Title:
Photosensor
Document Type and Number:
Japanese Patent JP6120336
Kind Code:
B2
Abstract:
A device comprising measurement (7) and reference (3) interferometers is disclosed. Each interferometer is configured to receive light from the same light source (1) and to emit light to respective detectors (6) and has a respective operating point. The measurement interferometer (7) is configured to respond to variations in a physical parameter by varying the intensity of light emitted, whereas the reference interferometer (3) is configured to be unresponsive to variations in the physical parameter. The device further comprises a signal processor for generating a differential output signal depending on respective output signals generated by the detectors (6).
Inventors:
Fischer, Baltazar
Lining, friedrich
Vintner, Ernst
Lining, friedrich
Vintner, Ernst
Application Number:
JP2014510796A
Publication Date:
April 26, 2017
Filing Date:
May 16, 2012
Export Citation:
Assignee:
XARION Laser Acoustics GmbH
International Classes:
G01B9/02; G01B11/16; G01N21/45; H04R23/00
Domestic Patent References:
| JP11063914A | ||||
| JP2002054910A | ||||
| JP2009231316A |
Foreign References:
| US20050146726 | ||||
| US20070165238 |
Attorney, Agent or Firm:
Patent business corporation Kita Aoyama International