Telecentric zoom lens
US6243212A · kind A · utility
1Cited by
18References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A telecentric zoom lens having telecentric forming aperture optically and preferably mechanically intermediate an objective lens and a zoom group. The aperture is fixed along an optical axis and selected to provide a constant speed on an image side of the lens system. The location of the aperture relative to the zoom group maintains telecentricity of the lens in object space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.