CN111240139B - Projection display system, projection module and 3D glasses - Google Patents
Projection display system, projection module and 3D glasses Download PDFInfo
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- CN111240139B CN111240139B CN201811443968.6A CN201811443968A CN111240139B CN 111240139 B CN111240139 B CN 111240139B CN 201811443968 A CN201811443968 A CN 201811443968A CN 111240139 B CN111240139 B CN 111240139B
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- 239000011521 glass Substances 0.000 title claims abstract description 83
- 239000011248 coating agent Substances 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 21
- 239000003086 colorant Substances 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 17
- 239000013307 optical fiber Substances 0.000 description 36
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 239000007888 film coating Substances 0.000 description 3
- 238000009501 film coating Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 210000004556 brain Anatomy 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/103—Scanning systems having movable or deformable optical fibres, light guides or waveguides as scanning elements
Abstract
The invention discloses a projection display system, a projection module and 3D glasses, which are used for solving the technical problem of poor display projection effect in the prior art. The projection display system comprises a projection module and 3D glasses matched with the projection module, the projection module comprises an input light source and a display unit, the input light source comprises at least one group of light sources, each group of light sources outputs light with at least one wavelength in R, G, B wavebands, the display unit receives the light output by the light sources and then modulates and emits image light of two parallax images at the same time, the waveband combination of the image light of the two parallax images at least comprises R, G, B wavebands, and then the 3D glasses receive the light of the two parallax images from the projection module and are matched with the projection module to realize 3D display; the left and right glasses lenses in the 3D glasses respectively receive the two parallax images to form 3D display, so that human eyes receive at least three colors of RGB, colors of 3D content watched by users are enriched, and projection display effect is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a projection display system, a projection module, and 3D glasses.
Background
With the development of display technology, more and more 3D (3D) cinema is going into life of people, and the 3D display technology has the characteristics of prominent main body, strong stereoscopic impression, lifelike effect and the like, and a viewer can actually feel that various objects in a film appear to come from a scene in the watching process, so that the viewer seems to be placed in the film, and the substituting sense is very strong.
The red-blue 3D movie display technology adopts a left projector and a right projector, two parallax images shot at different visual angles are respectively projected by two different colors of red and blue, a user wears color difference type 3D glasses (generally, left, right and blue), red lenses transmit red light, and blue lenses transmit blue light, so that the user can see the red image (shooting visual angle 1) at the left eye and see the blue image (shooting visual angle 2) at the right eye, and as the two images are shot at different positions, the two images respectively and independently enter the left eye and the right eye, thereby simulating the parallax of images received by the two eyes in the real world, and the 3D effect is generated through calculation of the brain, so that the user feels three-dimensional.
However, in the viewing process, the left eye of the user can only receive the red picture, the right eye can only receive the blue picture, the image color has poor presentation effect, even distortion, and the user experience is low.
Disclosure of Invention
The invention aims to provide a projection display system, a projection module and 3D glasses, which are used for solving the technical problem of poor display projection effect in the prior art.
In order to achieve the above object, in a first aspect, the present invention provides a projection display system, comprising:
the projection module comprises an input light source and a display unit, wherein the input light source comprises at least one group of light sources, each group of light sources at least comprises R, G, B light emitting units, each group of light sources at least outputs light with at least one wavelength in R, G, B three wavebands, the display unit receives the light output by the input light source and then modulates and outputs image light of two different parallax images at the same time, and the waveband combination corresponding to the image light of the two parallax images at least comprises R, G, B wavebands;
the 3D glasses are used for receiving the image light of the two parallax images from the projection module and are matched with the projection module to realize 3D display; wherein one of the left and right glasses lenses of the 3D glasses receives image light of a first parallax image of the two parallax images, and the other glasses lens receives image light of a second parallax image of the two parallax images.
Optionally, the display unit is an optical fiber scanning unit, the optical fiber scanner in the optical fiber scanning unit includes at least one scanning optical fiber corresponding to the input light source, one scanning optical fiber is correspondingly coupled into light output by at least one group of light sources, and the optical fiber scanning unit scans and outputs light of two parallax images through the at least one scanning optical fiber.
Alternatively, when a plurality of sets of light sources are included in the input light source, the light emitting units of the same wavelength band in the plurality of sets of light sources are configured to emit light of different wavelengths.
Optionally, the first parallax image at least includes light of at least one of three wavebands R, G, B, the second parallax image at least includes light of at least two of three wavebands R, G, B, and wavelengths corresponding to the image light of the two parallax images are different from each other.
Optionally, the left and right glasses lenses of the 3D glasses are respectively provided with a film for transmitting light of at least one wavelength in the received light, one of the left and right glasses lenses after film coating can receive the image light of the first parallax image, and the other glasses lens can receive the image light of the second parallax image.
Optionally, the coating films on the left and right lenses in the 3D glasses are bandpass filter films and/or bandstop filter films.
In a second aspect, an embodiment of the present invention provides a projection module, including an input light source and a display unit corresponding to the input light source, where the input light source includes at least one group of light sources, each group of light sources includes at least R, G, B three light emitting units, each group of light sources outputs light with at least one wavelength in R, G, B wavelength bands, the display unit receives light output by the input light source and then modulates image light emitting two different parallax images at the same time, and a band combination of the image light of the two parallax images includes at least R, G, B wavelength bands.
Optionally, the display unit is an optical fiber scanning unit, the optical fiber scanner in the optical fiber scanning unit includes at least one scanning optical fiber corresponding to the input light source, one scanning optical fiber is correspondingly coupled into light output by at least one group of light sources, and the optical fiber scanning unit scans and outputs light of two parallax images through the at least one scanning optical fiber.
In a third aspect, an embodiment of the present invention provides a 3D glasses, where left and right glasses lenses of the 3D glasses respectively receive image lights of two parallax images for 3D display, and a band combination corresponding to the image lights of the two parallax images includes at least R, G, B three bands.
Optionally, the left and right glasses lenses of the 3D glasses are respectively provided with a film for transmitting light of at least one wavelength in the received light, one of the left and right glasses lenses after film coating can receive the image light of the first parallax image, and the other glasses lens can receive the image light of the second parallax image.
Optionally, the coating films on the left and right lenses in the 3D glasses are bandpass filter films and/or bandstop filter films.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
in an embodiment of the invention, a projection display system comprises a projection module and 3D glasses matched with the projection module. The projection module comprises an input light source and a display unit, wherein the input light source comprises at least one group of light sources, each group of light sources outputs light with at least one wavelength, the display unit receives the light output by the input light source and then modulates and emits image light of two different parallax images at the same time, the wave band combination corresponding to the image light of the two parallax images at least comprises R, G, B wave bands, and then, 3D glasses receive the image light of the two parallax images from the projection module, so that 3D display can be realized by matching with the projection module; one of the left and right glasses lenses of the 3D glasses receives image light of a first parallax image of the two parallax images, the other glasses lens receives image light of a second parallax image of the two parallax images, namely the left and right glasses lenses can respectively receive the two parallax images to form 3D display, so that eyes can receive light of at least three colors of RGB in real time, the colors of display contents are enriched for users to watch, and the projection display effect is improved.
Drawings
For a clearer description of embodiments of the invention or of solutions in the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being evident that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained, without inventive faculty, by a person skilled in the art from these drawings:
FIG. 1 is a schematic diagram of a projection display system according to an embodiment of the invention;
fig. 2A-2B are schematic structural diagrams of a projection display system according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic structural diagram of a projection display system according to an embodiment of the present invention, which may be used for 3D display. The projection display system includes a projection module 10 and cooperating 3D glasses 20. The projection module 10 comprises an input light source 101 and a display unit 102, wherein the input light source 101 comprises at least one group of light sources, each group of light sources at least comprises R, G, B light emitting units, and each group of light sources at least outputs light with at least one wavelength in R, G, B three wave bands; the display unit 102 receives the light output by the input light source 101 and then projects image light of two different parallax images at the same time, the wave band combination corresponding to the image light of the two parallax images at least comprises R, G, B wave bands, and then the 3D glasses 20 receive the image light of the two parallax images from the projection module and cooperate with the projection module 10 to realize 3D display; one of the left and right glasses lenses of the 3D glasses 20 receives image light of a first parallax image of the two parallax images, and the other glasses lens receives image light of a second parallax image of the two parallax images, so as to realize 3D display and enrich colors of 3D display contents.
It should be noted that fig. 1 is only an example of the projection display system provided in the embodiment of the present invention, and in practical applications, the projection display system may further include other components, such as a projector, a projection screen (e.g. a projection screen or a projection curtain), etc., where the projection screen may be disposed in the display unit 102 or separately disposed, which is not shown in fig. 1.
In the embodiment of the present invention, when an image is projected by using a projection display system, the display unit 102 in the projection module 10 receives the light of the three RGB bands output by the input light source 101, and then modulates the light of two different parallax images, for example, the mixed light of the first parallax image and the second parallax image, where the two parallax images are images obtained by photographing the same picture with different parallaxes, for example, the first parallax image and the second parallax image are images of the same scene photographed at different angular positions. In the projection process, the image light of the two parallax images includes at least three bands of RGB. Furthermore, the left and right glasses lenses of the 3D glasses respectively receive the two parallax images to form 3D display, enrich the colors watched by the user and improve the projection display effect.
In order to enable those skilled in the art to better understand the technical solutions provided by the embodiments of the present invention, the following describes in detail each component of the projection display system provided by the embodiments of the present invention.
The projection module 10 is used for outputting a light beam of an image to be displayed, and the input light source 101 included in the projection module can be used for outputting light with different wavelengths in three RGB bands. The input light source 101 includes one or more groups of laser light sources, where each group of laser light sources may include at least three light emitting units of RGB, that is, include R, G, B single-color lasers (R, G, B, respectively, refer to red, green, and blue lasers), and each group of laser light sources may respectively emit light corresponding to three wavelength bands. For example, the emission wavelengths of the R, G, B three monochromatic lasers in the 1 group light source are 650nm, 530nm and 460nm respectively, or the emission wavelengths of the R, G, B three monochromatic lasers are 660nm, 540nm and 470nm respectively, and so on. In the embodiment of the invention, each group of light sources can output light with at least one wavelength in three RGB wave bands.
Wherein, a light emitting unit may also include a plurality of light emitters, for example, an R light emitting unit may be formed by mixing two light emitters with different wavelengths, and then a monochromatic laser (light emitting unit) may emit two different wavelengths in the same wavelength band, for example, an R' light emitter of the R light emitting unit emits red light with a wavelength of 650nm and an R "light emitter emits red light with a wavelength of 660 nm. When each light emitting unit comprises a plurality of light emitters, the light energy can be improved.
In practical application, the input light source 101 may output image light of two different parallax images through at least one group of laser light sources, and when the input light source 101 includes a plurality of groups of light sources, light emitting units of the same wavelength band in the plurality of groups of light sources are configured to emit light of different wavelengths. For example, the input light source 101 may emit two parallax images by using two groups of laser light sources, each group of laser light sources corresponding to different wavelengths in three wavelength bands of RGB, and each group of laser light sources is responsible for emitting light corresponding to one parallax image; alternatively, the input light source 101 may include only one set of laser light sources, and the set of laser light sources may include only three light emitting units R, G, B, each of which may include two light emitters emitting different wavelengths. The designer may configure according to the actual requirement, and the embodiment of the present invention does not specifically limit the configuration manner of the light source in the input light source 101.
After receiving the light output from the input light source 101, the display unit 102 in the projection module 10 can modulate the light emitting the image to be displayed. The display unit 102 may be provided with a corresponding modulator, in the process of emitting the image light of two different parallax images, in the display period of each frame of projection picture, the display unit 102 may control the modulator to modulate the light of the two parallax images through different color channels, so that the first parallax image of the two parallax images at least includes light of at least one of the three wavelength bands R, G, B, the second parallax image at least includes light of at least two of the three wavelength bands R, G, B, that is, the wavelength band combination of the image light of the two parallax images at least includes R, G, B three wavelength bands, and the wavelengths corresponding to the image light of the two parallax images are different from each other.
In the embodiment of the present invention, if a first parallax image of the two parallax images corresponds to (R1, G1, B1) light of three wavelengths and a second parallax image corresponds to (R2, G2, B3) light of three wavelengths, the band combination of the two parallax images may include: (1) three bands of the first parallax image+three bands of the second parallax image, i.e., the mixed light beam is (R1R 2, B1B2, G1G 2); (2) two bands of the first parallax image+two or three bands of the second parallax image, for example, the band corresponding to the first parallax image is (0, G1, B1), then the parallax image 2 may be (R2, G2, B2) or (R2, 0, B2) or (R2, G2, 0); (3) one band of the first parallax image+two or three bands of the second parallax image, for example, the band corresponding to the first parallax image is (0, B1), the second parallax image may be (R2, G2, 0) or (R2, G2, B2).
Preferably, each parallax image modulated and emitted by the projection module 10 in the embodiment of the present invention may correspond to three RGB bands, and wavelengths of light of different parallax images in the same band are different from each other, that is, the above (1) th band combination mode may enable light of a single parallax image received by human eyes to have richer colors, further solve a problem that color of a single parallax image may be missing in other band combination modes, and help to improve a final 3D display effect.
As an alternative embodiment, one or more projectors corresponding to the display unit 102 may be configured in the projection module 10 to project light of two parallax images modulated by the display unit 102, that is, light at least including (R), green (G), and blue (B) bands, where each projector emits light of any one or more of RGB bands. For example, when the projection module 10 emits the image light of the first parallax image and the second parallax image, the two projectors may be used to project the image light of the different parallax images, respectively, or one projector may be used to project the image light of the two parallax images at the same time.
In practical applications, the display unit 102 may be a fiber scanning module, a MEMS scanning or DMD chip, or the like.
In the embodiment of the present invention, when the display unit 102 is an optical fiber scanner, the optical fiber scanner includes at least one scanning optical fiber, one scanning optical fiber corresponds to light input into one or more groups of light sources, and when one scanning optical fiber corresponds to light of multiple groups of light sources, light with different wavelengths generated in the multiple groups of light sources is preferably input into one scanning optical fiber in the optical fiber scanner after being combined, so that light with multiple wavelengths can be scanned and emitted in one optical fiber in a wavelength division multiplexing manner. The combined beam may be red light, green light and blue light generated by R, G, B monochromatic lasers in a single group of light sources, or may be a combined beam of all light of multiple groups of light sources, or both the above two combined beams are included at the same time, which is not limited herein.
After the optical fiber scanner receives the light input to the light source 101, the two parallax images can be scanned by at least one scanning optical fiber, and the light corresponding to the two parallax images can be projected simultaneously by adopting different color channels. As shown in fig. 2A, when an optical fiber scanner is used as the display unit 102, the projection module 10 may be configured with only one display unit 102 (corresponding to only one projector) to scan light emitting two parallax images, so as to save projection cost. In fig. 2A, the combination of waveguides of two parallax images is taken as an example of the aforementioned combination method (1).
Alternatively, as an alternative embodiment, the display unit 102 may be a conventional MEMS scanning or DLP DMD chip, as shown in fig. 2B, where at least two display units 102 (corresponding to two projectors) are configured in the projection module 10 to respectively project the light of two parallax images. In fig. 2A, the waveguide combination of two parallax images is taken as an example of the aforementioned combination mode (3), and both parallax images include three wavelength bands of RGB.
Or as an optional embodiment, the projection display system may perform image processing on the first parallax image and the second parallax image to be projected through a terminal or a PC, so that three images with different colors of red, blue and green are overlapped into one picture, and then the picture is input to one projector for projection through modulation, and then each pixel point output by the laser light source corresponding to the one projector carries pixel information of two images with different fields of view.
In the embodiment of the present invention, if the projection module 10 projects two parallax images through the plurality of display units 102 (or projectors), the plurality of display units 102 (or projectors) have the same and synchronous frame rate, the display units 102 (or projectors) respectively project the image light of the corresponding parallax images with different wavelengths, and at the same time, the band combination of the mixed light beams of the two parallax images simultaneously emitted by the plurality of display units (or projectors) at least includes three bands of RGB.
During the projection, the frame rate of the display unit 102 determines the display time of each parallax image. For example, the frame rate is 60fps, i.e., the graphics processor can refresh 60 times per second, with a display duration of about 16ms per frame of parallax images. The display unit 102 projects two parallax images at the same time in different wavelength bands and/or wavelengths within the display segment.
For example, the parallax image 1 corresponds to (R1, G1, B1) three wavelengths of light, the parallax image 2 corresponds to (R2, G2, B3) three wavelengths of light, and the display unit 102 may project the parallax image 1 through wavelengths of at least one of the three wavelength bands of RGB, such as "r1+b1", while projecting the parallax image 2 through wavelengths of at least two of the three wavelength bands of RGB, and include at least three wavelength bands of RGB, such as "g2+b2", in combination with the wavelength bands of the parallax image 1. Therefore, in each frame of display screen, the display unit 102 can output light including three colors of RGB, so that compared with the existing method of outputting only red Lan Guanglai in one frame of image display period, the projection color is increased, and the color in the display period of each frame of parallax image is enriched.
If the display unit 102 in the projection module 10 is an optical fiber scanner, the optical fiber scanner can scan two parallax images through at least one scanning optical fiber, and simultaneously project scanning light of each parallax image by adopting different color channels, and one scanning optical fiber can correspond to one or more groups of light sources. For example, the optical fiber scanner includes 1 scanning optical fiber, the 1 scanning optical fiber is coupled into light after being combined by two groups of light sources (each group corresponds to three RGB wave bands of one parallax image) in a wavelength division multiplexing manner, and then outputs light of two parallax images; or the optical fiber scanner comprises two scanning optical fibers, wherein the scanning optical fiber 1 scans red light and green light of a wave band corresponding to the first parallax image, the corresponding color channel is (R1, G1, 0), the scanning optical fiber 2 scans blue light emitting out of the second parallax image, and the corresponding color channel is (0, B2); alternatively, three scanning fibers are adopted as the scanning fibers, the scanning fiber 1 projects red light (R1, 0) in the first parallax image, the scanning fiber 2 projects green light (0, G2, 0) in the second parallax image, and the scanning fiber 3 projects blue light (0, B1) in the first parallax image or blue light (0, B2) in the second parallax image, so that two parallax images can be scanned simultaneously by only one fiber scanner and projection light with rich colors can be emitted.
The light emitted by the projection module 10 reaches the projection screen, and the light reflected by the projection screen (for example, the projection screen is a projection curtain) or refracted by the projection screen (for example, the projection screen is a voting screen) is incident on the 3D glasses 20. The left and right lenses of the 3D glasses 20 respectively receive image light of different parallax images, for example, the left lens receives image light of a first parallax image of the two parallax images, and the right lens receives image light of a second parallax image, thereby forming a 3D effect through brain processing. The first parallax image and the second parallax image described herein are images for distinguishing different parallaxes only, and are not limiting of the spectacle lens receiving image, and in the subsequent embodiment, the parallax images represented by the two images are interchangeable.
The left and right lenses of the 3D glasses 20 are respectively provided with a coating film for transmitting at least one wavelength of the received light. In the embodiment of the present invention, the coating film on one of the two lenses of the 3D glasses 20 can transmit light of at least one of the R, G, B bands included in the received light, the coating film on the other lens is light of the other two of the R, G, B bands included in the received light, and the two lenses respectively transmit light of different wavelengths. Therefore, the band combination of the light beams after passing through the 3D glasses at the same time includes light beams of three RGB bands corresponding to the two parallax images.
Of course, in order to make the coated left and right lenses respectively receive the image light of the two parallax images, even if one of the coated left and right lenses can receive the image light of the first parallax image and the other lens can receive the image light of the second parallax image, the wavelengths applied by the coating film on the different (left and right lenses) in the 3D glasses can be configured in advance according to the wavelengths of the light of the two parallax images, respectively, so as to correspond to the light transmitted through the different parallax images.
The coating on the ophthalmic lens may be a bandpass filter and/or a bandstop filter. The band-pass filter may be preconfigured with the band/wavelength of the color light (one or more of RGB) that the ophthalmic lens needs to transmit. For example, when the bandpass filter film is required to pass through a filter having a wavelength f 0 Can be configured to pass light in the sideband range [ f 1 ，f 2 ]Internal ray, where f 1 ≤f 0 ≤f 2 And attenuates other light rays having wavelengths outside this range. The bandpass filter film may be configured with one or more bandpass sideband ranges.
The sideband range of the band-stop filter may be preconfigured according to the wavelength/wavelength of the color light (one or both of RGB) that the ophthalmic lens needs to transmit. The band stop filter is capable of reflecting or attenuating light in a selected wavelength range and transmitting light in other wavelength ranges outside the selected wavelength range, such as a single sideband band stop filter or a double sideband band stop filter. For example, when the band-stop filter film is required to transmit a wavelength f 00 Can be provided with a band-stop filter to cut off the reflection f 00 Light of a wavelength other than f 00 Is a light of (2); or configuring cut-off reflection f of band-stop filter film 00 Light of a wavelength outside of one sideband range, e.g. sideband range [ f 01 ，f 02 ]Wherein f 01 ≤f 0 ≤f 2 The band-stop filter film cut-off reflection or attenuation wavelength is lower than f 01 Is higher than f 02 And pass through the sideband range [ f 01 ，f 02 ]Internal light rays.
According to the embodiment of the invention, according to the wavelength(s) corresponding to the light of the parallax images which needs to be transmitted by the left and right glasses lens respectively, the film coating on the lens can be configured to transmit the light with the corresponding wavelength, so that one glasses lens correspondingly transmits the light of one parallax image, and thus the light with different parallax images can be observed by the two glasses lens respectively, and the 3D display is formed. For example, one of the lenses transmits light of one or more wavelengths in R1G1B1, while the other lens transmits light of one or more wavelengths in R2G2B2, and finally the light transmitted through the two lenses at least includes light of three wavelength bands of RGB, so that the eyes corresponding to the two lenses can receive more abundant colors, and compared with the scheme that only one color can be received by a single eye in the prior art, the eyes can receive more full colors.
In one possible implementation manner, when the combination of the bands of the image light of the two parallax images has no overlapping band, if the first parallax image is only the R band and the second parallax image is only the G band and the B band, the setting mode is simple and fast, and the application range of the 3D glasses 20 is wide and the applicability is strong when the cut-off wavelength of the coating film on the glasses lens is set.
For example, the red light corresponds to a wavelength range of [622nm,750nm ], the green light corresponds to a wavelength range of [492nm,577nm ], and the blue light corresponds to a wavelength range of [435nm,450nm ]. If the coating film of the left glasses in the left and right glasses is configured to transmit R-band, such as the configuration sideband range is [622nm,750nm ], and the coating film on the right glasses lens is configured to transmit "blue+green" coating film, such as the configuration sideband range is [435nm,577nm ], so that the left eye can transmit red light, the right eye transmits blue and green light, and at this time, the schematic diagram of the parallax image transmitted by the coating film on the 3D glasses 20 is shown in fig. 2B.
In another possible embodiment, when the wavelength bands of the image light of the two parallax images are combined with overlapping wavelength bands, light of wavelengths through which the plating film on each of the ophthalmic lenses is able to be correspondingly set according to the wavelength of the light of each parallax image, for example, for the aforementioned (1) th and (2) th wavelength band combinations, wavelengths through which the plating film on the left (or right) ophthalmic lens is able to be correspondingly set according to the plurality of wavelengths of the light in the first parallax image of the two parallax images, and wavelengths through which the plating film on the right (or left) ophthalmic lens is correspondingly set according to the plurality of wavelengths of the image light of the second parallax image, and the plating films on the two ophthalmic lenses are correspondingly transmitted at different wavelengths, respectively. For example, one of the glasses lenses is correspondingly transparent to three light with wavelengths of R1, G1 and B1, and the other glasses lens is correspondingly transparent to three light with wavelengths of R2, G2 and B2, so that the left eye and the right eye of a person can respectively observe three colors in each parallax image, thereby avoiding the color deficiency of the parallax images in the 3D display process and improving the authenticity of the 3D effect.
In the embodiment of the present invention, when the coating films on the left and right eyes in the 3D glasses 20 are configured, different glasses lenses can be configured to pass through light with different wavelengths according to the band combinations of the two parallax images, so that one glasses lens can always transmit light with at least one wavelength (such as red light with a first wavelength) in the mixed light beam of the two parallax images, the other glasses lens can always transmit light with at least two bands (such as blue light+green light, or blue light+green light+red light with a second wavelength) in the three bands of RGB in the mixed light beam, and finally the transmitted light includes light with the three bands of RGB. The coating on each lens may be the same or different, e.g., the coating on both lens portions may be bandpass filters (or bandstop filters), or one may be bandpass filters and the other may be bandstop filters. Of course, in practical application, other devices having functions corresponding to the above-mentioned coating films may be used, and the device selected for the coating films on the left and right glasses lenses is not particularly limited in the embodiment of the present invention, as long as the coating films on the left and right glasses lenses in the 3D glasses 20 can respectively transmit light with different wavelengths of the two parallax images, so that the human eyes can receive light with at least three wavebands of RGB in the two parallax images to form a 3D effect.
Through the configuration of the light transmission wavelength of the coating film on the glasses lens of the 3D glasses 20 in the projection display system, the two glasses lens can respectively transmit the light with different wavelengths, and at the same time, the human eye can receive the light with three RGB wave bands through the two glasses lens, compared with the existing blue-red 3D projection, the three-dimensional projection display system has richer colors, the 3D display effect of the projection display system can be enhanced, and the 3D experience effect of a user can be improved.
In addition, the projection module 10 in the projection display system is configured to output mixed light beams with different wavelengths of different parallax images, so that colors in the parallax images have clear differences. The red and blue colors adopted by different movies at present are actually different, for example, yellow, green, cyan, magenta and the like are common, and ghost images can occur if the color is slightly different and red is not filtered or blue is not filtered, so that the embodiment of the invention distinguishes the light of different parallax images according to the wavelength, and the coating film on the spectacle lens corresponding to the parallax images is configured to transmit the light with specific wavelength of the corresponding parallax image, so that the different eyes receive the light of different parallax images, and the accuracy of transmitting the image light is improved.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
in an embodiment of the invention, a projection display system comprises a projection module and 3D glasses matched with the projection module. The projection module comprises an input light source and a display unit, wherein the input light source comprises at least one group of light sources, each group of light sources outputs light with at least one wavelength, the display unit receives the light output by the input light source and then modulates and emits image light of two different parallax images at the same time, the wave band combination corresponding to the image light of the two parallax images at least comprises R, G, B wave bands, and further, the 3D glasses receive the image light of the two parallax images, so that 3D display can be realized by being matched with the projection module; one of the left and right glasses lenses of the 3D glasses receives image light of a first parallax image of the two parallax images, the other glasses lens receives image light of a second parallax image of the two parallax images, namely the left and right glasses lenses can respectively receive the two parallax images to form 3D display, so that eyes can receive light of at least three colors of RGB in real time, the colors of display contents are enriched for users to watch, and the projection display effect is improved.
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (7)
1. A projection display system, comprising:
the projection device comprises an input light source and a display unit, wherein the input light source comprises at least one group of light sources, each group of light sources at least comprises R, G, B light emitting units, each light emitting unit is a monochromatic laser and comprises a plurality of light emitters emitting different wavelengths, each light emitting unit emits light with different wavelengths in the same wave band, each group of light sources at least outputs light with at least one wavelength corresponding to at least one wave band in R, G, B wave bands, the display unit receives the light output by the input light source and simultaneously modulates image light emitting two different parallax images according to different wave bands in a display period of each frame of projection picture, a first parallax image in the two different parallax images at least comprises light with at least one wave band in R, G, B wave bands, a second parallax image in the two different parallax images at least comprises light with at least two wave bands in R, G, B wave bands, the wave band combination corresponding to the image light of the two parallax images at least comprises R, G, B wave bands, and the wave bands corresponding to the image light of the two parallax images are different from each other;
3D glasses for receiving the image light of the two parallax images from the projection device and realizing 3D display in cooperation with the projection device; wherein one of the left and right glasses lenses of the 3D glasses receives image light of a first parallax image of the two parallax images, and the other glasses lens receives image light of a second parallax image of the two parallax images.
2. The projection display system of claim 1, wherein the display unit is a fiber scanning unit, the fiber scanner in the fiber scanning unit includes at least one scanning fiber corresponding to the input light source, one scanning fiber is correspondingly coupled into light output by at least one group of light sources, and the fiber scanning unit scans light exiting two parallax images through the at least one scanning fiber.
3. The projection display system of claim 1 or 2, wherein when the input light source includes a plurality of sets of light sources, the light emitting units of the same wavelength band in the plurality of sets of light sources are configured to emit light of different wavelengths.
4. A projection display system according to claim 3, wherein the left and right glasses of the 3D glasses are respectively provided with a coating film for transmitting light of at least one wavelength of the received light, and one of the left and right glasses after the coating film can receive the image light of the first parallax image and the other glasses can receive the image light of the second parallax image.
5. The projection display system of claim 4, wherein the coating on the left and right lenses of the 3D glasses is a bandpass filter and/or a bandstop filter.
6. The projection module is characterized by comprising an input light source and a display unit corresponding to the input light source, wherein the input light source comprises at least one group of light sources, each group of light sources at least comprises R, G, B light emitting units, each light emitting unit is a monochromatic laser and comprises a plurality of light emitters emitting light with different wavelengths, each light emitting unit emits light with different wavelengths in the same wave band, each group of light sources outputs light with at least one wavelength corresponding to at least one wave band in R, G, B, the display unit simultaneously modulates image light emitting two different parallax images according to different wave bands after receiving the light output by the input light source in a display period of each frame of projection picture, wherein a first parallax image in the two different parallax images at least comprises light with at least one wave band in R, G, B three wave bands, a second parallax image in the two different parallax images at least comprises light with at least two wave bands in R, G, B, so that the wave band combination of the image light of the two parallax images at least comprises R, G, B and the image light with the two different wave bands corresponding to each other.
7. The projection module of claim 6, wherein the display unit is a fiber scanning unit, the fiber scanner in the fiber scanning unit includes at least one scanning fiber corresponding to the input light source, one scanning fiber is correspondingly coupled into the light output by at least one group of light sources, and the fiber scanning unit scans the light exiting two parallax images through the at least one scanning fiber.
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