Five-element optical device
US7154683B1 · kind B1 · utility
1Cited by
21References
15Claims
0Family size
Inventor
Key dates
| Filing date | Jul 6, 2005 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jul 6, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device with five air-spaced optical elements. An optical device in the form of an eyepiece is disclosed with a center negative lens and two outer positive lenses on each side of the intermediate negative lens. The eyepiece transmits light from an object to an exit pupil along angles corresponding to the position of a focus point on an object. In a preferred embodiment the positive lenses are identical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.