Method for producing mold for use in duplicating light diffusion sheet, light diffusion sheet and method for producing the same, and screen
US7710644B2 · kind B2 · utility
2Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2008 |
| Grant date | May 4, 2010 |
| Priority date | — |
| Expiry date | Feb 27, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of producing a mold for use in duplicating a light diffusion sheet is provided. The method includes a step of conducting sand blasting for blasting abrasive material from a blast gun to a surface of a mold base material to form unevenness in the surface of the mold base material, wherein the abrasive material is blasted to the surface of the mold base material at a blast angle of less than 90°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.