CN211426944U - Display device - Google Patents
Display device Download PDFInfo
- Publication number
- CN211426944U CN211426944U CN202020441865.2U CN202020441865U CN211426944U CN 211426944 U CN211426944 U CN 211426944U CN 202020441865 U CN202020441865 U CN 202020441865U CN 211426944 U CN211426944 U CN 211426944U
- Authority
- CN
- China
- Prior art keywords
- light
- imaging
- image source
- imaging light
- absorbing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The present disclosure provides a display apparatus, including: an optical imaging device comprising an image source element configured for optical path alignment, a light splitting element and a reflecting element; and an absorbing element shaped and disposed in the display device such that the absorbing element absorbs non-imaging light rays of the scene to be displayed and does not obstruct imaging light rays used to generate a display image of the scene to be displayed. In the display device, the absorption element absorbs the non-imaging light rays in the scene to be displayed, so that the non-imaging light rays in the display device are reduced, the influence of the non-imaging light rays on the scene to be displayed is further reduced, and the display quality of the display image of the scene to be displayed is improved.
Description
Technical Field
The present disclosure relates to the field of optical engineering technology, and in particular, to a display device.
Background
VR (Virtual Reality) and AR (Augmented Reality) are widely applied technologies, and are currently applied to a plurality of fields such as education, medical treatment, and design. VR is based on computers, electronic information, and simulation technologies, all in one, which is implemented by a computer simulating a virtual environment to give the human a sense of environmental immersion. The AR simulates virtual information such as characters, images, three-dimensional models, music, videos and the like generated by a computer and then applies the virtual information to the real world, and the two kinds of information are mutually supplemented, so that the real world is enhanced.
Both VR and AR devices are made up of several optical elements that are assembled in certain combinations to achieve optical imaging.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing, the present disclosure provides a display apparatus. The display device includes: an optical imaging device comprising an image source element configured for optical path alignment, a light splitting element and a reflecting element; and an absorbing element shaped and disposed in the display device such that the absorbing element absorbs non-imaging light rays of the scene to be displayed and does not obstruct imaging light rays used to generate a display image of the scene to be displayed. In the display device, the absorption element absorbs the non-imaging light rays in the scene to be displayed, so that the non-imaging light rays in the display device are reduced, the influence of the non-imaging light rays on the scene to be displayed is further reduced, and the display quality of the display image of the scene to be displayed is improved.
According to an aspect of the present disclosure, there is provided a display device including: an optical imaging device comprising an image source element configured for optical path alignment, a light splitting element and a reflecting element; and an absorbing element shaped and disposed in the display device such that the absorbing element absorbs non-imaging light rays of a scene to be displayed and does not obstruct imaging light rays used to generate a display image of the scene to be displayed.
Optionally, in an example of the above aspect, the absorbing element includes a first absorbing element attached to an edge portion of the image source element near a human eye position and extending toward the light splitting element, wherein the human eye position and the reflecting element are respectively located at both sides of the light splitting element, and the reflecting element is capable of reflecting the imaging light to the human eye position.
Optionally, in one example of the above aspect, the first absorption element is surface-attached to the light splitting element, and a surface attachment area on the light splitting element does not overlap with a coverage area of the imaging light rays on the light splitting element.
Optionally, in one example of the above aspect, an outer edge of a surface attachment region is at least partially coincident with an outer edge of a cover region, wherein the surface attachment region is a region where the first absorbing element is attached to the surface of the light splitting element, and the cover region is a region where the imaging light covers the surface of the light splitting element.
Optionally, in one example of the above aspect, a surface of the first absorbing element on a side close to the light splitting element is parallel to a surface of the light splitting element, and a surface of the first absorbing element on a side close to the image source element is parallel to a surface of the image source element.
Optionally, in one example of the above aspect, the first absorbing element is not surface attached to the light splitting element such that the first absorbing element is capable of absorbing marginal non-imaging light rays projected to the human eye location emanating from an edge of the image source element remote from the human eye location that generates an image.
Optionally, in one example of the above aspect, an edge of the absorbing layer of the first absorbing element on a side adjacent to the light splitting element blocks the edge non-imaging light, and a surface of the first absorbing element on a side adjacent to the image source element does not block the imaging light.
Optionally, in one example of the above aspect, the absorbing element further includes a second absorbing element attached on an edge portion of the image source element remote from the position of the human eye and extending toward the light splitting element.
Optionally, in an example of the above aspect, an edge of the absorption layer of the second absorption element on a side close to the light splitting element is in adjacent contact with but not coincident with an intersection position where an edge imaging ray far from the human eye position in imaging rays emitted by the image source element intersects with an edge imaging ray of a real scene, and the second absorption element does not block the imaging ray for the real scene.
Optionally, in one example of the above aspect, a surface of the second absorption element on a side close to an imaging ray region for a real scene is parallel to an edge imaging ray under the real scene.
Optionally, in one example of the above aspect, an absorber layer surface of the second absorber element is parallel to an edge imaging ray emitted by the image source element closest to the second absorber element.
Optionally, in an example of the above aspect, the display device is an augmented reality display device, and the display image of the scene to be displayed includes a virtual scene image and a real scene image.
Optionally, in one example of the above aspect, the absorbing element comprises a substrate layer and an absorbing layer, a surface of the absorbing layer being disposed towards light emitted by the image source element.
Alternatively, in one example of the above aspect, the absorption layer is formed in a planar structure or a concave structure.
Alternatively, in one example of the above aspect, the absorption layer is formed in an array of microstructures, and the recesses are formed in two adjacent microstructures in the array of microstructures.
Optionally, in one example of the above aspect, the microstructures in the microstructure array include at least one of a triangle, a parallelogram, a trapezoid, and a rectangle.
Optionally, in one example of the above aspect, the planar structured or recessed structured surface of the absorbing layer has an absorbing coating.
Optionally, in one example of the above aspect, the absorption band of the absorptive coating includes a light emission band and/or an entire visible light band of the image source element.
Optionally, in an example of the above aspect, the image source element includes an aberration corrector, and the aberration corrector is configured to correct an aberration of the imaging light emitted from the image source element and emit the corrected imaging light to the light splitting element.
Optionally, in an example of the above aspect, a distance between an edge of each absorbing element near the light splitting element and the image source element is set to a length in a range of 1mm to 90mm, and an angle formed by each absorbing element to a horizontal plane toward the imaging light is set to an angle in a range of 50 ° to 120 °.
Optionally, in an example of the above aspect, the optical imaging apparatus further includes a circular polarizer attached to or close to a side of the image source element facing the light splitting element, the light splitting element includes a polarizer and a wave plate attached to a side of the polarizer facing the reflection element, and the reflection element includes a transflective element, where the imaging light of the virtual scene image emitted by the image source element is transmitted to the light splitting element through the circular polarizer and reflected to the transflective element through the light splitting element, the transflective element reflects the imaging light of the virtual scene image and transmits to the human eye position through the light splitting element, and the imaging light of the real scene image sequentially transmits to the transflective element and the light splitting element to the human eye position.
Optionally, in an example of the above aspect, the optical imaging apparatus further includes a first polarizer attached to or near a side of the image source element facing the light splitting element, the light splitting element includes a transflective element, and the reflective element includes a second polarizer, wherein imaging light of a virtual scene image emitted by the image source element is transmitted to the transflective element through the first polarizer, is reflected to the second polarizer through the transflective element, reflects imaging light of the virtual scene image and is transmitted to a human eye position through the transflective element, and imaging light of a real scene image is transmitted to the human eye position through the second polarizer and the transflective element in sequence.
Optionally, in one example of the above aspect, the image source element, the light splitting element, and the reflective element constitute a composite air guide structure; or the image source element, the light splitting element and the reflecting element form a free-form surface prism system.
Drawings
A further understanding of the nature and advantages of the present disclosure may be realized by reference to the following drawings. In the drawings, similar components or features may have the same reference numerals. The accompanying drawings, which are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the detailed description serve to explain the embodiments of the disclosure, but are not intended to limit the embodiments of the disclosure. In the drawings:
FIG. 1 shows a schematic diagram of one example of an AR device assembled from multiple optical elements;
FIG. 2 shows a schematic diagram of one example of a display device of an embodiment of the present disclosure;
fig. 3 shows a schematic view of one example of an image source element having an image projection area in a circular shape according to an embodiment of the disclosure;
fig. 4 shows a schematic view of one example of an image source element having an image projection area of a rectangle shape according to an embodiment of the present disclosure;
fig. 5 shows a schematic diagram of another example of a display device of an embodiment of the present disclosure;
FIG. 6 shows a schematic diagram of one example of non-imaging light in a display device of an embodiment of the present disclosure;
fig. 7 shows a schematic view of one example of a planar structure of an absorption layer of an absorption element of an embodiment of the present disclosure;
fig. 8 shows a schematic view of one example of the concave structure of the absorption layer of the absorption element of the embodiment of the present disclosure;
FIG. 9 shows a schematic diagram of one example of microstructures formed as an absorption layer distributed as an array of microstructures of an embodiment of the present disclosure;
fig. 10 shows a schematic view of one example of a first absorbing member in a display device of an embodiment of the present disclosure;
fig. 11 illustrates a schematic view of another example of a first absorption member in a display device of an embodiment of the present disclosure;
FIG. 12 shows a schematic view of one example of the outer edge of the surface attachment area of the first absorbing element on the light-splitting element and the outer edge of the footprint of the light-splitting element at least partially coinciding, according to an embodiment of the present disclosure;
fig. 13 is a schematic view showing another example of a first absorption member in a display device of the embodiment of the present disclosure;
fig. 14 is a schematic view showing another example of a first absorption member in a display device of the embodiment of the present disclosure;
figure 15 shows a schematic view of one example of the height and included angle of the first absorbent element of an embodiment of the present disclosure;
fig. 16 is a schematic view showing another example of the first absorbing member in the display device of the embodiment of the present disclosure;
fig. 17 shows a schematic view of one example of a second absorbing element in a display device of an embodiment of the present disclosure;
fig. 18 shows a schematic view of another example of a second absorbing element in a display device of an embodiment of the present disclosure;
fig. 19 shows a schematic view of another example of a second absorbing element in a display device of an embodiment of the present disclosure;
fig. 20 shows a schematic view of another example of a second absorbing element in a display device of an embodiment of the present disclosure;
fig. 21 shows a schematic view of one example of a display device of an embodiment of the present disclosure including a first absorbing element and a second absorbing element; and
fig. 22 shows a schematic diagram of one example of a display device including a phase difference corrector of the embodiment of the present disclosure.
Detailed Description
The subject matter described herein will be discussed with reference to example embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thereby implement the subject matter described herein, and are not intended to limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as needed. In addition, features described with respect to some examples may also be combined in other examples.
As used herein, the term "include" and its variants mean open-ended terms in the sense of "including, but not limited to. The term "based on" means "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment". The term "another embodiment" means "at least one other embodiment". The terms "first," "second," and the like may refer to different or the same object. Other definitions, whether explicit or implicit, may be included below. The definition of a term is consistent throughout the specification unless the context clearly dictates otherwise.
VR and AR are widely used technologies that are currently used in many areas of education, medicine, and design. VR is based on computers, electronic information, and simulation technologies, all in one, which is implemented by a computer simulating a virtual environment to give the human a sense of environmental immersion. The AR simulates virtual information such as characters, images, three-dimensional models, music, videos and the like generated by a computer and then applies the virtual information to the real world, and the two kinds of information are mutually supplemented, so that the real world is enhanced.
Both VR and AR devices are made up of several optical elements that are assembled in certain combinations to achieve optical imaging. Fig. 1 shows a schematic diagram of one example of an AR device assembled from multiple optical elements. As shown in fig. 1, AR device 100 includes an image source element 110, a light splitting element 120, and a reflecting element 130. The imaging light handled by the AR device 100 includes imaging light directed to the image source element 110 and imaging light in the real scene.
For the imaging light emitted from the image source element 110 (for example, the light indicated by the solid line in fig. 1), the imaging light emitted from the image source element 110 is reflected to the reflection element 130 through the light splitting element 120, and then the imaging light is reflected to the light splitting element 120 through the reflection element 130 and then is transmitted to the human eye 140 through the light splitting element 120, so that the human eye can see the image projected by the image source element.
For the imaging light rays (for example, the light rays indicated by the dashed lines in fig. 1) in the real scene, the imaging light rays are transmitted to the light splitting element 120 through the reflective element 130, and then are transmitted to the human eye 140 through the light splitting element 120, so that the human eye 140 can see the corresponding real scene.
However, the light emitted by image source element 110 includes non-imaging light (also referred to as stray light) in addition to imaging light, which is undesired light that is deflected out of the imaging path. The non-imaging light affects the display quality of the imaged image, and the more non-imaging light, the worse the display quality of the imaged image. Therefore, how to eliminate the non-imaging light is an urgent problem to be solved for the optical device assembled by the optical elements.
In order to solve the above problems, the present disclosure provides a display apparatus. The display device includes: an optical imaging device comprising an image source element configured for optical path alignment, a light splitting element and a reflecting element; and an absorbing element shaped and disposed in the display device such that the absorbing element absorbs non-imaging light rays of the scene to be displayed and does not obstruct imaging light rays used to generate a display image of the scene to be displayed. In the display device, the absorption element absorbs the non-imaging light rays in the scene to be displayed, so that the non-imaging light rays in the display device are reduced, the influence of the non-imaging light rays on the scene to be displayed is further reduced, and the display quality of the display image of the scene to be displayed is improved.
A display apparatus according to the present disclosure will be described in detail below with reference to the accompanying drawings.
Fig. 2 shows a schematic diagram of one example of a display device of an embodiment of the present disclosure. It should be noted that the display device has a stereoscopic structure, and the schematic diagram shown in fig. 2 is a plan view from one viewing angle. For example, the display device has three-dimensional coordinates (such as xyz coordinate system) as a reference frame, and the schematic diagram shown in fig. 2 has yz coordinate system as a reference frame. In the embodiments of the present specification, the display device may be head-mounted, or may be in other forms such as non-head-mounted.
As shown in fig. 2, the display apparatus may include an optical imaging device including an image source element 110, a light splitting element 120, and a reflecting element 130 configured to be optically aligned. The optical path alignment is to combine a plurality of optical elements into a system so that light can propagate along a set route to realize a predetermined function. In the embodiment of the present disclosure, the image source element 110, the light splitting element 120 and the reflective element 130 which are aligned via the optical path may cooperate with each other to project the imaging light of the display image to the human eye 140, so that the human eye 140 can see the projected display image.
Taking fig. 2 as an example, the solid lines shown in fig. 2 represent the imaging light emitted by the image source element 110: 2001 image light and 2002 image light, 2001 image light and 2002 image light that image source component 110 sent out reflect to reflecting element 130 through light splitting component 120, then this 2001 image light and 2002 image light reflect to light splitting component 120 through reflecting element 130, and then transmit to people's eye 140 by light splitting component 120.
In one example, the image source element 110, the light splitting element 120, and the reflecting element 130 constitute a composite air guide structure, the optical elements constituting the composite air guide structure are hollow, the medium for propagating light between the optical elements is air, and the composite air guide structure includes a birdbath structure. In the composite air guide structure, the image source element 110 emits light and projects the light to the light splitting element 120, the light splitting element 120 reflects a part of the light to the reflecting element 130, and the reflecting element 130 reflects the light and transmits the light to the position of the human eye through the light splitting element 120; the ambient light rays are transmitted through the reflective element 130 and the light splitting element 120 in sequence to the eye position. In another example, image source element 110, light splitting element 120, and reflective element 130 comprise a freeform prism system. The medium for transmitting light among all optical elements of the free-form surface prism system is made of the material of the optical elements, and the direction of the light path of the free-form surface prism system is similar to that of the composite air guide structure.
The image source element 110 may be used to generate a display image, the optical imaging device being configured to project the display image to the human eye 140 so that the display image is viewable by a user wearing the display device. In order to enable the display image to be presented to the human eye 140 in its entirety, the marginal rays of the display image can also be projected to the human eye 140.
P in image source element 110, as shown in FIG. 21And P2Representing the edges of the image projection area used to generate and project the display image, which are part of the display image. Thus, the imaging light emitted from the edge is also projected to the human eye 104. P1The position being the most marginal position, P1The imaging light emitted from the position is 2001 imaging light, P2Is also the most marginal position, P2The imaging light rays emitted from the positions are 2002 imaging light rays, and the light rays between 2001 imaging light rays and 2002 imaging light rays are imaging light rays.
The image projection area of the image source element 110 may be a designated shape, for example, the image projection area may be one of a rectangle, a square, and a circle. Taking fig. 3 as an example, fig. 3 shows a schematic view of one example of an image source element 110 having a circular image projection area according to an embodiment of the disclosure. As shown in FIG. 3, the image projection area of the image source element 110 is circular, and a circular display image can be generated within the circular area, where P is the time P is1The position being the edge point, P, in the circular area closest to the human eye 1402The location is the edge point within the circular area that is furthest from the human eye 140.
Taking fig. 4 as an example, fig. 4 shows a schematic diagram of an example in which the image projection area of the image source element 110 of an embodiment of the present disclosure is rectangular. As shown in FIG. 4, the image projection area of the image source element 110 is rectangular, and a rectangular display image can be generated in the rectangular area, in which case P is1The position is an edge position on the side (shown by a thick solid line) nearest to the human eye 140, P2The position is the edge position on the side furthest from the human eye 140 (shown in bold lines). The image projection area of the image source element 110 is described below as being rectangular.
In one example, the imaging light emitted from the edge of the image projection area is edge imaging light, and the edge imaging light in the imaging light emitted from the image source element 110 may be set, for example, 2001 imaging light and 2002 imaging light may be set. For example, a hole of a prescribed length is provided at the position of the human eye 140, the light passing through the hole and projected to the human eye 140 is imaging light, and the prescribed length is set appropriately so that 2001 imaging light and 2002 imaging light are projected from the edge of the hole to the human eye 140, so that 2001 imaging light and 2002 imaging light become edge imaging light.
In another example, if there is an edge position where at least one of a reflection point on the light splitting element 120, a reflection point on the light splitting element 130, a transmission point on the light splitting element 120, and an incidence point to the human eye 140 of the imaging light emitted by the image source element 110 belongs to the field of view of the element or the human eye, it can be determined that the imaging light is an edge imaging light. Taking fig. 2 as an example, the reflection point of the 2001 imaging ray on the light splitting element 120 is point B, the reflection point on the light splitting element 130 is point C, the transmission point on the light splitting element 120 is point D, and the incidence point to the human eye 140 is point E, and when point B and/or point D are at the edge position of the light splitting element 120, point C is at the edge position of the light splitting element 130, and/or point E is at the edge position of the visual field range of the human eye 140, it can be determined that the 2001 imaging ray is an edge imaging ray.
In the embodiments of the present disclosure, the display device may be one of a virtual reality device, an augmented reality device, and the like. The virtual reality device may refer to the description corresponding to fig. 2, and the augmented reality device may take fig. 5 as an example. Fig. 5 shows a schematic diagram of another example of a display device of an embodiment of the present disclosure, as shown in fig. 5, a human eye 140 may receive imaging light of a real scene in addition to a display image projected by an image source element 110, and the imaging light of the real scene may present the real scene to the human eye 140. In this way, the human eye 140 can simultaneously see the virtual scene formed by the display image and the real scene, thereby achieving the effect of augmented reality.
The real scene imaging rays include edge imaging rays that are used to define the extent of the real scene presented to the human eye 140. As shown in fig. 5, the edge imaging ray of the real scene is 5001 imaging ray and 5002 imaging ray, and the portion between 5001 imaging ray and 5002 imaging ray is the real scene presented to the human eye 140. In one example, edge imaging rays of a real scene may be set, for example, using a housing of a display device may limit the viewable range of the real scene, 5001 imaging rays and 5002 imaging rays being respectively uppermost edge imaging rays and lowermost edge imaging rays of the viewable range.
The light from image source element 110 includes non-imaging light, which is undesired light outside the imaging path, in addition to imaging light. In one example, imaging light from image source element 110 is projected to human eye 140 in the order of light splitting element 120, reflective element 130, and light splitting element 120. In the present disclosure, light rays emitted by image source element 110 that are not projected in that order to human eye 140 may be considered non-imaging light rays.
FIG. 6 shows a schematic diagram of one example of non-imaging light in a display device of an embodiment of the present disclosure. As shown in FIG. 6, the rays indicated by the dashed lines are non-imaging rays, 6001 the non-imaging rays from P1The non-imaging light ray emitted from the position and directly transmitted to the human eye 140 through the light splitting element 120 is from P60022Position hairAnd is transmitted directly to the human eye 140 via the light splitting element 120. 6003 the non-imaging light is emitted from a position within the image projection area, reflected by the reflection element 130 to the beam splitting element 120, and transmitted by the beam splitting element 120 to the human eye 140.
In one example of the present disclosure, the optical imaging device may further include a circular polarizer attached to or near the image source element 110 on a side facing the light splitting element 120, and the light splitting element 120 includes a polarizer and a wave plate attached to a side of the polarizer facing the reflective element 130, and the wave plate may be an 1/4 wave plate. The reflective element 130 may comprise a transflective element.
The imaging light of the virtual scene image emitted by the image source element 110 is transmitted to the light splitting element 120 through the circular polarizer, and is reflected to the transflective element through the light splitting element 120, the imaging light of the virtual scene image is reflected by the transflective element and is transmitted to the eye position through the light splitting element, and the imaging light of the real scene image is transmitted to the eye position through the transflective element and the light splitting element 120 in sequence.
In one example of the present description, the optical imaging device further includes a first polarizer attached to or adjacent to the image source element 110 on a side facing the light splitting element, the light splitting element 120 includes a transflective element, and the reflective element 130 includes a second polarizer.
The imaging light of the virtual scene image emitted by the image source element 110 is transmitted to the transflective element through the first polarizer, and is reflected to the second polarizer through the transflective element, the second polarizer reflects the imaging light of the virtual scene image and is transmitted to the eye position through the transflective element, and the imaging light of the real scene image sequentially transmits to the eye position through the second polarizer and the transflective element.
The display device further comprises an absorbing element having a shape and an arrangement position in the display device such that the absorbing element absorbs non-imaging light rays of the scene to be displayed and does not obstruct imaging light rays for generating a display image of the scene to be displayed.
In the disclosed embodiment, when the display device is a virtual reality device, the scene to be displayed is a virtual scene of the display image generated for the image source element 110. At this point, the absorbing element does not block imaging light generated by the image source element 110 (e.g., 2001 and 2002 imaging light).
When the display device is an augmented reality device, the scene to be displayed includes a real scene and a virtual scene. At this point, the absorbing elements do not block the imaging light generated by the image source element 110 (such as 2001 and 2002 imaging light) as well as the imaging light of the real scene (such as 5001 and 5002 imaging light).
In one example, the absorbent element may include a substrate and an absorbent layer. An absorbing layer may be located on the surface of the substrate to form an absorbing element, and the absorbing layer may be adapted to absorb light impinging on the absorbing layer. Neither the base nor the absorbing layer of the absorbing element blocks the imaging light used to generate the display image of the scene to be displayed.
In one example, the absorption layer may be formed in a planar structure or a concave structure. Fig. 7 is a schematic view showing an example in which the absorption layer of the absorbent member of the embodiment of the present disclosure is a planar structure, and as shown in fig. 7, the absorbent member includes an absorption layer 150-1 and a substrate 150-2, the absorption layer 150-1 is a planar structure, and the absorption layer 150-1 and the substrate 150-2 are combined together to constitute one absorbent member.
Fig. 8 is a schematic view showing an example in which the absorption layer of the absorbent member of the embodiment of the present disclosure has a concave structure, and as shown in fig. 8, the absorbent member includes an absorption layer 150-1 having a concave structure, and the absorption layer 150-1 is recessed into the side of the base 150-2.
The following description will be given taking the absorbing layer as a planar structure as an example.
In one example, the absorption layer is formed in an array of microstructures, with recesses formed in two adjacent microstructures in the array of microstructures. The microstructure in the absorption layer may be specified. In one example, the microstructures in the microstructure array may include at least one of a triangle, a parallelogram, a trapezoid, and a rectangle.
Fig. 9 shows a schematic diagram of one example of microstructures formed as an absorption layer distributed in an array of microstructures according to an embodiment of the present disclosure. As shown in fig. 9, the microstructure shown in fig. 1 is a triangle, the microstructure shown in fig. 2 is a parallelogram, the microstructure shown in fig. 3 is a trapezoid, and the microstructure shown in fig. 4 is a rectangle.
In one example, the array distribution of microstructures may also be specified, and the array distribution of different microstructures may be different. For example, the array distribution of the triangular structures is spaced apart by 10 microns, i.e., two adjacent triangular structures are spaced apart by 10 microns. The array distribution of the parallelograms is spaced 20 microns apart, i.e. two adjacent parallelogram structures are spaced 20 microns apart.
In this example, the light rays may be reflected multiple times by the absorption layer distributed by the microstructure array, and may be absorbed once during each reflection, after which the light rays may be substantially or even completely eliminated.
In one example, the planar structured or recessed structured surface of the absorbent layer has an absorbent coating. In this example, the recessed feature surface of the absorber layer comprises a microstructured surface. When light is projected to the absorption layer, the light is reflected on the surface of the microstructure for multiple times, the surface of the microstructure (namely the inner surface of the absorption layer) is provided with an absorption coating, and the absorption coating absorbs the light for multiple times in the multiple reflection process so as to achieve the purpose of absorbing the light.
Taking fig. 9 as an example, when the microstructure is a triangular structure, the surface of the triangular structure has an absorption coating, light is reflected on the surfaces of two adjacent triangular structures for multiple times, and the absorption coatings on the surfaces of the two triangular structures absorb the light for multiple times until the light is completely absorbed.
In one example, the absorption band of the absorptive coating includes the light emission band and/or the entire visible band of the image source element 110.
In one example of the present disclosure, the absorbing element may include a first absorbing element attached at an edge portion of the image source element 110 at a position near the human eye 140 and extending toward the light splitting element. The human eye 140 and the reflective element 130 are respectively located at two sides of the light splitting element 120, and the reflective element 130 can reflect the imaging light to the human eye 140.
In this example, the attachment may be the first absorbing element being in contact with the image source element 110, or the first absorbing element being connected with the image source element 110. The edge portion is an area of the edge perimeter, and the edge portion proximate to the location of the human eye 140 includes a portion of the area of the edge perimeter of the image source element 110 proximate to the location of the human eye 140.
Taking fig. 4 as an example, the image source element 110 shown in fig. 4 is rectangular, and the edge of the image source element 110 near the position of the human eye 140 is an edge on the left, and the edge portion may include the edge and P1The portion between the belonging edges (thick solid lines in fig. 4).
In this example, the absorbing element may be a polygonal structure with at least one end attached to an edge portion of the image source element 110 at a location proximate to the human eye 140 and the other ends not obstructing the imaging light used to generate the display image of the scene to be displayed.
In one example, the first absorbing element is surface attached to the light-splitting element 120, and the surface attachment area on the light-splitting element 120 does not overlap with the coverage area of the imaging light at the light-splitting element 120.
In this example, the area covered by the light splitting element 120 is the area that reflects and transmits the imaging light, where the imaging light includes the imaging light from the image source element 110 and the imaging light of the real scene. Taking fig. 5 as an example, the imaging light emitted by the image source element 110 includes 2001 imaging light and 2002 imaging light, and the imaging light of the real scene includes 5001 imaging light and 5002 imaging light.
The edge of the coverage area is determined by the reflection point and the transmission point of the edge imaging light emitted from the image source element 110 on the light splitting element 120, and the transmission point of the edge imaging light of the real scene on the light splitting element 120. In one example, the point closest to the edge of the light splitting element 120 is determined among the reflection point and the transmission point of the edge imaging light emitted from the image source element 110 on the light splitting element 120 and the transmission point of the edge imaging light of the real scene on the light splitting element 120, and then the point may be determined to be one of the points included in the edge of the coverage area.
Taking fig. 5 as an example, as shown in fig. 5, the reflection point of the 2001 imaging light ray emitted by the image source element 110 on the light splitting element 120 is point B, the transmission point is point D, and the transmission point of the 5001 imaging light ray of the real scene on the light splitting element 120 is point E. If the point closest to the edge of the light splitting element 120 among the three points is point B, the point at which point B belongs to the edge of the coverage area, and both points D and E belong to the points within the coverage area can be determined.
Fig. 10 illustrates a schematic view of one example of a first absorption member in a display device of an embodiment of the present disclosure. As shown in fig. 10, the first absorption element 150 is surface-attached to the light splitting element 120, and a point 2001 at which the imaging light is reflected on the light splitting element 120 belongs to a point at which the imaging light is at the edge of the coverage area of the light splitting element 120. The surface attachment area of the first absorbing element 150 does not overlap the image light in the area covered by the light splitting element 120, and the absorbing layer of the first absorbing element 150 may absorb non-image light emitted from the image source element 110.
In one example, P of image source element 110 is such that the surface attachment area of first absorbing element 150 does not overlap the coverage area of imaging light at light-splitting element 1202Non-imaging light projected to the human eye 140 from the location may be absorbed by the edge portion of the first absorbing element 150. As shown in FIG. 10, P2The non-imaging light rays emitted from the location that impinge upon the human eye 140 are 6002 (shown in dashed lines), which 6002 are absorbed by the absorbing layer at the lower edge portion of the first absorbing element 150.
In the above example, the surface attachment of the first absorbing member 150 with the light splitting member 120 may fix the position of the first absorbing member 150 in the display device.
In one example, the outer edge of the surface attachment area of the first absorbing element 150 on the light-splitting element 120 at least partially coincides with the outer edge of the footprint of the light-splitting element 120 for the imaging light.
Fig. 11 illustrates a schematic view of another example of the first absorption member 150 in the display device of the embodiment of the present disclosure. As shown in fig. 11, 2001 the reflection point of the imaging light on the light splitting element 120 belongs to the point of the imaging light at the edge of the coverage area of the light splitting element 120. The outer edge of the surface attachment area of the first absorbing element 150 at least partially coincides with the outer edge of the imaging light in the cover area of the light splitting element 120, wherein the coinciding outer edge portions do not belong to the absorbing layer and the first absorbing element 150 does not absorb 2001 imaging light.
Fig. 12 shows a schematic diagram of one example of the outer edge of the surface attachment area of the first absorbing element 150 on the light-splitting element 120 and the outer edge of the coverage area of the light-splitting element 120 at least partially coinciding for imaging light rays, according to an embodiment of the present disclosure. The viewing angle of fig. 12 is a viewing angle perpendicular to the light splitting element 120.
As shown in fig. 12, on the surface of the light-splitting element 120, the surface attachment area of the first absorption element 150 on the light-splitting element 120 is circular, the coverage area of the imaging light on the light-splitting element 120 is trapezoidal, the upper base of the trapezoid including P as the outer edge of the coverage area1Position, outer edge of lower bottom as covering area includes P2Location. The rounded surface attachment area is tangent to the upper base of the trapezoid, i.e. there is at least a partial overlap.
In one example, after determining the arrangement position of the first absorbing element 150 in the head-mounted display device, the first absorbing element 150 may be further shaped such that the first absorbing element 150 does not obstruct the imaging light used to produce the display image of the scene to be displayed.
The shape of the first absorbent member 150 may include the shape of the substrate and the shape of the absorbent layer. In one example, when the absorption layer is thin on the surface of the substrate, the thickness of the absorption layer may not be considered, and thus the shape of the absorption layer may not be considered.
In one example, the surface of the first absorbing element 150 on the side close to the light splitting element 120 is parallel to the surface of the light splitting element 120, and the surface of the first absorbing element 150 on the side close to the image source element 110 is parallel to the surface of the image source element 110.
In another example, when the absorbing layer of the first absorbing member 150 is a planar structure, the plane of the absorbing layer may form different angles with the plane of the image source member 110, such as a right angle.
In one example, the first absorbing element 150 is not surface attached to the light splitting element 120 such that the first absorbing element 150 is capable of absorbing edge non-imaging light projected to the location of the human eye 140 emanating from the edge of the image source element 110 that generates the image away from the location of the human eye 140.
Taking fig. 10 as an example, the edge of the image generated in image source element 110 that is away from the location of human eye 140 includes P2Position, P2The non-imaging light rays emitted by the location that are projected to the location of the human eye 140 are 6002 non-imaging light rays (light rays represented by dashed lines in fig. 10). In this example, the first absorbing element 150 is capable of absorbing the non-imaging light ray 6002.
Fig. 13 illustrates a schematic view of another example of the first absorption member 150 in the display device of the embodiment of the present disclosure. As shown in fig. 13, the first absorbing element 150 is not surface attached to the light splitting element 120, the lower edge portion of the first absorbing element 150 may absorb 6002 non-imaging light, and the position on the first absorbing element 150 at which the non-imaging light is absorbed 6002 is a specified distance from the nearest edge.
In one example, the edge of the absorbing layer on the side of the first absorbing element 150 adjacent to the light splitting element 120 coincides with the edge non-imaging light. In this example, the absorber layer edge belongs to the absorber layer of the first absorber element 150, which can be used to absorb non-imaging light.
Fig. 14 illustrates a schematic view of another example of the first absorption member 150 in the display device of the embodiment of the present disclosure. As shown in fig. 14, the side of the first absorbing element 150 close to the light splitting element 120 is the lower side of the first absorbing element 150, and the edge of the absorbing layer of the lower side coincides with the non-imaging light ray 6002, i.e. the edge of the absorbing layer can absorb the non-imaging light ray 6002.
In this example, the surface of the first absorbing element 150 on the side closer to the image source element 110 does not block imaging light. Taking fig. 14 as an example, the surface may be arranged parallel to the light splitting element 120 so as not to block imaging light, where the non-blocked imaging light includes imaging light from the image source element 110 and light from the real scene.
In one example, the distance between the edge of the first absorbing element 150 near the light splitting element 120 and the image source element 110 may be set to a length in a range of 1mm to 90mm, and the angle formed by the first absorbing element 150 and the horizontal plane toward the imaging light may be set to an angle in a range of 50 ° to 120 °.
Figure 15 illustrates a schematic view of one example of the height and included angle of the first absorbent element 150 of an embodiment of the present disclosure. As shown in fig. 15, the dotted line is a horizontal plane, and the first absorption member 150 is at an angle θ with respect to the horizontal plane, which may be set at any angle in the range of 50 ° to 120 °. The edge of the first absorbing element 150 near the light splitting element 120 is at a distance H from the image source element 110, which H may be set to any length in the range of 1mm to 90 mm. The set theta and H may determine the position of the first absorbing member 150 in the display device.
In one example, the absorbing layer of the first absorbing element 150 is disposed towards the light emitted by the image source element 110 to absorb non-imaging light emitted by the image source element 110. For example, as shown in fig. 10, 11, 13, and 14, the absorbing layers of the first absorbing element 150 all face light emitted from the image source element 110, e.g., 6002 non-imaging light.
In one example of the present disclosure, the first absorbing element 150 is not attached to the image source element 110, and also enables the first absorbing element 150 to absorb non-imaging light in the scene to be displayed, and not to block imaging light used to generate the display image of the scene to be displayed.
In this example, the supporting point of the first absorbing element 150 in the display device may be a bracket in the display device and may also be the light splitting element 120, i.e. the first absorbing element 150 is attached to the light splitting element 120. The supporting point serves to fix the arrangement position of the first absorption member 150 in the display device.
Fig. 16 illustrates a schematic view of another example of the first absorption member 150 in the display device of the embodiment of the present disclosure. As shown in fig. 16, the first absorbing element 150 is disposed horizontally with the absorbing layer of the first absorbing element 150 facing upward for absorbing non-imaging light from the image source element 110. The area of the absorbing layer of the first absorbing element 150 is at least such that the first absorbing element 150 can absorb the edge non-imaging rays 6001 and 6002.
In one example, referring to fig. 16, the right absorbing layer edge of the first absorbing element 150 may absorb 6002 non-imaging light rays and the left absorbing layer edge may absorb 6001 non-imaging light rays.
In one example of the present disclosure, the absorbing element may further include a second absorbing element that may be attached on an edge portion of the image source element 110 away from the position of the human eye 140 and extend toward the light splitting element 120.
In this example, the edge portion remote from the position of the human eye 140 includes a portion of the area of the edge of the image source element 110 remote from the position of the human eye 140. Taking fig. 4 as an example, the image source element 110 shown in fig. 4 is rectangular, and the edge of the image source element 110 far away from the human eye 140 is the right edge, and the edge portion may include the right edge and P2The portion between the belonging edges (thick solid lines in fig. 4).
In this example, the absorbing layer of the second absorbing element is disposed towards light emitted by the image source element 110. The non-imaging light rays that may be absorbed by the second absorbing element include non-imaging light rays emitted by the image source element 110 that do not pass through the light splitting element 120, reach the reflective element 130 directly, and are reflected to the human eye 140 via the reflective element 130.
Taking fig. 17 as an example, fig. 17 shows a schematic view of one example of the second absorbing element 160 in the display device of the embodiment of the present disclosure. As shown in fig. 17, a beam 6003 of non-imaging light emitted from the image source device 110 is not directly projected onto the light splitting device 120, but directly projected onto the reflective device 130, reflected to the light splitting device 120 by the reflective device 130, and transmitted to the human eye 140 by the light splitting device 120. The non-imaging light ray 6003 can be absorbed by the second absorbing element 160.
In one example, the shape of the second absorbing element 160 may be specified without the second absorbing element 160 blocking imaging light of a display image of a scene to be displayed.
Taking fig. 17 and 18 as an example, fig. 18 shows a schematic view of another example of the second absorbing element 160 in the display device of the embodiment of the present disclosure. The absorbing layer of second absorbing element 160 in fig. 17 and 18 is arranged in a plane parallel to edge imaging light ray 2002, where the area of the absorbing layer can be represented by the height of the distance from the lower edge of second absorbing element 160 to image source element 110. The shape of the second absorbent member 160 in fig. 17 is different from the shape of the second absorbent member 160 in fig. 18. The distance height of the second absorbent member 160 in fig. 17 is h, the distance height of the second absorbent member 160 in fig. 18 is h ', and h is greater than h', indicating that the area of the second absorbent member 160 in fig. 17 is greater than the area of the second absorbent member 160 in fig. 18. The second absorbing element 160 in both fig. 17 and 18 can absorb non-imaging light rays of the scene to be displayed without obstructing imaging light rays used to generate the display image of the scene to be displayed.
In one example, the distance between the edge of the second absorption element 160 close to the light splitting element 120 and the image source element 110 is set to a length in a range of 1mm to 90mm, and the included angle formed by the second absorption element 160 and the horizontal plane toward the imaging light is set to an angle in a range of 50 ° to 120 °.
In one example, the edge of the absorbing layer of the second absorbing element 160 on the side closer to the light splitting element 120 is in adjacent contact with but does not coincide with the intersection location where the edge imaging ray of the imaging rays from the image source element 110 that is distal from the location of the human eye 140 intersects the edge imaging ray of the real scene.
Fig. 19 shows a schematic view of another example of the second absorbing element 160 in the display device of the embodiment of the present disclosure. As shown in fig. 19, the edge imaging rays of the imaging rays from the image source element 110 that are far from the location of the human eye 140 include 2002 imaging rays, and the edge imaging rays of the real scene include 5001 imaging rays, the intersection location in this example includes a location G where the 2002 imaging rays intersect the 5001 imaging rays, and the adjacent contact but misalignment of the edge of the absorbing layer of the second absorbing element 160 on the side of the second absorbing element 160 near the light splitting element 120 with the intersection location may be such that the 2002 imaging rays and the 5001 imaging rays are not blocked or absorbed by the second absorbing element 160 when passing through the intersection location.
The second absorbing element 160 in this example is disposed at a position that can absorb the non-imaging light emitted from the image source element 110 and projected to the reflecting element 130 to a greater extent, so as to reduce the non-imaging light and improve the display quality of the display image of the scene to be displayed.
In one example, the surface of the absorbing layer of the second absorbing element 160 is disposed toward the image source element 110 for absorbing non-imaging light emitted from the image source element 110. For example, as shown in fig. 17 and 18, the surface of the absorbing layer of second absorbing element 160 faces light emitted from image source element 110, such as, for example, 6003 non-imaging light. In one example, the absorbing layer surface of the second absorbing element may be parallel to the edge imaging light rays emitted by the image source element closest to the second absorbing element.
The second absorbing element 160 does not block imaging light for the real scene. In one example, the surface of the second absorbing element 160 on the side near the imaged light ray area for the real scene may be a specified shape without obstructing the light rays of the real scene. For example, the surface of the second absorbing element 160 shown in fig. 17 on the side near the imaged light ray area for a real scene is parallel to the horizontal plane, and the edge is adjacent to, but not occluded by, the 5001 imaged light ray. The surface of the second absorbing element 160 near the image light area shown in fig. 18 is parallel to the horizontal plane and is spaced apart from the 5001 image light. The surface of the second absorbing element 160 on the side close to the imaging ray area shown in fig. 19 is parallel to the edge imaging ray of the real scene (i.e., 5001 imaging ray).
In another example, the second absorbing element 160 is not attached to the image source element 110, and also enables the second absorbing element 160 to absorb non-imaging light in the scene to be displayed without obstructing imaging light used to generate the display image of the scene to be displayed.
In this example, the supporting point of the second absorbing member 160 in the display device may be a bracket in the display device, and the supporting point on the bracket is used for fixing the position of the second absorbing member 160 in the display device.
Fig. 20 shows a schematic view of another example of the second absorbing element 160 in the display device of the embodiment of the present disclosure. As shown in fig. 20, the second absorbing element 160 is not attached to the image source element 110, and the absorbing layer of the second absorbing element 160 faces the light emitted from the image source element 110. The second absorbent member 160 is attached to a support (not shown) to secure the position.
In one example of the present disclosure, the absorbent member includes a first absorbent member 150 and a second absorbent member 160. Fig. 21 shows a schematic view of one example in which the display device of the embodiment of the present disclosure includes the first absorbing member 150 and the second absorbing member 160. As shown in fig. 21, the first absorbent member 150 is positioned on the left and the second absorbent member 160 is positioned on the right. Both the first absorbing element 150 and the second absorbing element 160 may absorb non-imaging light in a band display scene.
In one example of the present disclosure, the image source element 110 may include an aberration corrector for performing a correction process on the aberration of the imaging light emitted from the image source element 110 and emitting the corrected imaging light to the light splitting element 120.
Fig. 22 shows a schematic diagram of one example of a display device including a phase difference corrector of the embodiment of the present disclosure. As shown in fig. 22, the phase difference corrector 170 is located at the side of the image source element 110 from which the imaging light is emitted, so that the imaging light emitted from the image source element 110 is subjected to the correction process by the phase difference corrector 170.
The term "exemplary" used throughout this specification means "serving as an example, instance, or illustration," and does not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described technology. However, the techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described embodiments.
Alternative embodiments of the present disclosure are described in detail with reference to the drawings, however, the embodiments of the present disclosure are not limited to the specific details in the embodiments, and various simple modifications may be made to the technical solutions of the embodiments of the present disclosure within the technical concept of the embodiments of the present disclosure, and the simple modifications all belong to the protective scope of the embodiments of the present disclosure.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. A display device, comprising:
an optical imaging device comprising an image source element configured for optical path alignment, a light splitting element and a reflecting element; and
an absorbing element shaped and disposed in the display device such that the absorbing element absorbs non-imaging light rays of a scene to be displayed and does not obstruct imaging light rays used to generate a display image of the scene to be displayed.
2. The display device of claim 1, wherein the absorbing element comprises a first absorbing element attached at an edge portion of the image source element located near a human eye and extending toward the light splitting element,
the human eye position and the reflecting element are respectively positioned on two sides of the light splitting element, and the reflecting element can reflect imaging light rays to the human eye position;
the first absorption element is surface-attached with the light splitting element, and the surface attachment area on the light splitting element is not overlapped with the coverage area of the imaging light rays on the light splitting element; the outer edge of the surface attachment region is at least partially coincident with the outer edge of the cover region, wherein the surface attachment region is the region where the first absorption element is attached to the surface of the light-splitting element, and the cover region is the region where the imaging light covers the surface of the light-splitting element; the surface of the first absorption element close to one side of the light splitting element is parallel to the surface of the light splitting element, and the surface of the first absorption element close to one side of the image source element is parallel to the surface of the image source element;
or the first absorbing element is not surface attached with the light splitting element so that the first absorbing element can absorb edge non-imaging light, wherein the edge non-imaging light is non-imaging light projected to the human eye position emitted by an edge of the image source element away from the human eye position generating an image; the edge of the absorption layer of the first absorption element close to one side of the light splitting element blocks the edge non-imaging light, and the surface of the first absorption element close to one side of the image source element does not block the imaging light;
the absorbing element further comprises a second absorbing element attached to an edge portion of the image source element remote from the position of the human eye and extending towards the light splitting element;
the edge of the absorption layer of the second absorption element, which is close to one side of the light splitting element, is adjacently contacted with but not coincident with an intersection position, wherein the intersection position is obtained by intersecting edge imaging rays far away from the human eye position in imaging rays emitted by the image source element with edge imaging rays of a real scene,
the second absorbing element does not block imaging light rays for a real scene;
the surface of the second absorption element close to one side of the imaging light ray area aiming at the real scene is parallel to the edge imaging light ray under the real scene;
the surface of the absorption layer of the second absorption element is parallel to the edge imaging light rays emitted by the image source element and closest to the second absorption element;
the display equipment is augmented reality display equipment, and the display image of the scene to be displayed comprises a virtual scene image and a real scene image;
the absorbing element comprises a substrate layer and an absorbing layer, the surface of the absorbing layer being arranged to face light emitted by the image source element;
the absorption layer is formed in a planar structure or a concave structure;
the absorption layer is formed into a microstructure array distribution, and a recess is formed in two adjacent microstructures in the microstructure array;
the microstructures in the microstructure array comprise at least one structure of a triangle, a parallelogram, a trapezoid and a rectangle;
the surface of the planar structure or the concave structure of the absorption layer is provided with an absorption coating;
the absorption band of the absorption coating comprises the light-emitting band and/or the entire visible light band of the image source element;
the image source element comprises an aberration corrector, and the aberration corrector is used for correcting the aberration of the imaging light rays emitted by the image source element and transmitting the corrected imaging light rays to the light splitting element;
the distance between the edge of each absorption element close to the light splitting element and the image source element is set to be a length in a range from 1mm to 90mm, and an included angle formed by each absorption element and a horizontal plane and facing the imaging light is set to be an angle in a range from 50 degrees to 120 degrees;
the optical imaging device further comprises a circular polarizer attached to or close to one side of the image source element, which faces the light splitting element, the light splitting element comprises a polarizer and a wave plate attached to one side of the polarizer, which faces the reflecting element, the reflecting element comprises a semi-reflecting and semi-transmitting element, imaging light of a virtual scene image emitted by the image source element is transmitted to the light splitting element through the circular polarizer and is reflected to the semi-reflecting and semi-transmitting element through the light splitting element, the imaging light of the virtual scene image is reflected by the semi-reflecting and semi-transmitting element and is transmitted to the position of the human eye through the light splitting element, and the imaging light of a real scene image is transmitted to the position of the human eye through the semi-reflecting and semi-transmitting element and the light splitting element in sequence; or, the optical imaging device further includes a first polarizer attached to or close to the image source element and facing the light splitting element, the light splitting element includes a transflective element, and the reflective element includes a second polarizer, wherein imaging light of a virtual scene image emitted by the image source element is transmitted to the transflective element through the first polarizer and is reflected to the second polarizer through the transflective element, the second polarizer reflects imaging light of the virtual scene image and is transmitted to the eye position through the transflective element, and imaging light of a real scene image is transmitted to the eye position through the second polarizer and the transflective element in sequence;
the image source element, the light splitting element and the reflecting element form a composite air guide structure; or the image source element, the light splitting element and the reflecting element form a free-form surface prism system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020441865.2U CN211426944U (en) | 2020-03-31 | 2020-03-31 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020441865.2U CN211426944U (en) | 2020-03-31 | 2020-03-31 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211426944U true CN211426944U (en) | 2020-09-04 |
Family
ID=72253793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020441865.2U Active CN211426944U (en) | 2020-03-31 | 2020-03-31 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211426944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308715A (en) * | 2020-03-31 | 2020-06-19 | 优奈柯恩(北京)科技有限公司 | Display device |
| CN112965253A (en) * | 2021-03-24 | 2021-06-15 | Oppo广东移动通信有限公司 | Optical system and wearable augmented reality display device |
-
2020
- 2020-03-31 CN CN202020441865.2U patent/CN211426944U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308715A (en) * | 2020-03-31 | 2020-06-19 | 优奈柯恩(北京)科技有限公司 | Display device |
| CN112965253A (en) * | 2021-03-24 | 2021-06-15 | Oppo广东移动通信有限公司 | Optical system and wearable augmented reality display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111308715B (en) | Display device | |
| EP1886179B1 (en) | Combined head up display | |
| KR102266550B1 (en) | Systems for Imaging in Air | |
| JP2022023860A (en) | Field curvature corrected display | |
| US11579446B2 (en) | Augmented reality optical module | |
| CN211426944U (en) | Display device | |
| JP5385080B2 (en) | Display device | |
| CN113436560B (en) | Imaging optical system and display device | |
| JP2014202835A (en) | Illumination device and image display device | |
| US11625944B2 (en) | Fingerprint recognition module, screen assembly, and electronic device | |
| US11561396B2 (en) | Head-up display device and transportation device | |
| US20080151250A1 (en) | Lighting device and optical apparatus | |
| US20230194872A1 (en) | Head-mounted display device | |
| JP3658246B2 (en) | Image display device and image projection device | |
| JP2007025652A (en) | Image display device | |
| CN211577567U (en) | Head-mounted display device | |
| JP2008181155A (en) | Image display system | |
| JP7186964B2 (en) | vehicle display | |
| JPH0618810A (en) | Display device | |
| CN216848350U (en) | Optical module and head-mounted display device | |
| CN219039487U (en) | Near-eye display optical system and near-eye display equipment | |
| CN210864210U (en) | AR display device, AR wearing equipment | |
| US11899215B1 (en) | Head mounted display, display device and image display method thereof | |
| JP7176687B2 (en) | vehicle display | |
| JP2008083591A (en) | Image display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |