具有分区衍射光学器件的图像光导
By using partitioned coupling diffractive optics in a head-mounted display, the diffraction efficiency and uniformity issues of the image light guide are solved, resulting in stronger image-carrying light output and more realistic virtual image presentation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- VUZIX CORP
- Filing Date
- 2021-11-24
- Publication Date
- 2026-07-17
AI Technical Summary
In existing head-mounted displays, there are deficiencies in the diffraction efficiency of the image light guide, the output intensity of the image-carrying light, and the uniformity across the output aperture, which affect the presentation effect of virtual images.
A partitioned coupling diffractive optical device is used, including a first region and a second region that are adjacent to each other and have different sets of diffraction features. By expanding the eyebox through multiple encounters, the pupil expansion along the virtual image is provided, which enhances the uniform distribution of light carried by the image.
It improves the presentation quality of virtual images, enhances the output intensity and uniformity of light carried by the image, reduces the sensitivity to the viewer's eye position, and provides a more realistic virtual image experience.
Smart Images
Figure CN116547574B_ABST