Title:
TOMOGRAPHIC IMAGE IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/016887
Kind Code:
A1
Abstract:
The present invention comprises: a light source; a modulator that modulates light; a frequency shifter; a reference reflector that reflects light; an optical path length changing unit that changes an optical path length; a measurement system detection unit including a first light detector and a first AD converter; a reference system detection unit including a second light detector and a second AD converter; a demodulator; and an analysis unit. The first light detector receives input of: light that has been reflected/scattered by an object to be measured; and light that has been reflected by the reference reflector through the frequency shifter and subjected to a change in optical path length by the optical path length changing unit. The second light detector receives input of: light that has been reflected by the reference reflector; and light that has been reflected by the reference reflector through the frequency shifter. The analysis unit analyzes a signal output by the demodulator and calculates the position of a reflection point of the object to be measured.
Inventors:
OGAWA HIROSHI (JP)
Application Number:
PCT/JP2017/026091
Publication Date:
January 24, 2019
Filing Date:
July 19, 2017
Export Citation:
Assignee:
OGAWA HIROSHI (JP)
International Classes:
G01N21/17
Foreign References:
| JP2007267761A | 2007-10-18 | |||
| JP2004132939A | 2004-04-30 | |||
| JPH04121642A | 1992-04-22 | |||
| JP2013160699A | 2013-08-19 |
Attorney, Agent or Firm:
TOU-OU PATENT FIRM (JP)
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