Eyepiece for head-mounted display and method for making same
By using a master polymer wafer with oversized surface gratings that are partially non-functionalized, the eyepieces can accommodate varying interpupillary distances, improving the efficiency and versatility of head-mounted displays in presenting stereoscopic images.
JP7755606B2Active Publication Date: 2025-10-16MAGIC LEAP INC
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Patent Information
- Application Number
- JP2022578825
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2020-06-25
- Filing Date
- 2021-06-25
- Publication Date
- 2025-10-16
- Estimated Expiration
- 2041-06-25
AI Technical Summary
Technical Problem
Existing eyepieces for head-mounted displays struggle to accommodate a wide range of interpupillary distances, limiting their versatility and efficiency in producing stereoscopic images.
Method used
The eyepieces utilize two surface gratings, an input coupling grating and a pupil expander grating, which are singulated from a master polymer wafer with oversized areas that are partially non-functionalized to accommodate different pupil distances, allowing for a single mold to produce eyepieces suitable for various interpupillary distances.
Benefits of technology
This approach enables the production of eyepieces that can accommodate a range of interpupillary distances, enhancing the versatility and efficiency of head-mounted displays in presenting stereoscopic images.
✦ Generated by Eureka AI based on patent content.
Abstract
The method includes providing a wafer including a first surface grating extending across a first area of a surface of the wafer and a second surface grating extending across a second area of the surface of the wafer, de-functionalizing a portion of the surface grating within at least one of the first surface grating area and the second surface grating area, and singulating an eyepiece from the wafer, the eyepiece including a portion of the first surface grating area and a portion of the second surface grating area, wherein the first surface grating in the eyepiece corresponds to an input coupling grating for a head mounted display and the second surface grating corresponds to a pupil expander grating for the head mounted display.
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