Microcrack free polarization plate
US8817373B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Jul 3, 2008 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jun 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An end face of a polarization plate cut by laser becomes a substantially flat surface having only sloping micro waviness because of having been melted once to be solidified. Since the surface has few stress-concentrated parts that may cause microcracks, this prevents microcracks from easily being produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.