Light guide plate device including optical path changer
US11982823B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Feb 15, 2022 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Feb 15, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/254
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light guide plate according to one or more embodiments may include an incident surface that receives light and an optical path changer on a back surface perpendicular to the incident surface. Light reflected by the optical path changer forms a stereoscopic image including a near formed image at an imaging position within a predetermined distance from the back surface and a distant formed image at another imaging position. The near formed image includes an image formation area with a larger total area than an image formation area of the distant formed image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.