Eyepiece lens system
US6130785A · kind A · utility
20Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1998 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | May 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/4277
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided an eyepiece lens system for viewing an image formed by an objective lens system. The eyepiece lens system includes a first refraction lens having a positive power, a second refraction lens having a positive power and at least one diffraction lens having a phase grating structure. The first and second lenses are arranged on an eye side with respect to a plane on which the image is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.