Title:
ABERRATION VARIABLE LENS
Document Type and Number:
Japanese Patent JPS5276921
Kind Code:
A
Abstract:
PURPOSE: To attain a solft focus by dividing the lens system into two groups by a variable air interval, shifting the lens system of the two groups at a different speed, and changing the amt. of occurrence of spherical aberration.
Inventors:
OKANO YUKIO
NAKAMURA AKIYOSHI
OGURA TOSHINOBU
NAKAMURA AKIYOSHI
OGURA TOSHINOBU
Application Number:
JP15454075A
Publication Date:
June 28, 1977
Filing Date:
December 22, 1975
Export Citation:
Assignee:
MINOLTA CAMERA KK
International Classes:
G02B9/60; G02B9/34; G02B13/20; (IPC1-7): G02B9/34; G02B9/60
Foreign References:
| US1463132A | 1923-07-24 |