Refractive lens cradle
US5555134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1995 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Feb 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/026
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A refractive lens element (16) with a very thin edge thickness is mounted to withstand gun shock loads by utilizing a cell cradle (14) that is contoured to conform to the lens element surface profile (24). The lens is employed in a system having a rectangular clear aperture (26) which when projected on the circular lens defines four lens segments (36a-36d) outside of the clear aperture. The cell cradle has an opening (26) conforming to the clear aperture and carries a compliant padding (40) coextensive with the lens segments outside of the clear aperture to support the lens axially. The lens perimetrical edge (20) is bonded to the cell with a compliant bond material (44) to secure the lens in a radially symmetric position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.