Image relaying optical system
US5142410A · kind A · utility
41Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1990 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Apr 13, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/2446
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image transmission optical system wherein a lens unit serving for relaying an image for a unit relaying distance consists of two bar-shaped cemented lens components, and each of said lens components consists of a bar-shaped lens element and two lens elements which are cemented to both the end surfaces of said bar-shaped lens element respectively of said bar-shaped lens element and have a refractive index higher than that of said bar-shaped lens element. This image transmission optical system comprises a small number of air-contact surfaces and has favorably corrected aberrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.