Light source apparatus and endoscope system

An endoscope and equipment technology, applied in the field of endoscope systems, can solve problems such as difficulty in visual recognition of objects

Inactive Publication Date: 2014-01-22
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Visual recognition of the object of interest will be difficult under conditions of such large differences in the amount of light

Method used

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  • Light source apparatus and endoscope system
  • Light source apparatus and endoscope system
  • Light source apparatus and endoscope system

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0081] exist figure 1 In the example, an endoscope system 10 includes an endoscope 11 , a processing device 12 , a light source device 13 and a monitor display panel 14 . The endoscope 11 images a subject in a body cavity, and generates image signals. The processing device 12 generates an object image from the image signal. The light source device 13 supplies the endoscope 11 with light for illuminating a subject. The display panel 14 displays images. The input interface 15 (console unit) for the processing device 12 includes various elements such as a keyboard, a mouse, and the like.

[0082] Endoscopic system 10 is operable in a normal imaging mode (color imaging mode) and a special imaging mode. In normal imaging mode, the object of interest is imaged with white light. In a special imaging mode, special light is used to image blood vessels in the region of interest. In special imaging modalities, patterns of blood vessels or oxygen saturation levels are identified to...

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PUM

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Abstract

A light source apparatus for supplying a light guide device incorporated in an endoscope with a light beam is provided. A light emitting device of semiconductor, for example, laser diode generates the light beam. A light homogenizer homogenizes irradiance distribution of the light beam in a radial direction. A short focus lens is disposed between the light homogenizer and the light guide device, for enlarging a divergence angle of the light beam. Furthermore, the light homogenizer is a transparent light guide rod disposed to extend in an optical axis direction of the light beam. A diameter of the light homogenizer is constant in an optical axis direction thereof. The diameter of the light homogenizer is equal to or less than a diameter of the short focus lens.

Description

technical field [0001] The present invention relates to a light source device and an endoscope system. More particularly, the present invention relates to a light source device and an endoscope system in which an area illuminated with a light beam from a light source unit can be enlarged and a difference in light quantity between the center and the periphery can be reduced. Background technique [0002] Endoscope systems for diagnosis of body cavities are widely used in the medical field. An endoscope system includes an endoscope, a light source device, and a processing device. An endoscope includes an elongated tube and a tip. The elongated tube enters the body cavity. The tip device is disposed at the distal end of the elongated tube, images a subject in the body cavity, and outputs image signals. The light source device supplies the endoscope with light for illumination. The processing device processes image signals output by the endoscope. An illumination window an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/00
CPCA61B1/063A61B1/0646A61B1/0669A61B1/0684A61B1/0653A61B1/00195F21V33/0068
Inventor 大桥永治森本美范井上敏之
Owner FUJIFILM CORP
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