Photographing lens of a camera having a mask for blocking off noise light which generates in relation to a non-circular lens
US6341901B1 · kind B1 · utility
30Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1999 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Apr 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B11/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographing lens of a camera comprises a non-circular lens and a light blocking mask. The non-circular lens receives an optical image from an object and forms an image on a photographing medium. The light blocking mask is fixed in front of the non-circular lens, and blocks noise light generated in relation to the non-circular lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.