CN-116360099-B - Augmented reality display device

Abstract

The invention provides an augmented reality display device for providing an augmented reality image to eyes of a user. The augmented reality display device comprises a curved eyepiece, a plurality of first micro-mirrors and two first displays. The first micro-mirrors are disposed on the curved eyepiece. The two first displays are respectively arranged on two opposite sides of the curved eyepiece, each first display is used for emitting a first image beam, and the first micro-mirrors are used for imaging the two first image beams emitted by the two first displays on the retina of the eye so as to form an augmented reality image. Wherein, the horizontal angle of view formed by the first micro-mirrors to the eyes is in the range of 80 degrees to 110 degrees.

Inventors

• Tu Zongwei
• QIU YIRONG
• HUANG SHITING
• LI YANXIAN

Assignees

• 宏碁股份有限公司

Dates

Publication Date

20260508

Application Date

20211228

Claims (12)

1. 1. An augmented reality display device to provide an augmented reality image to an eye of a user, the augmented reality display device comprising: curved ocular; a plurality of first micro-reflectors arranged on the curved eyepiece, and Two first displays respectively arranged on two opposite sides of the curved eyepiece, each first display used for emitting a first image beam, the plurality of first micro-reflectors used for imaging the two first image beams emitted by the two first displays on the retina of the eye to form the augmented reality image, Wherein a horizontal viewing angle formed by the plurality of first micromirrors to the eye is in a range of 80 degrees to 110 degrees, and for a portion of the plurality of first micromirrors, different groups of first micromirrors are illuminated by first image beams provided by different first displays, the plurality of first micromirrors include a first group of micromirrors adjacent to a first one of the two first displays and a second group of micromirrors adjacent to a second one of the two first displays, the first image beam emitted by the first one of the two first displays is reflected by the second group of micromirrors to the eye, and the first image beam emitted by the second one of the two first displays is reflected by the first group of micromirrors to the eye.
2. 2. The augmented reality display device of claim 1, wherein a width of each first micro mirror is less than a diameter of a pupil of the eye.
3. 3. The augmented reality display device of claim 1, wherein the curved eyepiece is curved in one dimension.
4. 4. The augmented reality display device of claim 1, wherein the curved eyepiece is curved in two dimensions.
5. 5. The augmented reality display device of claim 1, further comprising: a plurality of second micro-reflectors arranged on the curved eyepiece, and The second displays are respectively arranged on the other two opposite sides of the curved eyepiece, each second display is used for emitting a second image beam, the plurality of second micro-reflectors are used for imaging the two second image beams emitted by the two second displays on the retina of the eye so as to form the augmented reality image, and for part of the plurality of second micro-reflectors, the second micro-reflectors of different groups are irradiated by the second image beams provided by different second displays.
6. 6. The augmented reality display device of claim 5, wherein the two first image beams have a first polarization direction and the two second image beams have a second polarization direction, the plurality of first micro-mirrors being adapted to reflect light having the first polarization direction and to transmit light having the second polarization direction, the plurality of second micro-mirrors being adapted to reflect light having the second polarization direction and to transmit light having the first polarization direction.
7. 7. The augmented reality display device of claim 5, further comprising: two first optical elements, each of which is disposed between the adjacent first display and the curved eyepiece and is located on the transmission path of the first image beam emitted by the adjacent first display, and And each second optical element is arranged between the adjacent second display and the curved eyepiece and is positioned on the transmission path of the second image light beam emitted by the adjacent second display.
8. 8. The augmented reality display device of claim 7, wherein the two first optical elements and the two second optical elements are lenses having smooth curved surfaces, free-form surface lenses, or fresnel lenses.
9. 9. The augmented reality display device of claim 7, wherein the two first optical elements and the two second optical elements are polarizers or wave plates.
10. 10. The augmented reality display device of claim 1, wherein a horizontal viewing angle formed by the plurality of first micro-mirrors for the eye is in a range of 90 degrees to 110 degrees.
11. 11. The augmented reality display device of claim 1, wherein the two first displays are disposed on an upper side and a lower side of the curved eyepiece, respectively, wherein the upper side and the lower side are relative to the eyes of the user.
12. 12. The augmented reality display device of claim 1, wherein the two first displays are disposed on a left side and a right side of the curved eyepiece, respectively, wherein the left side and the right side are relative to the eyes of the user.

Description

Augmented reality display device Technical Field The present invention relates to a display device, and more particularly, to an augmented reality display device. Background With the progress of display technology, virtual Reality (VR) display technology and augmented reality (augmented reality, AR) display technology are gradually developed. In the existing virtual reality or augmented reality display technology, different images with visual angle differences are respectively projected on a left eye and a right eye, and the left eye and the right eye are respectively focused on different planes, so that stereoscopic vision can be generated. However, research has pointed out that although such stereoscopic vision can produce stereoscopic effect, the human eyes still focus on the same depth positions of different planes respectively, and compared with the positions of different depths of the human eyes focusing on a stereoscopic object in the actual space, the visual effect can be found to be different. Thus, existing virtual reality or augmented reality displays may cause one of the reasons for dizziness of some users, an effect called a vergence adjustment conflict (vergence-accommodation conflict). In order to solve the convergence adjustment conflict, one prior art is to reflect an image beam to human eyes by a pinhole mirror, and achieve a long depth of field effect by using a pinhole imaging technology, so that the focusing distance range of the human eyes can be wider, and the intersecting distance of the eyes and the focusing distance of the human eyes can be consistent, so that the convergence adjustment conflict can be effectively solved. However, in the prior art, the pinhole mirrors are arranged in a plane, and the angle of view achieved by the pinhole mirrors is not large enough. In addition, when the viewing angle is larger, the number of the corresponding pinhole mirrors is larger, and the length of the lateral arrangement range of the pinhole mirrors is longer, so that the size of the augmented reality display adopting the pinhole mirrors is too large. Disclosure of Invention The invention is directed to an augmented reality display device having both a large field angle and good space utilization. An embodiment of the present invention proposes an augmented reality display device for providing an augmented reality image to an eye of a user. The augmented reality display device comprises a curved eyepiece, a plurality of first micro-mirrors and two first displays. The first micro-mirrors are disposed on the curved eyepiece. The two first displays are respectively arranged on two opposite sides of the curved eyepiece, each first display is used for emitting a first image beam, and the first micro-mirrors are used for imaging the two first image beams emitted by the two first displays on the retina of the eye so as to form an augmented reality image. The angle of view of the first micromirrors in the horizontal direction is in the range of 80 degrees to 110 degrees, and for some of the first micromirrors, the first micromirrors of different groups are illuminated by the first image light beams provided by different first displays. In the augmented reality display device of the embodiment of the present invention, a curved eyepiece is used, the angle of view formed by the first micromirrors on the eyes is in the range of 80 degrees to 110 degrees, and for some of the first micromirrors, different groups of first micromirrors are illuminated by first image beams provided by different first displays. Therefore, the augmented reality display device has both a large field angle and good space utilization, so that a larger field angle can be achieved with a smaller volume. Drawings FIG. 1A is a schematic top view of an augmented reality display device according to an embodiment of the invention; FIG. 1B is a schematic perspective view of the augmented reality display device of FIG. 1A; Fig. 2 is a schematic perspective view of an augmented reality display device according to another embodiment of the present invention; Fig. 3 is a schematic perspective view of an augmented reality display device according to yet another embodiment of the present invention; fig. 4 is a schematic perspective view of an augmented reality display device according to still another embodiment of the present invention; fig. 5 is a schematic perspective view of an augmented reality display device according to another embodiment of the present invention. Detailed Description Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts. Fig. 1A is a schematic top view of an augmented reality display device according to an embodiment of the invention, and fig. 1B is a schematic perspective view of t