Title:
PHOTODETECTOR DEVICE AND PHOTODETECTION METHOD, AND MICROSCOPE AND ENDOSCOPE
Document Type and Number:
WIPO Patent Application WO/2010/100745
Kind Code:
A1
Abstract:
Provided are a photodetector device and a photodetection method, with which the heterodyne detection of a desired light to be detected can be performed, in high sensitivity and at a high SN ratio, and, a microscope and an endoscope. The photodetector device comprises a local light emitting means (10) for emitting a local light having a plurality of optical frequency components within the optical frequency band of the detected light for a constant time period, an optical multiplexing means (20) for multiplexing the local light generated from the local light emitting means (10) and the detected light, and a photoelectric converting means (30) for photoelectrically converting the light outputted from the optical multiplexing means (20), to generate a beat signal of the local light and the detected light. The detected light is subjected to a heterodyne detection on the basis of the output of the photoelectric converting means (30).
Inventors:
TAIRA KENJI (JP)
YAJIMA HIROYOSHI (JP)
YAJIMA HIROYOSHI (JP)
Application Number:
PCT/JP2009/054187
Publication Date:
September 10, 2010
Filing Date:
March 05, 2009
Export Citation:
Assignee:
OLYMPUS CORP (JP)
TAIRA KENJI (JP)
YAJIMA HIROYOSHI (JP)
TAIRA KENJI (JP)
YAJIMA HIROYOSHI (JP)
International Classes:
G01J1/00; G01J11/00; G01N21/27; G01N21/64
Foreign References:
| JP2003090792A | 2003-03-28 | |||
| JPS6010612B2 | 1985-03-19 | |||
| JPH06165784A | 1994-06-14 | |||
| JPH08184502A | 1996-07-16 | |||
| JPH09297004A | 1997-11-18 | |||
| JP2003035660A | 2003-02-07 | |||
| JPH04156735A | 1992-05-29 | |||
| JPH0621868B2 | 1994-03-23 | |||
| JPH0721452B2 | 1995-03-08 |
Other References:
See also references of EP 2253945A4
Attorney, Agent or Firm:
SUGIMURA, Kenji et al. (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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