CN107085306B - Display device of augmented reality equipment, augmented reality equipment and head-up display - Google Patents
Display device of augmented reality equipment, augmented reality equipment and head-up display Download PDFInfo
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- CN107085306B CN107085306B CN201710455696.0A CN201710455696A CN107085306B CN 107085306 B CN107085306 B CN 107085306B CN 201710455696 A CN201710455696 A CN 201710455696A CN 107085306 B CN107085306 B CN 107085306B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
- G02B2027/0114—Head-up displays characterised by optical features comprising device for genereting colour display comprising dichroic elements
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention provides a display device of augmented reality equipment, the augmented reality equipment and a head-up display, and relates to the technical field of augmented reality display, wherein the display device of the augmented reality equipment comprises a display image source, a first light source and an optical component; the display image source is provided with a light incident surface and a light emergent surface, wherein the light incident surface is used for receiving light, and emergent light emitted by the light emergent surface forms an image; the first light source is used for emitting light to the light incident surface of the display image source; the optical component is positioned on the light-emitting surface side of the display image source and is used for projecting the image into the eyes of a user; the display device of the augmented reality device further comprises a reflection assembly, wherein the reflection assembly is used for reflecting ambient light to the light incident surface of the display image source and increasing the brightness of the light emitted by the display image source. Therefore, the light emitted by the first light source and the ambient light are emitted to the light incident surface of the display image source, so that the brightness of the light emitted by the display image source can be increased, and the image formed by the display image source is clearer.
Description
Technical Field
The present invention relates to the technical field of augmented reality display, and in particular, to a display device of an augmented reality apparatus, and a head-up display.
Background
With the progress of computer hardware and software technology and optical design and manufacturing technology, virtual Reality (VR for short), augmented Reality (Augmented Reality for short), and mixed Reality (MR for short) technologies are rapidly developing. For example, augmented reality, which is to directly project or superimpose a picture onto reality through a computer, means that we do not need an immersive virtual visual experience, but can effectively interact with the picture projected by the user directly in a real-life scene and without the help of other interactive devices such as operation handles.
Augmented reality display devices commonly employ a head-mounted approach to present computer-generated image information to a user. The mode of the augmented reality display device for realizing the superposition of visual information comprises two modes of video perspective and optical perspective, and the optical perspective is a better means for superposing virtual information. By using the optical perspective image superposition mode, a user can directly see the surrounding real environment and also can see the enhanced image or information generated by a computer.
The brightness of the image or information generated by the existing augmented reality imaging device is completely dependent on the brightness of the backlight source of the image or information, when the augmented reality imaging device is used in an environment with sufficient light, the brightness of the image generated by the computer is obviously lower than the brightness of the surrounding real environment, and the image generated by the computer is displayed quite unclear after the image and the information are overlapped. The brightness of the backlight source is increased forcibly, the power consumption of the equipment is increased, the heat generated by the backlight source cannot be dissipated, the serious heating problem occurs, and the service life of the equipment is shortened.
Disclosure of Invention
The invention aims to provide a display device of augmented reality equipment, augmented reality equipment and a head-up display, so that the technical problem that the brightness of an image generated by a computer is obviously lower than the brightness of a surrounding real environment under the condition that the surrounding environment light intensity of the existing augmented reality equipment is large, and the display of the image generated by the computer after the augmented reality equipment and the computer are overlapped is quite unclear is solved.
The invention provides a display device of augmented reality equipment, which comprises a display image source, a first light source and an optical component;
the display image source is provided with a light incident surface and a light emergent surface, the light incident surface is used for receiving light, and the emergent light emitted by the light emergent surface forms an image; the optical component is positioned on the light-emitting surface side of the display image source and is used for projecting the image into the eyes of a user; the display device of the augmented reality device further comprises a reflection assembly, wherein the reflection assembly is used for reflecting ambient light to the light incident surface of the display image source and increasing the brightness of the light emitted by the display image source.
Further, the display image source is a display panel, and the first light source is a backlight source; the backlight source is positioned on the light incident surface side of the display panel;
the reflection assembly comprises a reflection mirror and a polarization spectroscope arranged between the first light source and the display image source, wherein the reflection mirror is used for reflecting ambient light to the polarization spectroscope, and the ambient light is reflected to the light inlet side of the display panel by the polarization spectroscope; the light energy emitted by the backlight source is transmitted through the polarization spectroscope to be emitted to the light inlet side of the display panel.
Further, the display image source is a reflective display panel;
the display device of the augmented reality apparatus further includes a first polarizing beamsplitter; the light emitted by the first light source enters the light incidence surface of the display image source after being reflected by the first polarization spectroscope, and the light emitted by the display image source enters the optical assembly after passing through the first polarization spectroscope;
the reflection assembly comprises a reflector and a second polarization spectroscope, and the ambient light is continuously reflected by the reflector and the second polarization spectroscope and then is emitted into the light incident surface of the display image source; the light emitted by the display image source is transmitted through the second polarization beam splitter and then enters the optical component.
Further, the display image source is a digital micromirror display device;
the reflecting component comprises a reflecting mirror and a prism arranged between the display image source and the optical component; the prism is provided with a reflecting surface, and the reflecting surface is used for adjusting the incident angle of the ambient light entering the display image source so that the incident angle of the ambient light is the same as the incident angle of the first light source entering the display image source.
Further, the reflecting assembly comprises a plurality of reflecting mirrors, and the reflecting surfaces of the reflecting mirrors are oriented differently and are used for reflecting the ambient light in different directions so that the ambient light in different directions enters the display image source.
Further, the display device of the augmented reality device includes an ambient light collecting portion, the ambient light collecting portion is disposed at a forefront end of an incident path of the ambient light, and the ambient light enters the display image source after passing through the ambient light collecting portion.
Further, the ambient light collecting part comprises a lens for increasing the light incoming amount of the ambient light; the display device also comprises an optical integrator, a grating, a polaroid, a wave plate and an attenuation sheet, wherein the attenuation sheet is used for adjusting the quantity of the ambient light irradiated on the display image source.
Further, the first light source can emit light with m colors, wherein m is an integer greater than or equal to 1; the display device of the augmented reality equipment comprises a light filtering structure, n light filtering parts are arranged on the light filtering structure, m is more than or equal to n and more than or equal to 1, n is an integer, and the light filtering parts are used for filtering the ambient light into light with a single color when the light filtering parts are positioned on an incident path of the ambient light.
Further, the first light source can sequentially emit light of m colors; m is an integer greater than 1; the colors of the n filtering parts are in one-to-one correspondence with n colors in m colors of light emitted by the first light source, and n is an integer greater than 1;
and each filter part is positioned on the incident path of the ambient light at the same time as the color of the light emitted by the first light source.
Further, the filtering structure is a color wheel, n filtering parts are arranged on the color wheel along the circumferential direction, and n is an integer greater than 1; the display device of the augmented reality device comprises a motor, wherein the motor is used for driving the color wheel to rotate, so that each light filtering part is positioned on the incident path of the ambient light at the same time as the color of the light emitted by the first light source.
Further, the filtering part includes one or more of a filter, a dichroic mirror, a grating, or a prism.
Further, the display device of the augmented reality device includes a plurality of electrically controlled optical filters, and the colors of the plurality of electrically controlled optical filters correspond to the colors of the light which can be emitted by the first light source; the electronic control optical filter is provided with a light valve, and the light valve is used for preventing the ambient light from exiting the electronic control optical filter after being closed;
the display device of the augmented reality equipment comprises a plurality of ambient light incidence paths, and a plurality of electric control filters are arranged on the ambient light incidence paths in a one-to-one correspondence manner; the light valve of each electric control filter is only opened at the same time as the color of the light emitted by the first light source.
Further, the number of the display image sources, the first light sources, the reflecting assemblies and the filtering structures is multiple; one of the display image sources, one of the first light sources, one of the reflecting assemblies and one of the filtering structures form a group of display mechanisms; the light emitted by the plurality of groups of display mechanisms is imaged on the same optical component.
Further, the display device of the augmented reality device includes a light intensity detector, where the light intensity detector is configured to sense a light intensity ratio of red light, green light, and blue light in the ambient light, and adjust an intensity of the light emitted by the first light source to a corresponding color, so that the light intensity ratio of the red light, the green light, and the blue light emitted by the first light source is consistent with the ambient light.
The augmented reality device comprises the display device of the augmented reality device.
Further, the augmented reality device comprises a helmet, and the display device of the augmented reality device is arranged on the helmet.
The head-up display provided by the invention comprises the display device of the augmented reality equipment.
The invention provides a display device of augmented reality equipment, which comprises a display image source, a first light source and an optical component; the display image source is provided with a light incident surface and a light emergent surface, after the light incident surface receives light, the emergent light emitted by the light emergent surface can form an image, and the first light source is used for emitting light to the light incident surface of the display image source. The optical component is positioned on the light emitting surface side of the display image source and is used for projecting the image into the eyes of a user. The display device of the augmented reality device further comprises a reflection assembly, wherein the reflection assembly is used for reflecting the ambient light to the light incidence surface of the display image source, so that the light emitted by the first light source and the ambient light are both incident to the light incidence surface of the display image source, the brightness of the light emitted by the display image source can be increased, and the image formed by the display image source is clearer. The augmented reality device comprises the display device of the augmented reality device. The display device of the augmented reality device further comprises a reflection assembly, wherein the reflection assembly is used for reflecting ambient light to the light incidence surface of the display image source, so that light emitted by the first light source and the ambient light are both incident to the light incidence surface of the display image source, the brightness of the light emitted by the display image source can be increased, and the image formed by the display image source is clearer.
The head-up display provided by the invention comprises the display device of the augmented reality equipment. The display device of the augmented reality device further comprises a reflection assembly, wherein the reflection assembly is used for reflecting ambient light to the light incidence surface of the display image source, so that light emitted by the first light source and the ambient light are both incident to the light incidence surface of the display image source, the brightness of the light emitted by the display image source can be increased, and the image formed by the display image source is clearer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a display device of an augmented reality apparatus according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of a display device of an augmented reality apparatus according to embodiment 1 of the present invention provided with a filtering structure;
fig. 3 is a schematic diagram of a display device of an augmented reality apparatus according to embodiment 1 of the present invention provided with another filtering structure;
fig. 4 is a schematic diagram of a display device of an augmented reality apparatus according to embodiment 2 of the present invention;
fig. 5 is a schematic diagram of a display device of an augmented reality apparatus according to embodiment 3 of the present invention.
Icon: 100-displaying an image source; 200-mirrors; 310-polarizing beamsplitter; 320-prism; 410-a lens; 420-a combined mirror; 500-an ambient light collection portion; 600-rotating disc; 700-filtering part; 800-dichroic mirror; 900-first light source.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used, the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, only for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
The present invention provides a display device of an augmented reality apparatus, and several embodiments are given below to describe in detail the structure of the display device of an augmented reality apparatus provided by the present invention.
Example 1
The invention provides a display device of augmented reality equipment, which comprises a display image source 100, a first light source 900 and an optical component; the display image source 100 has a light incident surface and a light emergent surface, the light emergent surface emits emergent light to form an image after the light incident surface receives light, and the first light source 900 is configured to emit light to the light incident surface of the display image source 100. The optical component is located on the light-emitting surface side of the display image source 100, and is used for projecting the image into the eyes of the user. The display device of the augmented reality apparatus further includes a reflection component, where the reflection component is configured to reflect ambient light to the light incident surface of the display image source 100, so that both the light emitted by the first light source 900 and the ambient light are incident to the light incident surface of the display image source 100, and the brightness of the light emitted by the display image source 100 can be increased, so that the image formed by the display image source 100 is clearer. The stronger the external environment light is, the stronger the collected light can be used for display, and the stronger the display brightness is at the moment, which exactly meets the different brightness requirements of the display device under different brightness conditions.
Ambient light may include, but is not limited to, natural light sources such as sunlight, moonlight, and the like, as well as artificial light sources such as lights. Therefore, the display device of the augmented reality equipment can be used not only outdoors, but also indoors with sufficient brightness, and the application range of the display device is increased.
The image generated by the prior augmented reality display device depends on the brightness of the built-in light source, and the brightness of the built-in light source is insufficient under the condition that the light of the external environment is sufficient due to the limitation of the technology of the built-in light source, so that the brightness of the image generated by the computer is obviously lower than the brightness of the surrounding real environment, and the image generated by the computer is quite unclear compared with the surrounding environment. The brightness of the backlight source is forcibly increased, the power consumption of the equipment is increased, the heat generated by the light source cannot be dissipated, the serious heating problem can occur, and the service life of the equipment is shortened. The display device of the augmented reality device provided by the invention can collect and image the ambient light fully by using the reflection assembly, and the brightness of the generated image is obviously higher than that of the image formed by using the built-in light source. The problem of insufficient display brightness under outdoor clear daytime use conditions is solved, and the problem that the current AR and MR equipment cannot be used under the environment is solved, so that the equipment can be used under various conditions.
As shown in fig. 1, the display panel may be a reflective liquid crystal panel, and the display panel and the first light source 900 form a reflective liquid crystal display, such as liquid crystal on silicon (Liquid Crystal on Silicon, abbreviated as Lcos hereinafter). The reflection assembly may include a reflection mirror 200 and a first polarizing beam splitter 310 disposed between the display image source 100 and the optical assembly, where the reflection mirror 200 is configured to reflect the ambient light, and introduce the ambient light onto a beam splitting surface of the first polarizing beam splitter 310, and a portion of polarized light of the ambient light is reflected and irradiated onto an incident surface of the display image source 100. After the light emitted by the first light source 900 passes through the second polarizing beam splitter 310, part of the polarized light is reflected by the second polarizing beam splitter 310 and irradiates on the light incident surface of the display image source 100, and the combined action of the ambient light and the first light source 900 can improve the brightness of the light emitted from the display image source 100, so that the brightness of the light entering the human eyes of a user is improved.
Further, the reflecting mirror 200 may introduce the ambient light to the light incident surface of the display image source 100, the reflecting assembly includes a plurality of reflecting mirrors 200, and the reflecting surfaces of the reflecting mirrors 200 are oriented differently to reflect the ambient light in different directions, so that the ambient light in different directions enters the display image source 100, and thus the collection rate of the ambient light may be increased, and more directions of light may enter the light incident surface of the display image source 100.
The optical component may include a mirror 200, a lens 410, and a combiner 420 in the second half of the optical path for introducing an image into a human eye, which is just one implementation, and the application may also be used in various augmented reality display modes such as freeform surfaces, waveguides, laser scanning, and the like.
The display device of the augmented reality apparatus may include an ambient light collecting part 500, the ambient light collecting part 500 is disposed at the forefront of the incident path of the ambient light, and the ambient light is incident into the display image source 100 after passing through the ambient light collecting part 500. The ambient light collecting part 500 may include a lens for increasing an amount of incoming ambient light; and an optical integrator for making the light incident on the display image source 100 more uniform; the grating is used for color filtering or polarization filtering, and the polarizer and wave plate are used for polarization filtering, and the attenuator is used for adjusting the amount of the ambient light irradiated on the display image source 100. The main function of the ambient light collecting unit 500 is to guide ambient light to the display image source 100, and the above components can be used alone or in combination, so that a better display effect can be achieved.
Further, the first light source 900 can emit light with m colors, where m is an integer greater than or equal to 1, that is, the first light source 900 can emit light with a single color or can emit light with multiple colors. The display device of the augmented reality device comprises a filtering structure, n filtering parts 700 are arranged on the filtering structure, m is greater than or equal to n and greater than or equal to 1, n is an integer, the filtering parts are positioned on the incident path of the ambient light, the ambient light can be filtered into light with a single color, the color can be the same as that of the first light source 900, the first light source 900 is overlapped with the ambient light, and the intensity of the emergent light of the display image source 100 can be increased.
When the first light source 900 can emit light of only one color, i.e., m=1, the filter structure includes the filter part 700 having the same color as that of the light emitted from the first light source 900. For example, the first light source 900 may emit only red light, and the filter 700 may be a red filter, so that the ambient light is filtered into red light and then is incident on the light incident surface of the display image source 100, thereby increasing the brightness of the red light.
Further, the first light source 900 can emit light with multiple colors, and the first light source 900 is configured to sequentially emit light with different colors, for example, may sequentially emit red light, green light, and blue light. The display device of the augmented reality apparatus includes a filter structure, on which a plurality of filter portions 700 are disposed, and the plurality of filter portions 700 are respectively configured to transmit light of different colors, the colors of the plurality of filter portions 700 correspond to the colors of the light emitted by the first light source 900, for example, the colors of the filter portions 700 may correspond to red, green, and blue, and each filter portion 700 is located on the incident path of the ambient light at the same time as the color of the light emitted by the first light source 900, so that the color of the ambient light incident on the display image source 100 is the same as the color of the light emitted by the first light source 900 at this time, and after the two colors are superimposed, the brightness of the light irradiated on the optical assembly is increased together.
Specifically, as shown in fig. 2, the filtering structure may be a color wheel, including a turntable 600, and the filtering part 700 may be a filter circumferentially disposed on the turntable 600; the motor drives the rotary table 600 to rotate, so that the ambient light is injected into one of the plurality of optical filters, the rotation frequency of the rotary table 600 is synchronous with the control of the three-color sub-light sources of the first light source 900, for example, the light emitted by the first light source 900 is red light, and at the same time, the rotary table 600 rotates to the red filter 700, so that the ambient light entering the display image source 100 is red light.
The filter structure preferably includes one red filter part 700, one green filter part 700, and one blue filter part 700. Other colors of filter 700 may also be included. The filter 700 is not limited to a filter, and other optical devices such as a dichroic mirror, a grating, and a prism 320 may be used.
Specifically, as shown in fig. 3, the display device of the augmented reality apparatus includes a plurality of electrically controlled filters, and the colors of the plurality of electrically controlled filters correspond to the colors of the light that can be emitted by the first light source 900; the electronic control optical filter is provided with a light valve, and the light valve is used for preventing the ambient light from exiting the electronic control optical filter after being closed. The display device of the augmented reality apparatus includes a plurality of ambient light incident paths, each of which is provided with an electrically controlled optical filter, and each of the optical valves of the electrically controlled optical filters is only opened at the same time as the color of the light emitted from the first light source 900, that is, when the light of the first light source 900 is red, only the light valve of the red electrically controlled optical filter is opened, and the light valve of the other electrically controlled optical filters is closed, and at this time, the red light emitted from the first light source 900 is overlapped with the red light in the ambient light to increase the brightness of the image. Taking the number of the electric control filters as three as an example, from top to bottom, the electric control filters can be respectively a liquid crystal electric control red filter, a liquid crystal electric control green filter and a liquid crystal electric control blue filter, meanwhile, one reflecting mirror 200 and two dichroic mirrors 800 are correspondingly arranged, the first dichroic mirror 800 can reflect light from the liquid crystal electric control green filter, and can transmit red light reflected by the reflecting mirror 200 above, and monochromatic environment light can be led into the light inlet surface of the display image source 100 through the reflecting mirror 200 and the two dichroic mirrors 800
In particular, the number of the display image sources 100, the first light sources 900, the reflection assemblies and the filtering structures of the display device of the augmented reality apparatus is multiple, and each display image source 100, the first light sources 900, the reflection assemblies and the filtering structures form a group of display mechanisms, and images formed by the multiple groups of display mechanisms are all directed to the optical assemblies for imaging. The color of the light emitted by the first light source 900 within each set of display mechanisms may be the same or different. Taking the colors of the first light source 900 as red, green and blue as examples, the filtered three-color light is respectively led into the corresponding three display image sources 100, and the formed images are irradiated on the optical components, so that a higher frame rate can be realized because the plurality of display mechanisms work independently.
Preferably, the imaging device includes a light intensity detector, where the light intensity detector is configured to sense the light intensity ratio of the red light, the green light, and the blue light in the ambient light, and adjust the intensity of the light emitted by the first light source 900 with the corresponding color, so that the light intensity ratio of the red light, the green light, and the blue light emitted by the first light source 900 is consistent with the ambient light, where the consistency is tended to be consistent, and it is impossible to achieve perfect identity. In this way, the white balance of the image can be adjusted.
Example 2
Specifically, as shown in fig. 4, the display panel may be a liquid crystal panel, and the first light source 900 is a backlight, which is located on the light incident surface side of the display panel, so that the display panel and the first light source 900 form a transmissive liquid crystal display (Liquid Crystal Display, hereinafter, abbreviated as LCD). The reflecting component includes a reflecting mirror 200 and a polarizing beam splitter 310 disposed between the first light source 900 and the display image source 100, where the reflecting mirror 200 is configured to reflect the ambient light, introduce the ambient light onto a beam splitting plane of the polarizing beam splitter 310, and reflect and irradiate a part of polarized light of the ambient light onto a light incident plane of the display image source 100. After the light emitted by the first light source 900 passes through the polarizing beam splitter 310, part of the polarized light passes through the polarizing beam splitter 310 and irradiates on the light incident surface of the display image source 100, and the combined action of the ambient light and the first light source 900 can improve the brightness of the light emitted from the display image source 100, thereby improving the brightness of the light entering the human eyes of the user.
Example 3
Unlike embodiments 1 and 2, as shown in fig. 5, the display image source 100 may be a digital micromirror display device (Digital Micro mirror Device, hereinafter referred to as DMD), the reflection assembly includes a mirror 200, and a prism 320 disposed between the display image source 100 and the optical assembly, and the DMD is a micromirror array, so that it is required to be incident at a certain angle of incidence to be emitted vertically, and therefore it is required to add a prism 320 in the optical path to achieve that the light of the first light source 900 and the ambient light are incident on the surface of the DMD at the same angle and the same position. The prism 320 has a reflective surface for adjusting an incident angle of the ambient light into the display image source 100 such that the incident angle of the ambient light is the same as the incident angle of the first light source 900 into the display image source 100.
The display image source 100 includes not only the above three but also other display devices that can realize the generation of an image; by introducing ambient light, an increase in image brightness is achieved. For example, a mems single micromirror scanning method may also be used to interpose an ambient light path in the light path, thereby increasing the brightness of the image.
The augmented reality device comprises the display device of the augmented reality device. The display device of the augmented reality apparatus further includes a reflection component, where the reflection component is configured to reflect ambient light to the light incident surface of the display image source 100, so that both the light emitted by the first light source 900 and the ambient light are incident to the light incident surface of the display image source 100, and the brightness of the light emitted by the display image source 100 can be increased, so that the image formed by the display image source 100 is clearer. The augmented reality device may comprise a helmet on which a display device of the augmented reality device is arranged. The user wears the helmet on his head, and the upper portion of the helmet may be provided with a light inlet through which ambient light enters the display image source 100 to be imaged on a screen in front of the human eyes. The helmet is suitable for indoor and outdoor use.
The head-up display provided by the invention comprises the display device of the augmented reality equipment. The display device of the augmented reality apparatus further includes a reflection component, where the reflection component is configured to reflect ambient light to the light incident surface of the display image source 100, so that both the light emitted by the first light source 900 and the ambient light are incident to the light incident surface of the display image source 100, and the brightness of the light emitted by the display image source 100 can be increased, so that the image formed by the display image source 100 is clearer. The head-up display may be provided in a vehicle such as an automobile or an airplane, and the image may be projected by an optical member onto an optical/electrical display device on a combination glass right in front of the driver's seat.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (16)
1. A display device of augmented reality equipment comprises a display image source, a first light source and an optical assembly;
the display image source is provided with a light incident surface and a light emergent surface, the light incident surface is used for receiving light, and the emergent light emitted by the light emergent surface forms an image; the optical component is positioned on the light-emitting surface side of the display image source and is used for projecting the image into the eyes of a user; the display device of the augmented reality equipment is characterized by further comprising a reflection assembly, wherein the reflection assembly is used for reflecting ambient light to the light incidence surface of the display image source and increasing the brightness of the light emitted by the display image source; the first light source is used for emitting light to the light incident surface of the display image source; and is also provided with
The display device of the augmented reality device comprises a light intensity detector, wherein the light intensity detector is used for sensing the light intensity proportion of red light, green light and blue light in the ambient light, and adjusting the intensity of the light emitted by the first light source with the corresponding color so that the light intensity proportion of the red light, the green light and the blue light emitted by the first light source is consistent with the ambient light.
2. The display device of an augmented reality apparatus according to claim 1, wherein the display image source is a display panel and the first light source is a backlight; the backlight source is positioned on the light incident surface side of the display panel;
the reflection assembly comprises a reflection mirror and a polarization spectroscope arranged between the first light source and the display image source, wherein the reflection mirror is used for reflecting ambient light to the polarization spectroscope, and the ambient light is reflected to the light inlet side of the display panel by the polarization spectroscope; the light energy emitted by the backlight source is transmitted through the polarization spectroscope to be emitted to the light inlet side of the display panel.
3. The display device of an augmented reality apparatus according to claim 1, wherein the display image source is a reflective display panel;
the display device of the augmented reality apparatus further includes a first polarizing beamsplitter; the light emitted by the first light source enters the light incidence surface of the display image source after being reflected by the first polarization spectroscope, and the light emitted by the display image source enters the optical assembly after passing through the first polarization spectroscope;
the reflection assembly comprises a reflecting mirror and a second polarization spectroscope, and the ambient light is continuously reflected by the reflecting mirror and the second polarization spectroscope and then is emitted into the light incident surface of the display image source; the light emitted by the display image source is transmitted through the second polarization beam splitter and then enters the optical component.
4. The display apparatus of an augmented reality device according to claim 1, wherein the display image source is a digital micromirror display device;
the reflecting component comprises a reflecting mirror and a prism arranged between the display image source and the optical component; the prism is provided with a reflecting surface, and the reflecting surface is used for adjusting the incident angle of the ambient light entering the display image source so that the incident angle of the ambient light is the same as the incident angle of the first light source entering the display image source.
5. The display device of claim 1, wherein the reflecting assembly comprises a plurality of reflecting mirrors, and the reflecting surfaces of the plurality of reflecting mirrors are oriented differently to reflect the ambient light in different directions so that the ambient light in different directions enters the display image source.
6. The display device of an augmented reality apparatus according to claim 1, wherein the display device of the augmented reality apparatus includes an ambient light collecting portion provided at a forefront end of an incident path of the ambient light, the ambient light being incident to the display image source after passing through the ambient light collecting portion.
7. The display device of an augmented reality apparatus according to claim 6, wherein the ambient light collecting section includes a lens for increasing an amount of incoming ambient light; the display device also comprises an optical integrator, a grating, a polaroid, a wave plate and an attenuation sheet, wherein the attenuation sheet is used for adjusting the quantity of the ambient light irradiated on the display image source.
8. The display device of an augmented reality apparatus according to claim 1, wherein the first light source is capable of emitting light of m colors, m being an integer of 1 or more; the display device of the augmented reality equipment comprises a light filtering structure, n light filtering parts are arranged on the light filtering structure, m is more than or equal to n and more than or equal to 1, n is an integer, and when the light filtering parts are positioned on the incident path of the ambient light, the ambient light is filtered into light with a single color by the light filtering parts.
9. The display device of an augmented reality apparatus according to claim 8, wherein the first light source is capable of sequentially emitting light of m colors; m is an integer greater than 1; the colors of the n filtering parts are in one-to-one correspondence with n colors in m colors of light emitted by the first light source, and n is an integer greater than 1;
and each filter part is positioned on the incident path of the ambient light at the same time as the color of the light emitted by the first light source.
10. The display device of augmented reality equipment according to claim 9, wherein the filter structure is a color wheel, n filter parts are circumferentially arranged on the color wheel, and n is an integer greater than 1; the display device of the augmented reality device comprises a motor, wherein the motor is used for driving the color wheel to rotate, so that each light filtering part is positioned on the incident path of the ambient light at the same time as the color of the light emitted by the first light source.
11. The display device of claim 8, wherein the filter portion comprises one or more of a filter, a dichroic mirror, a grating, or a prism.
12. The display device of an augmented reality apparatus according to claim 8, wherein the display device of the augmented reality apparatus comprises a plurality of electrically controlled filters, and the colors of the plurality of electrically controlled filters correspond to the colors of light that the first light source is capable of emitting; the electronic control optical filter is provided with a light valve, and the light valve is used for preventing the ambient light from exiting the electronic control optical filter after being closed;
the display device of the augmented reality equipment comprises a plurality of ambient light incidence paths, and a plurality of electric control filters are arranged on the ambient light incidence paths in a one-to-one correspondence manner; the light valve of each electric control filter is only opened at the same time as the color of the light emitted by the first light source.
13. The display device of an augmented reality apparatus according to claim 2, wherein the number of display image sources, first light sources, reflection assemblies and filtering structures is plural; one of the display image sources, one of the first light sources, one of the reflecting assemblies and one of the filtering structures form a group of display mechanisms; the light emitted by the plurality of groups of display mechanisms is imaged on the same optical component.
14. An augmented reality device comprising the display apparatus of any one of claims 1-13.
15. The augmented reality device of claim 14, comprising a helmet, the display device of the augmented reality device being disposed on the helmet.
16. A head-up display comprising the display device of the augmented reality apparatus of any one of claims 1-13.
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| CN208141052U (en) | 2018-05-28 | 2018-11-23 | 太若科技(北京)有限公司 | AR glasses |
| KR102153616B1 (en) * | 2019-05-16 | 2020-09-08 | 주식회사 레티널 | Optical device for augmented reality having improved light transmissivity |
| CN113359294B (en) * | 2020-03-06 | 2022-11-22 | 苏州苏大维格科技集团股份有限公司 | Micro optical system |
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