Title:
LENS UNIT
Document Type and Number:
WIPO Patent Application WO/2018/186103
Kind Code:
A1
Abstract:
This lens unit has: a cylindrical lens barrel formed from a resin material which contains inorganic fibers; and contained components including a plurality of lenses contained in the lens barrel while being arranged side by side in the optical axis direction, at least one of the lenses being formed from a resin material. The amount of thermal expansion of the lens barrel in the optical axis direction is set equal to the sum of the amounts of thermal expansion of the contained components in the optical axis direction, or the amount of thermal expansion of the lens barrel in the direction perpendicular to the optical axis direction is set equal to the amount of the thermal expansion, in the direction perpendicular to the optical axis direction, of the lens formed from the resin material.
Inventors:
YOSHIDA DAIKI (JP)
Application Number:
PCT/JP2018/009031
Publication Date:
October 11, 2018
Filing Date:
March 08, 2018
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B7/02; G02B13/00; G03B15/00; G03B17/02
Foreign References:
| JP2008304642A | 2008-12-18 | |||
| JP2016118607A | 2016-06-30 | |||
| JP2016109959A | 2016-06-20 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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