Liquid crystal lens and 3D display
US10082719B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2016 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Feb 18, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/38
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure provides a liquid crystal lens, including an upper substrate, a lower substrate, a liquid crystal layer and a spacer, the liquid crystal layer and the spacer are disposed between the upper substrate and the lower substrate. A surface of the spacer is coated with a first antireflection film and a second antireflection film in turn. An index of refraction of the liquid crystal layer is n0. An index of refraction of the first antireflection film is n2, a thickness of which is d2. An index of refraction of the second antireflection film is n1, a thickness of the second antireflection film is d1. An index of refraction of the spacer is n3, and n1d1=n2d2=λ/6, where λ is a wavelength of light. The liquid crystal lens and the 3D display can reduce light intensity of the reflective rays on the spacer and increase contrast of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.