Compact lens system
US7236315B2 · kind B2 · utility
7Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Sep 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact lens system includes a first positive lens element (1) on the object side and a second negative lens element (2) on the image side. The first positive lens element is a meniscus lens having a convex surface (11) facing the object side. The second negative lens element is also a meniscus lens having a convex surface (12) facing the image side. Both of the first and second lens elements are aspheric lenses each having at least one aspheric surface. The first and second lens elements are made of different plastic materials and are symmetrically arranged with respect to each other along the optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.