Battery-powered light source arrangement for endoscope
AssigneeFuji Photo Optical Co., Ltd.
InventorsSeiji Matsumoto, Etsuo Nakano, Suwao Sato
Life of this patent
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Abstract
A light source arrangement for a battery-powered light source unit of an endoscope comprises a cylindrical housing, a base disposed at one end of the housing, a plurality of LEDs connected to a flexible circuit board supported on the base and a focusing lens. A light guide for directing light emanating from the LEDs. The light guide comprises a reflective surface formed on an inner wall of the housing, a reflector having a concave reflective surface which is disposed at one end of the housing so as to surround the LEDs or a micro-lens array disposed in front of the LEDs with each micro lens aligned with the LED.
Claims17
A light source arrangement of an endoscope which has an illumination system, comprising:
- a battery;
- a generally cylindrically-shaped housing with a reflective coating layer applied to an inner wall thereof;
- a plurality of light emitting diodes electrically connected to the battery;
- a base disposed at a proximal end of said generally cylindrically-shaped housing for supporting said light emitting diodes thereon;
- light guide means for guiding light emanating from said light emitting diodes forward;
- and
- a focusing lens disposed on a distal end of said generally cylindrically-shaped housing for focusing said light at a specified point of the illumination system of the endoscope.
An endoscope comprising:
- a battery;
- an objective lens;
- a charge coupled device receiving an image formed by the objective lens;
- a signal processing circuit connected to receive an output of the charge coupled device;
- an encoder receiving an output of the signal processing circuit;
- a video display receiving an output of the encoder;
- a light source arrangement comprising:
- a generally cylindrically-shaped housing with a reflective coating layer applied to an inner wall;
- a plurality of light emitting diodes electrically connected to the battery;
- a base disposed at one end of said generally cylindrically-shaped housing for supporting said light emitting diodes thereon;
- light guide means for guiding light emanating from said light emitting diodes forward;
- and
- a focusing lens disposed on another end of said generally cylindrically-shaped housing for focusing said light at a specified point of the illumination system of the endoscope;
- wherein the battery provides power to the entire endoscope.
A light source arrangement of an endoscope which has an illumination system, comprising:
- a battery;
- a generally cylindrically-shaped housing with a reflective coating layer applied to an inner wall;
- a plurality of light emitting diodes arranged in a matrix and electrically connected to the battery;
- a base disposed at one end of said generally cylindrically-shaped housing for supporting said light emitting diodes thereon;
- a parabolic reflector arranged to surround an entirety of the light emitting diode matrix so that each said light emitting diode lies generally in a plane of a focal point of the parabolic reflector;
- a focusing lens disposed on another end of said generally cylindrically-shaped housing for focusing said light at a specified point of the illumination system of the endoscope.
Dependencies are inferred from the claim text.