Optical element, liquid crystal display device, and projection-type image display device
US11537008B2 · kind B2 · utility
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1References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2019 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Jul 2, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133548
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is an optical element which significantly reduces arrangement space, has superior durability, and also enables increased costs to be curbed. Functions of a polarizer and a phase difference compensation element are integrated. Specifically, the optical element has a transparent substrate, and a polarizer on one side of the transparent substrate, and has a phase difference compensation element on a side of the transparent substrate opposite from the polarizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.