CCD video scope with illumination to the object
US5689602A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Sep 13, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A CCD video scope is mounted in a camera head and has an image capture optical system defining an optical axis, and a half mirror with a light source offset from the optical axis and facing the half mirror, which coaxially defracts illumination light in relation to the optical axis. The resultant optical image is incident on a CCD element also lying on the optical axis. Bundled fibers are mounted between the light source and the half mirror, and have a diameter of less than 250.mu. and a length of 10 times or more the diameter. The light source has a light focusing lens with an exit angle equal to or less than the maximum light incident angle of the optical fiber elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.