OPTICAL IMAGE MEASUREMENT DEVICE AND METHOD FOR CONTROLLING SAME

Title:

OPTICAL IMAGE MEASUREMENT DEVICE AND METHOD FOR CONTROLLING SAME

Document Type and Number:

WIPO Patent Application WO/2010/079550

Kind Code:

A1

Abstract:

Provided is an optical image measurement device which can clearly capture an OCT image in a plurality of depth bands and reduce the time required for capturing the image. The device divides a low-coherence light into a signal light and a reference light and switches the optical path length of the reference light into an optical path length corresponding to a first depth band or a second depth band. The device has an optical system for converging a signal light to the first depth band when an object to be measured and an objective lens are positioned at a predetermined work distance. When forming a tomogram of the second depth band, a depth band switching lens is inserted into the optical system so as to shift the depth for converging the signal light to the second depth band while maintaining the work distance.

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Inventors:

HAYASHI TAKEFUMI (JP)

Application Number:

PCT/JP2009/006672

Publication Date:

July 15, 2010

Filing Date:

December 07, 2009

Export Citation:

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Assignee:

TOPCON CORP (JP)
HAYASHI TAKEFUMI (JP)

International Classes:

A61B3/10; G01N21/17

Domestic Patent References:

WO2007065670A2

2007-06-14

Foreign References:

JP2008272256A	2008-11-13
JP2007037984A	2007-02-15
JPH10267610A	1998-10-09
JPH11325849A	1999-11-26
JP2002139421A	2002-05-17
JP2007024677A	2007-02-01
JP2006153838A	2006-06-15
JP2008073099A	2008-04-03
JPH09276232A	1997-10-28
JP2007037984A	2007-02-15
JPH11325849A	1999-11-26

Other References: