Stereo imaging system
US7075735B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2004 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Jul 10, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a stereo imaging unit or system that can have a suitable degree of parallax and a wide angle of view even when used with an image pickup device smaller than film. The stereo imaging unit comprises a first entrance window 5L and a second entrance window 5R juxtaposed in the left-and-right direction, a plurality of reflecting surfaces 21L, 22L for guiding a light beam from the first entrance window 5L to a single image pickup device 4, a plurality of reflecting surfaces 21R, 22R for guiding a light beam from the second entrance window 5R to the image pickup device 4, a first negative lens group 1L for the light beam from the first entrance window 5L, a first positive lens group 3 located at an image side thereof via the longest air spacing in the lens system, a second lens group 1R for the light beam from the second entrance window 5R, and a second positive lens group 3 located on an image side thereof via the longest air spacing in the lens system, and satisfies conditions (1), (2), (3) and (4) for defining the focal lengths of the negative and positive lens groups in terms of the focal length of the overall lens system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.