Lower index-gap corrective wedge prism
US10620348B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Nov 3, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Jan 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system providing improved control over light reflectivity is provided. The optical system includes an index-gap wedge prism to collect light escaping through the internal reflective surface of an optical element for recombination with light reflected by the internal reflective surface of the optical element. The index-gap wedge prism collects and redirects the escaped light back into the primary reflected path of the optical element to provide an aligned and correlated light across a range of applications, including applications where optical coatings on key surfaces may not be feasible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.