Borescope
US5540650A · kind A · utility
4Cited by
10References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Jul 7, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A borescope has an inverting dove prism (24) mounted on an ocular mount (12) proximally of an ocular lens (11). The ocular mount is axially adjustable by rotation of a collar (26) to achieve focusing and is rotatable about the axis independently of the focus position in unison with orbital scanning of a reflector (7) at the distal end of the borescope. Location of the dove prism proximally of the ocular lens avoids the need to include an invertor within the optical relay of insertion tube (2) thereby avoiding aperture reduction and simplifying assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.