CN105116674B

CN105116674B - Display equipment and display control method

Info

Publication number: CN105116674B
Application number: CN201510482753.5A
Authority: CN
Inventors: 李勇
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2015-08-03
Filing date: 2015-08-03
Publication date: 2017-04-19
Anticipated expiration: 2035-08-03
Also published as: CN105116674A

Abstract

The invention discloses display equipment and a display control method. The method comprises the following steps that an image source generates an initial light beam set corresponding to a first image information set; a first diffraction component forms a first refraction light beam set corresponding to the initial light beam set in a photoconduction medium and a second diffraction component forms a second refraction light beam set corresponding to the initial light beam set in the photoconduction medium; a third diffraction component forms a first visual light beam set which is emitted out of the photoconduction medium based on the first refraction light beam set and forms a second visual light beam set which is emitted out of the photoconduction medium based on the second refraction light beam set; the first visual light beam set and the second visual light beam set bear at least parts of information of the first image information set. By using the equipment and the method of the invention, for users which are located in different visual areas of the display equipment, differential display can be realized.

Description

Display apparatus and display control method

Technical Field

The present invention relates to display technologies of electronic devices, and in particular, to a display device and a display control method.

Background

With current display devices, a user in any viewable area of the display device will always see the same content; that is, as the user's position in the viewable area of the display device changes, the images obtained by the user are consistent;

how to realize differential display for different user supports by the display device, no effective solution is available in the related art.

Disclosure of Invention

The embodiment of the invention provides display equipment and a display control method, which can realize differentiated display for users in different visual areas of the display equipment.

The technical scheme of the embodiment of the invention is realized as follows:

an embodiment of the present invention provides a display device, including:

an image source for generating an initial set of light beams corresponding to a first set of image information;

an optical unit comprising:

a light guiding medium for guiding the collection of light beams;

a first diffractive element disposed in a first region of the light guide medium such that the first diffractive element is located within an illumination range of at least a portion of the initial set of light beams for forming a first set of refracted light beams corresponding to the initial set of light beams inside the light guide medium;

a second diffractive element arranged in a second region of the light-guiding medium different from the first region, such that the second diffractive element is located within the range of at least part of the set of initial light beams for forming a second set of refracted light beams corresponding to the set of initial light beams inside the light-guiding medium;

and the third diffraction element is arranged in a third area of the light guide medium, which is different from the first area and the second area, so that the third diffraction element is positioned in the at least partial irradiation range of the first refraction light beam set and in the at least partial irradiation range of the second refraction light beam set, and is used for forming a first visible light beam set emitted out of the light guide medium according to the first refraction light beam set and forming a second visible light beam set emitted out of the light guide medium according to the second refraction light beam set, wherein the first visible light beam set and the second visible light beam set respectively bear at least part of information of the first image information set.

The embodiment of the invention provides a display control method, which is applied to display equipment and comprises the following steps:

an image source in the display device generates an initial set of light beams corresponding to the first set of image information;

a first diffractive element forming a first set of refracted light beams corresponding to the initial set of light beams inside the light guide medium, the first diffractive element being disposed in a first area of the light guide medium of the display device such that the first diffractive element is within an illumination range of at least a portion of the initial set of light beams, the light guide medium being configured to guide the set of light beams;

a second diffractive element forming a second set of refracted light beams corresponding to the initial set of light beams inside the light guiding medium, the second diffractive element being arranged in a second region of the light guiding medium different from the first region such that the second diffractive element is located within the range of at least part of the initial set of light beams;

and a third diffraction element arranged in a third area of the light guide medium forms a first visible light beam set which is emitted from the light guide medium according to the first refraction light beam set, and forms a second visible light beam set which is emitted from the light guide medium according to the second refraction light beam set, wherein the first visible light beam set and the second visible light beam set carry at least part of information of the first image information set, and the third diffraction element is positioned in the irradiation range of the first refraction light beam set and the second refraction light beam set.

In the embodiment of the invention, based on the cooperative processing of the three diffractive members and the light guide medium on the light beam set carrying the image information set, the first visible light beam set and the second visible light beam set carrying the image information set are formed, and the first visible light beam set and the second visible light beam set are correspondingly formed from the diffractive members (the second diffractive member and the third diffractive member) in different areas of the light guide medium, so that the first visible light beam set and the second visible light beam set are formed in different visible areas of the display device, therefore, when a user is in the visible area corresponding to the first visible light beam set, the image information set carried by the first visible light beam set can be obtained, correspondingly, when the user is in the visible area corresponding to the second visible light beam set, the image information set carried by the second visible light beam set can be obtained, if the image information set carried by the first visible light beam set is different from the image information set carried by the second visible light beam set, the user can obtain different image information sets (the image information sets can be continuous frame images) in different display areas of the display device, so that differential display based on different visible areas of the display device is realized.

Drawings

FIG. 1 is a first schematic structural diagram of a display device according to an embodiment of the present invention;

FIG. 2 is a second schematic structural diagram of a display device according to an embodiment of the present invention;

FIG. 3 is a third schematic structural diagram of a display device in an embodiment of the present invention;

FIG. 4 is a fourth schematic structural diagram of a display device according to an embodiment of the present invention;

FIG. 5 is a first diagram illustrating a third set of image information according to an embodiment of the present invention;

FIG. 6 is a first diagram illustrating a second set of image information according to an embodiment of the present invention;

FIG. 7 is a first diagram illustrating a first set of image information according to an embodiment of the present invention;

FIG. 8 is a second diagram illustrating a second set of image information according to an embodiment of the present invention;

FIG. 9 is a second diagram illustrating a third set of image information according to an embodiment of the present invention;

FIG. 10 is a second diagram illustrating a first set of image information according to an embodiment of the present invention;

FIG. 11 is a fifth schematic structural diagram of a display device in an embodiment of the present invention;

fig. 12 is a schematic structural diagram six of a display device in an embodiment of the present invention;

fig. 13 is a seventh schematic structural diagram of a display device in an embodiment of the present invention;

fig. 14 is a schematic structural diagram eight of a display device in an embodiment of the present invention;

fig. 15 is a schematic flow chart illustrating an implementation of the display control method according to the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

The display device described in the embodiment of the present invention may be a device that is used solely for displaying image information, such as a large outdoor information display screen (e.g., user advertisement display), or may be a device that supports not only image information display but also user interaction, such as a notebook computer, a smart television, a smart phone, a tablet computer, and the like.

Embodiments of the present invention are proposed based on the above-described type of display device.

Example one

The present embodiment describes a display device 10, and as shown in fig. 1, the display device 10 described in the present embodiment includes:

the image source 11 is configured to generate an initial light beam 111 based on each first image information in the first image information set, where each first image information corresponds to the initial light beam 111 to form an initial light beam set;

in practical application, the image source 11 realizes the function of a display unit, and specifically can be a projection display unit; the set of image information may be a series of consecutive frame images in the video to be displayed; or a set of a series of images, and accordingly, each initial light beam 111 in the initial light beam set independently carries image information (e.g. a frame image), and each initial light beam 111 includes a series of light rays to correspondingly form image information (e.g. a frame image in a video, or an image in a slide);

the image source 11 may be a laser projector, and a laser beam is used to transmit a beam set carrying image information; the optical components of the laser projector mainly comprise a red-green-blue three-color light valve, a beam combining X prism, a projection lens and a driving light valve; the laser projector is provided with red, green and blue lasers, the lasers are transmitted to the X prism after being expanded to integrate the three lasers, and then the integrated lasers are transmitted by the projection objective to form an initial light beam set;

the image source 11 may also adopt a Digital Light Processor (DLP) based projector, which mixes the colors of the Light beams after rotating at a high speed by a color wheel, and finally transmits an initial Light beam set carrying the first image information set through a prism;

the image source 11 may also be a projector based on a 3-liquid crystal panel (LCD) structure, which decomposes the light beams projected by the light splitting source into three colors, i.e., red, green, and blue, and projects the three colors onto respective corresponding LCDs, so as to project an initial light beam set carrying the first image information set from the LCDs, and transmit the initial light beam set through a lens, a reflector, and a mirror.

Setting the initial light beams projected by the image source 11 to the first diffractive part 122 as a first initial light beam set (wherein each first initial light beam 1111 in the first initial light beam set is projected based on the generated chronological order), and projecting each first initial light beam 1111 in the first initial light beam set to the first diffractive part 122 by the image source 11 based on the generated chronological order; accordingly, assuming that the initial light beams projected by the image source 11 onto the first diffractive part 122 are combined into a second initial light beam set (wherein each second initial light beam 1112 in the second initial light beam set is projected based on the chronological order of generation), each second initial light beam 1112 in the second initial light beam set is projected by the image source 11 onto the second diffractive part 123 based on the chronological order of generation;

an optical unit 12 comprising:

the light guide medium 121 may be made of a material having a light beam refraction characteristic, such as glass, and when a light beam set is incident on the surface of the light guide medium 121, the light guide medium 121 transmits the incident light beam set in a refracted form inside itself;

a first diffractive element 122 disposed in a first region of the light guide medium 121, wherein the first diffractive element 122 is located in an irradiation range of at least a portion of each of the initial light beams 1111 of the first initial light beam set, and the first diffractive element 122 may adopt a grating structure to implement a diffraction process on each of the initial light beams 1111 of the first initial light beam set, so as to form a first refracted light beam set corresponding to the first initial light beam set inside the light guide medium 121;

a second diffraction element 123, disposed in a second region of the light guide medium 121 different from the first region, such that the second diffraction element 123 is located in an irradiation range of at least a portion of each second original light beam 1112 in the second original light beam set, the first region and the second region are located on the same side (set as the first side) of the light guide medium 121, and the second diffraction element 123 may adopt a grating structure to implement diffraction processing on each second original light beam 1112 in the second original light beam set, so as to form a second refracted light beam set corresponding to the second original light beam set inside the light guide medium 121;

the third diffractive element 124 is disposed in a third area of the light guide medium 121, the third area and the first area are located on two opposite sides of the light guide medium 121, so that the third diffractive element 124 is located in an irradiation range of each first refracted light beam 1221 in the first refracted light beam set and each second refracted light beam 1231 in the second refracted light beam set, the third diffractive element 124 may employ a grating structure to correspondingly implement diffraction processing on the first refracted light beam 1221 and the second refracted light beam 1231, so that the first refracted light beam 1221 is emitted from the light guide medium 121 as a first visible light beam 1241, a first visible light beam 1241 corresponding to a first initial light beam 1111 sequentially generated by the light source 11 forms a first visible light beam set, a second visible light beam 1242 corresponding to a second initial light beam 1112 sequentially generated by the light source 11 forms a second visible light beam set, and thus a first visible light beam set emitted from the light guide medium 121 is formed according to the first refracted light beam set, and forms a second set of visible light beams exiting the light guide medium 121 according to the second set of refracted light beams.

The co-processing of the optical unit 12 and the image source 11 is explained below.

The first diffraction element 122 may adopt a grating structure to implement diffraction processing on each first initial light beam 1111 in the first initial light beam set (each first initial light beam is projected by the image source 11 based on the time sequence of generating each first initial light beam 1111), so that the first initial light beam 1111 is projected into the optical guiding medium 121 at a specific angle; the first initial light beam 1111 projected into the light guide medium 121 is refracted at a first side of the third diffractive element 124 (the third diffractive element 124 covers most of the second side of the light guide medium 121) arranged in the light guide medium 121 to form a first refracted light beam 1221, the first refracted light beam 1221 formed by the first initial light beam 1111 projected by the image source 11 forms a first refracted light beam set, meanwhile, due to the diffraction effect of the third diffractive element 124, the first initial light beam 1111 projected into the light guide medium 121 is further diffracted at a second side of the light guide medium 12 to exit from the second side of the light guide medium 121 as a first visible light beam 1241, the first visible light beams 1241 correspondingly formed by the first initial light beams 1111 sequentially projected by the image source 11 form a corresponding first visible light beam set, each first visible light beam 1241 in the first visible light beam set can be used for viewing corresponding image information at different time, in the present embodiment, the second image information is set.

Similarly, the second diffractive element 123 may adopt a grating structure to perform diffraction processing on each second initial light beam 1112 in the second initial light beam set (each second initial light beam is projected by the image source 11 based on the time sequence for generating each second initial light beam 1112), so that the second initial light beam 1112 is projected into the optical guiding medium 121 at a specific angle; the second initial light beam 1112 projected into the light guide medium 121 is refracted at a first side of a third diffractive element 124 (the third diffractive element 124 covers most of the second side of the light guide medium 121) arranged in the light guide medium 121 to form a second refracted light beam 1222, the first refracted light beam 1222 formed by the second initial light beam 1112 projected by the image source 11 forms a second refracted light beam set, and due to the diffraction effect of the third diffractive element 124, the second initial light beam 1112 projected into the light guide medium 121 is further diffracted at the second side of the light guide medium 12 to exit from the second side of the light guide medium 121 as a second visible light beam 1242, the second visible light beams 1242 formed by the second initial light beams 1112 sequentially projected by the image source 11 form a corresponding second visible light beam set, each second visible light beam 1242 in the second visible light beam set can be used for viewing corresponding image information at different time, in this embodiment, the third image information is set.

In the display device of the present embodiment, transmission paths of two independent light beam sets are formed by three diffractive members and a light guide medium, specifically, transmission paths of a light beam set carrying at least part of information of a second image information set are formed by diffraction processing of a first diffractive member, refraction of the light guide medium and diffraction processing of a third diffractive member, and accordingly, transmission paths of a light beam set carrying at least part of information of a third image information set are formed by diffraction processing of a second diffractive member, refraction of the light guide medium and diffraction processing of a third diffractive member; therefore, the initial light beam set emitted by the image source can be transmitted by using the corresponding transmission light path, and the initial light beam set transmitted by each light path bears at least part of different information (namely, a second image information set and a third graphic information set) of the first image information set, and a first visible light beam set and a second visible light beam set which bear the corresponding image information sets are formed in the visible area of the display device; when a user is in a visible region corresponding to the first visible light beam set (set as the first visible region, which is a region for completely perceiving the second image information set, that is, a part of the first image information set), the second image information set carried by the first visible light beam set can be obtained (for example, a series of continuous frame images can be used to realize an effect of making the user see a played video, and a series of images can be used to make the user see an effect similar to a slide show), accordingly, when the user is in a visible region corresponding to the second visible light beam set (set as the second visible region, which is a region for completely perceiving the third image information set, that is, a part of the first image information set), the third image information set carried by the second visible light beam set can be obtained (for example, a series of continuous frame images can be used to realize an effect of making the user see a played video), and if the second image information set carried by the first visible light beam set is in a visible region Different from the third image information set carried by the second visible light beam, it can be realized that the user obtains different image information in different display areas of the display device 10, thereby realizing differential display based on different visible areas of the display device 10.

It should be noted that although the related art has a scheme for viewing different images at different angles based on grating diffraction, different images can be viewed only when the viewing angle of the user slightly changes, and it is difficult to achieve the effect of viewing the same image information set (e.g., the second image information set or the second image information set) in a larger area (e.g., the first visible area or the second visible area) of the display device in the present embodiment, that is, the effect of projecting a visible light beam set having a wide-angle visible area through cooperation of the diffraction element and the light guide medium.

Example two

The present embodiment describes a display device 10, and as shown in fig. 2, the display device 10 described in the present embodiment includes:

an image source 11, configured to generate an initial light beam set corresponding to a first image information set, where in practical applications, the image source 11 may be a display unit, and specifically, a projector (such as the aforementioned laser projector, a projector using DLP, or a projector using 3 LCD) may be used to convert the first image information set into the initial light beam set;

an optical unit 12 comprising:

a first diffraction element 122, disposed in a first region of the light guide medium 121, where the first diffraction element 122 is located in an irradiation range of at least a part of each first initial light beam 1111 of the initial light beam set, and the first diffraction element 122 may adopt a grating structure to implement a diffraction process on the light beam set, so as to form a first refracted light beam set 1221 corresponding to 1111 of each first initial light beam in the first initial light beam set inside the light guide medium 121;

As shown in fig. 3, when the third diffractive element 123 forms the first visible light beam set based on the first refracted light beam set and forms the second visible light beam set based on the second refracted light beam set, accordingly, the first visible light beam set forms a first visible area in the outgoing direction corresponding to the first visible light beam set, which makes the user eye completely perceive a second image information set (at least part of the first image information set, each second image information in the second image information set is displayed on a chronological order, so that the projection to the human eye can have a video playing effect or a slide-show-like effect), the second visible light beam set forms a second visible area in the outgoing direction corresponding to the second visible light beam set, which makes the user eye completely perceive a third image information set (at least part of the first image information set, the second image information in the second image information set is displayed sequentially based on time sequence, so as to be projected to a second visual area 1244 where human eyes can have an effect of video playing or an effect similar to slide show playing), each first light beam 1231 in the first visual light beam set is used for carrying the second image information (each second image information can correspond to one frame image) displayed at different times in the second image information set, and each second visual light beam 1242 in the second visual light beam set is used for carrying the third image information (each third image information can correspond to one frame image) displayed at different times in the third image information set;

in fig. 3, for example, the first visual area 1243 is partially the same as the second visual area 1244, that is, there may be a partially overlapped area between the first visual area 1243 and the second visual area 1244, which corresponds to a triangular area in fig. 3, that is, a third visual area, where the third visual area is a viewing area of the first image information set (the second image information set and the third image information set can be simultaneously viewed); of course, when the first set of visible light beams 1241 and the second set of visible light beams 1242 in fig. 3 are perpendicular to the light guide medium 121, there is no overlapping area between the first visible area 1243 and the second visible area 1244.

The second image information set and the third image information are both parts of the first image information set, and different relationships among the first image information set, the second image information set and the third image information set will be described with reference to specific examples.

Example 1) each second image information in the second image information set is completely different from each third image information in the third image information set (there is no intersection, i.e. there is no overlapping image information), and the union of the second image information set and the third image information set is the first image information set.

The user 1 and the user 2 play a poker game based on the display device 10, and the user 1 and the user 2 need to view respective deal information and cannot be seen by each other; when the user 1 is located in the first visual area 1243, as shown in fig. 4, each first visual light beam 1241 in the first set of visual light beams carrying the second set of image information is sequentially illuminated into the eye of the user 1, so that the user 1 views the second set of image information, wherein a third image information in the second set of image information is shown in fig. 6 and includes the bottom plate information of the user 1; when the user 2 is located in the second visual area 1244, each third visual light beam 1242 in the second set of visual light beams carrying a third set of image information is sequentially irradiated to the eyes of the user 2, so that the user 2 views the third set of image information, wherein the third set of image information includes the bottom plate information of the user 2 as shown in fig. 5; in this way, the user 1 and the user 2 are located in different display areas of the display device 10, so that different image information can be viewed, and different image information can be displayed to different users in an interactive scene.

It should be noted that, when the user 1 and the user 2 are located in the third visual area, since the third visual area has both the first visual light beam set and the second visual light beam set to exit, the user 1 and the user 2 can see the second image information set and the third image information set (i.e. the first image information set) simultaneously in the third visual area, and a schematic diagram of the first image information set seen by the user 1 and the user 2 in the third visual area is shown in fig. 7.

Example 2) the first image information set and the second image information set are partly identical (there is an intersection, i.e. there is overlapping partial image information), the union of the second image information set and the third image information set being the first image information set.

Still taking the above-mentioned playing card game as an example, the user 1 and the user 2 need to see their own deal information and also need to see the dealing animation together, accordingly, the image source 11 projects the initial light beam set 111 of the first diffraction element 122 to carry a first image information set, each first image information corresponds to one frame image of the dealing animation and the deal information of the user 1, and correspondingly, the first visible light beam set 1241 also carries the dealing animation and the first image information set; the image source 11 projects the initial light beam set 111 of the second diffraction element 123 to carry a second image information set, each second image information corresponds to a frame image of the dealing animation and the deal information of the user 2, and correspondingly, the second visible light beam set 1242 also carries the dealing animation and the deal information of the user 2;

as shown in fig. 3, when the user 1 is located in the first visual area 1243, each first visual light beam 1241 in the first set of visual light beams bearing the first set of image information is sequentially illuminated into the eye of the user 1, so that the user 1 views each second image information in the second set of image information, where one second image information (e.g. one frame image) in the second set of image information is shown in fig. 8, and includes the bottom card information of the user 1 and one frame image corresponding to the dealing animation;

when the user 2 is located in the second visual area 1244, a second set of visual light beams 1242 carrying a third set of image information is illuminated into the eyes of the user 2, so that the user 2 views the third set of image information, wherein the third set of image information is shown in fig. 9 and comprises the deal information and the dealing animation of the user 2; in this way, the user 1 and the user 2 are located in different display areas of the display device 10, so that the same dealing animation and the corresponding deal information can be seen together, and different image information can be displayed to different users in an interactive scene.

It should be noted that, when the user 1 and the user 2 are located in the third visual area 1245, since the third visual area has both the first set of visual light beams 1241 and the second set of visual light beams 1242, the user 1 and the user 2 can see the second set of image information and the third set of image information (i.e. the first set of image information) simultaneously in the third visual area 1245, and a schematic diagram of the first set of image information seen by the user 1 and the user 2 in the third visual area 1245 is shown in fig. 10.

Example 3) the second set of image information and the third set of image information are both the same as the first set of image information (the second set of image information and the third set of image information are both the largest subsets of the first set of image information), that is, the display device 10 not only enables differentiated display of users of different visual areas, but also presents the same image information to users of different visual areas, considering that in a scenario of multi-user cooperative operation, the users may need to see the same image information (such as win-or-lose score information of a game displayed at the end of the game), and therefore, the display device 10 may be switchable between a first display mode (i.e., displaying different image information to users of different viewing areas) and a second display mode (i.e., displaying the same image information to users of different viewing areas) depending on actual scene requirements.

Embodiment case where three image sources include two sub-image sources

In this embodiment, a display implementation process is described with reference to the structure of the image source 11 described in the foregoing embodiment based on the first embodiment and the second embodiment.

As shown in fig. 11, the image source 11 described in the foregoing embodiment may include:

a first sub-image source 111, an illumination range of the first sub-image source 111 at least including the first region, configured to sequentially generate each first initial light beam 1111 in a first initial light beam set based on each second image information in a second image information set, each first initial light beam 1111 corresponding to one second image information in the second image information set, the first sub-image source 111 sequentially projects the first initial light beams 1111 into the light guide medium 121 from the first incident region in a first projection direction based on a chronological order of generation, so that the first diffraction element 122 forms a first refracted light beam set 1221 corresponding to the first initial light beam set 1111 in the light guide medium 121; each of the first initial light beams 1111 of the first initial light beam set independently carries a second image information (e.g. a frame image), and each of the first initial light beams 1111 includes a series of light rays to form a second image information (e.g. a frame image in a video, or an image in a slide);

the second sub-image sources 112, the irradiation range of the second sub-image sources 112 at least includes the second region, and is configured to generate, based on the third set of image information, each second initial light beam 1112 in the second set of initial light beams in the set of initial light beams, where each second initial light beam 1112 corresponds to one third image information in the third set of image information, and the second sub-image sources 112 project the second initial light beams 1112 from the second incident region into the light guide medium 121 in the second projection direction based on the generation time sequence, so that the second diffracting element 123 forms a second set of refracted light beams 1231 corresponding to the second set of initial light beams in the light guide medium 121.

Once the positions of the user 1 and the user 2 in the visual area of the display device 10 are determined (taking fig. 3 as an example, it is determined that the user 1 is located in the first visual area 1243 and the user 2 is located in the second visual area 1244), the projection directions of the first and second sub-image sources 111 and 112 are fixed, and if the user 1 deviates from the currently formed first visual area 1243, the first sub-image source 111 needs to adjust the direction of projecting the first initial set of light beams to the first diffractive part 122, so that the user 1 is located in the adjusted first visual area 1243 again; similarly, if the user 2 deviates from the currently formed second viewing area 1244, the second sub-image source 112 needs to adjust the direction of projecting the second initial set of light beams to the second diffractive part 123, so that the user 2 is located again in the adjusted second viewing area 1244.

In this embodiment, the first sub-image source transmits a first initial light beam set carrying at least part of information of the first image information set through a transmission light path formed by the first diffractive element, the light guide medium and the third diffractive element in the display device, and the second sub-image source transmits a second initial light beam set carrying at least part of information of the first image information set through a transmission light path formed by the second diffractive element, the light guide medium and the third diffractive element in the display device, so that the first sub-image source and the second sub-image source can independently and mutually noninterfere to transmit the light beam sets through corresponding transmission light paths, which is beneficial to flexibly adjusting image information displayed in the visible area, for example, when the second image information set presented in the first visible area needs to be adjusted, the first image source only needs to adjust projection parameters to project the first initial light beam set carrying the adjusted second image information set, the working state of the second sub-image source does not need to be adjusted; moreover, the low coupling between the sub-image sources also ensures the stability of the display device for presenting image information, for example, when one sub-image source fails, the working state of the other sub-image source is not affected.

As shown in fig. 12, the first sub-image source 111 may include:

a first display 11101 for generating a first initial beam set of the initial beam sets based on the second set of image information;

the first collimating component 11102, configured to collimate the first initial beam set to obtain the first initial beam set, so that each first initial beam in the first initial beam set is sequentially projected into the light guide medium in the first projection direction;

the second sub-image source 112 may include:

a second display 11201 for generating a second initial light beam set of the initial light beam sets based on the third set of image information;

and a second collimating element 11202, configured to collimate the second initial light beam set to obtain the second initial light beam set, so that each second initial light beam in the second initial light beam set is sequentially projected into the light guide medium in the second projection direction.

The first initial light beam set 1111 projected by the first sub-image source 111 and the second initial light beam set 1112 projected by the second sub-image source 112 are collimated into parallel light beam sets to reduce the diffuse reflection formed in the light guide medium 121, enhance the intensity of the first visible light beam set 1241 and the second visible light beam set 1242 emitted from the light guide medium 121, avoid the brightness attenuation of the light beam set emitted from the image source 11 during the transmission process, and ensure the clear effect of the user for watching image information.

Embodiment four two sub-image sources realize differentiated display

In the present embodiment, based on the third embodiment, when the first sub-image source 111 and the second sub-image source 112 are provided in the image source 11 as shown in fig. 11 or 12, a user can view different image information in different visual regions of the display device 10.

Still taking the poker game described in the second embodiment as an example, when the users 1 and 2 play the poker game based on the display device 10, the user 1 needs to see the information of the playing cards of the user 1 (the information of the playing cards of the user 1 cannot be seen by the user 2), and similarly, the user 2 needs to see the information of the playing cards of the user 2 (the information of the playing cards of the user 2 cannot be seen by the user 1), when the application of the poker game run by the display device 10 outputs a corresponding output second image information set (as shown in fig. 6, the second image information set includes the information of the playing cards of the user 1) and a third image information set (as shown in fig. 5, the third image information set includes the information of the playing cards of the user 2) to the image source 11, the first sub-image source 111 determines the user 1 (which can be determined by using a sensor such as infrared detection in the display device 10), that the projection direction (first projection direction) of the first sub-image source 111 is determined based on the position, when the first primary light beams 1111 in the first primary light beam set carrying the second image information set are projected by the first sub-image source 111 in the first projection direction, corresponding first visible light beams 1241 in the first visible light beam set are formed through the cooperative processing of the first diffractive part 122, the light guide medium 123 and the third diffractive part 124, and each first visible light beam 1241 in the first visible light beam set forms a first visible area 1243 (including the position where the user 1 is currently located) as shown in fig. 3, so that the user 1 can see the second image information set as shown in fig. 6 through the first visible light beams; similarly, the second sub-image source 112 correspondingly determines a projection direction (i.e., a second projection direction) of the second sub-image source 112 based on the position of the user 2, so that when the second sub-image source 112 projects a second initial light beam set carrying a third image information set based on the second projection direction, each second visible light beam 1242 in the second visible light beam set is formed through the cooperative processing of the first diffractive part 122, the light guide medium 123 and the third diffractive part 124, and each second visible light beam 1242 in the second visible light beam set forms a first visible area 1243 (including the position where the user 1 is currently located) as shown in fig. 3, so that the user 2 sees the third image information set as shown in fig. 5 through the second visible light beam set;

moreover, the user 1 can only see the first visible light beam set in the first visible area 1243 shown in fig. 4 (the first visible area 1243 is not an overlapping area of the first visible light beam set and the second visible light beam set), and the user 2 can only see the second visible light beam set in the second visible area 1244 shown in fig. 4 (the second visible area 1244 is not an overlapping area of the first visible light beam set and the second visible light beam set), which ensures that the user 1 and the user 2 can only see the brand information corresponding to themselves, and realizes the differential display in different visible areas of the display device 10.

It should be noted that, in practical applications, a plurality of sub-image sources may also be disposed in the image source 11, a diffraction element corresponding to the number of sub-image sources may be disposed in the first side surface of the corresponding light guide medium 121, and each diffraction element corresponds to an optical path of one sub-image source with the light guide medium 121 and the third diffraction element 124, so that the sub-image sources form visible light beams on the second side surface of the light guide medium based on the optical paths, and the visible areas corresponding to the visible light beams of each sub-image source are different (although there may be overlapping areas in the visible areas of different sub-image sources), for example, when three sub-image sources are disposed in the image source 11 and three diffraction elements are disposed in the first side surface of the light guide medium 124, optical paths corresponding to three sub-image sources one by one can be formed, thereby forming a total of three visible areas corresponding to the three sub-image sources, each visible area, thereby realizing the differential display of multiple areas.

Example five cases where display device is provided with only one image source

As an alternative to providing two sub-image sources in the image source 11 in the third embodiment, as shown in fig. 13, the image source 11 in the display device described in the first and second embodiments may be provided in an area with an equal distance from the first diffractive element 122 and the second diffractive element 123, and the projection direction of the image source 11 may be switched between the first projection direction and the second projection direction;

for example, when the projection direction of the image source 11 is switched to the first projection direction, a first initial light beam set 1111 in an initial light beam set generated based on the first image information set may be projected into the light guide medium 121 to be transmitted in the form of a first refracted light beam set 1221 inside the light guide medium 121 through the diffraction processing of the first diffraction element 122, and when the first refracted light beam set 1221 corresponding to the first initial light beam set 1111 is transmitted inside the light guide medium 121 to the setting region (second region) of the first diffraction element 122, the first refracted light beam set 1111 exits the light guide medium 121 through the diffraction processing of the second diffraction element 123 to form a first visible light beam set 1241;

for another example, when the projection direction of the image source 11 is switched to the second projection direction, a second initial light beam set 1112 in the initial light beam set generated based on the second image information set may be projected into the light guide medium 121 to be transmitted as a first refracted light beam set 1221 inside the light guide medium 121 through the diffraction processing of the second diffraction element 123, and when the first refracted light beam set 1221 corresponding to the second initial light beam set 1112 is transmitted to the setting region (third region) of the second diffraction element 123 inside the light guide medium 121, the first refracted light beam set 1221 is emitted to the light guide medium 121 through the diffraction processing of the third diffraction element 124 to form a second visible light beam set 1242;

in practical applications, the image source 11 may switch between the first projection direction and the second projection direction at a frequency (1/0.1-0.4 second) higher than a preset threshold value, so as to utilize the persistence of vision of human eyes, so that a user in the first visual area 1243 shown in fig. 3 can see a first set of image information carried by the first set of visual beams 1241, and a user in the second visual area 1244 shown in fig. 3 can see a second set of image information carried by the second set of visual beams 1242, and a user in the third visual area can see the first set of image information carried by the first set of visual beams 1241 and the second set of image information carried by the second set of visual beams 1242 at the same time.

Generally, the initial set of light beams projected by the image source 11 may be collimated into parallel light beams to reduce the diffuse reflection formed in the light guide medium 121 and enhance the intensity of the first set of visible light beams 1241 and the second set of visible light beams exiting the light guide medium 121.

Accordingly, as shown in fig. 14, the display apparatus further includes:

and a third collimating element 1115, connected to the image source 11, for collimating the first initial light beam set 1111 generated by the image source 11 to obtain a parallel first initial light beam set 1111, and collimating the second initial light beam set 1112 generated by the image source 11 to obtain a parallel second initial light beam set 1112, so as to reduce diffuse reflection formed in the light guide medium 121, enhance the intensity of the first visible light beam set 1241 and the second visible light beam set 1242 emitted from the light guide medium 121, avoid brightness attenuation of the light beam set emitted from the image source 11 during transmission, and ensure a clear effect of a user in viewing image information.

Embodiment six image sources realize differentiated display

The present embodiment is based on the third embodiment, and describes that the image source 11 shown in fig. 13 or fig. 14 enables the user to see different image information in different visual areas of the display device 10.

Still taking the poker game described in the second embodiment as an example, when the users 1 and 2 play the poker game based on the display device 10, the user 1 needs to see the playing card information of the user 1 (the playing card information of the user 1 cannot be seen by the user 2), and similarly, the user 2 needs to see the playing card information of the user 2 (the playing card information of the user 2 cannot be seen by the user 1), when the poker game application run by the display device 10 outputs a corresponding output second image information set (as shown in fig. 6, the second image information set includes the playing card information of the user 1) and a third image information set (as shown in fig. 5, the third image information set includes the playing card information of the user 2) to the image source 11, the image source 11 first determines the positions of the users 1 and 2 (as can be determined by using a sensor such as infrared detection in the display device 10), the projection direction of the second image source 11 (first projection direction) is determined based on the position of the user 1, when the image source 11 sequentially projects the first initial light beams 1111 of the first initial light beam set carrying the second image information set in the first projection direction, the first visible light beam set is formed through the cooperative processing of the first diffractive part 122, the light guide medium 123 and the third diffractive part 124, each first visible light beam 1241 of the first visible light beam set forms a first visible area 1243 (including the position where the user 1 is currently located) as shown in fig. 3, so that the user 1 can see the second image information set as shown in fig. 6 through the first visible light beam set; then, the image source 11 is switched to the second projection direction, so that when the image source 11 sequentially projects each second initial light beam 1112 in the second initial light beam set carrying the third image information set based on the second projection direction, a second visible light beam set is formed through the cooperative processing of the first diffractive part 122, the light guide medium 123 and the third diffractive part 124, each second visible light beam 1242 in the second visible light beam set forms a second visible area 1244 (including the position where the user 2 is currently located) as shown in fig. 3, so that the user 2 can see each second image information in the third image information set as shown in fig. 5 through the second visible light beam set; wherein the image source 11 is switched between the first projection direction and the second projection direction at a preset frequency, and the projection time in each projection direction satisfies the persistence of vision characteristic of human eyes, so that flickering can be prevented when image information is displayed.

EXAMPLE seven

In this embodiment, a display control method is described, which corresponds to the processing of the display device described in the above embodiment, and for the details of the disclosure in this embodiment, refer to the description of the foregoing embodiment; as shown in fig. 15, the method comprises the following steps:

an image source in a display device generates an initial set of light beams corresponding to a first set of image information, step 101.

A first diffractive element forms a first set of refracted light beams corresponding to the set of initial light beams inside the light guiding medium, step 102 a.

A first diffractive element is disposed in a first region of the light guiding medium such that the first diffractive element is positioned within an illumination range of at least a portion of the initial set of light beams, the light guiding medium in the display device for guiding the set of light beams.

Step 102b, the second diffractive element forms a second set of refracted light beams corresponding to the set of initial light beams inside the light guiding medium.

A second diffractive element is disposed in a second region of the light guiding medium different from the first region such that the second diffractive element is located within an illumination range of at least a portion of the set of primary light beams.

The execution sequence of the step 102a and the step 102b is not sequential.

Step 103, the third diffractive element forms a first set of visible light beams emitted from the light guide medium according to the first set of refracted light beams, and forms a second set of visible light beams emitted from the light guide medium according to the second set of refracted light beams.

And a third diffraction element is arranged in a third area of the light guide medium, the first visible light beam set and the second visible light beam set carry at least part of information of the first image information set, and the third diffraction element is positioned in the irradiation range of the first refraction light beam set and the second refraction light beam set.

As one example, the first set of visible light beams carries a second set of image information, the second set of visible light beams carries a third set of image information, the second and third sets of image information carrying at least part of the information of the first set of image information; wherein,

the second image information set and the third image information set may be the same, or the second image information set and the third image information set may be different (there may be overlapping image information or there may not be overlapping image information between the second image information set and the third image information set).

As an example, the first visible light beam set forms a first visible area in the emitting direction corresponding to the first visible light beam set, and the second visible light beam set forms a second visible area in the emitting direction corresponding to the second visible light beam set; wherein,

the first visual area is partially overlapped with the second visual area, the first visual area is an area for completely sensing the second image information set, and the second visual area is an area for completely sensing the third image information set.

As one example, an image source in the display device generates an initial set of light beams corresponding to a first set of image information, comprising:

a first sub-image source in the image sources projects each first initial light beam of a first initial light beam set in the initial light beam set generated based on a second image information set into the light guide medium from the first incidence area in a first projection direction according to the generation time of each first initial light beam, and the irradiation range of the first sub-image source at least comprises the first area

And a second sub-image source in the image source generates each second initial light beam in a second initial light beam set in the initial light beam set based on a third image information set, and sequentially projects each second initial light beam from the second incidence area into the light guide medium in a second projection direction according to the generation time of each second initial light beam, wherein the irradiation range of the second sub-image source at least comprises the second area.

As one example the first subpicture source projecting a first set of the initial light beams generated based on the second set of image information from the first incident area into the light guide medium in a first projection direction includes:

a first display of the first sub-image source generating a first set of initial light beams of the set of initial light beams based on the second set of image information;

a first collimating element in the first sub-image source collimates the first initial light beam set to obtain the first initial light beam set, so that the first initial light beam set is projected into the light guide medium in the first projection direction;

a second set of initial light beams of the set of initial light beams generated by a second one of the image sources based on a third set of image information is projected into the light guide medium from the second incidence region in a second projection direction, comprising:

a second display in the second sub-image source generates a second set of initial light beams in the set of initial light beams based on the third set of image information;

and a second collimating part in the second sub-image source collimates the second initial light beam set to obtain the second initial light beam set, so that the second initial light beam set is projected into the light guide medium in the second projection direction.

the image source is switched between a first projection direction and a second projection direction, wherein the illumination range of the image source at the first projection direction at least comprises the first area, and the illumination range of the image source at the second projection direction at least comprises the second area;

wherein the image source, when switching to the first projection direction, sequentially projects each of the first initial light beams of the first initial light beam set generated based on the second image information set into the light guide medium by a time of generation of the each of the first initial light beams; and when the second projection direction is switched, sequentially projecting each second initial light beam in a second initial light beam set in the initial light beam set generated based on the third image information set into the light guide medium from the second incidence area according to the generation time of each second initial light beam.

As one example, the image source switches in a first projection direction and a second projection direction, comprising:

the image source switches in the first projection direction and the second projection direction at a frequency above a preset threshold.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A display device comprising an image source, and an optical unit comprising a light-guiding medium and a diffractive element,

the image source is used for generating an initial light beam set corresponding to a first image information set;

the light guide medium is used for guiding the light beam set;

the diffraction element includes:

a first diffractive element disposed in a first region of said light guiding medium such that said first diffractive element is located within the range of illumination of at least a portion of said initial set of light beams for forming a first set of refracted light beams corresponding to at least a portion of said initial set of light beams within said light guiding medium;

a second diffractive element arranged in a second region of the light-guiding medium different from the first region such that the second diffractive element is located within the range of at least part of the set of initial light beams for forming a second set of refracted light beams corresponding to at least part of the set of initial light beams inside the light-guiding medium;

and the third diffraction element is arranged in a third area of the light guide medium, which is different from the first area and the second area, so that the third diffraction element is positioned in the at least partial irradiation range of the first refraction light beam set and in the at least partial irradiation range of the second refraction light beam set, and is used for forming a first visible light beam set emitted out of the light guide medium according to the first refraction light beam set and forming a second visible light beam set emitted out of the light guide medium according to the second refraction light beam set, wherein the first visible light beam set and the second visible light beam set jointly bear at least part of the first image information set.

2. The display device according to claim 1,

the first visible light beam set is used for bearing a second image information set, the second visible light beam set is used for bearing a third image information set, and the second image information set and the third image information set are both partial first image information sets; wherein,

the second set of image information is the same as the third set of image information, or the second set of image information is different from the third set of image information.

3. The display device according to claim 2,

the first visible light beam set forms a first visible area in the emergent direction corresponding to the first visible light beam set, and the second visible light beam set forms a second visible area in the emergent direction corresponding to the second visible light beam set; wherein,

4. The display device according to claim 2,

the image source includes:

a first sub-image source, an irradiation range of which at least includes the first region, configured to sequentially project, according to generation timings of the first initial light beams, each of the first initial light beams in the first initial light beam set generated based on the second image information set, from a first incident region into the light guide medium in a first projection direction;

and the irradiation range of the second sub-image source at least comprises the second area, and the second sub-image source is used for sequentially projecting each second initial light beam in the second initial light beam set in the initial light beam set generated based on the third image information set into the light guide medium from the second incidence area in a second projection direction according to the generation time of each second initial light beam.

5. The display device according to claim 4,

the first sub-image source comprises:

a first display for generating a first set of the initial beams based on the second set of image information;

the first collimating component is used for collimating the first initial light beam set to obtain the first initial light beam set, so that each first initial light beam in the first initial light beam set is sequentially projected into the light guide medium in the first projection direction;

a second display for generating a second set of initial beams of the set of initial beams based on the third set of image information;

and the second collimating component is used for collimating the second initial light beam set to obtain the second initial light beam set, so that each second initial light beam in the second initial light beam set is sequentially projected into the light guide medium in the second projection direction.

6. The display device according to claim 4,

the image source is used for switching between a first projection direction and a second projection direction, the illumination range of the image source at the first projection direction at least comprises the first area, and the illumination range of the image source at the second projection direction at least comprises the second area;

when the image source is switched to the first projection direction, sequentially projecting each first initial light beam in a first initial light beam set in the initial light beam set generated based on the second image information set into the light guide medium according to the generation sequence time of each first initial light beam; and when the second projection direction is switched, sequentially projecting each second initial light beam in a second initial light beam set in the initial light beam set generated based on the third image information set into the light guide medium from the second incidence area according to the generation sequence time of each second initial light beam.

7. A display control method, characterized in that the method comprises:

a first diffractive element forming a first set of refracted light beams corresponding to the initial set of light beams inside a light guiding medium of the display device, the first diffractive element being arranged in a first area of the light guiding medium such that the first diffractive element is located within an illumination range of at least part of the initial set of light beams, the light guiding medium being configured to guide the set of light beams;

8. The method of claim 7,

the first visual area is partially overlapped with the second visual area, the first visual area is an area for completely sensing a second image information set, and the second visual area is an area for completely sensing a third image information set.

9. The method of claim 7, wherein an image source in the display device generates an initial set of light beams corresponding to a first set of image information, comprising:

a first sub-image source in the image sources projects each first initial light beam of a first initial light beam set in the initial light beam set generated based on a second image information set into the light guide medium from a first incidence area in a first projection direction according to the generation sequence of each first initial light beam, wherein the irradiation range of the first sub-image source at least comprises the first area;

and a second sub-image source in the image source generates each second initial light beam in a second initial light beam set in the initial light beam set based on a third image information set, and sequentially projects each second initial light beam from a second incidence area into the light guide medium in a second projection direction according to the generation time of each second initial light beam, wherein the irradiation range of the second sub-image source at least comprises the second area.

10. The method of claim 9,

the first sub-image source projecting a first set of the initial light beams generated based on the second set of image information from the first incident area into the light guide medium in a first projection direction includes:

11. The method of claim 9, wherein an image source in the display device generates an initial set of light beams corresponding to a first set of image information, comprising: