Holographic endoscope
US4589723A · kind A · utility
4Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1984 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Apr 24, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H1/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic endoscope transmits light to an object and receives and transmits the image of that object. The light transmitted is used to illuminate an object with one of two beams which are derived from a single laser, while the image received is transmitted from the object. The light from the image transmitted passes through a field lens, and a second beam or reference beam is made to interfere with this light. The resulting interference pattern is recorded on a photographic plate, forming the hologram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.