Endoscope with optical fiber and fiber optics system

Details Endoscope with optical fiber and fiber optics system Endoscope with optical fiber and fiber optics system

2007-01-02

2009-02-24

Wood, Kevin S (Department: 2874)

Optical waveguides

Optical fiber bundle

Imaging

C385S902000, C600S182000

Reexamination Certificate

active

07496259

ABSTRACT:
An endoscope has an optical fiber and at least one photo-detector. The optical fiber has a core that transmits illuminating light and at least one cladding that surrounds the core and transmits reflected light. The cladding has a refraction slope surface that is tapered toward a direction opposite the tip portion of the optical fiber. The photo-detector detects the reflected light that exits from the refraction slope surface by refraction.

REFERENCES:
patent: 5926592 (1999-07-01), Harris et al.
patent: 6788861 (2004-09-01), Utsui et al.
patent: 2006/0186325 (2006-08-01), Johnston et al.
patent: 2006/096155 (2006-09-01), None
Barhoum et al., “Optical modeling of an ultrathin scanning fiber endoscope, a preliminary study of confocal versus non-confocal detection,” Optics Express vol. 13, No. 19, pp. 7548-7562, Sep. 19, 2005.
U.S. Appl. No. 11/464,319 to Karasawa, filed Aug. 14, 2006.
U.S. Appl. No. 11/421,629 to Karasawa, filed Jun. 1, 2006.
U.S. Appl. No. 11/427,219 to Karasawa, filed Jun. 28, 2006.

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