Title:
DOUBLE-GAUSS TYPE OF LENS FOR COMPACT CAMERA
Document Type and Number:
WIPO Patent Application WO2005088377
Kind Code:
A3
Abstract:
A lens assembly is constructed to accommodate certain, often competing, design characteristics. The lens assembly provides high optical performance in a compact and easy to manufacture system. The lens assembly allows a manufacturer to produce a system that is common among various aperture sizes so that manufacturability is enhanced. The lens assembly is also suitable for use in connection with additional components, such as filters and/or electronic detectors, such as CCD's and/or CMOS's. The lens assembly may be arranged to provide a relatively wide angle, such as approximately 40 degrees, with minimal distortion, for example, less than 1 % a ratio of the length of the lens assembly to the back focal length of approximately 1.39 to accommodate additional components, such as optical filters. The lens assembly may be configured as a four group, six element, lens assembly for example of the double Gauss (Biotar) type. The lens assembly may contain compensating aberrations to compensate the aberrations of plane parallel plates that may be used in connection with the lens assembly.
Inventors:
THOMPSON ROBERT LEE (US)
TESAR JOHN (US)
TESAR JOHN (US)
Application Number:
PCT/US2005/008260
Publication Date:
June 01, 2006
Filing Date:
March 11, 2005
Export Citation:
Assignee:
PINOTAGE LLC (US)
THOMPSON ROBERT LEE (US)
TESAR JOHN (US)
THOMPSON ROBERT LEE (US)
TESAR JOHN (US)
International Classes:
G02B9/62; G02B9/34; G02B13/00; G02B13/22; G02B27/00
Foreign References:
| US4291952A | 1981-09-29 | |||
| US3560079A | 1971-02-02 | |||
| JPH10206922A | 1998-08-07 |
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