Title:
LENS ASSEMBLY, IMAGING APPARATUS AND ELECTRONIC APPARATUS
Document Type and Number:
Japanese Patent JP2019061180
Kind Code:
A
Abstract:
To provide a lens assembly capable of preventing degradation in optical characteristics and reduction in the yield due to insertion of a dimming part.SOLUTION: The lens assembly includes lenses 21 to 25 and a lens holder 10 holding the lenses 21 to 25. The lens holder 10 has a connecting part 33 that connects a first holding part 31 and a second holding part 32 so as to form an insertion space S where a diaphragm 51 can be inserted between a rear lens surface 22R of the second lens 22 and a front lens surface 23F of the third lens 23. The rear lens surface 22R of the second lens 22 includes an effective lens surface 61 and a guide surface 63 located radially outside the effective lens surface 61. The front lens surface 23F of the third lens 23 includes an effective lens surface 71 and a guide surface 73 located radially outside the effective lens surface 71. The guide surfaces 63, 73 are located closer to the insertion space S than any portions of the respective effective lens surfaces 61, 71.SELECTED DRAWING: Figure 9
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Inventors:
MURAYAMA TAKEHISA
KOMAKURA RYO
NIIYAMA HIDEKUNI
KOMAKURA RYO
NIIYAMA HIDEKUNI
Application Number:
JP2017187230A
Publication Date:
April 18, 2019
Filing Date:
September 27, 2017
Export Citation:
Assignee:
NIDEC COPAL CORP
International Classes:
G02B7/02; G03B9/00; G03B9/02; G03B9/08
Domestic Patent References:
| JP2017040814A | 2017-02-23 | |||
| JP2007271670A | 2007-10-18 | |||
| JP2010102313A | 2010-05-06 | |||
| JP2012093496A | 2012-05-17 |
Attorney, Agent or Firm:
Tomohiro Mori