Title:
OBJECTIVE LENS
Document Type and Number:
Japanese Patent JPS5232345
Kind Code:
A
Abstract:
PURPOSE: To reduce the chromatic aberration less than ten-thousandth of the focus by employing an objective lens composed of a convex and a concave lenses.
Inventors:
TAKANO EIICHI
Application Number:
JP10863475A
Publication Date:
March 11, 1977
Filing Date:
September 08, 1975
Export Citation:
Assignee:
CANON KK
International Classes:
G02B1/02; G02B9/04; G02B9/10; (IPC1-7): G02B1/02; G02B9/10