Capsule endoscope

Details Capsule endoscope Capsule endoscope

2005-02-15

2005-02-15

Leubecker, John P. (Department: 3739)

Surgery

Endoscope

Having imaging and illumination means

C600S160000, C600S177000, C348S068000

Reexamination Certificate

active

06855111

ABSTRACT:
A capsule endoscope is provided with lighting means for illuminating the interior of a living body, an image pickup means for capturing an image of a site illuminated by the lighting means, and a transparent cover which houses the image pickup means and the lighting means within a sealed, cylindrical-shaped capsule case. The image pickup means includes an objective optical system having a depth of field. An object within the depth of field of the objective optical system is illuminated more evenly than possible with a single lighting means by arranging multiple lighting means at the periphery of the objective optical system and causing the beams from individual lighting means to overlap in specified ways so that a nearly uniform illumination of an object of interest is achieved. Light diffusers may be employed to diffuse the light from the light sources, and a color correction filter may be used.

REFERENCES:
patent: 4272156 (1981-06-01), Ishibashi et al.
patent: 6251068 (2001-06-01), Akiba et al.
patent: 20020068853 (2002-06-01), Adler
patent: 20030120130 (2003-06-01), Glukhovsky et al.
patent: 20030130562 (2003-07-01), Barbato et al.
patent: 20040171914 (2004-09-01), Avni
patent: 2001-91860 (2001-04-01), None
patent: WO 0076391 (2000-12-01), None

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