Light body
US11624860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2020 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | Dec 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0047
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing a half mirror includes forming a reflection region by which light is reflected and a transmission region through which the light is transmitted on a surface of a transparent plate Only the reflection region is coated with a plating. The coating includes a masking step of coating a position of the transparent plate corresponding to the transmission region with a masking material, a plating step of coating the entire surface which includes the transmission region which has been coated with the masking material and the reflection region with the plating, a plating removing step of removing the plating to a depth in which the masking material is exposed after the plating step, and a masking material removing step of removing the masking material after the plating removing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.