Optical device and display apparatus
US11340472B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2017 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Feb 10, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A first stereoscopic image display device includes a light guide plate having a plurality of reflectors and causes an observer to recognize an undistorted stereoscopic image even when the observer views a stereoscopic image from a high angle with respect to a direction normal to the front surface of the light guide plate. In a plan view from a direction vertical to an outgoing surface, when four quadrants are specified for each of the reflectors, the four quadrants taking a position of each of the reflectors as an origin, the four quadrants being divided by two straight lines orthogonal to each other and inclined 45° with respect to a direction in which the incident light is incident on each of the reflectors, light changed in the optical path by each of the reflectors is emitted to a quadrant adjacent to a quadrant on which incident light is incident.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.