CN115576163A

CN115576163A - Display device and imaging method

Info

Publication number: CN115576163A
Application number: CN202110763963.7A
Authority: CN
Inventors: 李仕茂; 邹冰; 邓宁
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2023-01-06
Also published as: CN115657414A; WO2023279901A1

Abstract

The embodiment of the invention discloses a display device and an imaging method, which can realize imaging in different areas. The display apparatus includes a light source, an imaging engine, a control unit, and a plurality of lenses. The light source is used for transmitting the light beam to the imaging engine. The imaging engine is used for modulating the light beam to obtain a modulated light beam. The control unit is used for selecting a target lens from the plurality of lenses and controlling the modulated light beam to be transmitted to the target lens, and the target lens is used for imaging the modulated light beam.

Description

Display device and imaging method

Technical Field

The present application relates to the field of electronic devices, and in particular, to a display device and an imaging method.

Background

The existing display device generally comprises three parts, namely a backlight source, an imaging engine and a lens. The imaging engine mainly includes a Liquid Crystal Display (LCD), a Digital Micromirror Device (DMD), and a Liquid Crystal On Silicon (LCOS). The existing backlight, imaging engine and lens are integrated on one module. Viewing an image in an area where a display device needs to be laid out. For example, in a home display scene, if an image needs to be viewed in a living room, a display device needs to be arranged in the living room. If the image needs to be viewed in the bedroom, the display device needs to be arranged in the bedroom.

Therefore, if an image is viewed in a plurality of different areas, a plurality of different display devices need to be laid out in the different areas, which increases the cost of laying out the display devices. And each display device needs to at least comprise three parts, namely a backlight source, an imaging engine and a lens. Resulting in a larger volume and a higher noise of the display device.

Disclosure of Invention

The application provides a display device and an imaging method, which can realize imaging in different areas.

In a first aspect, an embodiment of the present invention provides a display device, which includes a light source, an imaging engine, a control unit, and a plurality of lenses. The light source is used to transmit a light beam to the imaging engine. The imaging engine is used for modulating the light beam to obtain a modulated light beam. The control unit is used for selecting a target lens from the plurality of lenses and controlling the modulated light beam to be transmitted to the target lens. The target lens is used for imaging the modulated light beam.

It can be seen that imaging in multiple regions can be achieved by one display device. Different display equipment does not need to be arranged in different areas, so that the layout difficulty of the display equipment is reduced, and the flexibility of the layout of the display equipment is improved. Since one display device can realize imaging at a plurality of different regions, the layout cost of the display device is reduced. The volume and noise of the display device imaging in a plurality of areas can be reduced, and the film watching experience of audiences is improved.

Based on the first aspect, in an optional implementation manner, the controlling unit is configured to select a target lens from the multiple lenses, and control transmission of the modulated light beam to the target lens includes: the control unit is used for controlling the imaging engine and transmitting the modulated light beam to the target lens.

Therefore, the imaging engine shown in the invention can directly transmit the modulated light beams to different target lenses so as to realize the imaging of the target lenses positioned in different areas.

In an optional implementation manner, based on the first aspect, the display device further includes a light selection module. The light selection module is used for receiving the modulated light beam from the imaging engine; the control unit is used for controlling the light selection module and transmitting the modulated light beam to the target lens.

Therefore, the display device can achieve the purpose of transmitting the modulated light beams to different target lenses through the light selection module, and flexibility of target lens selection is improved.

In an optional implementation manner, based on the first aspect, the display device further includes a light selection module. The light selection module is configured to receive the modulated light beam from the imaging engine. The optical selection module is used for splitting the modulated light beam into N paths of split light beams, the number of the target lenses is N, the optical selection module is used for transmitting one path of split light beam to each target lens, and N is a positive integer greater than or equal to 2.

Therefore, the display equipment can achieve the purpose of imaging in a plurality of areas simultaneously, and the imaging efficiency is effectively improved. And imaging is carried out in a plurality of areas simultaneously, a plurality of display devices do not need to be arranged, and the cost for arranging the display devices is reduced.

In an optional implementation manner according to the first aspect, the display device includes a light splitting unit. The light splitting unit is used for splitting the modulated light beam into N paths of split light beams. The display device includes N imaging engines. And the N imaging engines are respectively used for modulating the N paths of split light beams so as to obtain the N paths of split light beams after modulation is finished. One or more light selection modules are used for transmitting the N paths of split light beams to the N target lenses.

In an optional implementation form according to the first aspect, the light selection module includes at least one of:

mechanical optical switches, beam splitters, half mirrors or electro-optic effect optical switches.

Based on the first aspect, in an optional implementation manner, the light selection module includes an optical splitter, where the optical splitter includes an input port and N output ports, the input port is configured to receive the modulated light beams from the imaging engine, and N target lenses are configured to receive the split light beams from the N output ports, respectively.

Based on the first aspect, in an optional implementation manner, the display device further includes a control unit, where the control unit is configured to drive the optical splitter to rotate so as to turn on optical paths between the N target lenses and the N output ports.

Based on the first aspect, in an optional implementation manner, the light selection module includes a semi-transparent reflector, where the semi-transparent reflector has a reflective surface and a transmissive surface, the reflective surface is configured to receive the modulated light beam from the imaging engine, and the reflective surface and the transmissive surface are configured to output two paths of the split light beams respectively.

Based on the first aspect, in an optional implementation manner, the reflection surface and the transmission surface are configured to output two paths of the split light beams to two target lenses respectively.

Based on the first aspect, in an optional implementation manner, at least one of the two split light beams output by the reflection surface and the transmission surface is split again by at least one of a beam splitter, a half mirror, or an electro-optical effect optical switch.

Based on the first aspect, in an optional implementation manner, the display device further includes a control unit, and the control unit is configured to drive the half-transparent mirror to rotate so as to conduct optical paths between the reflection surface and the transmission surface and the target lens respectively.

Based on the first aspect, in an optional implementation manner, the light selection module includes a mechanical optical switch, where the mechanical optical switch includes a driving element and a reflecting mirror, the driving element is configured to drive the reflecting mirror to rotate so as to rotate the reflecting mirror to a target angle, and a reflecting surface of the reflecting mirror at the target angle is configured to reflect the modulated light beam from the imaging engine to the target lens.

Based on the first aspect, in an optional implementation manner, the display device further includes a control unit, and the control unit is configured to control the driving element to drive the mirror to rotate to the target angle.

Based on the first aspect, in an optional implementation manner, the light selection module includes an electro-optical effect optical switch, where the electro-optical effect optical switch includes an input port and a plurality of output ports, the input port is configured to receive the modulated light beam from the imaging engine, a target output port of the electro-optical effect optical switch is configured to transmit the modulated light beam to the target lens, and the number of the target output ports is at least one.

Based on the first aspect, in an optional implementation manner, the display device further includes a control unit, and the control unit is configured to turn on an optical path between the input port and the target output port of the electro-optical effect optical switch.

Based on the first aspect, in an optional implementation manner, the control unit is configured to receive an indication message, where the indication message is used to instruct the control unit to turn on an optical path between the imaging engine and the target lens.

In an alternative implementation form according to the first aspect, the light selection module and each of the lenses are connected by an optical waveguide or an optical fiber.

And the light selection module is connected with each lens through an optical waveguide or an optical fiber. Then, the respective lenses can be laid out in the required areas according to the actual requirements for viewing the images. It can be seen that in a specific application, the lens can be laid out in different regions to meet the requirement of viewing the image at different regions. And the lens of the projection equipment is separated from the position of the imaging engine, so that the noise of the image viewed at the lens can be effectively reduced.

Based on the first aspect, in an optional implementation manner, a light homogenizing device is further disposed on a light path of a light beam emitted by the light source. The dodging device is used for dodging the light beam from the light source and transmitting the dodged light beam to the imaging engine. The light beam emitted by the light uniformizing device after light uniformization is in a state that a light field is uniformly distributed.

Therefore, the uniform light beam can be ensured to uniformly illuminate the imaging engine through the light homogenizing device, and the definition of an image formed by the display equipment is effectively improved.

In an optional implementation manner according to the first aspect, the light homogenizing device is a light bar. The aspect ratio of a cross-section of the light bar along the length of the light bar is equal or approximately equal to the aspect ratio of the imaging engine.

Therefore, the light beams output by the light emergent surface of the light bar can uniformly illuminate the imaging engine, and the definition of images formed by the display equipment is effectively improved.

In a second aspect, an embodiment of the present invention provides an imaging method, which is applied to a display device including a light source, an imaging engine, a control unit, and a plurality of lenses. The light source transmits a light beam to the imaging engine;

the imaging engine modulates the light beam to obtain a modulated light beam. The control unit selects a target lens from the plurality of lenses and controls the modulated light beam to be transmitted to the target lens. The target lens images the modulated light beam.

For the description of the beneficial effects shown in this aspect, please refer to the description in the first aspect, which is not described in detail.

Based on the second aspect, in an optional implementation manner, the selecting, by the control unit, a target lens from the multiple lenses, and controlling the modulated light beam to be transmitted to the target lens includes: the control unit controls the imaging engine to transmit the modulated light beam to the target lens.

Based on the second aspect, in an optional implementation manner, the display device further includes a light selection module, and after the imaging engine modulates the light beam to obtain a modulated light beam, the method further includes: the light selection module receives the modulated light beam from the imaging engine. The control unit selects a target lens from the plurality of lenses and controls the modulated light beam to be transmitted to the target lens, and the control unit comprises: the control unit controls the light selection module to transmit the modulated light beam to the target lens.

Based on the second aspect, in an optional implementation manner, the display device further includes a light selection module, and after the imaging engine modulates the light beam to obtain a modulated light beam, the method further includes: the light selection module receives the modulated light beam from the imaging engine. The light selection module splits the modulated light beam into N paths of split light beams, the number of the target lenses is N, and N is a positive integer greater than or equal to 2. The light selection module transmits one path of the split light beam to each target lens.

Based on the second aspect, in an optional implementation manner, the light selection module includes at least one of the following:

Based on the second aspect, in an optional implementation manner, the light selection module includes an optical splitter, the optical splitter includes an input port and N output ports, and after the imaging engine modulates the light beam to obtain a modulated light beam, the method further includes. The input port receives the modulated light beams from the imaging engine, and the N target lenses are used for respectively receiving the split light beams from the N output ports.

Based on the second aspect, in an optional implementation manner, the selecting, by the control unit, a target lens from the plurality of lenses, and controlling the modulated light beam to be transmitted to the target lens includes: the control unit drives the optical splitter to rotate so as to conduct the optical paths between the N target lenses and the N output ports.

Based on the second aspect, in an optional implementation manner, the light selection module includes a semi-transparent mirror having a reflection surface and a transmission surface, the imaging engine modulates the light beam to obtain a modulated light beam, and the method further includes: the reflection surface is used for receiving the modulated light beam from the imaging engine, and the reflection surface and the transmission surface are used for respectively outputting two paths of the split light beams.

Based on the second aspect, in an optional implementation manner, the selecting, by the control unit, a target lens from the plurality of lenses, and controlling the modulated light beam to be transmitted to the target lens includes: the control unit is used for driving the semi-transparent reflector to rotate so as to conduct light paths between the reflecting surface and the transmitting surface and the target lens respectively.

Based on the second aspect, in an optional implementation manner, the light selection module includes a mechanical optical switch, the mechanical optical switch includes a driving element and a reflecting mirror, the imaging engine modulates the light beam to obtain a modulated light beam, and the method further includes: the driving piece drives the reflector to rotate so as to rotate the reflector to a target angle, and the reflection surface of the reflector at the target angle reflects the modulated light beam from the imaging engine to the target lens.

Based on the second aspect, in an optional implementation manner, the selecting, by the control unit, a target lens from the plurality of lenses, and controlling the modulated light beam to be transmitted to the target lens includes: the control unit controls the driving piece to drive the reflecting mirror to rotate to the target angle.

Based on the second aspect, in an optional implementation manner, the light selection module includes an electro-optical effect optical switch, the electro-optical effect optical switch includes an input port and a plurality of output ports, and after the imaging engine modulates the light beam to obtain a modulated light beam, the method further includes: the input port receives the modulated light beams from the imaging engine, and the target output ports of the electro-optical effect optical switch transmit the modulated light beams to the target lens, wherein the number of the target output ports is at least one.

Based on the second aspect, in an optional implementation manner, the selecting, by the control unit, a target lens from the multiple lenses, and controlling the modulated light beam to be transmitted to the target lens includes: the control unit conducts the optical path between the input port of the electro-optical effect switch and the target output port.

Based on the second aspect, in an optional implementation manner, the method further includes: the control unit receives an indication message, and the indication message is used for indicating the control unit to conduct an optical path between the imaging engine and the target lens.

In an alternative implementation form according to the second aspect, the light selection module and each of the lenses are connected by an optical waveguide or an optical fiber.

Drawings

FIG. 1a is a diagram illustrating a first exemplary structure of a display device provided in the present application;

FIG. 1b is a diagram illustrating a first exemplary structure of a display device provided in the present application;

FIG. 2 is a diagram illustrating a third exemplary structure of a display device provided in the present application;

FIG. 3 is a diagram illustrating a fourth exemplary structure of a display device provided in the present application;

FIG. 4 is a diagram illustrating an exemplary list of operations provided by the present application;

FIG. 5 is a diagram illustrating a fifth exemplary embodiment of a display device provided in the present application;

FIG. 6 is a diagram illustrating a sixth exemplary structure of a display device according to the present application;

FIG. 7 is a diagram illustrating a seventh exemplary structure of a display device provided in the present application;

FIG. 8 is a flow chart illustrating steps of a first embodiment of an imaging method provided herein;

FIG. 9 is a flow chart illustrating steps of a second embodiment of an imaging method provided herein;

FIG. 10 is a flow chart illustrating steps of a third embodiment of an imaging method of the present application.

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.

The application provides a display device, which is described below with reference to the first embodiment:

example one

The display device shown in the embodiment has the advantages of high brightness, large display screen, flexible arrangement and the like. The display device is used for imaging, and a viewer can watch an image output by the display device. Alternatively, the viewer may directly view the image being displayed by the display device. As another example, an image emitted by a display device can be transmitted onto a display medium having diffuse reflective properties. The display medium may be a projection screen or a wall, and the like, and is not limited in particular. The display device shown in the present application can be applied to a portable display device, a home theater, a conference presentation, a movie showing, an outdoor display, a front light on a car, a tail light on a car, a pixel head light, a head-up display (HUD), and the like.

The structure of the display device provided by the present application is first described with reference to fig. 1a, where fig. 1a is a structural example diagram of a first embodiment of the display device provided by the present application.

The display device 100 provided by the present application includes a light source 101, an imaging engine 102, a control unit 104, and a plurality of lenses. The lenses may be lens 111, lens 112, lens 113 and lens 114 shown in fig. 1 a. The light source 101 is configured to transmit a light beam to the imaging engine 102, and the light source 101 shown in this embodiment may include a halogen lamp, a light-emitting diode (LED), a laser, an ultra-high pressure mercury bulb, a xenon lamp, and the like, which is not limited in this embodiment.

The imaging engine 102 is used to obtain an image source to be displayed, wherein the image source can be a video or a picture. Optionally, the imaging engine 102 shown in the present embodiment may include an external interface. The imaging engine 102 receives an image source from the terminal device 140 through the external interface. The external interface is connected to the terminal device 140. The external interface may be an external bus interface, a front side bus, a display interface, a video display interface, a graphics interface, or the like. The video display interface may be a Digital Video Interface (DVI), a High Definition Multimedia Interface (HDMI), a Video Graphics Array (VGA), or the like. Still alternatively, the imaging engine 102 shown in the present embodiment may include an internal interface. The internal interface of the imaging engine 102 is connected to the control unit 104. The imaging engine 102 receives an image source from the control unit 104 through the internal interface. The internal interface may be a bus, an input/output (I/O) bus, a hub interface bus, or the like. The imaging engine 102 is configured to modulate the light beam from the light source 101 according to the image source to obtain a modulated light beam corresponding to the image source. The imaging engine may be an LCD, DMD, or LCOS, among others.

The type of the control unit 104 is not limited in this embodiment, and for example, the control unit may be one or more field-programmable gate arrays (FPGAs), application Specific Integrated Circuits (ASICs), system on chips (socs), central Processing Units (CPUs), network Processors (NPs), digital signal processing circuits (DSPs), micro Controller Units (MCUs), programmable Logic Devices (PLDs) or other integrated chips, or any combination of the above chips or processors.

The imaging engine 102 of the present embodiment may transmit the modulated light beam to one or more lenses. The lens receiving the modulated light beam is used for imaging the modulated light beam. For example, imaging engine 102 may transmit the modulated light beam to lens 111. The lens 111 is used for imaging the modulated light beam. In particular, the imaging engine 102 includes one or more lenses. The lens is used for forming an enlarged real image of the modulated light beam. Wherein, the lens can be a convex lens or a concave lens.

Alternatively, if the display device shown in this embodiment is applied to the projection field, the images emitted by the lens 111, the lens 112, the lens 113, and the lens 114 shown in this embodiment can be respectively displayed on the projection screen 121, the projection screen 122, the projection screen 123, and the projection screen 124.

The control imaging engine 102 and each lens shown in the present embodiment may be connected through an optical waveguide or an optical fiber. The imaging engine 102 may transmit the modulated light beam capable of imaging to a lens for imaging under the control of the control unit 104. Then, the respective lenses can be laid out in the required areas according to the actual requirements for viewing the images. It can be seen that in a specific application, the lenses can be laid out in different regions to meet the requirement of viewing images at different regions. For example, the lens 111 is laid out at the area A1, the lens 112 is laid out at the area A2, the lens 113 is laid out at the area A3, and the lens 114 is laid out at the area A4. For example, if the display device is applied to a home scene, area A1 may be a bedroom, area A2 may be a kitchen, area A3 may be a living room, and area A4 may be a study room. As another example, if the display device is applied to an enterprise scene, then the area A1, the area A2, the area A3, and the area A4 may be different conference rooms or offices, and the like. As can be seen, the display device shown in this embodiment can implement imaging at a plurality of different regions by one imaging engine. For example, in a home scene, imaging of a plurality of regions can be realized by one display device without laying out a plurality of display devices in the plurality of regions, respectively. The layout difficulty of the display equipment is reduced, and the layout flexibility of the display equipment is improved. Since one display device can realize imaging at a plurality of different areas, the layout cost of the display device is reduced. According to the embodiment, a plurality of different display devices do not need to be arranged in a plurality of areas, the size and the noise of the display devices which form images in the plurality of areas can be reduced, and the viewing experience of audiences is improved.

The structure of the display device 130 provided by the present application can also be seen in fig. 1b, and the display device includes a light source 101, an imaging engine 102, and a plurality of lenses. For a detailed description, please refer to fig. 1a, which is not repeated. The display device 130 may further include a light selection module 103, the light selection module 103 being connected between the imaging engine 102 and the plurality of lenses.

The light selection module 103 shown in this embodiment may transmit the modulated light beam from the imaging engine 102 to one or more lenses. The lens receiving the modulated light beam is used for imaging the modulated light beam. For example, light selection module 103 may transmit the modulated light beam to lens 111. The lens 111 is used for imaging the modulated light beam. Specifically, the lens 111 includes one or more lenses. The lens is used for forming an enlarged real image of the modulated light beam. Wherein, the lens can be a convex lens or a concave lens.

For better understanding, the display device and the imaging method provided by the present application are described below with reference to a plurality of embodiments.

Example two

The structure of the display device shown in this embodiment can be seen in fig. 2, where fig. 2 is a structural example diagram of a third embodiment of the display device provided in this application.

Please refer to fig. 1a for a description of the light source 101 included in the display device shown in this embodiment, which is not described in detail. In the light path of the light beam emitted from the light source 101 shown in this embodiment, a first lens assembly 201 is further disposed. The first lens assembly 201 shown in this embodiment includes one or more lenses. The first lens assembly 201 is used for converging the light beam from the light source 101 to the dodging device. The dodging device shown in this embodiment dodges the light beam from the first lens assembly 201 and is used to transmit the dodged light beam to the imaging engine 203. The light beam emitted by the dodging device after dodging is in a state that a light field is uniformly distributed. The light-homogenizing device can ensure that the light beam uniformly illuminates the imaging engine 203, and the definition of an image formed by the display device is effectively improved.

The light homogenizing device shown in this embodiment may be the light bar 202 shown in fig. 2. The light bar is provided with a light inlet surface and a light outlet surface. The light incident surface is used for receiving the light beam from the first lens assembly 201. The light emitting surface is used for outputting the light beam after the light is homogenized. Specifically, the light beams incident through the light incident surface can effectively destroy the interference effect of the light beams after being reflected for multiple times on the inner circumferential surface of the light bar 202, so as to ensure that the light emergent surface can obtain the light beams with uniformly distributed light fields. The length of the light bar 202 and the number of times the light beam is reflected within the light bar 202 are shown in this embodiment to be in a positive correlation. That is, the longer the length of the light wand 202, the more times the light beam is reflected within the light wand 202. The shorter the length of the light wand 202, the fewer times the light beam is reflected within the light wand 202. In this embodiment, the light bar 202 can ensure that the light beam is reflected at least three times on the inner circumferential surface of the light bar 202, so as to ensure the light-homogenizing effect. The aspect ratio of the cross section along the length direction of the light bar 202 shown in this embodiment is equal to or approximately equal to the aspect ratio of the imaging engine 203, so as to ensure that the light beam output from the light emitting surface of the light bar 202 can uniformly illuminate the imaging engine 203, and effectively improve the definition of the image formed by the display device.

The dodging device shown in the embodiment can also be seen in fig. 3. Fig. 3 is a diagram illustrating a fourth exemplary structure of a display device provided in the present application. The dodging device shown in this example may be a compound eye lens (compound eye) 301 shown in fig. 3. In other examples, the light uniformizing device may also be an optical waveguide, an optical fiber, a transmission module with a hollow peripheral surface covering a reflector, and the like, which is not limited in this embodiment.

The present embodiment is exemplified by taking the imaging engine 203 as a DMD. The imaging engine 203 is capable of receiving a light beam from the dodging device. The embodiment does not limit how the light beam emitted by the dodging device is transmitted to the imaging engine 203. For example, the display device shown in this embodiment further includes a second lens assembly 204 and a first mirror 205. The second lens assembly 204 converges the light beam from the light bar 202 to the first mirror 205. The first reflector 205 is used to reflect the light beam to the imaging engine 203, so as to ensure that the light beam emitted from the first reflector 205 uniformly illuminates the imaging engine 203.

The imaging engine 203 shown in this embodiment is used to modulate a light beam to output a modulated light beam. Specifically, the imaging engine 203 includes a plurality of micro-mirrors, and each micro-mirror corresponds to each pixel imaged by a lens of the display device. For example, if the image formed by the lens of the display device includes M pixels, the imaging engine 203 includes M micro-lenses. The arrangement form of the M pixels and the M micro lenses is the same. For example, the M pixels and the M micro-mirrors are arranged in s rows and p columns. Wherein s and p are both positive integers greater than 1. Each micro lens is used for reflecting one of the sub-beams corresponding to the M pixels included in the light beam. For example, if M1 pixels in the lens image need to be black, the M1 micro-mirror included in the imaging engine 203 corresponding to the M1 pixels transmits the sub-beams corresponding to the M1 pixels out of the light selection module 206. It is known that the light selection module 206 does not transmit the sub-beam corresponding to the M1 pixel to the lens. The sub-beams corresponding to the M1 pixels are not imaged on the lens. Then the pixel corresponding to the sub-beam corresponding to the M1 pixel appears black. For another example, if M2 pixels in the lens image need to be bright, then the M2 micro-mirror included in the imaging engine 203 corresponding to the M2 pixels transmits the sub-beams corresponding to the corresponding M2 pixels to the light selection module 206. It is understood that the light selection module 206 can transmit the sub-beam corresponding to the M2 pixel to the lens. The sub-beams corresponding to the M2 pixels are imaged on the lens. Then the pixel corresponding to the sub-beam corresponding to the M2 pixel is bright.

The control unit shown in this embodiment can adjust the deflection angle of each micromirror, thereby controlling whether each micromirror can transmit the corresponding sub-beam to the light selection module 206. The deflection angle of each micromirror also determines the amount of optical power of the sub-beams transmitted to the light selection module 206 by the reflection of the micromirror. The magnitude of the optical power of the sub-beam transmitted to the light selection module 206 is in positive correlation with the brightness of the corresponding pixel of the sub-beam on the lens. It can be seen that the deflection angle of each micromirror included in the imaging engine 203 is controlled by the control unit to determine the imaging of each pixel of the lens.

It should be clear that, in the present embodiment, the display device includes the light selection module as an example for illustration, and is not limited. In other examples, the display device may not include the light selection module. The processing unit controls whether each micro lens can transmit the corresponding sub beam to a target lens needing imaging or not by adjusting the deflection angle of each micro lens.

As can be seen, all the sub-beams emitted by the imaging engine 203 form modulated beams. The light selection module 206 shown in this embodiment may select a target lens from a plurality of lenses included in the display device after receiving the modulated light beam. The light selection module 206 images the modulated light beam through the selected target lens. For example, the lens 207 shown in fig. 2 is disposed in a bedroom where the viewer needs to view the image. The light selection module 206 is then able to transmit the modulated light beam to the lens 207 via the optical waveguide 208. A projection screen 211 may also be disposed in the bedroom at a corresponding position of the lens 207 to ensure that the viewer can view the image of the lens 207 on the projection screen 211. As another example, the lens 209 shown in fig. 2 is placed in a living room where the viewer needs to view the image. The light selection module 206 is then able to transmit the modulated light beam to the lens 209 via the optical waveguide 210. A projection screen 212 may also be positioned in the living room at a corresponding location on the lens 209 to ensure that the viewer can view the image of the lens 209 on the projection screen 212.

It should be understood that, the image formed by the objective lens is displayed on the projection screen for exemplary illustration and not limitation in this embodiment. The image of the object lens can also be displayed on any display medium with diffuse reflection properties as shown in fig. 1 a. For example, an image of the subject lens is displayed on a wall or the like. Still alternatively, the image of the target lens may be displayed at an arbitrary position in free space, or the like. The audience can also interact with the image of the target shot, such as a user interface (user interface), so as to realize human-computer interaction and the like.

The display device shown in this embodiment can also form a color image on the lens. For example, the light source 101 shown in the present embodiment includes at least one first laser, at least one second laser, and at least one third laser. The first laser is used to transmit a first beam of light in the color red to the imaging engine 203. The second laser is used to transmit the second beam of light in the green color to the imaging engine 203. The third laser is used to transmit the third light beam in the blue color to the imaging engine 203. The imaging engine 203 receives the first, second, and third light beams in sequence. The imaging engine 203 sequentially modulates to transmit the first modulated light beam, the second modulated light beam, and the third modulated light beam to the target lens. For a specific modulation process, please refer to the above description, which is not repeated. The target lens superimposes the first modulated light beam, the second modulated light beam, and the third modulated light beam to form a color image on the target lens. It should be clear that the description of the process of forming color images by the display device in this embodiment is an optional example and is not limited. For example, a color wheel may be included between the light source 101 and the imaging engine 203. The color wheel is configured to sequentially receive a first light beam, a second light beam and a third light beam in white light from the light source 101. The color wheel is used for sequentially converting the first light beam, the second light beam and the third light beam into red light, green light and blue light. The imaging engine 203 receives the first, second, and third light beams in sequence. The imaging engine 203 sequentially modulates to transmit the first modulated light beam, the second modulated light beam, and the third modulated light beam to the target lens. The target lens superimposes the first modulated light beam, the second modulated light beam, and the third modulated light beam to form a color image on the target lens.

In this embodiment, the light selection module 206 needs to transmit the modulated light beam to the target lens for imaging among a plurality of lenses. Several alternative configurations of the light selection module 206 are described below:

alternative Structure 1

The light selection module 206 shown in this example is a mechanical optical switch. The mechanical optical switch includes a driving member and a reflecting mirror. The reflector has a reflective surface. The shape of the reflector is not limited in this embodiment, and the reflector may be a plane reflector, a spherical reflector, an aspherical reflector, or the like. Under the condition that the reflecting mirrors are at different angles, the reflecting mirrors can transmit the modulated light beams to different lenses. The driving piece is used for driving the reflector to rotate so as to rotate the reflector to different angles. Taking the example shown in fig. 2, the display device includes three lenses, i.e., a lens 207, a lens 213, and a lens 209. The control unit shown in this embodiment may configure a first control list, which may be shown in table 1:

TABLE 1

Electrical signals	Target angle	Lens barrel
			First electric signal	First target angle	Lens	207
Second electrical signal	Second target angle	Lens					213
			Third electrical signal	Third target angle	Lens	209

As can be seen from table 1, the control unit creates a correspondence relationship of different electric signals, target angles, and lenses. The driving member shown in the present embodiment may be a Micro Electro Mechanical System (MEMS). The control unit and the mirror are respectively connected with the MEMS. The MEMS is used for driving the mirror to rotate, so that the mirror can rotate to different angles under the driving of the MEMS. The present embodiment is exemplified by taking an example that the control unit drives the mirror to rotate through the MEMS, and in other examples, the control unit may also drive the mirror to rotate through other devices, such as a motor and the like. The MEMS-driven mirror shown in this example can effectively reduce loss and crosstalk.

If the control unit determines that imaging of the lens 207 is required, the control unit may input a first electrical signal to the MEMS. The MEMS drives the mirror to rotate to a first target angle according to the first electric signal. The reflective surface of the mirror at the first target angle can transmit the modulated light beam from the imaging engine 203 to the optical waveguide 208. The modulated light beam can be transmitted to the lens 207 via the optical waveguide 208 to realize imaging on the lens 207. By analogy, if the control unit determines that imaging of the lens 209 is required, the control unit may input a third electrical signal to the MEMS. The MEMS drives the mirror to rotate to a third target angle according to a third electric signal. The reflective surface of the mirror at the third target angle can transmit the modulated light beam from the imaging engine 203 to the optical waveguide 210. The modulated light beam can be transmitted to the lens 209 via the optical waveguide 210 to realize imaging on the lens 209.

Alternative Structure 2

The light selection module 206 shown in this example is an electro-optic effect optical switch. The electro-optical effect optical switch comprises an input port and a plurality of output ports, the input port is used for receiving the modulated light beams from the imaging engine, and the plurality of output ports of the electro-optical effect optical switch are respectively connected with the plurality of optical waveguides. For example, if the display device includes three optical waveguides, namely optical waveguide 208, optical waveguide 214, and optical waveguide 210. Then, the three output ports included in the electro-optical effect optical switch are respectively connected to the three optical waveguides. I.e. the first output port comprised by the electro-optical effect optical switch is connected to the optical waveguide 208. The second output port is connected to optical waveguide 214. The third output port is connected to the optical waveguide 210.

The electro-optical effect optical switch forms a Mach-Zehnder interference structure. The control unit can change the refractive index of the electro-optical effect optical switch by loading different voltages to the electro-optical effect optical switch. And the on-off of the input port and each output port is realized by utilizing the interference effect. Specifically, the control unit determines a target output port to which a target lens for imaging is connected through an optical waveguide or an optical fiber. The control unit may conduct an optical path between the input port and the target output port. So as to realize the purpose of transmitting the modulated optical signal input by the input port to the target lens. The control unit shown in this embodiment may configure a second control list, which may be shown in table 2:

TABLE 2

Voltage of	On-off condition	Lens barrel
			First voltage	The input port is connected with the first output port	Lens	207
Second voltage	The input port is conducted with the second output port	Lens					213
			Third voltage	The input port is conducted with the third output port	Lens	209

As shown in table 2, the control unit creates different corresponding relationships between voltages, on/off states, and lenses. If the control unit determines that the lens 207 is required to image, the control unit may apply a first voltage to the electro-optic effect optical switch. So as to realize the conduction of the optical path between the input port and the first output port. The modulated optical signal output from the first output port is transmitted to the lens 207 via the optical waveguide 208. By analogy, if the control unit determines that imaging of the lens 209 is required, the control unit may apply a third voltage to the electro-optical effect optical switch. So as to realize the conduction of the optical path between the input port and the third output port. The modulated optical signal output from the third output port is transmitted to the lens 209 via the optical waveguide 210.

In other examples, the control unit may further change the conduction of the optical path between the input port and the target output port by a magneto-optical effect, an acousto-optical effect, a thermo-optical effect, or the like.

The following optionally explains how the control unit determines the procedure of the target lens for imaging:

the display device shown in this embodiment can display an operation list. The operation list is used for receiving indication information input by a viewer. The indication message is used for indicating the target shot. For example, an operation list 401 as shown in fig. 4 may be displayed on a touch screen of the display device. Fig. 4 is a diagram of an exemplary embodiment of an operation list provided in the present application. The touch screen shown in the present embodiment detects a touch event input by a viewer through a touch or gesture operation thereon, and transmits the touch event to the control unit to determine an indication message corresponding to the touch event. For example, the operation list 401 includes three different touch modules. When the viewer touches the "bedroom display" touch module, the touch screen sends a first touch event to the control unit. The control unit generates a first indication message according to the first touch event. The target lens 207 is disposed in the bedroom, and the first indication message is used to control the light selection module 206 to transmit the modulated light signal to the target lens 207. Likewise, when the viewer touches the touch module of the "living room display", the touch screen transmits a second touch event to the control unit. The control unit generates a second indication message according to the second touch event. The target lens 209 is placed in the living room, and the second indication message is used to control the light selection module 206 to transmit the modulated light signal to the target lens 209, and so on.

It should be clear that, the description of the process of acquiring the indication message by the control unit shown in this embodiment is an optional example, and is not limited. For example, in other examples, the viewer may also input an indication message to the display device by voice, text input. As another example, the viewer may enter an indication message on a terminal device connected to the display device. The terminal device sends the indication message to a control unit, and the like.

It is understood that imaging in a plurality of areas can be realized by only one display device as shown in the present embodiment. Different display equipment does not need to be arranged in different areas, so that the layout difficulty of the display equipment is reduced, and the flexibility of the layout of the display equipment is improved. Since one display device can realize imaging at a plurality of different regions, the layout cost of the display device is reduced. The embodiment can reduce the volume and noise of the display device imaging in a plurality of areas, and improve the viewing experience of audiences.

EXAMPLE III

In the second embodiment, the number of target shots is taken as an example. That is, in the second embodiment, the display apparatus is imaged through only one objective lens. The display device shown in the present embodiment includes a plurality of object lenses. It is understood that the display apparatus shown in the present embodiment simultaneously images through a plurality of object lenses. For example, if two objective lenses included in the display device are respectively disposed in a bedroom and a living room, the display device can simultaneously image in the bedroom and the living room, and the imaging efficiency of the display device is improved. The structure of the display device shown in this embodiment can be seen in fig. 5, where fig. 5 is a diagram illustrating a fifth embodiment of the display device provided in this application.

The display device shown in this embodiment comprises a light source 501, a light unifying device 502, and an imaging engine 503. Please refer to embodiment two for specific descriptions of the light source 501, the light uniformizing device 502, and the imaging engine 503, which are not described in detail in this embodiment. The light selection module 504 included in the display device shown in this embodiment is configured to receive the modulated light beam from the imaging engine 503, and please refer to embodiment two for a detailed description of the modulated light beam, which is not described in detail herein.

The light selection module 504 shown in this embodiment is configured to split the modulated light beam into N split light beams. Wherein, the value of N is any positive integer greater than or equal to 2. The display device needs to image at N target shots simultaneously. It can be seen that the light selection module 504 can transmit the N split light beams to the N target lenses respectively. So as to realize that the light beams after N paths of light splitting are respectively imaged on N target lens. Please refer to embodiment two for a description of the target lens imaging, which is not described in detail in this embodiment.

Taking fig. 5 as an example, the display device includes two object lenses, namely an object lens 511 and an object lens 512. It should be clear that, the number of lenses included in the display device is not limited in this embodiment. The light selection module 504 can split the modulated light beam into a first split light beam and a second split light beam. The light selection module 504 transmits the first split light beam to the objective lens 511. The light selection module 504 transmits the second split beam to the target lens 512. In this embodiment, the ratio of the optical power of the first split light beam and the optical power of the second split light beam is not limited.

The following optionally describes the structure of the light selection module 504 capable of respectively transmitting N split light beams to N target lenses in this embodiment:

alternative Structure 1

The light selection module 504 shown in this example may be a transflective mirror. One surface of the semi-transparent and semi-reflective mirror is a reflecting surface, and the other surface is a transmitting surface. The reflective surface of the transflective mirror is capable of receiving the modulated light beam from the imaging engine 503. The transmissive surface of the semi-transmissive half mirror is aligned with the input port of the optical waveguide 521. It can be seen that the transmission surface of the half mirror can transmit the first split light beam included in the modulated light beam to the optical waveguide 521. The optical waveguide 521 transmits the first split light beam to the target lens 511. The reflective surface of the transflective mirror is aligned with the input port of the optical waveguide 522. It is understood that the reflection surface of the half mirror can transmit the second split light beam included in the modulated light beam to the optical waveguide 522. The optical waveguide 522 transmits the second split light beam to the lens 512.

The present example is exemplified by the display device including two lenses, and is not limited thereto. If the display device comprises more than two lenses, the control unit can drive the semi-transparent reflector to rotate so as to realize the conduction of the light paths between the reflecting surface and the transmitting surface of the semi-transparent reflector and two different light waveguides. And further realize the imaging of two different target lenses.

Alternative Structure 2

The light selection module shown in this example may be a beam splitter. The optical splitter includes an input port and N output ports. The input port receives the modulated light beam from the imaging engine 503. The optical splitter is used for splitting the modulated light beam to form N split light beams. The N output ports of the optical splitter are respectively connected with the N target lenses through optical waveguides or optical fibers. So as to ensure that the N target lenses can respectively receive the split light beams from the N output ports.

For example, fig. 6 is a diagram illustrating a structure of a display device according to a sixth embodiment of the present application, where fig. 6 is a diagram illustrating a structure of a display device according to the sixth embodiment of the present application. The light selection module 601 shown in fig. 6 is a beam splitter. The optical splitter includes an input port and 2 output ports. The input port receives the modulated light beam from the imaging engine 503. The optical splitter is used for splitting the modulated light beam to form 2 paths of split light beams. 2 output ports of the optical splitter are respectively connected with 2 target lenses through optical waveguides or optical fibers. For example, the output port 611 of the optical splitter is connected to the optical waveguide 521. The output port 612 of the optical splitter is connected to an optical waveguide 522. It can be seen that the first split light beam output from the output port 611 is transmitted to the objective lens 511 via the optical waveguide 521, so as to be imaged on the objective lens 511. The second split light beam output from the output port 612 is transmitted to the target lens 512 via the optical waveguide 522 to be imaged on the target lens 512.

In this embodiment, the output port 611 of the optical splitter and the input port of the optical waveguide 521 are not aligned. It can be seen that the first split optical beam output from the output port 611 cannot be transmitted to the optical waveguide 521. And/or the output port 612 is misaligned with the input port of the optical waveguide 522. It can be seen that the split light beam output from the output port 612 cannot be transmitted to the optical waveguide 522. To this end, the control unit may drive the splitter to rotate to conduct the optical path between the output port 611 of the splitter and the input port of the optical waveguide 521. And to conduct the optical path between the output port 612 and the input port of the optical waveguide 522. To ensure that the first split beam can be imaged on the objective lens 511, and also to ensure that the second split beam can be imaged on the objective lens 512.

The present example is exemplified by the display device including two lenses, and is not limited thereto. If the display device includes more than two lenses, the control unit can drive the optical splitter to rotate, so as to realize the conduction of the optical paths between the output port of the optical splitter and different optical waveguides. And further, the purpose that the output port of the optical splitter can transmit the split light beams to different target lenses is achieved. The number of output ports of the optical splitter is not limited in this embodiment.

Optional Structure 3

The light selection module shown in this example may be an electro-optic effect optical switch. For a specific description of the electro-optical effect optical switch, please refer to the second embodiment, which is not described in detail. In the scenario shown in this embodiment, the control unit loads different voltages to the electro-optical effect optical switch to achieve the purpose of conducting the input port of the electro-optical effect optical switch and two or more target output ports. It can be known that the electro-optical effect optical switch can output the split light beams through two or more target output ports respectively.

The light selection module shown in this embodiment may further include two or more of a mechanical optical switch, a beam splitter, a half mirror, or an electro-optical effect optical switch, which is not limited specifically. The present embodiment exemplifies that the light selection module is used for splitting the modulated light beam from the imaging engine to output a multi-split light beam. In other examples, the display device may also include a light splitting unit to split the modulated light beam from the imaging engine to output N split light beams. The display device includes N imaging engines. The N imaging engines respectively modulate the N paths of split light beams to output the modulated N paths of split light beams. And the one or more light selection modules transmit the N paths of split light beams to the N target lenses respectively.

By adopting the display equipment shown in the embodiment, the purpose that the display equipment simultaneously images in a plurality of areas can be realized, and the imaging efficiency is effectively improved. And imaging is carried out in a plurality of areas simultaneously, a plurality of display devices do not need to be arranged, and the cost for arranging the display devices is reduced.

Example four

In the second and third embodiments, the DMD is taken as an example of the imaging engine, and in the present embodiment, the LCOS or the LCD is taken as an example of the imaging engine. The structure of the display device shown in this embodiment can be seen in fig. 3, where the imaging engine 303 shown in fig. 3 is an LCOS. The display device shown in this embodiment comprises a light source 302, a light unifying device 301, and an imaging engine 303. For a detailed description of the light source 302 and the light uniformizing device 301, please refer to the second embodiment, which is not described in detail. For a specific description of the modulated light beam, please refer to embodiment two, which is not repeated herein for details.

The display device shown in this embodiment includes a polarization processing module 306. The polarization processing module 306 may be a polarization converter, a polarizer, a polarization beam splitter, a wave plate, or the like. The polarization processing module 306 is used for converting the polarization state of the light beam from the light unifying device 301 into S polarization. The S-polarized light beam emitted from the polarization processing module 306 can be transmitted to a Polarization Beam Splitter (PBS) 305. The PBS is located between the imaging engine 303 and the light selection module 304.

The PBS305 transmits the beam with S polarization to the imaging engine 303. The imaging engine 303 includes a plurality of mirrors. Each mirror corresponds to each pixel imaged with the lens of the display device. For a specific description, reference may be made to the description of the micromirror plate shown in the second embodiment, where the description corresponds to each pixel imaged by the lens of the display device, and details are not repeated here. It is known that each mirror is used to reflect a sub-beam comprised by the beam. For example, if M1 pixels in the lens image need to be black, then the M1 mirror included in the imaging engine 303 corresponding to the M1 pixels does not change the polarization state of the sub-beams corresponding to the M1 pixels. It can be seen that the polarization state of the sub-beam corresponding to the M1 pixel is also S-polarized. The M1 mirror transmits the sub-beam corresponding to the M1 pixel with S polarization to the PBS305. The PBS305 reflects the sub-beam corresponding to the M1 pixel with the S polarization, so that the sub-beam corresponding to the M1 pixel is transmitted out of the light selection module 206. It is known that the light selection module 304 does not transmit the sub-beam corresponding to the M1 pixel to any one of the lenses. The sub-beam corresponding to the M1 pixel is not imaged on the lens. Then the pixel corresponding to the sub-beam corresponding to the M1 pixel appears black. As another example, if an M2 pixel in the lens imaging needs to be bright, an M2 mirror included in the imaging engine 303 corresponding to the M2 pixel converts the polarization state of the sub-beam corresponding to the corresponding M2 pixel into a P polarization state. The M2 mirror transmits the sub-beam corresponding to the M2 pixel with P polarization to the PBS305. The PBS305 is capable of passing the P-polarized sub-beam corresponding to the M2 pixel, thereby causing the sub-beam corresponding to the M2 pixel to be transmitted to the light selection module 304. It is understood that the light selection module 304 can transmit the sub-beam corresponding to the M2 pixel to the lens. The sub-beams corresponding to the M2 pixels are imaged on the lens. Then the pixel corresponding to the sub-beam corresponding to the M2 pixel is bright.

The control unit shown in this embodiment can adjust the deflection angle of each mirror, and the deflection angle of each mirror can also determine the magnitude of the optical power of the sub-beam corresponding to the pixel transmitted to the light selection module 304 via the mirror. The magnitude of the optical power of the sub-beam corresponding to the pixel transmitted to the light selection module 304 has a positive correlation with the brightness of the corresponding pixel of the sub-beam corresponding to the pixel on the lens. It can be seen that the deflection angle of each mirror included in the imaging engine 303 is controlled by the control unit to determine the brightness of each pixel of the lens.

It should be clear that, in the present embodiment, the display device includes the light selection module 304 as an example for illustration, which is not limited. In other examples, the display device may not include the light selection module 304. The control unit controls the position of the light exit surface of the imaging engine 303. For example, the control unit is connected to a motor, and the motor is used for driving the light emitting surface of the imaging engine 303 to rotate. For example, if the display device comprises a first light guide and a second light guide. If the control unit controls the optical path between the light emitting surface of the imaging engine 303 and the first optical waveguide to be in a conducting state through the motor. Then, the imaging engine transmits the modulated light beam to the first lens connected to the first optical waveguide through the first optical waveguide for imaging. For another example, if the control unit controls the optical path between the light emitting surface of the imaging engine 303 and the second optical waveguide to be in a conducting state through the motor. Then, the imaging engine can transmit the modulated light beam to a second lens connected to the second optical waveguide via the second optical waveguide for imaging.

For a description of how to form an image on one or more target lenses in the case that the imaging engine 303 is an LCOS, please refer to embodiment two or embodiment three, which is not repeated herein.

The imaging engine shown in this embodiment may also be an LCD. The imaging engine can be described with reference to fig. 7, where fig. 7 is a diagram illustrating a seventh exemplary structure of a display device provided in the present application. The display device shown in fig. 7 includes a light source 701, a light unifying device 702, and a polarization processing module 703. For a detailed description of the light source 701 for emitting white light, the light uniformizing device 702, the polarization processing module 703 and the PBS704, please refer to fig. 3, which is not repeated herein.

The display apparatus shown in the present embodiment includes three imaging engines, i.e., a first imaging engine 711, a second imaging engine 712, and a third imaging engine 713. The display apparatus further includes a first color filter member 721 and a second color filter member 722. The first color filter 721 or the second color filter 722 shown in the present embodiment may be a dichroic mirror, or a dichroic mirror. The first color filter 721 receives the light beam having S polarization from the polarization processing module 703. The first color filter 721 is used to obtain a first sub-wavelength light beam in red from the light beam. The first color filter 721 transmits the first sub-wavelength light beam in red to the first imaging engine 711. The first imaging engine 711 modulates the first sub-wavelength beam in red to transmit the modulated first sub-wavelength beam to the prism assembly 704. The first color filter 721 also serves to extract a second sub-beam of green light and a third sub-beam of blue light from the light beam. The first color filter 721 functions to reflect the second sub-beam and the second sub-beam to the second color filter 722 via the second reflecting mirror 706. The second color filter 722 is used to transmit the second sub-beam of green light to the second imaging engine 712. The second imaging engine 712 modulates the second sub-beam of green light to transmit the modulated second sub-wavelength beam to the prism assembly 704. The second color filter 722 is further used for transmitting the third sub-beam in the form of blue light to the third imaging engine 713 via the third mirror 707 and the fourth mirror 708 in sequence. The third imaging engine 713 modulates the third sub-beam of blue light to transmit the modulated third sub-wavelength beam to the prism assembly 704. Taking the first imaging engine 711 as an example, M color filters are disposed on the upper substrate glass of the first imaging engine 711. The control unit changes the rotation direction of each color filter to modulate M pixels of an image formed by the lens of the display device, for a specific process, please refer to embodiment two or embodiment three, which is not described herein.

Specifically, the prism assembly 704 of the present embodiment needs to receive the modulated first sub-beam, the modulated second sub-beam, and the modulated third sub-beam. The description of the specific receiving manner is an optional example and is not limited. The prism assembly 704 shown in this embodiment is used for converging the modulated first sub-beam, the modulated second sub-beam and the modulated third sub-beam to form a modulated light beam. The prism assembly 704 of the present embodiment can be a crossed two-way prism.

The display device comprises a light selection module 705 for transmitting the modulated light beam to one or more target lenses for imaging at the one or more target lenses. For a description of a specific process of the light selection module 705 transmitting the modulated light beam to one or more target lenses, please refer to the description of the light selection module shown in embodiment two or embodiment three, which is not described in detail.

For a description of the beneficial effects shown in this embodiment, please refer to the second embodiment or the third embodiment, which will not be described in detail.

EXAMPLE five

The embodiment provides an imaging method based on a display device. Referring specifically to fig. 8, fig. 8 is a flowchart illustrating steps of a first embodiment of the imaging method provided in the present application. The method shown in this embodiment may be based on the display device shown in embodiment two or embodiment four, and for the specific description of the display device, please refer to the description shown in embodiment two or embodiment four, which is not repeated in detail.

Step 801, a light source transmits a light beam to an imaging engine.

Step 802, the imaging engine modulates the light beam to obtain a modulated light beam.

Step 803, the imaging engine transmits the modulated light beam to the light selection module.

Step 804, the light selection module transmits the modulated light beam to a target lens.

Alternatively, if the light selection module shown in this embodiment includes a mechanical optical switch, the mechanical optical switch includes a driving member and a reflecting mirror. For a specific description of the mechanical optical switch, please refer to the second embodiment, which is not repeated herein. The control unit included in the display device controls the driving member to drive the mirror to rotate to the target angle. The reflective surface of the mirror at the target angle receives the modulated light beam from the imaging engine. And the reflection surface of the reflector at the target angle transmits the modulated light beam to the target lens. For a specific process of the control unit controlling the rotation of the mirror, please refer to embodiment two, which is not described in detail.

Optionally, if the light selection module shown in this embodiment includes an electro-optical effect optical switch, please refer to embodiment two for a specific description of the electro-optical effect optical switch, which is not described in detail. The electro-optical effect optical switch includes an input port and a plurality of output ports. The input port receives the modulated light beam from the imaging engine. The control unit conducts an optical path between the input port and the target output port. So as to ensure that the modulated light beam is transmitted to the target lens by the target output port of the electro-optical effect optical switch. For a specific process of the control unit controlling the electro-optical effect optical switch to conduct the optical path between the input port and the target output port, please refer to embodiment two in detail, which is not described in detail.

Step 805, the modulated light beam is imaged by the target lens.

For a description of a specific process of each device included in the display device shown in this embodiment to execute the imaging method, please refer to embodiment two or embodiment four, which is not described in detail. For a description of the beneficial effects shown in this embodiment, please refer to embodiment two or embodiment four, which are not described in detail.

Example six

In the imaging method shown in the fifth embodiment, the number of objective lenses is taken as one example. That is, in embodiment five, the display apparatus is imaged through only one objective lens. And the display device shown in the present embodiment includes a plurality of object lenses. It can be known that the imaging method shown in the present embodiment can simultaneously image through a plurality of object lenses. For a specific description of the display device based on the imaging method shown in this embodiment, please refer to embodiment three or embodiment four, which is not described in detail. Fig. 9 shows a method of the present embodiment, wherein fig. 9 is a flowchart illustrating steps of a second embodiment of an imaging method provided by the present application.

Step 901, a light source transmits a light beam to an imaging engine.

Step 902, the imaging engine modulates the light beam to obtain a modulated light beam.

Step 903, the imaging engine transmits the modulated light beam to the light selection module.

Step 904, the light selection module splits the modulated light beam into N split light beams.

Step 905, the light selection module transmits the split light beam to each target lens of the N target lenses.

For example, the light selection module shown in this embodiment may be a transflective mirror. The transflective mirror has a reflective surface and a transmissive surface, and for a description of the structure of the transflective mirror, please refer to embodiment three or embodiment four, which is not described in detail. The semi-transparent semi-reflecting mirror divides the modulated light beam into two paths of divided light beams. The reflecting surface and the transmitting surface of the split light beam respectively transmit the two split light beams to the two target lenses. For a description of a specific light splitting process, please refer to embodiment three or embodiment four, which is not described in detail.

As another example, the light selection module may be a beam splitter. The optical splitter is used for splitting the modulated light beam into N paths of split light beams. For a description of a specific process of the light splitting of the light splitter, please refer to embodiment three or embodiment four, which is not described in detail.

As another example, the light selection module may be an electro-optic effect optical switch. The electro-optical effect optical switch splits the modulated light beam into N paths of split light beams. For a description of a specific process of splitting light by an electro-optical effect optical switch, please refer to embodiment three or embodiment four, which is not described in detail.

And step 906, imaging the modulated light beam by the target lens.

For a description of a specific process of each device included in the display device shown in this embodiment to execute the imaging method, please refer to embodiment three or embodiment four, which is not described in detail. For a description of the beneficial effects shown in this embodiment, please refer to embodiment three or embodiment four, which is not described in detail.

EXAMPLE seven

The embodiment provides an imaging method based on a display device. Referring specifically to fig. 10, fig. 10 is a flowchart illustrating steps of a third embodiment of the imaging method provided in the present application. For a specific description of the display device, please refer to the description of fig. 1a in the first embodiment, which is not repeated herein.

Step 1001, a light source transmits a light beam to an imaging engine.

Step 1002, the imaging engine modulates the light beam to obtain a modulated light beam.

Steps 1001 to 1002 in this embodiment can be referred to as steps 801 to 802 in the fifth embodiment, and are not described in detail.

And step 1003, the control unit controls the imaging engine to transmit the modulated light beam to the target lens.

The description of the process of controlling the imaging engine to directly transmit the modulated light beam to the target lens by the control unit can be seen in fig. 1a, which is not described in detail.

And step 1004, imaging the modulated light beam by the target lens.

The execution process of step 1004 shown in this embodiment is shown in step 805 shown in fig. 8, and is not described in detail herein.

Please refer to fig. 1a for a description of the beneficial effects shown in this embodiment, which is not repeated herein.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The display equipment is characterized by comprising a light source, an imaging engine, a control unit and a plurality of lenses;

the light source is used for transmitting a light beam to the imaging engine;

the imaging engine is used for modulating the light beam to obtain a modulated light beam;

the control unit is used for selecting a target lens from the plurality of lenses and controlling the modulated light beam to be transmitted to the target lens, and the target lens is used for imaging the modulated light beam.

2. The display device according to claim 1, wherein the control unit is configured to select a target lens from the plurality of lenses and control transmission of the modulated light beam to the target lens comprises:

the control unit is used for controlling the imaging engine and transmitting the modulated light beam to the target lens.

3. The display device of claim 1, further comprising a light selection module;

the light selection module is used for receiving the modulated light beam from the imaging engine;

the control unit is used for controlling the light selection module and transmitting the modulated light beam to the target lens.

4. The display device of claim 1, further comprising a light selection module;

the optical selection module is used for splitting the modulated light beam into N split light beams, the number of the target lenses is N, the optical selection module is used for transmitting one split light beam to each target lens, and N is a positive integer greater than or equal to 2.

5. The display device of claim 4, wherein the light selection module comprises at least one of:

6. The display device of claim 4, wherein the light selection module comprises a beam splitter, the beam splitter comprising an input port and N output ports, the input port being configured to receive the modulated light beams from the imaging engine, and N of the objective lenses being configured to receive the split light beams from the N output ports, respectively.

7. The display device according to claim 6, wherein the control unit is configured to drive the beam splitter to rotate so as to conduct the optical paths between the N objective lenses and the N output ports.

8. The display device of claim 4, wherein the light selection module comprises a semi-transparent mirror having a reflective surface and a transmissive surface, the reflective surface is configured to receive the modulated light beams from the imaging engine, and the reflective surface and the transmissive surface are configured to output two of the split light beams respectively.

9. The display device according to claim 8, wherein the control unit is configured to drive the half-mirror to rotate so as to conduct optical paths between the reflection surface and the transmission surface and the target lens, respectively.

10. The display device of claim 3, wherein the light selection module comprises a mechanical light switch, the mechanical light switch comprising a driver and a mirror, the driver configured to drive the mirror to rotate the mirror to a target angle, a reflective surface of the mirror at the target angle configured to reflect the modulated light beam from the imaging engine to the target lens.

11. The display device according to claim 10, wherein the control unit is configured to control the driving member to drive the mirror to rotate to the target angle.

12. The display device according to any one of claims 3 to 5, wherein the light selection module comprises an electro-optic effect optical switch, the electro-optic effect optical switch comprising an input port and a plurality of output ports, the input port being configured to receive the modulated light beams from the imaging engine, the target output ports of the electro-optic effect optical switch being configured to transmit the modulated light beams to the target lens, the number of the target output ports being at least one.

13. The display device of claim 12, wherein the control unit is configured to turn on an optical path between the input port and the target output port of the electro-optical effect switch.

14. The display device according to any one of claims 1 to 13, wherein the control unit is configured to receive an instruction message instructing the control unit to turn on an optical path between the imaging engine and the objective lens.

15. The display device according to any one of claims 3 to 12, wherein the light selection module and each of the lenses are connected by an optical waveguide or an optical fiber.

16. The imaging method is applied to a display device, and the display device comprises a light source, an imaging engine, a control unit and a plurality of lenses;

the light source transmits a light beam to the imaging engine;

the imaging engine modulates the light beam to obtain a modulated light beam;

the control unit selects a target lens from the plurality of lenses and controls the modulated light beam to be transmitted to the target lens;

the target lens images the modulated light beam.

17. The imaging method according to claim 16, wherein the control unit selects a target lens from the plurality of lenses and controls the transmission of the modulated light beam to the target lens comprises:

the control unit controls the imaging engine to transmit the modulated light beam to the target lens.

18. The imaging method of claim 16, wherein the display device further comprises a light selection module, and wherein after the imaging engine modulates the light beam to obtain the modulated light beam, the method further comprises:

the light selection module receives the modulated light beam from the imaging engine;

the control unit selects a target lens from the plurality of lenses and controls the modulated light beam to be transmitted to the target lens, wherein the control unit comprises:

and the control unit controls the light selection module to transmit the modulated light beam to the target lens.

19. The imaging method of claim 16, wherein the display device further comprises a light selection module, and wherein after the imaging engine modulates the light beam to obtain the modulated light beam, the method further comprises:

the light selection module splits the modulated light beam into N paths of split light beams, the number of the target lenses is N, and N is a positive integer greater than or equal to 2;

and the light selection module transmits one path of the split light beam to each target lens.

20. The imaging method of claim 19, wherein the light selection module comprises at least one of:

21. The method of claim 19, wherein the light selection module comprises an optical splitter having an input port and N output ports, and wherein the imaging engine modulates the light beam to obtain a modulated light beam, the method further comprising:

the input port receives the modulated light beams from the imaging engine, and the N target lenses are used for respectively receiving the split light beams from the N output ports.

22. The imaging method according to claim 21, wherein the control unit selects a target lens from the plurality of lenses and controls transmission of the modulated light beam to the target lens includes:

the control unit drives the optical splitter to rotate so as to conduct the optical paths between the N target lenses and the N output ports.

23. The method of claim 19, wherein the light selection module comprises a semi-transparent mirror having a reflective surface and a transmissive surface, and wherein the imaging engine modulates the light beam to obtain a modulated light beam, the method further comprising:

the reflecting surface is used for receiving the modulated light beams from the imaging engine, and the reflecting surface and the transmitting surface are used for respectively outputting two paths of the split light beams.

24. The imaging method of claim 23, wherein the control unit selects a target lens from the plurality of lenses and controls the transmission of the modulated light beam to the target lens comprises:

the control unit is used for driving the semi-transparent reflector to rotate so as to conduct light paths between the reflecting surface and the transmitting surface and the target lens respectively.

25. The method of claim 18, wherein the light selection module comprises a mechanical optical switch comprising a driver and a mirror, and wherein the imaging engine modulates the light beam to obtain a modulated light beam, the method further comprising:

the driving piece drives the reflector to rotate so as to rotate the reflector to a target angle, and the reflection surface of the reflector at the target angle reflects the modulated light beam from the imaging engine to the target lens.

26. The imaging method according to claim 25, wherein the control unit selects a target lens from the plurality of lenses and controls the modulated light beam to be transmitted to the target lens comprises:

the control unit controls the driving piece to drive the reflecting mirror to rotate to the target angle.

27. The imaging method of any one of claims 18 to 20, wherein the light selection module comprises an electro-optical effect optical switch comprising an input port and a plurality of output ports, and wherein after the imaging engine modulates the light beam to obtain the modulated light beam, the method further comprises:

the input port receives the modulated light beams from the imaging engine, a target output port of the electro-optical effect optical switch transmits the modulated light beams to the target lens, and the number of the target output ports is at least one.

28. The imaging method according to claim 27, wherein the control unit selects a target lens from the plurality of lenses and controls the transmission of the modulated light beam to the target lens comprises:

and the control unit conducts the optical path between the input port of the electro-optical effect switch and the target output port.

29. The imaging method of any of claims 16 to 28, further comprising:

the control unit receives an indication message, and the indication message is used for indicating the control unit to conduct a light path between the imaging engine and the target lens.

30. A method as claimed in any one of claims 18 to 27, wherein the light selection module and each of the lenses are connected by an optical waveguide or an optical fibre.