WO2024254919A1 - 显示装置 - Google Patents

显示装置 Download PDF

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Publication number
WO2024254919A1
WO2024254919A1 PCT/CN2023/104765 CN2023104765W WO2024254919A1 WO 2024254919 A1 WO2024254919 A1 WO 2024254919A1 CN 2023104765 W CN2023104765 W CN 2023104765W WO 2024254919 A1 WO2024254919 A1 WO 2024254919A1
Authority
WO
WIPO (PCT)
Prior art keywords
contour
optical
optical element
profile
display device
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.)
Ceased
Application number
PCT/CN2023/104765
Other languages
English (en)
French (fr)
Inventor
杨欢丽
何瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to EP23769097.9A priority Critical patent/EP4730012A1/en
Priority to DE112023000079.4T priority patent/DE112023000079B4/de
Priority to US18/550,955 priority patent/US20250035916A1/en
Publication of WO2024254919A1 publication Critical patent/WO2024254919A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/142—Adjusting of projection optics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B25/00—Eyepieces; Magnifying glasses
    • G02B25/002—Magnifying glasses
    • G02B25/004—Magnifying glasses having binocular arrangement
    • 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
    • G02B27/0075—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. increasing, the depth of field or depth of focus
    • 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
    • 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
    • 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
    • G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2066—Reflectors in illumination beam
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/28—Reflectors in projection beam
    • 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
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view

Definitions

  • the present application relates to the field of display, and in particular to a display device.
  • VR virtual reality
  • FOV field of view
  • the optical machine lens In order to obtain a better field of view (larger FOV), the distance between the observation point (eye) and the lens is generally shortened or the size of the lens is increased. However, the space for shortening the distance between the eye and the lens is limited. Excessive reduction will affect wearing comfort. If the lens is too large, the weight of the product will increase, affecting the user's visual experience.
  • the embodiments of the present application provide a display device, which can solve the problem that the existing display device cannot reduce the weight of the display device while achieving a larger field of view.
  • An embodiment of the present application provides a display device, including two optical engines arranged in parallel along a first direction, each optical engine including:
  • a display screen having a first side surface and a second side surface arranged opposite to each other along the first direction, wherein the first side surface is close to the other optical machine;
  • an optical element located at a display side of the display screen, and used for processing a display image of the display screen and transmitting the image to a corresponding observation point;
  • the optical element has a first contour and a second contour arranged opposite to each other along the first direction, and the first contour is close to the other optical machine;
  • the principal optical axis of the optical element passes through the display screen and is located at a side of the geometric center of the display screen close to the other optical machine; the minimum value of the distance between the first contour and the principal optical axis of the optical element is smaller than the minimum value of the distance between the second contour and the principal optical axis of the optical element.
  • a minimum value of the distance between the first side surface and the principal optical axis of the optical element is smaller than a minimum value of the distance between the second side surface and the principal optical axis of the optical element.
  • the display screen has a third side surface and a fourth side surface relative to each other along the second direction, the third side surface is connected between the first side surface and the second side surface, the fourth side surface is connected between the first side surface and the second side surface, and the second direction forms an angle with the first direction; a first notch is formed at the connection between the third side surface and the first side surface.
  • the optical element has a third profile and a fourth profile arranged relatively to each other along the second direction; the third profile is connected between the first profile and the second profile, and the fourth profile is connected between the first profile and the second profile; the minimum value of the distance between the third profile and the main optical axis of the optical element is smaller than the minimum value of the distance between the second profile and the main optical axis of the optical element.
  • the optical element has a third profile and a fourth profile arranged relatively to each other along the second direction; the third profile is connected between the first profile and the second profile, and the fourth profile is connected between the first profile and the second profile; the minimum value of the distance between the fourth profile and the main optical axis of the optical element is smaller than the minimum value of the distance between the second profile and the main optical axis of the optical element.
  • a second notch is formed at the connection between the fourth side surface and the first side surface.
  • a third notch is formed at the connection between the fourth side surface and the second side surface.
  • a fourth notch is formed at the connection between the third side surface and the second side surface.
  • the connecting surface formed by the first notch is at an angle of 145° to the first side surface.
  • the connecting surface formed by the first notch is at a 145° angle with the third side surface.
  • the cross-section of the display screen is a regular octagon.
  • the first contour, the second contour, the third contour and the fourth contour are arc-shaped, and the curvatures of the first contour, the second contour, the third contour and the fourth contour are different.
  • the first contour, the third contour and the fourth contour are straight lines, the second contour is an arc, and the center of curvature of the second contour is located on the principal optical axis of the optical element; the first contour and the third contour are connected by a circular arc, and the first contour and the fourth contour are connected by a circular arc.
  • the orthographic projection of the display screen on the optical element is located inside the optical element.
  • a minimum value of a distance between the fourth contour and the principal optical axis of the optical element is smaller than a minimum value of a distance between the third contour and the principal optical axis of the optical element.
  • the optical element has an optical center, and the main optical axis of the optical element passes through the optical center; the optical centers of the optical elements of the two optical machines form a first line, and the geometric centers of the display screens of the two optical machines form a second line, and the first line is parallel to the second line; the main optical axis of the optical element passes through the second line.
  • the optical element has an optical center, and the main optical axis of the optical element passes through the optical center; the optical centers of the optical elements of the two optical machines form a first line, and the geometric centers of the display screens of the two optical machines form a second line, and the first line is parallel to the second line; the main optical axis of the optical element is at an angle to the second line and does not intersect.
  • the sum of the field of view angles of the observation points corresponding to the two optical machines is greater than or equal to 120°.
  • the combined angle of the field of view angles of the observation points corresponding to the two optical machines is greater than or equal to 80°.
  • the field of view angles of the observation points corresponding to the two optical machines are greater than or equal to 90°.
  • the display device includes two optical machines arranged in parallel along a first direction, each optical machine includes a display screen and an optical element, the display screen has a first side surface and a second side surface arranged oppositely along the first direction, the first side surface is close to the other optical machine, the optical element is located on the display side of the display screen, and the optical element is used to process the display image of the display screen and transmit it to the corresponding observation point; the optical element has a first contour and a second contour arranged oppositely along the first direction, the first contour is close to the other optical machine; wherein the main optical axis of the optical element passes through the display screen and is located on the side of the geometric center of the display screen close to the other optical machine; the minimum value of the distance between the first contour and the main optical axis of the optical element is less than the minimum value of the distance between the second contour and the main optical axis of the optical element.
  • the present application sets the minimum value of the distance between the first contour and the main optical axis of the optical element to be less than the minimum value of the distance between the second contour and the main optical axis, so that the inner side of the optical element is a special-shaped structure, that is, when the observation point is at the same distance from the optical element and the same horizontal field of view, the size of the optical element can be reduced, thereby reducing the weight of the display device and improving the user experience.
  • FIG1 is a schematic structural diagram of an existing display device
  • FIG2 is a schematic diagram of a top view of a conventional optical machine
  • FIG3 is a schematic diagram of the structure of a display device provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of a top view of an optical machine provided in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a top view of the structure of another optical machine provided in an embodiment of the present application.
  • X first direction
  • Y second direction
  • O O1
  • P P1, geometric center
  • Q Q1, optical center
  • S observation point
  • L first connecting line
  • N second connecting line.
  • the embodiment of the present application provides a display device, which is described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.
  • the display device 10 includes two optical machines 100 arranged in parallel along a first direction X.
  • the human eyes correspond to the two optical machines 100 respectively, and the position of the human eyes corresponds to the observation point S of the optical machine 100.
  • the first direction X is the distribution direction of the human eyes, that is, the horizontal direction.
  • the direction indicated by the arrow in the first direction X is the distribution direction of the left eye and the right eye.
  • Each optical engine 100 includes a display screen 110 and an optical element 120, and the optical element 120 can be composed of one or more lenses.
  • the optical element 120 is located on the display side of the display screen 110, and the display screen 110 is used to display the picture, and the optical element 120 is used to process the display picture of the display screen 110 and transmit it to the corresponding observation point S. That is to say, when the display device 10 is used, the display picture of the display screen 110 is refracted or reflected by the optical element 120 to generate an enlarged image 130 at a distance, and then is received by the human eye, and the human eye views the enlarged image 130 to achieve immersive vision.
  • the display screen 110 has a first side surface 111 and a second side surface 112 arranged relatively along a first direction X, and the first side surface 111 is close to another optical machine 100, that is, the first side surface 111 is the inner side close to the nose side when the human eye observes, and the second side surface 112 is the outer side when the human eye observes.
  • the optical element 120 has a first contour 121 and a second contour 122 arranged relatively along the first direction X, and the first contour 121 is close to another optical machine 100.
  • the position between the first side surface 111 and the first contour 121 is related to the inner edge of the enlarged image 130 observed by the human eye
  • the position between the second side surface 112 and the second contour 122 is related to the outer edge of the enlarged image 130 observed by the human eye, thereby affecting the horizontal field of view of the human eye at the corresponding observation point S, and further affecting the effect of the immersive experience.
  • the contour referred to in the embodiment of the present application is the outer contour of the positive projection of the optical element 120 on the plane where the display screen 110 is located, and the first contour 121 corresponds to the first side surface 111 of the display screen 110, and the second contour 122 corresponds to the second side surface 112 of the display screen 110, that is, the first contour 121 is the inner side close to the nose side when observed by the human eye, and the second contour 122 is the outer side when observed by the human eye.
  • the main optical axis O of the optical element 120 passes through the display screen 110 and is located on the side of the geometric center P of the display screen 110 close to the other optical engine 100. It should be noted that, for the optical element 120, its main optical axis O or optical center Q is fixed after the optical element 120 is formed, and has nothing to do with whether the optical element 120 is subsequently cut into other shapes, while the geometric center P of the display screen 110 will change as the shape of the display screen 110 changes.
  • the geometric center P1 of the display screen 110a is located on the principal optical axis O1 of the optical element 120a, that is, the principal optical axis O1 of the optical element 120a passes through the optical center Q1 of the optical element 120a and the geometric center P1 of the display screen 110a, wherein the dotted circle b is the theoretical viewing angle range of a single optical machine 100 before special-shaped cutting.
  • the minimum value of the distance between the first contour 121 and the main optical axis O of the optical element 120 is smaller than the minimum value of the distance between the second contour 122 and the main optical axis O of the optical element 120, that is, the inner side of the optical element 120 is cut into a special shape to form the first contour 121 (as shown in Figures 4 and 5, the first contour 121 after special shape cutting is located in the dotted circle a), so that the size of the optical element 120 can be reduced while the horizontal field of view angle remains unchanged, thereby reducing the overall weight of the display device 10 and improving the user experience.
  • the horizontal field of view angle ( ⁇ /2) refers to the angle between the two side edges in the horizontal direction of the enlarged image 130 formed after the display screen of a single display screen 110 is enlarged by the optical element 120 and the line connecting the human eyes
  • the overall horizontal field of view angle refers to the sum of the angles between the outer edges of the enlarged image 130 formed after the display screens of the two display screens 110 are enlarged by the corresponding optical elements 120 and the line connecting the human eyes relative to the main optical axis O of the optical element 120.
  • the area corresponding to the nose between the two eyes of the human body will produce a certain degree of occlusion on the actual viewing angle, and the occluded part corresponds to the inner area of the magnified image 130. Therefore, when the inner side of the optical element 120 is cut into a special shape, although the viewing angle of the inner side of the single eye is reduced, the overall horizontal viewing angle of the two eyes remains unchanged, which will not have a significant impact on the overall immersive vision, and can also reduce the overall weight of the display device 10.
  • the cutting size can be adjusted according to the occlusion of the viewing angle by the area corresponding to the nose, so as to avoid a significant impact on the user's immersive experience while reducing the size of the optical element 120.
  • the display device 10 includes two optical machines 100 arranged in parallel along a first direction X, each optical machine 100 includes a display screen 110 and an optical element 120, the display screen 110 has a first side surface 111 and a second side surface 112 arranged relatively along the first direction X, the first side surface 111 is close to the other optical machine 100, the optical element 120 is located on the display side of the display screen 110, and the optical element 120 is used to process the display image of the display screen 110 and transmit it to the corresponding observation point S; the optical element 120 has a first contour 121 and a second contour 122 arranged relatively along the first direction X; wherein the main optical axis O of the optical element 120 passes through the display screen 110 and is located on a side of the geometric center P of the display screen 110 close to the other optical machine 100; the minimum value of the distance between the first contour 121 and the main optical axis O of the optical element 120 is less than the minimum value of the distance between the second contour 122 and the main optical axis O
  • the present application sets the minimum value of the distance between the first contour 121 of the optical element 120 and the main optical axis O to be smaller than the minimum value of the distance between the second contour 122 and the main optical axis O, so that the inner side of the optical element 120 is cut into a special-shaped structure. That is, when the observation point S is at the same distance from the optical element 120 and the same horizontal field of view angle, the size of the optical element 120 can be reduced, thereby reducing the weight of the display device 10 and improving the user experience; conversely, when the aperture corresponding to the same optical element 120 is equal, a larger horizontal field of view angle can be achieved to improve the user's immersive visual experience.
  • the minimum value of the distance between the first side surface 111 of the display screen 110 and the main optical axis O of the optical element 120 is less than the minimum value of the distance between the second side surface 112 and the main optical axis O of the optical element 120.
  • the inner side of the display screen 110 can also be cut into a special shape (for example, the first side surface 111 after the special shape cutting in FIGS. 4 and 5 is at least partially located in the dotted circle b), so as to reduce the size of the display screen 110 while keeping the overall horizontal field of view unchanged, thereby reducing the weight of the display device 10, improving the user experience, and also improving the effective utilization rate of the display screen 110.
  • the embodiment of the present application mainly performs special-shaped processing on the inner sides of the display screen 110 and the optical element 120 to achieve a reduction in the size of the optical element 120 and the display screen 110 while keeping the overall horizontal field of view angle unchanged.
  • the display screen 110 has a third side surface 113 and a fourth side surface 114 relative to each other along the second direction Y, the third side surface 113 is connected between the first side surface 111 and the second side surface 112, the fourth side surface 114 is connected between the first side surface 111 and the second side surface 112, and the second direction Y forms an angle with the first direction X.
  • the third side surface 113 is the lower side when observed by the human eye
  • the fourth side surface 114 is the upper side when observed by the human eye
  • the second direction Y is the vertical direction observed by the human eye.
  • the position of the third side surface 113 is related to the lower edge of the enlarged image 130 observed by the human eye, and the position of the fourth side surface 114 is related to the upper edge of the enlarged image 130 observed by the human eye, thereby affecting the vertical field of view of the human eye at the corresponding observation point S.
  • a first notch 115 is formed at the connection between the third side surface 113 and the first side surface 111, that is, a first notch 115 is formed at the lower right corner corresponding to the human eye (left eye) observation area.
  • the position of the optical element 120 corresponding to the first notch 115 can also be further cut into a special shape.
  • the occlusion area corresponding to the nose between the two eyes of the human body is also located at the lower right corner position corresponding to the human eye (left eye) observation area.
  • the invalid display area can be effectively removed, which can not only further reduce the size of the display screen 110, reduce the overall weight of the display device 10, and improve the effective utilization rate of the display screen 110, but also avoid a significant impact on the user's immersive experience.
  • the first notch 115 can be formed by cutting the connection between the third side surface 113 and the first side surface 111 at 45 degrees, that is, the connection surface formed by the first notch 115 is 145 degrees to the first side surface 111 and the third side surface 113.
  • the cutting angle of the first notch 115 can be designed and adjusted according to the actual occlusion angle of the occlusion area corresponding to the nose between the eyes of the human body to ensure that the user has a better immersive experience.
  • the optical element 120 has a third profile 123 and a fourth profile 124 that are relatively arranged along the second direction Y, the third profile 123 is connected between the first profile 121 and the second profile 122, and the fourth profile 124 is connected between the first profile 121 and the second profile 122, that is, the third profile 123 corresponds to the third side surface 113 of the display screen 110, and the fourth profile 124 corresponds to the fourth side surface 114 of the display screen 110.
  • the position between the third side surface 113 and the third profile 123 is related to the lower edge of the magnified image 130 observed by the human eyes
  • the position between the fourth side surface 114 and the fourth profile 124 is related to the upper edge of the magnified image 130 observed by the human eyes, thereby affecting the vertical field of view ( ⁇ /2) of the human eyes at the corresponding observation point S, thereby affecting the effect of the immersive experience.
  • the overall vertical field of view angle of the human eye is smaller than the horizontal field of view angle, that is, the entire observation field range of the human eye is elliptical, that is, the upper and lower sides of the optical element 120 and/or the display screen 110 can be cut into special shapes to maximize the utilization of the optical element 120 and/or the display screen 110.
  • the minimum value of the distance between the third contour 123 and the main optical axis O of the optical element 120 is less than the minimum value of the distance between the second contour 122 and the main optical axis O of the optical element 120. That is, the lower side of the optical element 120 is cut into a special shape and forms the third contour 123 (the third contour 123 after the special shape cutting is located in the dotted circle a in FIG. 4 and FIG. 5 ), so that the size of the optical element 120 can be further reduced when the optical machine 100 has a sufficient vertical field of view, thereby reducing the overall weight of the display device 10 and improving the user experience.
  • the third side surface 113 of the display screen 110 that is, the lower side of the display screen 110, can also be cut (as shown in Figures 4 and 5, the third side surface 113 after the special-shaped cutting is at least partially located in the dotted circle b) to reduce the width of the upper and lower sides of the display screen 110, so that when the optical machine 100 has a sufficient vertical field of view, the size of the display screen 110 can be further reduced, thereby improving the effective utilization rate of the display screen 110, reducing the overall weight of the display device 10, and improving the user experience.
  • the minimum value of the distance between the fourth contour 124 and the main optical axis O of the optical element 120 is less than the minimum value of the distance between the second contour 122 and the main optical axis O of the optical element 120. That is, the upper side of the optical element 120 is cut into a special shape and forms the fourth contour 124 (as shown in FIG. 4 and FIG. 5 , the fourth contour 124 after the special shape cutting is located in the dotted circle a), so that the size of the optical element 120 can be further reduced when the optical machine 100 has a sufficient vertical field of view, thereby reducing the overall weight of the display device 10 and improving the user experience.
  • the fourth side surface 114 of the display screen 110 that is, the upper side of the display screen 110
  • the minimum value of the distance between the third contour 123 and the main optical axis O of the optical element 120 is smaller than the minimum value of the distance between the second contour 122 and the main optical axis O of the optical element 120, and at the same time, the minimum value of the distance between the fourth contour 124 and the main optical axis O of the optical element 120 is smaller than the minimum value of the distance between the second contour 122 and the main optical axis O of the optical element 120. That is, the upper and lower sides of the optical element 120 are both cut into special shapes, so that the size of the optical element 120 can be further reduced when the optical machine 100 has a sufficient vertical field of view, thereby reducing the overall weight of the display device 10 and improving the user experience.
  • the optical machine 100 has a lens barrel, and the display screen 110 and the optical element 120 are both installed in the lens barrel.
  • the size of the lens barrel used to install the display screen 110 and the optical element 120 can also be reduced, thereby reducing the size of the entire optical machine 100, so that a smaller size of the optical machine 100 can be used under the same horizontal field of view angle, that is, a larger horizontal field of view angle can be obtained under the same size of the optical machine 100, thereby improving the user's immersive experience.
  • the size relationship between the distance between the third contour 123 and the main optical axis O of the optical element 120 and the distance between the fourth contour 124 and the main optical axis O of the optical element 120 that is, the specific shapes of the third contour 123 and the fourth contour 124 can be designed and adjusted according to the actual requirements of the vertical field of view of the optical machine 100, as long as the user has a good immersive experience, and no special restrictions are made here.
  • a second notch 116 is formed at the connection between the fourth side surface 114 and the first side surface 111, that is, a second notch 116 is formed at the upper right corner corresponding to the human eye (left eye) observation area, and the area corresponds to the inner side of the human eye (left eye) observation area close to the nose area.
  • the position of the optical element 120 corresponding to the second notch 116 can also be further cut into a special shape.
  • the second notch 116 at the upper right corner of the display screen 110 and the optical element 120, it will not affect the overall horizontal and vertical field of view angles of the optical machine 100, and can further reduce the size of the display screen 110 and the optical element 120, thereby improving the effective utilization rate of the display screen 110 and reducing the overall weight of the display device 10.
  • a third notch 117 is formed at the connection between the fourth side surface 114 and the second side surface 112, that is, a third notch 117 is formed at the lower left corner corresponding to the human eye (left eye) observation area. Since this area corresponds to the outside of the human eye (left eye) observation area, in order to avoid affecting the overall horizontal viewing angle, the third notch 117 after special-shaped cutting is still located outside the dotted circle b.
  • the position of the optical element 120 corresponding to the third notch 117 can also be further special-shaped cut to further reduce the size of the display screen 110 and the optical element 120, thereby improving the effective utilization rate of the display screen 110 and reducing the overall weight of the display device 10.
  • a fourth notch 118 is formed at the connection between the third side surface 113 and the second side surface 112, that is, a fourth notch 118 is formed at the upper left corner corresponding to the human eye (left eye) observation area. Since this area corresponds to the outside of the human eye (left eye) observation area, in order to avoid affecting the overall horizontal viewing angle, the fourth notch 118 after special-shaped cutting is still located outside the dotted circle b.
  • the position of the optical element 120 corresponding to the fourth notch 118 can also be further special-shaped cut to further reduce the size of the display screen 110 and the optical element 120, thereby improving the effective utilization rate of the display screen 110 and reducing the overall weight of the display device 10.
  • connection points between the fourth side surface 114 and the first side surface 111, the connection points between the fourth side surface 114 and the second side surface 112, and the connection points between the third side surface 113 and the second side surface 112 are formed with notches, that is, two or three of the upper right corner, lower left corner, and upper left corner of the display screen 110 are formed with notches.
  • the cross section of the display side of the display screen 110 can be a regular octagon as a whole.
  • the position and specific shape of the notch on the display screen 110 can be designed and adjusted accordingly according to the overall field of view requirements of the optical machine 100. It is only necessary to ensure the user's immersive experience requirements while reducing the size of the display screen 110 and the corresponding optical element 120. No special restrictions are made here.
  • the first contour 121, the second contour 122, the third contour 123 and the fourth contour 124 can be arc-shaped, and the curvatures of the first contour 121, the second contour 122, the third contour 123 and the fourth contour 124 are different. That is, the first contour 121, the third contour 123 and the fourth contour 124 can be cut into a special shape with the orthographic projection of the corresponding first side surface 111, the third side surface 113 and the fourth side surface 114 on the optical element 120 as a chord, so as to reduce the size of the optical element 120 while ensuring the effective utilization rate of the display screen 110.
  • first contour 121, the second contour 122, the third contour 123 and the fourth contour 124 can also reduce the corresponding stress concentration generated during the special-shaped cutting process, thereby ensuring the optical stability and structural stability of the optical element 120.
  • the curvatures of the first contour 121, the second contour 122, the third contour 123 and the fourth contour 124 can be designed according to the design requirements of the horizontal viewing angle and the vertical viewing angle and the shape of the display screen 110 after special-shaped cutting. It is only necessary to ensure that the arc design of the first contour 121, the second contour 122, the third contour 123 and the fourth contour 124 can meet the viewing angle requirements.
  • the first contour 121, the third contour 123, and the fourth contour 124 are straight lines
  • the second contour 122 is an arc
  • the center of curvature of the second contour 122 is located on the main optical axis O of the optical element 120. That is, the center of the arc projection of the second contour 122 in the direction of the main optical axis O is on the main optical axis O
  • the projections of the first contour 121, the third contour 123, and the fourth contour 124 in the direction of the main optical axis O are straight lines corresponding to the first side surface 111, the third side surface 113, and the fourth side surface 114.
  • This special-shaped cutting method can further reduce the size of the optical element 120, so as to reduce the overall weight of the display device 10.
  • the first contour 121 and the third contour 123 are connected by an arc 125
  • the first contour 121 and the fourth contour 124 are connected by an arc 125
  • the first contour 121 and the third contour 123 are connected by an arc 125 for smooth transition
  • the first contour 121 and the fourth contour 124 are connected by an arc 125 for smooth transition, so as to avoid stress concentration at the connection between the first contour 121 and the third contour 123 and at the connection between the first contour 121 and the fourth contour 124 during the special-shaped cutting process, thereby ensuring the optical stability and structural stability of the optical element 120.
  • first contour 121 the second contour 122, the third contour 123 and the fourth contour 124 can be designed and adjusted according to the shape of the display screen 110 and the field of view angle requirements of the optical machine 100, and there is no special limitation here.
  • the orthographic projection of the display screen 110 on the optical element 120 is located within the optical element 120, that is, the area enclosed by the first contour 121, the second contour 122, the third contour 123, and the fourth contour 124 of the optical element 120 surrounds the projection of the display screen 110 on the optical element 120.
  • This structural design helps to maximize the utilization of the display screen 110 under the condition of the same field of view.
  • the minimum value of the distance between the fourth contour 124 and the main optical axis O of the optical element 120 is smaller than the minimum value of the distance between the third contour 123 and the main optical axis O of the optical element 120.
  • the visual angle of the upper side (corresponding to the fourth contour 124) of the human eye is smaller than the visual angle of the lower side (corresponding to the third contour 123).
  • the size of the optical element 120 can be further reduced while ensuring a sufficient vertical field of view angle, thereby reducing the overall weight of the display device 10.
  • the optical element 120 has an optical center Q, and the main optical axis O of the optical element 120 passes through the optical center Q.
  • the optical centers Q of the optical elements 120 of the two optical machines 100 form a first line L
  • the geometric centers P of the display screens 110 of the two optical machines 100 form a second line N.
  • the first line L is parallel to the second line N, that is, the special-shaped cutting methods of the two optical machines 100 are the same and are symmetrically arranged.
  • the main optical axis O of the optical element 120 passes through the second connecting line N, that is, the main optical axes O of the two optical elements 120 and the second connecting line N are located in the same plane, and the upper and lower sides of the display screen 110 are not cut into special shapes or are cut into symmetrical special shapes, that is, the third contour 123 and the fourth contour 124 are symmetrically arranged.
  • This arrangement can simplify the special-shaped cutting method of the display screen 110 and also help to improve the aesthetics of the display screen 110.
  • the principal optical axis O of the optical element 120 is at an angle to the second line N and does not intersect, that is, the second line N is parallel to the plane where the principal optical axes O of the two optical elements 120 are located, and only one side of the upper and lower sides of the display screen 110 is cut with a special shape or both sides are cut with asymmetric special shapes, that is, the third contour 123 and the fourth contour 124 are set asymmetrically.
  • This setting method enables the third contour 123 and the fourth contour 124 to be optimized according to the visual characteristics of the human body, so as to maximize the utilization of the display screen 110 and the optical element 120 while meeting the viewing angle design requirements.
  • the sum of the field of view angles of the observation points S corresponding to the two optical machines 100 is greater than or equal to 120°. That is, after the display screen of a single display screen 110 is enlarged by the corresponding optical element 120, the angle between the outer edge of the enlarged image 130 and the line connecting the observation point S relative to the main optical axis O of the optical element 120 is greater than or equal to 60°; after the display screens of the two display screens 110 are enlarged by the corresponding optical element 120, the sum of the angles between the outer edge of the enlarged image 130 and the line connecting the observation point S relative to the main optical axis O of the optical element 120 is greater than or equal to 120°, so that the user has a better immersive experience.
  • the specific size of the sum of the field of view angles can be adjusted accordingly according to actual usage requirements, as long as the user's immersive experience requirements are met, and no special restrictions are made here.
  • the combined image angle of the field of view angles of the observation points S corresponding to the two optical machines 100 is greater than or equal to 80°. That is, after the display screen of a single display screen 110 is enlarged by the corresponding optical element 120, the angle between the inner edge of the enlarged image 130 and the line connecting the observation point S relative to the main optical axis O of the optical element 120 is greater than or equal to 40°; after the display screens of the two display screens 110 are enlarged by the corresponding optical element 120, the sum of the angles between the inner edge of the enlarged image 130 and the line connecting the observation point S relative to the main optical axis O of the optical element 120 is greater than or equal to 80°.
  • the size of the combined image angle represents the size of the stereoscopic visual area. By setting the combined image angle to be greater than or equal to 80°, the user can have a better immersive experience.
  • the specific size of the combined image angle can be adjusted accordingly according to actual usage requirements, as long as the user's immersive experience requirements are met, and no special restrictions are made here.
  • the field of view angle of the observation point S corresponding to the two optical machines 100 is greater than or equal to 90°. That is, after the display screen of a single display screen 110 is enlarged by the corresponding optical element 120, the angle between the upper or lower edge of the enlarged image 130 and the line connecting the observation point S relative to the main optical axis O of the optical element 120 is greater than or equal to 45°; after the display screens of the two display screens 110 are enlarged by the corresponding optical element 120, the sum of the angles between the upper or lower edge of the enlarged image 130 and the line connecting the observation point S relative to the main optical axis O of the optical element 120 is greater than or equal to 90°, so that the user has a better immersive experience.
  • the sum of the field of view angles of the observation points S corresponding to the two optical machines 100 in the observation direction along the second direction Y can be set to 90°, 95° or 100°, etc.
  • the specific size of the sum of the field of view angles can be adjusted accordingly according to actual usage requirements, as long as the user's immersive experience needs are met, and no special restrictions are made here.

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Abstract

一种显示装置（10），包括两个光机（100），每个光机包括显示屏（110）和光学元件（120），显示屏（110）具有第一侧边面（111）和第二侧边面（112），光学元件（120）具有第一轮廓（121）和第二轮廓（122）；第一轮廓（121）与光学元件（120）的光轴的距离的最小值小于第二轮廓（122）与光学元件（120）的光轴的距离的最小值。这种显示装置通过将光学元件内侧设置为异形结构，能够减小光学元件的尺寸。

Description

显示装置 技术领域
本申请涉及显示领域，具体涉及一种显示装置。
 背景技术
随着人们对消费类电子产品显示要求的不断提高，虚拟/增强现实显示技术受到越来越多人的关注。虚拟现实（Virtual Reality，VR）有着较好的沉浸式体验，越来越受到消费者的青睐，由此可见虚拟现实的核心要义在于沉浸感，而成就沉浸感的关键，则是全景，视场角（Field of View，FOV）就代表着所看到的全景角度，是体现光学核心技术的标志性参数。对于目前面世的VR产品，限制VR视野的因素是光机镜头，为了得到一个更好的视野(更大的FOV)，一般采用缩短观察点（眼睛）与透镜间的距离或者增加镜头大小的方式，但眼睛与透镜间距离的缩短空间有限，过度减小会影响佩戴舒适性，镜头过大则会导致产品重量的增加，影响用户的视觉体验。
 发明概述
本申请实施例提供一种显示装置，可以解决现有显示装置无法在实现较大视场角的同时减小显示装置重量的问题。
本申请实施例提供一种显示装置，包括两个沿第一方向并列设置的光机，每个光机包括：
显示屏，具有沿所述第一方向相对设置的第一侧边面和第二侧边面，所述第一侧边面靠近另一个所述光机；
光学元件，位于所述显示屏的显示侧，所述光学元件用于对所述显示屏的显示画面进行处理并传输至对应观察点；所述光学元件具有沿所述第一方向相对设置的第一轮廓和第二轮廓，所述第一轮廓靠近另一个所述光机；
其中，所述光学元件的主光轴穿过所述显示屏，并位于所述显示屏的几何中心靠近另一个所述光机的一侧；所述第一轮廓与所述光学元件的主光轴的距离的最小值小于所述第二轮廓与所述光学元件的主光轴的距离的最小值。
可选的，在本申请的一些实施例中，所述第一侧边面与所述光学元件的主光轴的距离的最小值小于所述第二侧边面与所述光学元件的主光轴的距离的最小值。
可选的，在本申请的一些实施例中，所述显示屏沿第二方向具有相对的第三侧边面和第四侧边面，所述第三侧边面连接在所述第一侧边面和所述第二侧边面之间，所述第四侧边面连接在所述第一侧边面和所述第二侧边面之间，所述第二方向与所述第一方向呈夹角；所述第三侧边面与所述第一侧边面的连接处形成有第一缺口。
可选的，在本申请的一些实施例中，所述光学元件具有沿所述第二方向相对设置的第三轮廓和第四轮廓；所述第三轮廓连接在所述第一轮廓和所述第二轮廓之间，所述第四轮廓连接在所述第一轮廓和所述第二轮廓之间；所述第三轮廓与所述光学元件的主光轴的距离的最小值小于所述第二轮廓与所述光学元件的主光轴的距离的最小值。
可选的，在本申请的一些实施例中，所述光学元件具有沿所述第二方向相对设置的第三轮廓和第四轮廓；所述第三轮廓连接在所述第一轮廓和所述第二轮廓之间，所述第四轮廓连接在所述第一轮廓和所述第二轮廓之间；所述第四轮廓与所述光学元件的主光轴的距离的最小值小于所述第二轮廓与所述光学元件的主光轴的距离的最小值。
可选的，在本申请的一些实施例中，所述第四侧边面与所述第一侧边面的连接处形成有第二缺口。
可选的，在本申请的一些实施例中，所述第四侧边面与所述第二侧边面的连接处形成有第三缺口。
可选的，在本申请的一些实施例中，所述第三侧边面与所述第二侧边面的连接处形成有第四缺口。
可选的，在本申请的一些实施例中，所述第一缺口形成的连接面与所述第一侧边面呈145°。
可选的，在本申请的一些实施例中，所述第一缺口形成的连接面与所述第三侧边面呈145°。
可选的，在本申请的一些实施例中，所述显示屏的横截面呈正八边形。
可选的，在本申请的一些实施例中，所述第一轮廓、所述第二轮廓、所述第三轮廓和所述第四轮廓为弧形，且所述第一轮廓、所述第二轮廓、所述第三轮廓和所述第四轮廓的曲率各不相同。
可选的，在本申请的一些实施例中，所述第一轮廓、所述第三轮廓和所述第四轮廓为直线，所述第二轮廓为弧形，且所述第二轮廓的曲率中心位于所述光学元件的主光轴上；所述第一轮廓与所述第三轮廓之间为圆弧连接，所述第一轮廓与所述第四轮廓之间为圆弧连接。
可选的，在本申请的一些实施例中，在沿所述光学元件主光轴的方向上，所述显示屏在所述光学元件上的正投影位于所述光学元件内。
可选的，在本申请的一些实施例中，所述第四轮廓与所述光学元件的主光轴的距离的最小值小于所述第三轮廓与所述光学元件的主光轴的距离的最小值。
可选的，在本申请的一些实施例中，所述光学元件具有光学中心，所述光学元件的主光轴穿过所述光学中心；两个所述光机的光学元件的光学中心形成第一连线，两个所述光机的显示屏的几何中心形成第二连线，所述第一连线与所述第二连线平行；所述光学元件的主光轴穿过所述第二连线。
可选的，在本申请的一些实施例中，所述光学元件具有光学中心，所述光学元件的主光轴穿过所述光学中心；两个所述光机的光学元件的光学中心形成第一连线，两个所述光机的显示屏的几何中心形成第二连线，所述第一连线与所述第二连线平行；所述光学元件的主光轴与所述第二连线呈夹角且不相交。
可选的，在本申请的一些实施例中，在沿所述第一方向的观察方向上，两个所述光机对应的观察点的视场角之和大于或等于120°。
可选的，在本申请的一些实施例中，在沿所述第一方向的观察方向上，两个所述光机对应的观察点的视场角的合像角度大于或等于80°。
可选的，在本申请的一些实施例中，在沿所述第二方向的观察方向上，两个所述光机对应的观察点的视场角大于或等于90°。
有益效果
本申请实施例中显示装置包括两个沿第一方向并列设置的光机，每个光机包括显示屏和光学元件，显示屏具有沿第一方向相对设置的第一侧边面和第二侧边面，第一侧边面靠近另一个光机，光学元件位于显示屏的显示侧，光学元件用于对显示屏的显示画面进行处理并传输至对应观察点；光学元件具有沿第一方向相对设置的第一轮廓和第二轮廓，第一轮廓靠近另一个光机；其中，光学元件的主光轴穿过显示屏，并位于显示屏的几何中心靠近另一个光机的一侧；第一轮廓与光学元件的主光轴的距离的最小值小于第二轮廓与光学元件的主光轴的距离的最小值。本申请通过将光学元件的第一轮廓与主光轴的距离的最小值设置为小于第二轮廓与主光轴的距离的最小值，使得光学元件内侧为异形结构，即在观察点与光学元件距离相同且同等水平视场角的情况下，能够减小光学元件的尺寸，进而减小显示装置重量，改善用户的使用体验。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有的一种显示装置的结构示意图；
图2是现有的一种光机的俯视结构示意图；
图3是本申请实施例提供的一种显示装置的结构示意图；
图4是本申请实施例提供的一种光机的俯视结构示意图；
图5是本申请实施例提供的另一种光机的俯视结构示意图。
附图标记说明：
10，显示装置；
100，光机；110，110a，显示屏；111，第一侧边面；112，第二侧边面；113，第三侧边面；114，第四侧边面；115，第一缺口，116，第二缺口；117，第三缺口；118，第四缺口；120，120a，光学元件；121，第一轮廓；122，第二轮廓；123，第三轮廓；124，第四轮廓；125，圆弧；130，放大图像；
X，第一方向；Y，第二方向；O，O1，主光轴；P，P1，几何中心；Q，Q1，光学中心；S，观察点；L，第一连线；N，第二连线。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。在本申请中，在未作相反说明的情况下，使用的方位词如“上”和“下”通常是指装置实际使用或工作状态下的上和下，具体为附图中的图面方向；而“内”和“外”则是针对装置的轮廓而言的。
本申请实施例提供一种显示装置，以下进行详细说明。需要说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
如图3所示，显示装置10包括两个沿第一方向X并列设置的光机100，显示装置10在投入使用时，人眼分别与两个光机100对应，人眼所在位置则对应光机100的观察点S，第一方向X即为人眼分布方向，也即为水平方向，第一方向X箭头所指的方向即为左眼和右眼的分布方向。
其中，每个光机100包括显示屏110和光学元件120，光学元件120能够由一个或多个镜片组成。光学元件120位于显示屏110的显示侧，显示屏110用于显示画面，光学元件120则用于对显示屏110的显示画面进行处理并传输至对应的观察点S。也就是说，显示装置10使用时，显示屏110的显示画面通过光学元件120的折射或反射在远处产生放大图像130，然后被人眼所接收，人眼观看该放大图像130而实现沉浸视觉。
如图4和图5所示（左眼对应的光机结构），显示屏110具有沿第一方向X相对设置的第一侧边面111和第二侧边面112，第一侧边面111靠近另一个光机100，即第一侧边面111为人眼观察时靠近鼻子侧的内侧，第二侧边面112为人眼观察时的外侧。对应的，光学元件120具有沿第一方向X相对设置的第一轮廓121和第二轮廓122，第一轮廓121靠近另一个光机100。对于人眼而言，在进行观察时，第一侧边面111与第一轮廓121之间的位置关系到人眼所观察到的放大图像130的内侧边缘，第二侧边面112与第二轮廓122之间的位置则关系到人眼所观察到的放大图像130的外侧边缘，从而影响到人眼在对应观察点S的水平视场角，进而影响沉浸体验的效果。
需要说明的是，本申请实施例中所说的轮廓为光学元件120在显示屏110所在平面上的正投影的外轮廓，而第一轮廓121则与显示屏110的第一侧边面111相对应，第二轮廓122则与显示屏110的第二侧边面112相对应，即第一轮廓121为人眼观察时靠近鼻子侧的内侧，第二轮廓122为人眼观察时的外侧。
其中，光学元件120的主光轴O穿过显示屏110，并位于显示屏110的几何中心P靠近另一个光机100的一侧。需要说明的是，对于光学元件120而言，其主光轴O或光学中心Q在光学元件120形成之后是固定的，与后续光学元件120是否切割为其他形状没有关系，而显示屏110的几何中心P会随着显示屏110形状的改变而改变。
如图1和图2所示，当显示屏110a和光学元件120a均为规则图形且沿光学元件120a的主光轴O 1进行组装时，显示屏110a的几何中心P 1位于光学元件120a的主光轴O 1上，即光学元件120a的主光轴O 1穿过光学元件120a的光学中心Q 1和显示屏110a的几何中心P 1，其中，虚线圆形b为异形切割前单个光机100的理论视角范围。如图4和图5所示，在同等水平视场角的情况下，若光学元件120的主光轴O位于显示屏110的几何中心P靠近另一个显示屏110的一侧，即显示屏110的几何中心P向第二侧边面112发生了偏移，则说明显示屏110相对光学元件120在第一方向X上发生了错位，或者对显示屏110的第一侧边面111进行了切割，其中，虚线圆形a为异形切割前光学元件120的外轮廓。
对应的，第一轮廓121与光学元件120的主光轴O的距离的最小值小于第二轮廓122与光学元件120的主光轴O的距离的最小值，即光学元件120的内侧进行了异形切割并形成了第一轮廓121（如图4和图5中异形切割后的第一轮廓121位于虚线圆形a内），使得在水平视场角保持不变的情况下，光学元件120的尺寸能够减小，进而减小显示装置10的整体重量，改善用户的使用体验。
需要说明的是，对于单眼而言，水平视场角（α/2）是指单个显示屏110的显示画面经光学元件120放大后形成的放大图像130在水平方向上的两侧边缘与人眼之间连线的夹角，而对于双眼而言，整体的水平视场角是指两个显示屏110的显示画面经对应光学元件120放大后，形成的放大图像130的外侧边缘与人眼的连线相对光学元件120主光轴O的夹角之和。
此外，根据人眼的视觉特点，人体双眼之间鼻子所对应的区域会对实际的观察视角产生一定的遮挡，而该遮挡部分对应的是放大图像130的内侧区域，因此在对光学元件120内侧进行异形切割时，虽然会使单眼内侧的视场角减小，但双眼整体的水平视场角保持不变，不会对整体的沉浸视觉产生较大的影响，同时还能减轻显示装置10的整体重量。也就是说，在对光学元件120内侧进行异形切割时，其切割尺寸能够根据鼻子所对应的区域对观察视角的遮挡情况进行调整，以避免在减小光学元件120尺寸的同时对用户的沉浸体验产生较大影响。
本申请实施例中显示装置10包括两个沿第一方向X并列设置的光机100，每个光机100包括显示屏110和光学元件120，显示屏110具有沿第一方向X相对设置的第一侧边面111和第二侧边面112，第一侧边面111靠近另一个光机100，光学元件120位于显示屏110的显示侧，光学元件120用于对显示屏110的显示画面进行处理并传输至对应观察点S；光学元件120具有沿第一方向X相对设置的第一轮廓121和第二轮廓122；其中，光学元件120的主光轴O穿过显示屏110，并位于显示屏110的几何中心P靠近另一个光机100的一侧；第一轮廓121与光学元件120的主光轴O的距离的最小值小于第二轮廓122与光学元件120的主光轴O的距离的最小值。本申请通过将光学元件120的第一轮廓121与主光轴O的距离的最小值设置为小于第二轮廓122与主光轴O的距离的最小值，使得光学元件120内侧切割为异形结构，即在观察点S与光学元件120距离相同且同等水平视场角的情况下，能够减小光学元件120的尺寸，进而减小显示装置10重量，改善用户的使用体验；反之，在同等光学元件120所对应的口径的情况下，能够实现更大的水平视场角，以改善用户的沉浸视觉体验。
可选的，如图4和图5所示，显示屏110第一侧边面111与光学元件120的主光轴O的距离的最小值小于第二侧边面112与光学元件120的主光轴O的距离的最小值。也就是说，显示屏110的内侧也能够进行异形切割（如图4和图5中异形切割后的第一侧边面111至少部分位于虚线圆形b内），以在保持整体水平视场角不变的情况下，减小显示屏110的尺寸，进而减小显示装置10重量，改善用户的使用体验，同时还能够提高显示屏110的有效利用率。
需要说明的是，由于整体的水平视场角与两个显示屏110的显示画面经对应光学元件120放大后形成的放大图像130的外侧边缘有关，为保证异形切割后的显示屏110和光学元件120形成的放大图像130的外侧边缘保持不变（如图4和图5中第二侧边面112始终位于虚线圆形b外），本申请实施例主要通过对显示屏110和光学元件120的内侧进行异形处理，以在保持整体水平视场角不变的情况下，实现光学元件120与显示屏110尺寸的减小。
可选的，如图4所示，显示屏110沿第二方向Y具有相对的第三侧边面113和第四侧边面114，第三侧边面113连接在第一侧边面111和第二侧边面112之间，第四侧边面114连接在第一侧边面111和第二侧边面112之间，第二方向Y与第一方向X呈夹角。需要说明的是，第三侧边面113为人眼观察时的下侧，第四侧边面114为人眼观察时的上侧，第二方向Y则为人眼观察的竖直方向。对于人眼而言，在进行观察时，第三侧边面113的位置关系到人眼所观察到的放大图像130的下侧边缘，第四侧边面114的位置则关系到人眼所观察到的放大图像130的上侧边缘，从而影响到人眼在对应观察点S的竖直视场角。
其中，第三侧边面113与第一侧边面111的连接处形成有第一缺口115，即人眼（左眼）观察区域对应的右下角形成有第一缺口115。对应的，光学元件120对应第一缺口115的位置也能进一步进行异形切割。需要说明的是，人体双眼之间鼻子所对应的遮挡区域也位于人眼（左眼）观察区域对应的右下角位置，通过在此位置形成第一缺口115，能够有效去除无效显示区域，既能进一步减小显示屏110的尺寸，降低显示装置10的整体重量，提高显示屏110的有效利用率，同时还能避免对用户的沉浸体验产生较大影响。
在一些实施例中，第一缺口115能够由第三侧边面113与第一侧边面111的连接处呈45°切割而形成，即第一缺口115形成的连接面与第一侧边面111和第三侧边面113均呈145°。其中，第一缺口115的切割角度能够根据人体双眼之间鼻子所对应的遮挡区域的实际遮挡角度进行设计调整，以确保用户具有较好的沉浸体验。
可选的，光学元件120具有沿第二方向Y相对设置的第三轮廓123和第四轮廓124，第三轮廓123连接在第一轮廓121和第二轮廓122之间，第四轮廓124连接在第一轮廓121和第二轮廓122之间，即第三轮廓123与显示屏110的第三侧边面113对应，第四轮廓124与显示屏110的第四侧边面114对应。对于人眼而言，在进行观察时，第三侧边面113与第三轮廓123之间的位置关系到人眼所观察到的放大图像130的下侧边缘，第四侧边面114与第四轮廓124之间的位置则关系到人眼所观察到的放大图像130的上侧边缘，从而影响到人眼在对应观察点S的竖直视场角（β/2），进而影响沉浸体验的效果。
需要说明的是，根据人眼视觉特点，在实际观察过程中，人眼整体的竖直视场角小于水平视场角，即人眼的整个观察视场范围呈类椭圆形，也即能够对光学元件120和/或显示屏110的上下两侧进行异形切割，以实现对光学元件120和/或显示屏110的最大化利用。
在一些实施例中，第三轮廓123与光学元件120的主光轴O的距离的最小值小于第二轮廓122与光学元件120的主光轴O的距离的最小值。即光学元件120的下侧进行了异形切割并形成了第三轮廓123（如图4和图5中异形切割后的第三轮廓123位于虚线圆形a内），使得光机100在具有足够的竖直视场角的情况下，光学元件120的尺寸能够进一步减小，进而减小显示装置10的整体重量，改善用户的使用体验。
对应的，显示屏110的第三侧边面113即显示屏110的下侧也能够进行切割（如图4和图5中异形切割后的第三侧边面113至少部分位于虚线圆形b内），以减小显示屏110上下侧的宽度，使得光机100在具有足够的竖直视场角的情况下，显示屏110的尺寸能够进一步减小，进而提高显示屏110的有效利用率，减小显示装置10的整体重量，改善用户的使用体验。
在另一些实施例中，第四轮廓124与光学元件120的主光轴O的距离的最小值小于第二轮廓122与光学元件120的主光轴O的距离的最小值。即光学元件120的上侧进行了异形切割并形成了第四轮廓124（如图4和图5中异形切割后的第四轮廓124位于虚线圆形a内），使得光机100在具有足够的竖直视场角的情况下，光学元件120的尺寸能够进一步减小，进而减小显示装置10的整体重量，改善用户的使用体验。
对应的，显示屏110的第四侧边面114即显示屏110的上侧也能够进行切割（如图4和图5中异形切割后的第四侧边面114至少部分位于虚线圆形b内），以减小显示屏110上下侧的宽度，使得光机100在具有足够的竖直视场角的情况下，显示屏110的尺寸能够进一步减小，进而提高显示屏110的有效利用率，减小显示装置10的整体重量，改善用户的使用体验。
在又一些实施例中，第三轮廓123与光学元件120的主光轴O的距离的最小值小于第二轮廓122与光学元件120的主光轴O的距离的最小值，同时，第四轮廓124与光学元件120的主光轴O的距离的最小值小于第二轮廓122与光学元件120的主光轴O的距离的最小值。即光学元件120的上下两侧均进行了异形切割，使得光机100在具有足够的竖直视场角的情况下，光学元件120的尺寸能够进一步减小，进而减小显示装置10的整体重量，改善用户的使用体验。
此外，光机100具有镜筒，显示屏110和光学元件120均安装在镜筒内，当光学元件120的第三轮廓123与第四轮廓124中的至少一个，以及第一轮廓121进行异形切割，同时显示屏110的第三侧边面113与第四侧边面114中的至少一个，以及第一侧边面111进行异形切割时，用于安装显示屏110和光学元件120的镜筒的尺寸也能够减小，进而减小整个光机100的尺寸，使得在同等水平视场角的情况下能够采用更小尺寸的光机100，也即在同等光机100尺寸的情况下能够获得更大的水平视场角，进而改善用户的沉浸体验。
需要说明的是，第三轮廓123与光学元件120的主光轴O的距离和第四轮廓124与光学元件120的主光轴O的距离之间的大小关系，即第三轮廓123与第四轮廓124的具体形状能够根据光机100竖直视场角的实际需求进行设计调整，只需保证用户具有较好的沉浸体验即可，此处并不做特殊限制。
可选的，如图5所示，第四侧边面114与第一侧边面111的连接处形成有第二缺口116，即人眼（左眼）观察区域对应的右上角形成有第二缺口116，且该区域对应人眼（左眼）观察区域靠近鼻子所在区域的内侧。对应的，光学元件120对应第二缺口116的位置也能进一步进行异形切割。通过在显示屏110和光学元件120的右上角形成第二缺口116，既不会对光机100整体的水平视场角和竖直视场角产生影响，还能进一步减小显示屏110和光学元件120的尺寸，从而提高显示屏110的有效利用率，降低显示装置10的整体重量。
在一些实施例中，如图3所示，第四侧边面114与第二侧边面112的连接处形成有第三缺口117，即人眼（左眼）观察区域对应的左下角形成有第三缺口117，由于该区域对应人眼（左眼）观察区域的外侧，为避免对整体的水平视角产生影响，异形切割后的第三缺口117仍然位于虚线圆形b外。对应的，光学元件120对应第三缺口117的位置也能进一步进行异形切割，以进一步减小显示屏110和光学元件120的尺寸，从而提高显示屏110的有效利用率，降低显示装置10的整体重量。
在另一些实施例中，如图3所示，第三侧边面113与第二侧边面112的连接处形成有第四缺口118，即人眼（左眼）观察区域对应的左上角形成有第四缺口118，由于该区域对应人眼（左眼）观察区域的外侧，为避免对整体的水平视角产生影响，异形切割后的第四缺口118仍然位于虚线圆形b外。对应的，光学元件120对应第四缺口118的位置也能进一步进行异形切割，以进一步减小显示屏110和光学元件120的尺寸，从而提高显示屏110的有效利用率，降低显示装置10的整体重量。
在又一些实施例中，第四侧边面114与第一侧边面111的连接处、第四侧边面114与第二侧边面112的连接处以及第三侧边面113与第二侧边面112的连接处中的两个或者三个均形成有缺口，即显示屏110的右上角、左下角和左上角中的两个或三个均形成有缺口。其中，当显示屏110的右下角、右上角、左下角和左上角均形成有缺口时，显示屏110的显示侧的横截面整体能够呈正八边形。
需要说明的是，显示屏110上缺口形成的位置及具体形状能够根据光机100整体的视场角需求进行相应设计调整，只需保证用户沉浸体验需求的同时，减小显示屏110与对应光学元件120的尺寸即可，此处并不做特殊限制。
可选的，如图2所示，第一轮廓121、第二轮廓122、第三轮廓123和第四轮廓124能够为弧形，且第一轮廓121、第二轮廓122、第三轮廓123和第四轮廓124的曲率各不相同。即第一轮廓121、第三轮廓123和第四轮廓124能够以对应的第一侧边面111、第三侧边面113和第四侧边面114在光学元件120上的正投影为弦进行异形切割，以在减小光学元件120尺寸的同时保证显示屏110的有效利用率。此外，将第一轮廓121、第二轮廓122、第三轮廓123和第四轮廓124设置为弧形，还能够减小异形切割过程中对应产生的应力集中，从而保证光学元件120的光学稳定性和结构稳定性。
需要说明的是，第一轮廓121、第二轮廓122、第三轮廓123和第四轮廓124的曲率大小能够根据水平视角和垂直视角的设计需求以及异形切割后的显示屏110的形状进行设计，只需保证第一轮廓121、第二轮廓122、第三轮廓123和第四轮廓124的弧形设计能够满足视角的使用需求即可。
在一些实施例中，如图3所示，第一轮廓121、第三轮廓123和第四轮廓124为直线，第二轮廓122为弧形，且第二轮廓122的曲率中心位于光学元件120的主光轴O上。即第二轮廓122在主光轴O方向上的弧形投影的圆心在主光轴O上，第一轮廓121、第三轮廓123和第四轮廓124在主光轴O方向上的投影则为与第一侧边面111、第三侧边面113和第四侧边面114对应的直线，此种异形切割方式能够进一步减小光学元件120的尺寸，以减小显示装置10整体的重量。
其中，第一轮廓121与第三轮廓123之间为圆弧125连接，第一轮廓121与第四轮廓124之间为圆弧125连接，即第一轮廓121与第三轮廓123之间采用圆弧125平滑过渡，第一轮廓121与第四轮廓124之间采用圆弧125平滑过渡，以避免异形切割过程中第一轮廓121与第三轮廓123连接处，以及第一轮廓121与第四轮廓124连接处产生应力集中，进而保证光学元件120的光学稳定性和结构稳定性。
需要说明的是，第一轮廓121、第二轮廓122、第三轮廓123和第四轮廓124的具体形状能够根据显示屏110的形状以及光机100的视场角需求进行设计调整，此处并不做特殊限制。
可选的，在沿光学元件120主光轴O的方向上，显示屏110在光学元件120上的正投影位于光学元件120内，即光学元件120的第一轮廓121、第二轮廓122、第三轮廓123和第四轮廓124围成的区域对显示屏110在光学元件120上的投影进行了包围。此种结构设计方式有助于实现在相同的视场角的条件下，显示屏110能够实现最大化的利用。
在一些实施例中，第四轮廓124与光学元件120的主光轴O的距离的最小值小于第三轮廓123与光学元件120的主光轴O的距离的最小值。根据人眼视觉特点，在实际观察过程中，人眼上侧（对应第四轮廓124）视角小于下侧（对应第三轮廓123）视角，通过将第四轮廓124与光学元件120的主光轴O的距离的最小值设置为小于第三轮廓123与光学元件120的主光轴O的距离的最小值，在保证足够的竖直视场角度的同时，能够进一步减小光学元件120的尺寸，以减小显示装置10整体的重量。
可选的，光学元件120具有光学中心Q，光学元件120的主光轴O穿过光学中心Q，两个光机100的光学元件120的光学中心Q形成第一连线L，两个光机100的显示屏110的几何中心P形成第二连线N，第一连线L与第二连线N平行，即两个光机100的异形切割方式相同并对称设置。
其中，光学元件120的主光轴O穿过第二连线N，即两个光学元件120的主光轴O与第二连线N位于同一平面，显示屏110的上下两侧未做异形切割或者为对称异形切割，也就是第三轮廓123和第四轮廓124为对称设置，此种设置方式能够简化显示屏110的异形切割方式，也有助于改善显示屏110的美观度。
或者，光学元件120的主光轴O与第二连线N呈夹角且不相交，即第二连线N与两个光学元件120的主光轴O所在的平面平行，显示屏110的上下两侧只有一侧做了异形切割或者两侧为非对称的异形切割，也就是第三轮廓123和第四轮廓124为非对称设置，此种设置方式使得第三轮廓123和第四轮廓124能够根据人体视觉特点进行优化设计，以在满足视角设计需求的同时，实现显示屏110和光学元件120的最大化利用。
在一些实施例中，在沿第一方向X的观察方向上，两个光机100对应的观察点S的视场角之和大于或等于120°。即单个显示屏110的显示画面经对应光学元件120放大后，形成的放大图像130的外侧边缘与观察点S的连线相对光学元件120主光轴O的夹角大于或等于60°；两个显示屏110的显示画面经对应光学元件120放大后，形成的放大图像130的外侧边缘与观察点S的连线相对光学元件120主光轴O的夹角之和则大于或等于120°，以使用户具有较好的沉浸体验。
具体的，在实际制作过程中，能够将两个光机100对应的观察点S在沿第一方向X的观察方向上的视场角之和设置为α=120°、125°或者130°等，其视场角之和的具体大小能够根据实际使用需求进行相应调整，只需满足用户的沉浸体验需求即可，此处并不做特殊限制。
在另一些实施例中，在沿第一方向X的观察方向上，两个光机100对应的观察点S的视场角的合像角度大于或等于80°。即单个显示屏110的显示画面经对应光学元件120放大后，形成的放大图像130的内侧边缘与观察点S的连线相对光学元件120主光轴O的夹角大于或等于40°；两个显示屏110的显示画面经对应光学元件120放大后，形成的放大图像130的内侧边缘与观察点S的连线相对光学元件120主光轴O的夹角之和则大于或等于80°。其中，合像角度的大小则代表着立体视觉区域的大小，通过将合像角度设置为大于或等于80°，能够使用户具有较好的沉浸体验。
具体的，在实际制作过程中，能够将两个光机100对应的观察点S在沿第一方向X的观察方向上的视场角的合像角度设置为β=80°、90°或者100°等，其合像角度的具体大小能够根据实际使用需求进行相应调整，只需满足用户的沉浸体验需求即可，此处并不做特殊限制。
在又一些实施例中，在沿第二方向Y的观察方向上，两个光机100对应的观察点S的视场角大于或等于90°。即单个显示屏110的显示画面经对应光学元件120放大后，形成的放大图像130的上侧或下侧边缘与观察点S的连线相对光学元件120主光轴O的夹角大于或等于45°；两个显示屏110的显示画面经对应光学元件120放大后，形成的放大图像130的上侧或下侧边缘与观察点S的连线相对光学元件120主光轴O的夹角之和则大于或等于90°，以使用户具有较好的沉浸体验。
具体的，在实际制作过程中，能够将两个光机100对应的观察点S在沿第二方向Y的观察方向上的视场角之和设置为90°、95°或者100°等，其视场角之和的具体大小能够根据实际使用需求进行相应调整，只需满足用户的沉浸体验需求即可，此处并不做特殊限制。
以上对本申请实施例所提供的一种显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种显示装置，其中，包括两个沿第一方向并列设置的光机，每个所述光机包括：
    显示屏，具有沿所述第一方向相对设置的第一侧边面和第二侧边面，所述第一侧边面靠近另一个所述光机；
    光学元件，位于所述显示屏的显示侧，所述光学元件用于对所述显示屏的显示画面进行处理并传输至对应观察点；所述光学元件具有沿所述第一方向相对设置的第一轮廓和第二轮廓，所述第一轮廓靠近另一个所述光机；
    其中，所述光学元件的主光轴穿过所述显示屏，并位于所述显示屏的几何中心靠近另一个所述光机的一侧；所述第一轮廓与所述光学元件的主光轴的距离的最小值小于所述第二轮廓与所述光学元件的主光轴的距离的最小值。
  2. 根据权利要求1所述的显示装置，其中，所述第一侧边面与所述光学元件的主光轴的距离的最小值小于所述第二侧边面与所述光学元件的主光轴的距离的最小值。
  3. 根据权利要求1所述的显示装置，其中，所述显示屏沿第二方向具有相对的第三侧边面和第四侧边面，所述第三侧边面连接在所述第一侧边面和所述第二侧边面之间，所述第四侧边面连接在所述第一侧边面和所述第二侧边面之间，所述第二方向与所述第一方向呈夹角；所述第三侧边面与所述第一侧边面的连接处形成有第一缺口。
  4. 根据权利要求3所述的显示装置，其中，所述光学元件具有沿所述第二方向相对设置的第三轮廓和第四轮廓；所述第三轮廓连接在所述第一轮廓和所述第二轮廓之间，所述第四轮廓连接在所述第一轮廓和所述第二轮廓之间；所述第三轮廓与所述光学元件的主光轴的距离的最小值小于所述第二轮廓与所述光学元件的主光轴的距离的最小值。
  5. 根据权利要求3所述的显示装置，其中，所述光学元件具有沿所述第二方向相对设置的第三轮廓和第四轮廓；所述第三轮廓连接在所述第一轮廓和所述第二轮廓之间，所述第四轮廓连接在所述第一轮廓和所述第二轮廓之间；所述第四轮廓与所述光学元件的主光轴的距离的最小值小于所述第二轮廓与所述光学元件的主光轴的距离的最小值。
  6. 根据权利要求3所述的显示装置，其中，所述第四侧边面与所述第一侧边面的连接处形成有第二缺口。
  7. 根据权利要求3所述的显示装置，其中，所述第四侧边面与所述第二侧边面的连接处形成有第三缺口。
  8. 根据权利要求3所述的显示装置，其中，所述第三侧边面与所述第二侧边面的连接处形成有第四缺口。
  9. 根据权利要求3所述的显示装置，其中，所述第一缺口形成的连接面与所述第一侧边面呈145°。
  10. 根据权利要求3所述的显示装置，其中，所述第一缺口形成的连接面与所述第三侧边面呈145°。
  11. 根据权利要求3所述的显示装置，其中，所述显示屏的横截面呈正八边形。
  12. 根据权利要求4所述的显示装置，其中，所述第一轮廓、所述第二轮廓、所述第三轮廓和所述第四轮廓为弧形，且所述第一轮廓、所述第二轮廓、所述第三轮廓和所述第四轮廓的曲率各不相同。
  13. 根据权利要求4所述的显示装置，其中，所述第一轮廓、所述第三轮廓和所述第四轮廓为直线，所述第二轮廓为弧形，且所述第二轮廓的曲率中心位于所述光学元件的主光轴上；所述第一轮廓与所述第三轮廓之间为圆弧连接，所述第一轮廓与所述第四轮廓之间为圆弧连接。
  14. 根据权利要求1所述的显示装置，其中，在沿所述光学元件主光轴的方向上，所述显示屏在所述光学元件上的正投影位于所述光学元件内。
  15. 根据权利要求4所述的显示装置，其中，所述第四轮廓与所述光学元件的主光轴的距离的最小值小于所述第三轮廓与所述光学元件的主光轴的距离的最小值。
  16. 根据权利要求1所述的显示装置，其中，所述光学元件具有光学中心，所述光学元件的主光轴穿过所述光学中心；两个所述光机的光学元件的光学中心形成第一连线，两个所述光机的显示屏的几何中心形成第二连线，所述第一连线与所述第二连线平行；所述光学元件的主光轴穿过所述第二连线。
  17. 根据权利要求1所述的显示装置，其中，所述光学元件具有光学中心，所述光学元件的主光轴穿过所述光学中心；两个所述光机的光学元件的光学中心形成第一连线，两个所述光机的显示屏的几何中心形成第二连线，所述第一连线与所述第二连线平行；所述光学元件的主光轴与所述第二连线呈夹角且不相交。
  18. 根据权利要求1所述的显示装置，其中，在沿所述第一方向的观察方向上，两个所述光机对应的观察点的视场角之和大于或等于120°。
  19. 根据权利要求1所述的显示装置，其中，在沿所述第一方向的观察方向上，两个所述光机对应的观察点的视场角的合像角度大于或等于80°。
  20. 根据权利要求1所述的显示装置，其中，在沿所述第二方向的观察方向上，两个所述光机对应的观察点的视场角大于或等于90°。
PCT/CN2023/104765 2023-06-15 2023-06-30 显示装置 Ceased WO2024254919A1 (zh)

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