Optical element including strip-shaped prisms, light guide plate, prism, backlight module and display device
US10132966B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 27, 2016 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Jan 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0058
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An optical element includes a light transmitting substrate which includes a first surface having strip-shaped prisms arranged parallel to each other. In a direction along which the prisms are arranged, a side of each prism close to a center of the light transmitting substrate has a refractive surface; from an end of the refracting surface close to a center of the light transmitting substrate to another end of the refracting surface close to an edge of the light transmitting substrate, the refracting surface inclines gradually along a direction away from the first surface. From the prism nearest to the center of the light transmitting substrate to the prism farthest to the center of the light transmitting substrate, an angle between the refracting surface and a normal of the first surface is gradually increased. A light guide plate, a prism, a backlight module and a display device are further provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.