Lens housing having aperture device
US6324019A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2000 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | Feb 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens housing including an anti-flare aperture device in the form of a thin planar aperture member. In one embodiment, a plurality of guide pins extend from a group-3 lens element, with a compression spring on one of the guide pins to bias the group-3 lens in the direction of its optical axis. The aperture member, the position of which is defined by two guide pins, is sandwiched between the group-3 lens and the compression spring, thereby being supported. The aperture member moves backward and forward together with the group-3 lens supported by the guide pins. In a second embodiment, the aperture device is attached directly to one side of the lens elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.