Lens for use with imaging sensors
US10620424B1 · kind B1 · utility
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1References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 15, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Sep 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/2484
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An objective element for use in an endoscope is provided. The objective element comprises a flat glass plate that is in contact with the plano side of a plano-convex lens. The side of the flat glass plate in contact with the plano-convex lens is coated with an opaque material other than an aperture that is in line with the axis of the plano-convex lens. Alternatively, the plano side of a plano-convex lens may be coated with an opaque material other than an aperture that is in line with the axis of the plano-convex lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.