Title:
焦点検出装置および光学機器
Document Type and Number:
Japanese Patent JP5725958
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To achieve a large area and a thin shape of a rectangular lens formed by a glass molding method in a focus detector.SOLUTION: The focus detector includes: a lens block 213 formed by a glass molding method; a device body 400 for positioning and holding the lens block; and a light receiving element 215 for converting an optical image formed by an image forming lens into an electric signal. The lens block includes a lens reference surface 306, first positioning surfaces 301L and 301R, second positioning surfaces 303L and 303R, and a first projected part 302 as a wall part of an outer periphery. The lens block further includes, in an area inside the outer peripheral part and adjacent to a boundary between the first positioning surface in the outer peripheral part and the first projected part in an optical axis direction, second projected parts 305L and 305R as wall parts projecting more in the optical axis direction than the lens reference surface.
Inventors:
Hideyuki Hamano
Application Number:
JP2011095919A
Publication Date:
May 27, 2015
Filing Date:
April 22, 2011
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B7/34; G03B13/36; H04N5/225; H04N5/232
Domestic Patent References:
| JP2009164654A | ||||
| JP9126757A | ||||
| JP2007144761A | ||||
| JP2006256906A | ||||
| JP2000015676A | ||||
| JP2003043349A | ||||
| JP2003140028A | ||||
| JP62186108U | ||||
| JP2007039262A |
Foreign References:
| WO2007125761A1 | ||||
| WO2008023798A1 |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya
Previous Patent: 架橋ポリオレフィン系発泡体の製造方法
Next Patent: DOUBLE PRINTER FOR SCREEN PRINTING AND FOIL PRESSING
Next Patent: DOUBLE PRINTER FOR SCREEN PRINTING AND FOIL PRESSING