OPHTHALMIC EXAMINATION DEVICE

WIPO Patent Application WO/2014/167688

A1

[Problem] To provide an ophthalmic examination device which has a simpler configuration than prior art and does not necessitate complex adjustment. [Solution] After light emitted from a light source (12) is corrected into parallel ray by a collimator lens (16), the light enters into an entry face (20) of a liquid-crystal shutter (18). On the entry face (20) of the liquid-crystal shutter (18), a first pattern and a second pattern form alternately thereon, the first pattern being a pattern in which the entirety of the entry face (20) is in a transmissive state (maximum transmission rate), and the second pattern being a pattern in which only a certain small portion (20a) of the entry face (20) is in a blocking state (minimum transmission rate). The light which is transmitted through the entry face (20) of the liquid-crystal shutter (18) is projected via an enlargement optical assembly (24) upon a subject eye. Thus, video with uniform brightness across the whole of the field of view and video wherein only a target corresponding to the portion (20a) of the entry face (20) of the liquid-crystal shutter (18) is dark and omitted are presented alternately to the subject eye. That is, a flickering target is presented.

MATSUMOTO CHOTA (JP)
YUUKI HIROSHI (JP)

PCT/JP2013/060925

October 16, 2014

April 11, 2013

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SHINKO SEIKI COMPANY LTD (JP)
MATSUMOTO CHOTA (JP)

A61B3/02; A61B3/024

WO2009001458A1

2008-12-31

JP2012511344A	2012-05-24
JP2003235800A	2003-08-26
JP2006061461A	2006-03-09
JP2006340755A	2006-12-21
JP2004121707A	2004-04-22

KIMURA, MASATOSHI (JP)
Masatoshi Kimura (JP)

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