Methods and apparatus providing improved visual capabilities of optical instruments
US7672070B2 · kind B2 · utility
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6References
6Claims
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Key dates
| Filing date | Sep 1, 2006 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Apr 29, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for forming an image has one or more lenses in an optical path, at least one angular-sensitive light transmission filter in the optical path, in which transmission varies with change in angular orientation of the filter with reference to the direction of light in the optical path, and a mechanism for adjusting the angle of the light transmission filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.