Triplet lens system with diffractive lens features
US6101035A · kind A · utility
17Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 1997 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Oct 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0037
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A triplet lens system composed of a first positive lens element, a second negative lens element and a third positive lens element. At least one lens surface is provided with a blazed zonal structure having a function of a positive diffractive lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.