Title:
光学レンズおよびその製造方法、複合レンズおよびその製造方法、ならびに接合レンズおよびその製造方法
Document Type and Number:
Japanese Patent JP4874084
Kind Code:
B2
Abstract:
An optical lens includes a lens effective portion, an inclined portion and a flange portion. The lens effective portion has, on a first side, a lens face with a small radius of curvature and also has, on a second side, a lens face with a large radius of curvature. The inclined portion has, on the first side, an inclined face inclined outwardly from the first side to the second side. The flange portion has, on the second side, a reference face protruding longer than the lens face with the large radius of curvature on the second side. Thus, it is possible to obtain an optical lens which is less susceptible to deformation or chipping and suppresses transmission eccentricity, a compound lens and a method for producing the same, as well as a cemented lens and a method for producing the same.
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Inventors:
Ueta Jo
Youhei Nakagawa
Youhei Nakagawa
Application Number:
JP2006346053A
Publication Date:
February 08, 2012
Filing Date:
December 22, 2006
Export Citation:
Assignee:
Sanyo Electric Co., Ltd.
International Classes:
G02B3/00
Domestic Patent References:
| JP62135108U | ||||
| JP60051525U | ||||
| JP2002200654A | ||||
| JP2002286987A | ||||
| JP2000233945A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai