Stacking-type optical sheet module
US10191203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2015 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Apr 6, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stacking-type optical sheet module includes an upper optical sheet having a first structural pattern with first unit light-condensing bodies successively repeated and cross-sectional areas gradually decreasing towards the top. A lower optical sheet has a second structural pattern and is below the upper optical sheet in a stack. Second and third unit light-condensing bodies are successively disposed in the second structural pattern. The second unit bodies have a gradually decreasing cross-sectional area toward the top and are joined with the upper optical sheet, and the third unit bodies have a gradually decreasing cross-sectional area toward the top, a vertical distance from a lowest to a highest portion thereof being relatively shorter than a corresponding vertical distance of the second unit bodies. A vertical angle of the highest portion of the second unit bodies is relatively smaller than a vertical angle of the highest portion of the third unit bodies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.