Title:
SMALL PACKAGED SPECTROSCOPIC SENSOR UNIT
Document Type and Number:
WIPO Patent Application WO/2003/091676
Kind Code:
A1
Abstract:
A small packaged spectroscopic sensor unit in which light transmitted an object to be inspected enters an optical fiber and is subjected to spectroscopic analysis in order to measure and inspect the internal quality or components of the object. The spectroscopic sensor unit comprises a light diffuser for stranding an optical fiber bundle passing only light within an incident angle such that spots of incident light from its light receiving face are distributed uniformly on the outgoing light side and holding it by a shaping and sustaining holder such that the shape of the outgoing light face of the optical fiber bundle matches the size of the incident side end face of the light diffuser and the light receiving face of a photoelectric conversion element and further diffusing and transmitting light from the outgoing light face of the optical fiber bundle, a continuous variable interference filter provided on the outgoing light end face of the light diffuser, and the photoelectric conversion element disposed continuously to the continuous variable interference filter, wherein the optical paths of the optical fiber bundle, the light diffuser and the continuous variable interference filter are aligned and they are held hermetically in a package while being sealed.
Inventors:
MAEDA HIROMU (JP)
MIZUNO TOSHIHIRO (JP)
MIZUNO TOSHIHIRO (JP)
Application Number:
PCT/JP2002/004036
Publication Date:
November 06, 2003
Filing Date:
April 23, 2002
Export Citation:
Assignee:
MAEDA HIROMU (JP)
MIZUNO TOSHIHIRO (JP)
MIZUNO TOSHIHIRO (JP)
International Classes:
G01J3/02; G01J3/26; G01J3/28; G01J3/36; G01J3/45; (IPC1-7): G01J3/45; G01J3/36
Foreign References:
| JPH09508291A | 1997-08-26 | |||
| JP2000283847A | 2000-10-13 | |||
| JP2001349781A | 2001-12-21 | |||
| JP2002022938A | 2002-01-23 | |||
| JPH11194091A | 1999-07-21 | |||
| JPS62267624A | 1987-11-20 | |||
| JPS6457314A | 1989-03-03 | |||
| JPS57151830A | 1982-09-20 |
Other References:
See also references of EP 1498708A4
Attorney, Agent or Firm:
Kanoh, Akira (No.19-1 1-chome, Kanda-Awaji-ch, Chiyoda-ku Tokyo, JP)
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