A grating waveguide display device
A grating waveguide and display device technology, which is applied in the field of augmented reality display devices, can solve problems such as difficult design, uniformity influence, light effect waste, etc., and achieve the effects of large eye movement range, enhanced uniformity, and improved user experience
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0045] refer to image 3 . The optical machine 301 projects the image source through the collimated light path and emits it in the form of parallel light. The light is split by the optical prism beam splitting system 401, wherein the optical prism is made of K9 glass, or other transparent optical materials with a critical angle greater than 45° as the base. After the light exits the optical machine, it passes through the beam splitter 311 and is divided into two beams of equal intensity light, the left direction and the downward direction. The left direction light continues to pass through the first reflection surface 312 which is at an angle of 45° to the exit surface, flips 90° and reaches the second exit surface. A grating is coupled into region (left) 202a. At the same time, the downward light is reflected twice by the second reflective surface 313 and the third reflective surface 314 and enters the first grating coupling-in region (right) 202b in the same direction as t...
Embodiment 2
[0049] refer to Figure 4 . The optical machine 301 projects the image source through the collimated light path and emits it in the form of parallel light. Through the optical prism beam splitting system 401, the optical prism is made of K9 glass, or other transparent optical materials with a critical angle less than 45° as the base. After the light exits the light machine, it passes through the beam splitter 321 and is divided into two beams of equal intensity, rightward and downward. According to the characteristics of the light splitter, the light machine can also be incident on the left side of the prism, which will have the same effect. The light going to the right continues to pass through the reflective surface 322 at an angle of 45° to the outgoing surface, flips 90°, passes through the outgoing surface, and reaches the second grating coupling region (right) 202b. At the same time, the downward light is directly irradiated on the first grating coupling-in region (lef...
Embodiment 3
[0052] refer to Figure 5 . The optical machine 301 projects the image source through the collimated light path and emits it in the form of parallel light. Through the optical prism beam splitting system 401 , the optical prism is made of K9 glass, or other transparent optical materials with a critical angle greater than 45° as the base. After the light exits the optical machine, it passes through the beam splitter 331 and is divided into two beams of equal intensity, left and right. The left light continues to pass through the reflective surface 312, which is at an angle of 67.5° to the exit surface, flipped 135° and reaches the first grating through the exit surface. In-coupling region (left) 202a. At the same time, the right light beam is reversed by 135° through the reflective surface 333 having an angle of 67.5° with the outgoing surface, and then enters the first grating coupling-in region (right) 202b in the same direction as the first light beam. Subsequent further ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| angle | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More