Title:
OPTICAL COMPONENTS, MANUFACTURING METHOD FOR THE SAME, AND CAMERA
Document Type and Number:
Japanese Patent JP2018004912
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an eyepiece with high-precision holder and a manufacturing method therefor.SOLUTION: In an eyepiece with holder configured of a lens 1 and a holder 2, one part 1121 of the holder 2 is in contact with a non-optical effective area 19 of the eyepiece-side lens face 3 of the lens 1, and the holder 2 further has a fixed part 202. The lens 1 is fixed to the holder 2 by the entrance of the convex part 117 of the lens 1 into the fixed part 202. The eyepiece with the holder is manufactured by outsert molding, and the mold shrinkage factor of the material constituting the holder 2 is smaller by 0.3% or more than the mold shrinkage factor of the material constituting the lens 1.SELECTED DRAWING: Figure 1
Inventors:
TOBITA KUNIAKI
Application Number:
JP2016130910A
Publication Date:
January 11, 2018
Filing Date:
June 30, 2016
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/02; B29C33/42; B29C45/14
Domestic Patent References:
| JP2014238573A | 2014-12-18 | |||
| JPS5248433U | 1977-04-06 | |||
| JP2008100481A | 2008-05-01 | |||
| JP2015058665A | 2015-03-30 | |||
| JP2014112227A | 2014-06-19 | |||
| JP2013205813A | 2013-10-07 |
Foreign References:
| WO2014084183A1 | 2014-06-05 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa