Retainer
US6825998B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2004 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Feb 26, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/182
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A retainer for holding a rotationally symmetrical optical element, includes a retaining member that holds the optical element via three support parts arranged at approximately 120° intervals, and a joint member that joints the optical element with the retaining member, wherein |(zb−0.6wb)−(zg+1.2)|≦1 is met, where zg is a coordinate of a gravity center of the optical element, zb is a coordinate of a center position of a width of said joint member in the z axis direction by which said joint member contacts the optical element, and wb is the width of said joint member in the z axis direction by which said joint member contacts the optical element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.