts to human eye is close, simultaneously also with right eye indigo plant laser closer to, in green glow and red light portion, owing to have employed dual band pass optical filtering plated film so that right and left eyes green glow and HONGGUANG are close, right and left eyes colour gamut is close, and all reach more than the 110% of REC.709 standard so that stereo display color is more life-like, and has specular removal.
Preferably, the first color of light of the embodiment of the present invention is blue light, and the second color of light is green glow, and the 3rd color of light is HONGGUANG. Correspondingly, light source adopts blue semiconductor laser, owing to the light source of the embodiment of the present invention is blue semiconductor laser, simple in construction, cost is easy to control, and 6P formula 3D selects two groups of RGB semiconductor lasers, its cost is high, system complex, and red green laser efficiency is low, and pure LASER Light Source dissipation speckle technical difficulty is big, what is more important, the invention enables right and left eyes colour gamut close, 3D effect is true to nature, and light efficiency is high.
A kind of alternative as aforesaid way, first color of light is green glow, and the second color of light is HONGGUANG, and the 3rd color of light is blue light, HONGGUANG comprises the 3rd band of light, the 4th band of light and the 5th band of light in this way, and blue light includes the 6th band of light, the 7th band of light and the 8th band of light. A part for the 3rd band of light for HONGGUANG can be used under the program to supplement the green glow G1 of first band, a part for blue light the 8th wave band can also be selected simultaneously to supplement the green glow G2 of second band. As the another kind of alternative of aforesaid way, the first color of light is HONGGUANG, and the second color of light is blue light, and the 3rd color of light is green glow.
To sum up, embodiments provide a kind of 3D projection display system, it comprises light source, colour wheel, light relay system, combined optical system, TIR prism, color-separation and color-recombination prism, three DMD and projection lens, light source combines with colour wheel and is divided into two groups, light source 1 excites segmentation colour wheel 1 to produce green glow and the HONGGUANG of sequential, light source 2 is made up of the blue semiconductor laser of two kinds of wave bands, the two alternation switch excites colour wheel 2 to produce two kinds of blue lights of sequential, a kind of blue light is Tong Bu with above-mentioned green glow, and another kind of blue light is Tong Bu with above-mentioned HONGGUANG; The light of colour wheel outgoing is collimated and directs into combined optical system place by light relay system, and combined optical system, by the blue light of sequential and green glow and blue light and HONGGUANG conjunction color, incides color-separation and color-recombination prism after TIR prism; Color-separation and color-recombination prism is three-chip type Philips prism, the anti-blue film of first prism plating, by on the two of sequential kinds of blu-ray reflections to DMD1, second prism adopts green light band and the equal generating portion reflection of red spectral band dual band pass filter coating, green glow and HONGGUANG and fractional transmission, and the green glow and the HONGGUANG that form two groups of sequential are assigned on DMD2 and DMD3, it is consequently formed right and left eyes red, green, blue three primary colours light, generate right and left eyes image through projection lens, coordinate optical filter glasses, finally realize 3D and show.
It is different from the pure LASER Light Source 3D of traditional aberration formula 3D and existing 6P, the present invention adopts semiconductor laser light resource to excite colour wheel to generate mixed light, left and right is generated furious by Philips prism dual band pass plated film, green, blue three primary colours, which makes right and left eyes three primary colours complete, avoid the traditional colour ropy shortcoming of differential 3D rendering, its light source is blue semiconductor laser simultaneously, simple in construction, cost is easy to control, and 6P formula 3D selects two groups of RGB semiconductor lasers, its cost is high, system complex, and red green laser efficiency is low, pure LASER Light Source dissipation speckle technical difficulty is big, what is more important, the invention enables right and left eyes colour gamut close, 3D effect is true to nature, light efficiency is high, in a word, the invention provides that one is more simple and practical and the good 3D display system of effect.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
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| PCT/CN2015/092888 WO2016066074A1 (en) | 2014-10-28 | 2015-10-27 | 3d projection display system |
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| JP6611019B2 (en) * | 2018-02-27 | 2019-11-27 | ウシオ電機株式会社 | Light source device, projector |
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