Lightguide structure, optical device and imaging system
US10656421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2014 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Oct 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
It is provided that a lightguide structure comprising: a first portion disposed to receive light rays emitted by an external display, a second portion disposed to provide, to a second surface facing a viewer, the light rays from the first portion and ambient light, wherein the second portion has a plurality of first surfaces for reflecting light rays and at least one second surface which the light rays and the ambient light perpendicularly enter into and pass through, an intermediate portion disposed to connect between the first portion and the second portion and reflect the light rays from the first portion for transferring the light rays to the second portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.