Title:
IMAGE PICKUP LENS
Document Type and Number:
Japanese Patent JP2003329921
Kind Code:
A
Abstract:
To provide a bright, compact and inexpensive image pickup lens system which is adaptable to an angle of view exceeding 30°, in which the incident angle on an image pickup device is made small, whose entire length is short and whose aberration is excellently corrected.
The image pickup lens is constituted of an aperture diaphragm, a biconvex positive lens, and a meniscus lens whose surface on an object side is concave from the object side, and respective lenses have at least one aspehrical surface.
Inventors:
NINOMIYA NOBORU
YAMAGUCHI NAOHISA
MATSUO EIKI
YAMAGUCHI NAOHISA
MATSUO EIKI
Application Number:
JP2002136254A
Publication Date:
November 19, 2003
Filing Date:
May 10, 2002
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G02B13/00; G02B3/02; G02B13/18; (IPC1-7): G02B13/00; G02B13/18
Attorney, Agent or Firm:
Masayanagi Ueyanagi (2 outside)