CN111323936B - Projection display system, 3D glasses and projection method - Google Patents
Projection display system, 3D glasses and projection method Download PDFInfo
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Abstract
The invention discloses a projection display system, 3D glasses and a projection method, which are used for solving the technical problem of poor projection display effect in the prior art. The projection display system includes: the projection module is used for projecting light of two different parallax images simultaneously through the display module, each frame of projection picture of each parallax image corresponds to at least two sub-images in a display time period, and the sub-images of the different parallax images correspond to different color channels at the same moment; the 3D glasses are provided with light processing devices and are used for respectively adjusting the colors of light transmitted by the left and right glasses lenses, and the left and right glasses lenses respectively transmit light with different colors at the same time; when the projection module displays the light of the sub-images corresponding to the two parallax images according to the preset color playing time sequence, the left and right spectacle lenses respectively transmit the light of the color corresponding to the corresponding color playing time sequence in the display time period, and the left and right spectacle lenses are matched with the projection module to realize 3D display.
Description
Technical Field
The invention relates to the technical field of projection display, in particular to a projection display system, 3D glasses and a projection method.
Background
The red and blue movies are different images that are obtained by filtering different colors through different colored glasses. The red-blue 3D film is a common left-eye red lens and a right-eye blue lens, and the pictures are red-blue staggered, so that the left-eye lens can filter out the blue content of the pictures and only see the red part, the right-eye lens can filter out the red, and the left eye and the right eye see different pictures to generate stereoscopic impression.
The red and blue 3D film display technology adopts a left projector and a right projector, images shot by two different parallaxes are respectively projected by two different colors of red and blue, a user wears color difference type 3D glasses (generally, the left eye and the right eye are red and blue), a red lens penetrates through red light, and a blue lens penetrates through blue light, so that the left eye of the user sees the red image (shooting parallax 1), the right eye sees the blue image (shooting parallax 2), and the two images generate a 3D effect through the calculation of the brain. 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 presenting effect is poor, even distortion is caused, and the user experience is low.
Disclosure of Invention
The invention aims to provide a projection display system, 3D glasses and a projection method, which are used for solving the technical problem of poor display projection effect in the prior art.
To achieve the above object, in a first aspect, the present invention provides a projection display system comprising:
the projection module comprises a light source and a display module, wherein the light source outputs light at least comprising R, G, B three colors, the display module receives the light output by the light source and then simultaneously projects image light of two different parallax images, each frame of projection image of each parallax image corresponds to at least two sub-images in a display time interval, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and at the same time, the sub-images of the projection images of the different parallax images correspond to different color channels;
the 3D glasses comprise a left lens and a right lens, and are used for receiving the image light of the two parallax images from the projection module through the left lens and the right lens, the 3D glasses are internally provided with a light processing device, and the light processing device is used for respectively adjusting the colors of the light rays correspondingly transmitted by the left lens and the right lens, and the left lens and the right lens respectively transmit the light with different colors at the same moment;
and the controller is used for controlling the light processing device to respectively adjust the colors of the light rays acted by the left and right glasses lenses according to the preset color playing time sequence, controlling the left and right glasses lenses of the 3D glasses to respectively transmit the light rays of the colors corresponding to the corresponding color playing time sequence in the display time period, and matching with the projection module to realize 3D display.
Optionally, the display module is an optical fiber scanner including at least one scanning optical fiber, each scanning optical fiber correspondingly inputs light of at least one parallax image, the optical fiber scanner scans the two parallax images through the at least one scanning optical fiber, and sequentially emits light corresponding to the at least two sub-images according to a preset color playing time sequence within a display time period of each frame of projection image.
Optionally, the light processing device comprises a light transmissive filtering optical element and a driving member;
the light transmitting and filtering optical element is arranged in the left spectacle lens and the right spectacle lens and comprises at least two monochromatic light transmitting sheets with different colors, and the monochromatic light transmitting sheets are used for transmitting light rays with one of three colors corresponding to the picture to be projected;
and the driving component is used for driving the light-transmitting and light-filtering optical element to switch the optical element at least once according to the preset color playing time sequence according to the instruction of the controller in the display time interval, so as to change the light rays of the color acted by the light-transmitting and light-filtering optical element, and the light-transmitting and light-filtering optical elements in the left spectacle lens and the right spectacle lens act on the light rays of different colors respectively at the same moment.
Optionally, the light-transmitting and light-filtering optical element further includes at least one optical filter, the optical filter and the monochromatic light-transmitting sheet are respectively located on different glasses lenses in the 3D glasses, and the optical filter is configured to filter one color light of three colors of light corresponding to the projection image and transmit the other colors of light.
Optionally, the light-transmitting and light-filtering optical element is in a disc shape or a strip shape, and the size of the monochromatic light-transmitting sheet or the size of the light-filtering sheet in the light-transmitting and light-filtering optical element is greater than or equal to that of the spectacle lens.
In a second aspect, an embodiment of the present invention provides 3D glasses, including:
left and right eyeglass lenses for receiving projection light corresponding to different parallax images;
the optical processing device is used for respectively adjusting the colors of the light rays correspondingly transmitted by the left and right spectacle lenses;
and the controller is used for controlling the optical processing device to respectively adjust the colors of the light rays transmitted by the left and right spectacle lenses in the 3D glasses according to the color playing time sequence corresponding to the projection picture in the display time period, controlling the left and right spectacle lenses to respectively transmit the light rays with the colors corresponding to the color playing time sequence of the corresponding parallax image, and controlling the left and right spectacle lenses to transmit light with different colors at the same time.
Optionally, the light processing device comprises a light transmissive filtering optical element and a driving member;
the light-transmitting and light-filtering optical element comprises at least two monochromatic light-transmitting sheets with different colors, and the monochromatic light-transmitting sheets are used for transmitting light of one of three colors corresponding to the picture to be projected;
the driving component is connected with the controller and used for driving the light-transmitting and light-filtering optical element to perform at least one time of switching of the optical element according to the color playing time sequence according to the instruction of the controller in the display time interval, so that the light of the color acted by the light-transmitting and light-filtering optical element is changed, and the light-transmitting and light-filtering optical elements in the left spectacle lens and the right spectacle lens respectively act on the light of different colors at the same moment.
Optionally, the light-transmitting and light-filtering optical element further includes at least one optical filter, the optical filter and the monochromatic light-transmitting sheet are respectively located at different positions in the left and right spectacle lenses, and the optical filter is configured to filter one of three colors of light corresponding to the projection image and transmit the other colors of light.
Optionally, the optical filters or monochromatic transmission plates included in the light transmission and filtering optical element are spliced into a disc shape or a strip shape, and the size of each optical element in the disc shape of the light transmission and filtering optical element is greater than or equal to the size of the lens.
In a third aspect, an embodiment of the present invention provides a projection module, including a light source and a display module, where the light source outputs light including at least R, G, B three colors, the display module receives the light output by the light source and then projects image light of two different parallax images, each frame of projection image of each parallax image corresponds to at least two sub-images in a display time period, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and at the same time, the sub-images of the projection images of different parallax images correspond to different color channels.
Optionally, the display module is an optical fiber scanning module, an optical fiber scanner in the optical fiber scanning module includes at least one scanning optical fiber, and one scanning optical fiber correspondingly inputs light of at least one parallax image, and the optical fiber scanning module scans the two parallax images through the at least one scanning optical fiber and sequentially emits light corresponding to the at least two sub-images according to a preset color playing time sequence within a display time period of each frame of projection image.
In a fourth aspect, an embodiment of the present invention provides a projection method applied to a projection display system, including:
simultaneously projecting light of two images with different parallaxes to a curtain according to a preset frame rate; each frame of projection picture of each parallax image corresponds to at least two sub-images in a display time interval, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and at the same moment, the sub-images of the projection pictures of different parallax images correspond to different color channels;
controlling light rays reflected by the curtain and acted by light processing devices in left and right spectacle lenses in the 3D glasses according to a preset color playing time sequence, and respectively transmitting at least two colors of light rays of at least two sub-images in corresponding parallax images through the left and right spectacle lenses in the display time period; the light processing device is used for transmitting or filtering at least one color light ray in the light rays reflected by the curtain.
Optionally, the light processing device comprises at least two monochromatic filters, or the light processing device comprises at least one monochromatic filter and at least one light-transmitting sheet; the light-transmitting sheet is used for filtering one of the three colors of light rays corresponding to the picture to be projected and transmitting the other colors of light rays;
the control light that is acted on by the light processing device in left and right lens in 3D glasses and is reflected through the curtain includes:
and controlling a light processor device in the 3D glasses to switch the lenses, adjusting the light rays of the colors acted by the light-transmitting sheets or the monochromatic filters corresponding to the left and right glasses lenses, and respectively acting on the light rays of different colors by the light-transmitting and light-filtering optical elements in the left and right glasses lenses at the same moment.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
in the embodiment of the invention, the display module of the projection module in the projection display system simultaneously emits light of different parallax images according to a preset frame rate, the display module modulates and sequentially displays at least two sub-images corresponding to each frame of projection image according to a preset color playing time sequence in the display time period of each frame of projection image, and at the same time, the sub-images of the projection images of different parallax images correspond to different color channels, further, a light processing device arranged in the 3D glasses receives light reflected by the curtain and can transmit light of at least one color in the light received by the 3D glasses, further, a controller can control a light processor device in the 3D glasses to project color light corresponding to the color playing time sequence in the display time period according to the color playing time sequence, so that the 3D glasses are matched with the first projector and the second projector to realize 3D display, the 3D glasses can display more colors according to the color playing time sequence in the display time period of each frame of image, the colors of projection pictures are enriched, and the projection display effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise:
FIG. 1 is a schematic diagram of a projection display system according to an embodiment of the present invention;
FIGS. 2A-2B are schematic structural diagrams of a light-transmitting and light-filtering optical element according to an embodiment of the invention;
FIGS. 3A-3B are diagrams of combinations of colors of light transmitted by the left and right eyes during a display period according to an embodiment of the present invention;
FIG. 4 is a flow chart of a projection method in an embodiment of the invention;
fig. 5 is a schematic structural diagram of a 3D glasses according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a projection display system according to an embodiment of the present invention, where the projection display system includes a projection module 10 and 3D glasses 20. The projection module 10 includes a light source 101 and a display module 102, wherein the light source 101 is used for outputting light with at least R, G, B three colors; the display module 102 projects light of two different parallax images after receiving light output by the light source 101, each frame of projection image of each parallax image corresponds to at least two sub-images in a display time period, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and at the same time, the sub-images of the projection images of the different parallax images correspond to different color channels; the 3D glasses 20 are provided with a light processing device 201 for adjusting the color of the light rays transmitted by the left and right glasses lenses of the 3D glasses 20, respectively, so that the left and right glasses lenses transmit light of different colors at the same time. Therefore, in the projection display system, when the projection module displays the light of the sub-images corresponding to the two parallax images according to the preset color playing time sequence, the left and right glasses respectively transmit the light of the color corresponding to the corresponding color playing time sequence in the display time period, and the projection display system can be matched with the projection module to realize 3D display.
Optionally, the projection display system may further include a controller 30, which is shown in fig. 1, where the controller 30 may be configured to control the light processing device to adjust colors of light applied by the left and right glasses respectively according to a preset color playing time sequence, so that the left and right glasses of the 3D glasses respectively transmit light of a color corresponding to the corresponding color playing time sequence in the display time period. In practical applications, the controller 30 in the projection display system may be independent, or may be integrated in the projection module 10 or the 3D glasses 20, which is not particularly limited in this embodiment of the present invention.
It should be noted that fig. 1 is only an example of the projection display system provided by 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 curtain or a projection screen), and the like, which are not shown in fig. 1.
In the embodiment of the present invention, when the projection display system is used to project an image, the display module 102 in the projection module 10 receives the light including the three RGB colors output by the light source 101 and then emits two different parallax images, such as a mixed light of the first parallax image and the second parallax image, where the two parallax images are images obtained by shooting the same image with different parallaxes. The projection module 10 may project at least two sub-images corresponding to each frame of projection image of each parallax image according to a preset color playing time sequence corresponding to each parallax image in the display time period of each frame of projection image; at the same time, the sub-images of the projection images of different parallax images correspond to different color channel combinations, and further, the controller 30 in the projection display system controls the light processing device 201 in the 3D glasses 20 to transmit or filter at least one color light of the light reaching the 3D glasses 20 in the display time period according to the preset color playing time sequence, so as to realize the projection of the light of the color corresponding to the color playing time sequence in the display time period, enrich the colors viewed by the user, and improve the projection display effect.
In order to make those skilled in the art understand the technical solutions provided by the embodiments of the present invention, the following describes each component of the projection display system provided by the embodiments of the present invention in detail.
The light source 101 in the projection module 10 may include at least one group of laser light sources, each group of laser light sources includes at least three RGB light emitting units, one of the light emitting units may include a plurality of light emitters, for example, the R light emitting unit may be formed by mixing two light emitters R' and R ″, and when each light emitting unit includes a plurality of light emitters, light energy may be increased.
In practical applications, each group of laser light sources includes R, G, B three monochromatic lasers (R, G, B refers to red, green and blue lasers, respectively), and the light source 101 can output image lights of two different parallax images through at least one group of laser light sources.
The display module 102 in the projection module 10 receives the light output from the light source 101, and then scans and emits the light of the image to be displayed. The display module 102 may be provided with a corresponding modulator, and when the image lights of two different parallax images are emitted, the display module 102 may control the modulator to modulate and emit the light of each parallax image according to a preset color playing timing sequence in a display period of each frame of the projection image, and at least two sub-images of each parallax image respectively correspond to the light emitted by at least one color channel of the three RGB color channels. For example, the sub-image may correspond to a grayscale image of any one of the three color channels RGB, or the sub-image may correspond to an image of any two of the three color channels RGB, such as an image containing color information of two channels R and G.
As an alternative embodiment, one or more projectors may be configured in the projection module 10, and are used to project the light of the two parallax images modulated by the display module 102, that is, the image including three colors of red (R), green (G), and blue (B), and each projector emits light of any one or more of the colors of RGB. For example, when the projection module 10 emits the image lights of the first parallax image and the second parallax image, two projectors may be used to project the image lights of different parallax images, or one projector may be used to project the image lights of two parallax images at the same time.
In practical applications, the display module 102 may be a fiber scanning module, a MEMS scanning or DMD chip, or the like. As an optional embodiment, when the display module is an optical fiber scanner, if the optical fiber scanner includes at least one scanning optical fiber, and one scanning optical fiber correspondingly inputs light of at least one parallax image, after the light source 101 inputs the optical fiber scanner, the optical fiber scanner may scan two parallax images through the at least one scanning optical fiber, and sequentially emit light corresponding to at least two sub-images according to a preset color playing time sequence within a display time period of each frame of the projection image. At this time, only one projector may be configured in the projection module 10 to project the scanning light of the two parallax images emitted from at least one scanning optical fiber in the display module 102, so as to save the projection cost.
Alternatively, as an alternative embodiment, the display module 10 may adopt a conventional MEMS scanning or DLP DMD chip manner, and at least two projectors are configured in the projection module 10 to project the light of two parallax images respectively.
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, and the like, so that three images with different colors of red, blue, and green are superimposed into one picture, and then the picture is input to one projector through modulation and projected, and each pixel point output by the laser light source corresponding to the one projector carries pixel information of two images with different viewing fields.
In the embodiment of the present invention, if the display module 10 projects two parallax images through a plurality of projectors, the plurality of projectors have the same and synchronous frame rate, the projectors respectively project sub-images corresponding to the parallax images through different color channels within a display time period of a projection image according to a preset color playing time sequence corresponding to the corresponding parallax images, and the plurality of projectors project the projection image through different color channels at the same time.
The display time period of the projection picture is determined by the frame rate corresponding to the projector, for example, the frame rate is 30fps, that is, the graphics processor can refresh 20 times per second, and the display of each frame of image is about 0.05 s. In the display section, each projector controls different color channels to synchronously project images according to the color playing time sequence corresponding to the parallax images to be projected. For example, in the display period, the display module 102 controls the color channel to project the parallax image 1 according to the timing of "red-green-blue", and simultaneously controls the color channel to project the parallax image 2 according to the timing of "green-red-blue". That is, in the display period of each frame of display image, the display module 102 increases the number of sub-images to be displayed, increases the number of frames in the display period, and enriches the colors of the display image.
If the projection module 10 includes a plurality of projectors, the plurality of projectors project different colors of the same or different parallax images at the same time, i.e., output color light. For example, if the display module 102 corresponds to two projectors, the projector 1 projects red light and green light in the first parallax image, the corresponding color channel is (R1, G1, 0), the projector 2 projects blue light in the second parallax image, and the corresponding color channel is (0, 0, B2); alternatively, if the display module 102 corresponds to three projectors, the projector 1 projects red light (R1, 0, 0) in the first parallax image, the projector 2 projects green light (0, G2, 0) in the second parallax image, and the projector 3 projects blue light (0, 0, B1) in the first parallax image or blue light (0, 0, B2) in the second parallax image, so that light with rich colors can be projected at the same time.
In one possible embodiment, the projection display system may further include a projection screen, such as a projection screen or projection screen, which may be used in conjunction with the projection module 10 or disposed in the projection module 109. In the projection process, the projection module 10 may project the light of the two parallax images onto a projection screen, and emit the image light of the two parallax images through the projection screen, for example, by reflection of the projection screen or refraction of the projection screen, so as to emit the image light into the 3D glasses 20.
The 3D glasses 20 respectively transmit or filter at least one color of light among the light received by the 3D glasses 20 through the light processor devices disposed at the left and right eye positions, so as to realize 3D display in cooperation with the projection module 10.
In practical applications, the light processing device 201 may be a part of left and right glasses lenses in the 3D glasses 20, and the light processing device 201 may include a light transmission and filtering optical element and a driving component. Among them, the light transmissive filtering optical element may employ a plurality of monochromatic filters or light transmissive sheets corresponding to colors projected by the projector, which will be described in detail later. The driving means may be used to adjust the lenses (monochromatic filters or transmission plates) in the transmission filter optical element to change the color of light transmitted by the left and right eyeglass lenses in the 3D glasses 20. In the embodiment of the present invention, the light-transmitting and filtering optical element may be located in the left and right glasses lenses, or may be directly used as the glasses lenses of the 3D glasses 20.
Specifically, the monochrome light-transmitting sheet may be used to transmit light of one color of light (e.g., RGB light) corresponding to a picture to be projected, that is, light of a small range of wavelength bands that can pass through, and reflect other bands that are not desired to pass through. In practical applications, the monochromatic light transmission sheets include an infrared light transmission sheet, a green light transmission sheet, a blue light transmission sheet and the like. The light reaches the human eyes through the monochromatic light-transmitting sheet, so that the human eyes can receive the saturated light with a certain color.
As an alternative embodiment, the light transmissive filter optical element may comprise at least two monochromatic light transmissive sheets of different colors, which may correspond to the color of the light emitted by the projector. For example, if the projector emits light of two colors, such as red light and green light, the light transmission filter optical element may include light transmission plates of the corresponding two colors or more, for example, may include only an infrared light transmission plate and a green light transmission plate, or may further include a blue light transmission plate.
In practical applications, at least two single-color transparent sheets in the light transmission and filtering optical element can be designed to be a rotatable disk shape or a movable strip shape, so that the light transmission and filtering optical element can be driven to rotate by driving components including a motor, a gear and the like, and the transparent sheets corresponding to the left and right eyeglass lenses in the 3D glasses 20 are changed to correspond to the color playing time sequence.
As shown in fig. 2A, if the light-transmitting and filtering optical element is a monochromatic light-transmitting sheet, a plurality of monochromatic light-transmitting sheets can be designed into a rotatable light-transmitting sheet disk, that is, the left and right glasses lens respectively correspond to a light-transmitting sheet disk, and the color lights acting on the light-transmitting sheets corresponding to the left and right glasses lens at the same time are different, each light-transmitting sheet disk can be formed by combining three fan-shaped light-transmitting sheets with different colors, and the light-transmitting sheet disk can be driven to rotate by components such as a motor and a gear in other modes. In fig. 2A, if the light-transmitting disc is driven to rotate counterclockwise, the colors of light corresponding to the left and right glasses lenses of the 3D glasses 20 include the following three combinations:
left red and right blue;
② left green and right red;
③ left blue and right green.
The left eye of the human eye can sequentially receive the images of the three colors of red, green and blue within the display time; correspondingly, the right eye receives images of three colors of blue, red and green, so that the image color received by the eyes of people is more full in presenting effect, and the brain of a user can calculate the colors of the received images with different parallaxes to generate a 3D effect.
Alternatively, as shown in fig. 2B, the light-transmitting and filtering optical element may be configured to be in a strip shape, the left and right glasses lens correspond to one light-transmitting and filtering optical element, the light-transmitting optical element at least includes three monochromatic light-transmitting strips of RGB, the strip-shaped light-transmitting strips may be disposed in the left and right glasses lens along a horizontal direction or a vertical direction, and the vertical direction is taken as an example in fig. 2B. The both ends of bar printing opacity piece can set up to the spool structure, can adjust the printing opacity piece that each lens corresponds corresponding color through drive spools such as motor in the adjustment process. Preferably, the size of each optical element in the disc shape or the strip shape formed by the light-transmitting and light-filtering optical elements may be greater than or equal to the size of the spectacle lens, so as to process the light received by the 3D spectacles 20, and improve the control effect of filtering or transmitting light of different colors.
In another alternative embodiment, the light transmissive filtering optical element may further include one or more filters. The optical filter is used for filtering one color light ray of the color light rays corresponding to the projection picture received by the 3D glasses 20, and transmitting the other color light rays. Different filters correspondingly filter different colors, and the common filters comprise an infrared filter, a green light filter and a blue light filter; the infrared filter is used for filtering red light rays in the received color light rays and transmitting green and blue light rays, and similarly, the filter principles of the filters of the other colors are the same. Correspondingly, the optical filter can also be designed into a disc or strip shape, the design mode is similar to that of a monochromatic light-transmitting piece, and the description is omitted here.
Therefore, in the embodiment of the present invention, the same or different optical elements may be used for the light-transmitting and filtering optical elements corresponding to the left and right glasses lenses of the 3D glasses 20. For example, the light-transmitting and filtering optical elements in the left and right spectacle lenses are all composed of three monochromatic light-transmitting sheets (such as light-transmitting sheet discs shown in fig. 2A) of red, blue and green; or the light transmitting and filtering optical element of the left-eye spectacle lens comprises a monochromatic light transmitting sheet with three colors, and the light transmitting and filtering optical element of the right-eye spectacle lens comprises a filter disc consisting of a plurality of filters; or, the light transmitting and filtering optical element of the left eye spectacle lens comprises a monochromatic light transmitting sheet of three colors, and the right eye spectacle lens simultaneously comprises the monochromatic light transmitting sheet and the optical filter. It should be noted that the arrangement of the optical elements in the left and right eyeglass lenses listed in the embodiments of the present invention is merely an example, and the arrangement of the left and right eyes may be interchanged in practical use.
In practical applications, the structures and the colors of the light rays applied by the light-transmitting and filtering optical elements respectively corresponding to the left and right eyes of the 3D glasses 20 may be set according to practical requirements, which is not specifically limited in the embodiment of the present invention.
No matter what kind of structure is adopted by the light-transmitting and light-filtering optical element, in each frame of image display period, the controller 30 in the projection display system can respectively adjust the optical elements corresponding to the left and right glasses lenses according to the color playing time sequence corresponding to the image, and control the left and right glasses lenses of the 3D glasses 20 to respectively transmit the light rays of the color corresponding to the corresponding color playing time sequence in the display period, so that the time sequences of the light correspondingly transmitted by the left and right glasses lenses of the 3D glasses 20 are the same as the color playing time sequence, the color of the light rays received by the user in the display period corresponding to each frame of image is enriched, and the 3D glasses 20 is matched with the first projector 101 and the second projector 102 to realize 3D display.
For example, in a frame of projection picture, the color display timing sequence of the first parallax image is: red → blue → green, the color display timing sequence of the second parallax image is: blue → green → red. If the light-transmitting and filtering optical elements corresponding to the left and right eyes adopt the structure shown in fig. 2A, in the display period T of the frame image, the controller 30 controls the driving component, such as a motor, to rotate the light-transmitting disc to switch the monochromatic light-transmitting discs corresponding to the left and right lenses in the 3D glasses 20, so that the color of the monochromatic light-transmitting disc corresponding to the left lens is switched and changed according to the color playing timing sequence corresponding to the first parallax image, and the color of the monochromatic light-transmitting disc corresponding to the right lens is switched and changed according to the color playing timing sequence corresponding to the second parallax image, as shown in fig. 3A.
Therefore, when the projection display system presents a frame of pictures superimposed by three images of different colors of red, green and blue, if the frame of pictures stays for a time T, the left and right glasses of the 3D glasses 20 worn by the user generate two times of color switching of the filters respectively during the time T (for example, as shown in fig. 3A, the left eye: red → blue, blue → green; the right eye: blue → green, green → red), so that the two eyes respectively feel the pictures of three colors of red, green and blue during the time T. That is, in the prior art, one frame of picture is displayed, and both eyes of a user receive light of one color respectively.
Alternatively, if the light transmissive filter optical element for the left and right eyes includes a light transmissive plate disc and a disc formed of filters, for example, a light transmissive plate disc for the left eye corresponding to three colors (RGB) and a filter disc formed of a plurality of filters for the right eye corresponding to three colors (RGB). If the color playing time sequence of the first parallax image is: red → blue → green, the color display timing sequence of the second parallax image is: cyan → green red → red blue.
Then, during the time T, the left and right glasses lenses of the 3D glasses 20 worn by the user are respectively subjected to two color switching. As shown in fig. 3B, the left eye (corresponding to the color play timing of the first parallax image) transmits: red → blue, blue → green; right eye (corresponding to the color play timing of the second parallax image) transmission: bluish green → green red, green red → red blue, so that the two eyes can feel the pictures of three colors of red, green and blue at each display moment in the time T. For example, in three time periods T1-T3 included in T, colors (R1, G2 and B2) are sensed in a time period T1, colors (R2, G1 and B2) are sensed at a time point T2, colors (R2, G2 and B1) are sensed at a time point T3, and a 3D effect can be generated by calculating the colors of received pictures with different parallaxes through the brain of a user.
Therefore, in the embodiment of the present invention, the display of the image color is matched by the switchable 3D glasses 20 provided with the light-transmitting and light-filtering optical element (optical filter/monochromatic light-transmitting sheet), so that the user can receive the image color for multiple times through different optical filters or monochromatic light-transmitting sheets in the display period of one frame of projection image, and compared with the case that only one color image can be received by a single eye in the prior art, the image color received by human eyes has a fuller presentation effect.
Based on the same inventive concept, fig. 4 provides a projection method, which can be applied to the projection display system of fig. 1 or a device including the projection display system to achieve a 3D display effect. The method comprises the following steps:
s11: the projection display system simultaneously projects two image lights with different parallaxes according to a preset frame rate; each frame of projection image of each parallax image corresponds to at least two sub-images in a display time interval, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and the sub-images of the projection images of different parallax images correspond to different color channels at the same moment.
In the embodiment of the present invention, the structure of the projection display system may refer to the structures shown in fig. 1 to 3B, which are not described herein again.
The projection display system can simultaneously project two images with different parallaxes through 1 or more projectors, and when the projectors are multiple, the projectors have the same and synchronous frame rate. When the projection display system projects two parallax images, the projection display system projects the corresponding parallax images onto a projection screen, such as a projection curtain or a projection screen, according to the corresponding color playing time sequence, the sub-images corresponding to the images are projected by adopting different color channels within the display time period of each frame of projection image, and the sub-images of the projection images of the different parallax images correspond to the different color channels at the same time.
S12: the projection display system controls the light rays acted by the light processing device 201 in the left and right glasses lenses in the 3D glasses 20 according to a preset color playing time sequence, and transmits the light rays of at least two colors of at least two sub-images in the corresponding parallax images through the left and right glasses lenses respectively in a display period; the light processing device 201 is configured to transmit or filter at least one color light of two image lights with different parallaxes.
In the embodiment of the present invention, the projection display system of the light processing device 201 corresponding to the left and right eyes of the 3D glasses 20 includes a light transmissive filter optical element and a driving component, wherein the light transmissive filter optical element is disposed in the left and right glasses lens, and includes at least two monochromatic light transmissive sheets with different colors, and the monochromatic light transmissive sheets are used for transmitting one color light of three colors corresponding to the picture to be projected. Alternatively, the light-transmitting and filtering optical element may further include a filter, i.e., the left and right eyes are formed by a monochromatic light-transmitting sheet and a filter respectively corresponding to the 3D glasses 20, and the structure can be referred to the above. The driving part can be used for driving the light-transmitting and light-filtering optical element to switch the optical element at least once according to the color playing time sequence in the display time period, light rays of the color acted by the light-transmitting and light-filtering optical element are changed, the light-transmitting and light-filtering optical elements in the left and right spectacle lenses act on light rays of different colors respectively at the same moment, the purpose that the light-transmitting and light-filtering optical element and the light-filtering optical element corresponding to the left and right spectacle lenses are adjusted according to the color playing time sequence in the display time period of the current frame are achieved, the optical elements corresponding to the left and right eyes are adjusted according to the color playing time sequence and received for multiple times through the different optical elements is achieved, the color of the image received by a user is enriched, and the image color display effect is more full.
In S12, when the projection display system changes the light emitted from the projection screen and acted on by the light processing device 201, the light processing device in the 3D glasses 20 may be controlled to switch the lenses by adjusting the optical elements in the light transmissive and filtering optical elements such as a motor, so as to adjust the light of the color acted on by the light transmissive plate or the monochromatic filter corresponding to the left and right glasses lenses, and at the same time, the light transmissive and filtering optical elements in the left and right glasses lenses act on the light of different colors respectively. For example, the color playback timing of the first parallax image output by the light source 101 is determined as: red → blue → green, the color display timing sequence of the second parallax image is: blue → green → red, the light correspondingly transmitted by the left and right glasses during the display period is controlled as shown in FIG. 3A.
The embodiments corresponding to fig. 1 to fig. 3B are also applicable to the projection method of the present embodiment, and a person skilled in the art can clearly know the implementation manner of the projection method in the present embodiment through the foregoing detailed description of the projection display system, and for the brevity of the description, the details are not repeated herein.
In the embodiment of the present invention, the projection display system may adjust the light processing device 201 according to the color playing time sequence corresponding to different parallax images output by the projector, so as to change the optical elements corresponding to the left and right eyes, respectively, thereby changing the color of the light applied (filtered or transmitted), achieving the purpose of receiving and transmitting the light corresponding to the color playing time sequence within the display time period of the picture by using different optical elements, enriching the color of the received light, and improving the projection display effect.
Based on the same inventive concept, the embodiment of the present invention further provides a pair of 3D glasses 20, as shown in fig. 5, the 3D glasses 20 includes a light processing device 201 and left and right glasses lenses 202, and optionally, the 3D glasses may further include a controller 203, which is also shown in fig. 5. The controller 203 is connected to the light processing device 201, the light processing device 201 includes a light-transmitting and filtering optical element 2011 and a driving component 2012, and the 3D glasses 20 can be used for the projection module 10 of the projection display system in fig. 1 to cooperate to realize 3D display. In practical applications, the controller 203 of the 3D glasses 20 may be shared with the projection display system.
Specifically, the left and right eye glasses 202 of the 3D glasses 20 may be used to receive projection light corresponding to different parallax images. The projection light may be light emitted after image light of different parallax images output by the projector reaches the projection screen, such as light reflected by the projection screen or light refracted by the projection screen, and the different parallax images have different color playing timings.
The light processing device 201 is used for adjusting the colors of the light rays correspondingly transmitted by the left and right spectacle lenses 202 respectively, and the light processing device 201 comprises a light transmitting and filtering optical element and a driving part; the light-transmitting and light-filtering optical element can adopt at least two monochromatic light-transmitting sheets with different colors, or the light-transmitting and light-filtering optical element can also adopt a monochromatic light-transmitting sheet and a light filter, and a plurality of monochromatic light-transmitting sheets and light filters can be combined or respectively form a disc/strip disc which respectively corresponds to the left eye and the right eye; please refer to fig. 2A and fig. 2B and related descriptions for the structure and corresponding color combination of the light-transmitting and filtering optical element, which are not described herein again.
The driving part may be connected with the controller 203 through a wired or wireless connection, such as bluetooth, wireless transmission of control signals, and the like. In the display period, the driving component may drive the light-transmitting and light-filtering optical element to perform at least one switching of the optical element according to the color playing timing sequence of the parallax image corresponding to the left and right eyes respectively according to the instruction of the controller 203, so as to change the color light acted by the light-transmitting and light-filtering optical element, and at the same time, the light-transmitting and light-filtering optical elements in the left and right glasses lenses 202 act on the light with different colors respectively.
The controller 203 is configured to control the light processing device 201 to adjust the color of the light transmitted by the left and right glasses lenses 202 in the 3D glasses 20 respectively according to the color playing timing sequence corresponding to the projection image in the display time period, control the left and right glasses lenses 202 to transmit the light of the color corresponding to the color playing timing sequence of the corresponding parallax image respectively, and control the left and right glasses lenses 202 to transmit the light of different colors at the same time. For a specific adjustment manner and color combinations of the lenses corresponding to left and right eyes, please refer to fig. 3A and 3B and related descriptions, which are not repeated herein.
In the embodiment of the present invention, the light processing device 201 disposed in the 3D glasses 20 can convert the optical elements corresponding to the left and right eyes, so as to selectively transmit the colors of the received light rays of different parallax images, and further form a 3D effect through the effect of the brain of the user on the light rays of different parallax colors, so that the 3D glasses 20 can select the light-transmitting filter optical element transmitting the corresponding color according to the color playing time sequence of the corresponding image for receiving, and realize that the projected light rays are received by different optical elements for multiple times in the display time period, so that the color rendering effect of the image received by the human eyes is fuller.
The embodiments corresponding to fig. 1 to fig. 4 are also applicable to the 3D glasses 20 of the present embodiment, and a person skilled in the art can clearly know the implementation of the projection method in the present embodiment through the foregoing detailed description of the near-eye display device, and for the brevity of the description, the details are not repeated herein.
Based on the same inventive concept, an embodiment of the present invention further provides a projection module 10, where the projection module 10 includes a light source 101 and a corresponding display module 102, the light source 101 may output light including at least R, G, B three colors, the display module 102 receives the light output by the light source 101 and then projects image light of two different parallax images, each frame of projection image of each parallax image corresponds to at least two sub-images in a display time period, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and at the same time, the sub-images of the projection images of different parallax images correspond to different color channels.
In the embodiment of the present invention, the light source 101 may be a laser light source or other light sources such as a light emitting diode LED; each light source 101 includes at least R, G, B three kinds of light emitting units, wherein one kind of light emitting unit may include a plurality of light emitters, for example, the R light emitting unit may be formed by mixing two light emitters R' and R ″, and when each kind of light emitting unit includes a plurality of light emitters, light energy may be increased.
After light emitted by the light source 101 enters the display module 102, the display module 102 scans an image to be displayed and emits light of different parallax images (such as color images). The light of different parallax images can enter corresponding projectors respectively, for example, the light beam corresponding to the first parallax image enters the projector 1, and the light beam corresponding to the second parallax image enters the projector 2; or, if the display module 102 is a fiber scanner, the mixed light beam of the two parallax images can be projected through one projector; or, the first parallax image and the second parallax image may be processed in advance, so that images with three different colors of red, green and blue are superimposed to form a picture, and then the output is modulated by using a projector, and each pixel point output by the projector carries pixel information of two different view field images.
When the display module 102 projects two parallax images, the display module can emit light beams of at least two sub-images corresponding to each parallax image in the display time period of each frame of the projection image according to a preset color playing time sequence, and even can project the light beams through a corresponding projector (such as an optical fiber scanner). For example, when the projector 1 corresponding to the display module 102 projects an image frame of a first parallax image, the color channels of the image frame may be sequentially controlled to project corresponding light beams according to "red-blue-green" in a display time period of the image frame, and meanwhile, the projector 2 corresponding to the display module 102 projects an image frame of a second parallax image according to a color playing sequence of "green-red-blue" in the display time period, so that a combined projection image with different color channels is implemented at the same time, and thus, human eyes of a user receive richer colors.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the display module of the projection module in the projection display system simultaneously emits light of different parallax images according to a preset frame rate, the display module modulates and sequentially displays at least two sub-images corresponding to each frame of projection image according to a preset color playing time sequence in the display time period of each frame of projection image, and at the same time, the sub-images of the projection images of different parallax images correspond to different color channels, further, a light processing device arranged in the 3D glasses receives light reflected by the curtain and can penetrate or filter at least one color light in the light received by the 3D glasses, further, a controller can control a light processor device in the 3D glasses to project color light corresponding to the color playing time sequence in the display time period according to the color playing time sequence, so that the 3D glasses and the projection module are matched to realize 3D display, and the 3D glasses can present more colors according to the color playing time sequence in the display time period of each frame of image, the color of the projection picture is enriched, and the projection display effect is improved.
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (14)
1. A projection display system, comprising:
the projection module comprises a light source and a display module, wherein the light source outputs light at least comprising R, G, B three colors, the light source comprises at least one group of laser light sources, each group of laser light sources at least comprises three RGB light-emitting units, one light-emitting unit comprises a plurality of light emitters, the display module receives the light output by the light source and then simultaneously projects two different parallax images, the two different parallax images are images obtained by shooting the same image with different parallaxes, each frame of projected image of each parallax image corresponds to at least two sub-images in a display time interval, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and at the same time, the sub-images of the projected images of different parallax images correspond to different color channels;
the 3D glasses comprise a left lens and a right lens, and are used for receiving the image light of the two different parallax images from the projection module through the left lens and the right lens, the 3D glasses are internally provided with a light processing device, and the light processing device is used for respectively adjusting the colors of the light rays correspondingly transmitted by the left lens and the right lens, and the left lens and the right lens respectively transmit the light with different colors at the same moment;
when the projection module displays the subimages corresponding to the two different parallax images according to a preset color playing time sequence, the left and right spectacle lenses respectively transmit color light corresponding to the corresponding color playing time sequence in the display time period, and the left and right spectacle lenses are matched with the projection module to realize 3D display.
2. The projection display system of claim 1, wherein; the projection display system further comprises a controller, wherein the controller is used for controlling the light processing device to respectively adjust the colors of the light rays acted by the left and right glasses lenses according to the preset color playing time sequence, and controlling the left and right glasses lenses of the 3D glasses to respectively transmit the light rays of the colors corresponding to the corresponding color playing time sequence in the display time period.
3. The projection display system of claim 2, wherein the display module is a fiber scanner including at least one scanning fiber, each scanning fiber correspondingly inputs light of at least one parallax image, the fiber scanner scans the two different parallax images through the at least one scanning fiber and sequentially emits light corresponding to the at least two sub-images according to a preset color playing time sequence within a display period of each frame of the projection image.
4. A projection display system as claimed in claim 2 or 3, characterized in that the light-processing means comprise light-transmissive filter optics and drive means;
the light transmitting and filtering optical element is arranged in the left spectacle lens and the right spectacle lens and comprises at least two monochromatic light transmitting sheets with different colors, and the monochromatic light transmitting sheets are used for transmitting light rays with one color of three colors corresponding to the projection picture;
and the driving component is used for driving the light-transmitting and light-filtering optical element to switch the optical element at least once according to the preset color playing time sequence according to the instruction of the controller in the display time interval, so as to change the light rays of the color acted by the light-transmitting and light-filtering optical element, and the light-transmitting and light-filtering optical elements in the left spectacle lens and the right spectacle lens act on the light rays of different colors respectively at the same moment.
5. The projection display system of claim 4, wherein the light transmissive filter optical element further comprises at least one filter, the filter and the monochromatic light transmissive plate are respectively disposed on different glasses lenses of the 3D glasses, and the filter is configured to filter one of the three colors of light corresponding to the projected image and transmit the other colors of light.
6. The projection display system of claim 5, wherein the light transmissive filter optical element has a disk shape or a strip shape, and a size of a monochromatic light transmissive sheet or filter in the light transmissive filter optical element is equal to or larger than a size of an eyeglass lens.
7. 3D glasses, comprising:
the left and right spectacle lenses are used for receiving projection light rays corresponding to different parallax images, the projection light rays are image light rays of two different parallax images which are projected at the same time after the light rays at least comprise R, G, B three colors and are output by at least one group of laser light sources, the two different parallax images are images obtained by shooting the same image through different parallaxes, each group of laser light sources at least comprises three RGB light-emitting units, one light-emitting unit comprises a plurality of light-emitting devices, each frame of projection image of each parallax image corresponds to at least two sub-images in a display time period, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and the sub-images of the projection images of the different parallax images correspond to different color channels at the same time;
and the light processing device is used for respectively adjusting the colors of the light rays correspondingly transmitted by the left and right spectacle lenses, the adjusted left and right spectacle lenses respectively transmit the light rays with the colors corresponding to the color playing time sequences of the corresponding parallax images, and the left and right spectacle lenses transmit light with different colors at the same time.
8. The 3D glasses according to claim 7, wherein the 3D glasses further comprise:
and the controller is used for controlling the light processing device to respectively adjust the colors of the light rays transmitted by the left and right glasses lenses in the 3D glasses according to the color playing time sequence corresponding to the projection image in the display time interval.
9. The 3D glasses according to claim 8, wherein the light processing device includes a light transmissive filtering optical element and a driving part;
the light-transmitting and light-filtering optical element comprises at least two monochromatic light-transmitting sheets with different colors, and the monochromatic light-transmitting sheets are used for transmitting light of one of three colors corresponding to the projection picture;
the driving component is connected with the controller and used for driving the light-transmitting and light-filtering optical element to perform at least one time of switching of the optical element according to the color playing time sequence according to the instruction of the controller in the display time interval, so that the light of the color acted by the light-transmitting and light-filtering optical element is changed, and the light-transmitting and light-filtering optical elements in the left spectacle lens and the right spectacle lens respectively act on the light of different colors at the same moment.
10. The 3D glasses of claim 9, wherein the light transmissive and filtering optical element further comprises at least one optical filter, the optical filter and the monochromatic light transmissive plate are respectively located at different positions in the left and right glasses lenses, the optical filter is configured to filter one of the three colors of light corresponding to the projected image and transmit the other colors of light; the light-transmitting and light-filtering optical element is in a disc shape or a strip shape, and the size of a monochromatic light-transmitting sheet or a light filter in the light-transmitting and light-filtering optical element is larger than or equal to that of a spectacle lens.
11. A projection module is characterized by comprising a light source and a display module, wherein the light source outputs light at least comprising R, G, B three colors, the light source comprises at least one group of laser light sources, each group of laser light sources at least comprises three RGB light-emitting units, one light-emitting unit comprises a plurality of light emitters, the display module receives the light output by the light source and then projects two different parallax images, the two different parallax images are images obtained by shooting the same image with different parallaxes, each frame of the projected image of each parallax image corresponds to at least two sub-images in a display time interval, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and at the same time, the sub-images of the projected images of different parallax images correspond to different color channels.
12. The projection module of claim 11, wherein the display module is a fiber scanning module, a fiber scanner in the fiber scanning module includes at least one scanning fiber, each scanning fiber is for inputting light of at least one parallax image, the fiber scanning module scans the two different parallax images through the at least one scanning fiber, and sequentially emits light corresponding to the at least two sub-images according to a preset color playing time sequence within a display period of each frame of the projection image.
13. A projection method applied to a projection display system is characterized by comprising the following steps:
controlling a light source to output light at least comprising R, G, B three colors, wherein the light source comprises at least one group of laser light sources, each group of laser light sources comprises at least RGB three light-emitting units, and one light-emitting unit comprises a plurality of light emitters;
simultaneously projecting two different parallax images according to the light output by the light source and a preset frame rate, wherein the two different parallax images are images obtained by shooting the same picture with different parallaxes; each frame of projection picture of each parallax image corresponds to at least two sub-images in a display time interval, the at least two sub-images are sequentially displayed according to a preset color playing time sequence, and at the same moment, the sub-images of the projection pictures of different parallax images correspond to different color channels;
controlling light rays acted by light processing devices in left and right glasses lenses in the 3D glasses according to the preset color playing time sequence, and respectively transmitting at least two colors of light rays of at least two sub-images in corresponding parallax images through the left and right glasses lenses in the display time period; the light processing device is used for transmitting or filtering at least one color light ray in the two image lights with different parallaxes.
14. The method of claim 13, wherein the light treatment device comprises at least two monochromatic filters, or wherein the light treatment device comprises at least one monochromatic filter and at least one light transmissive sheet; the light-transmitting sheet is used for filtering the light ray of one of the three colors corresponding to the projection picture and transmitting the light rays of the other colors;
the light rays acted by the light processing device in the left and right eyeglass lenses in the control 3D glasses comprise:
and controlling a light processor device in the 3D glasses to switch the lenses, adjusting the light rays of the colors acted by the light-transmitting sheets or the monochromatic filters corresponding to the left and right glasses lenses, and respectively acting on the light rays of different colors by the light-transmitting and light-filtering optical elements in the left and right glasses lenses at the same moment.
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