Title:
OBJECTIVE LENS
Document Type and Number:
Japanese Patent JPS6429811
Kind Code:
A
Abstract:
PURPOSE:To obtain a lens which is easily worked, assembled, and adjusted and has excellent image forming performance while reducing performance deterioration caused in working or assembly owing to eccentricity by forming both surfaces aspherically and satisfying a specific condition. CONSTITUTION:This is an objective having aspherical surfaces as both surfaces and then 0.665
Inventors:
KASHIWAGI NAOKI
YAMAZAKI SHOICHI
YAMAZAKI SHOICHI
Application Number:
JP18585087A
Publication Date:
January 31, 1989
Filing Date:
July 24, 1987
Export Citation:
Assignee:
CANON KK
International Classes:
G02B13/18; G02B13/00; (IPC1-7): G02B13/00; G02B13/18
Attorney, Agent or Firm:
Marushima Giichi