Title:
WIDE-ANGLE LENS
Document Type and Number:
Japanese Patent JPS5430028
Kind Code:
A
Abstract:
PURPOSE: To improve the performance and compensate the distorsion, afocal aberration and chromatic aberration while reducing the size of a lens system of inversely telescopic wide-angle having a meniscus positive lens positioned in front by combining nine groups of nine lenses.
Inventors:
IKEMORI KEIJI
Application Number:
JP9644277A
Publication Date:
March 06, 1979
Filing Date:
August 11, 1977
Export Citation:
Assignee:
CANON KK
International Classes:
G02B9/64; G02B13/04; (IPC1-7): G02B9/64; G02B13/04