Title:
OCULAR OPTICAL SYSTEM AND FINDER OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/073027
Kind Code:
A1
Abstract:
Disclosed is an ocular optical system that: is constituted by at least five lens elements; comprises, in order from the display surface side to the emission side, a first lens group having negative power, a second lens group having positive power, and a third lens group having positive power; and is characterized in that said second lens group moves along the optical axis in order to adjust visibility. Also disclosed is a finder optical system characterized by comprising: a display element having a display surface on which an image is displayed; and said ocular optical system.
Inventors:
MIYAMOTO TOMOAKI
Application Number:
PCT/JP2012/007249
Publication Date:
May 15, 2014
Filing Date:
November 12, 2012
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
G02B25/00
Foreign References:
| JP2010237430A | 2010-10-21 | |||
| JP2009271385A | 2009-11-19 | |||
| JPH09329752A | 1997-12-22 | |||
| JP2000180920A | 2000-06-30 | |||
| JP2006227120A | 2006-08-31 |
Attorney, Agent or Firm:
OGASAWARA PATENT OFFICE (JP)
Patent business corporation Ogasawara patent firm (JP)
Patent business corporation Ogasawara patent firm (JP)
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