Image pickup apparatus and zoom lens
US7466495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2008 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Apr 7, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image pickup apparatus includes a zoom lens including at least two movable lens groups; an image pickup element that converts an optical image formed with the zoom lens into an electric signal; and an image processor that electrically corrects a lateral chromatic aberration to be generated at the zoom lens. The zoom lens satisfies Conditional Expressions (1) and (2) as follows,−5.0<W_ate(X)/T_ate(X)<−0.2 (1)0.003<|Max_ate(10)/Himg |<0.03 (2)where W_ate(X) is an aberration amount of the lateral chromatic aberration from the C-line to the g-line, at a wide-angle end, corresponding to a (X×10) % image height, T_ate(X) is an aberration amount of the lateral chromatic aberration from the C-line to the g-line, at a telephoto end, corresponding to a (X×10) % image height, Max_ate(X) is one of W_ate(10) and T_ate(10), the one having a larger absolute value, and Himg is a diagonal length of the image pickup element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.