Imaging lens system and imaging apparatus
US7663814B2 · kind B2 · utility
31Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2008 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Dec 12, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/146
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The imaging lens system includes a negative first lens disposed on a most object side, having a concave surface directed toward the object side and having a meniscus shape, a cemented lens LC disposed on a most image side and having a convex surface on its most object side, and an aperture diaphragm disposed just in front of the object side of the cemented lens. The system satisfies the following conditional expressions:0.05<(R2−R1)/(R1+R2)<0.25vd1 −vd2 >15where
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.