Light source module and prism sheet thereof
US10598847B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2018 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Jan 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light source module includes a light guide plate, a light source, a first prism sheet, a second prism sheet and a third prism sheet. The light guide plate includes a light emitting surface, a bottom surface and a light incident surface. The light source is disposed on the light incident surface and emits a beam into the light guide plate through the light incident surface. The first prism sheet is disposed on the light emitting surface and includes a plurality of first prism units located between the light emitting surface and the second prism sheet. The second prism sheet includes a plurality of second prism units extending in a first direction and located between the first prism sheet and the third prism sheet. The third prism sheet includes a plurality of third prism units extending in a second direction. The first direction is perpendicular to the second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.