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Electronic endoscope

A lens and inner peripheral surface technology, applied in the fields of endoscopy, medical science, diagnosis, etc., can solve problems such as orientation and operation of difficult-to-dispose instruments

Active Publication Date: 2009-10-07
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Therefore, when the observation target displayed on the upper side in the field of view is smaller than the observation target displayed on the lower side in the field of view, it is difficult to orient the treatment instrument, and it is difficult to operate the treatment instrument.

Method used

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Examples

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Embodiment 1

[0069] refer to Figure 1 to Figure 30 Example 1 of the present invention will be described.

[0070] figure 1 The shown electronic endoscope system 1 is composed of the following parts, namely: an electronic endoscope 2, which constitutes Embodiment 1; a light source device 3, which is connected to the electronic endoscope 2 to supply illumination light; a video processor 5, it is connected with the electronic endoscope 2 through the scope cable 4, and is built-in to the imaging device 26 built in the electronic endoscope 2 (refer to Figure 4 ) a signal processing circuit for signal processing; and a monitor 6 for color-displaying an image signal input through a monitor cable connected to the video processor 5 on a display surface.

[0071] This electronic endoscope 2 has: an insertion part 7, which is inserted into a body cavity or the like, and is elongated and flexible; an operation part 8, which is formed on the base end side of the insertion part 7; and a universal co...

Embodiment 2

[0275] Refer below Figure 31 Example 2 of the present invention will be described. Figure 31 The configuration of the objective optical system portion of the imaging device in Embodiment 2 of the present invention is shown. In this embodiment, for example, the first lens 22a in the objective optical system 22 in Embodiment 1 is moved in a direction perpendicular to the axis of the lens system other than the first lens 22a to make the upper viewing angle θa larger than the lower viewing angle. θb is small.

[0276] That is, if Figure 31 As shown, the axis of the first lens 22a is moved in a direction perpendicular to the imaging optical axis O (set the moving distance to d, for example), which is the direction from the upper side of the viewing angle side (longitudinal direction of the insertion part 7). The rear side), that is, the direction in which the illumination lens 21 of the front end portion 11 is separated, is fixed to the lens frame 41 with an adhesive 60 . Th...

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Abstract

In this invention, a tip portion main body provided on the tip of the insertion portion has an erecting device disposed in the vicinity of the channel tip opening, capable of changing the protruding direction of the treatment tool, a solid-state image-capturing device, an objective optical system, having a predetermined field of view angle for capturing an image within the body cavity including the treatment tool protruding from the tip opening with a first field of view angle equating to the upper field of view angle during observation, and forms this image at the solid-state image-capturing device; and a second field of view angle equating to the lower field of view angle during observation, with the tip side of the insertion portion as the field of vision range, and the first field of view angle is set to be the same or smaller than the second field of view angle.

Description

[0001] This application is a divisional application of an invention patent application with an international filing date of July 5, 2005, an international application number of PCT / JP2005 / 012417, a national application number of 200580022848.3, and an invention title of "electronic endoscope". technical field [0002] The present invention relates to an electronic endoscope suitable for treatment using a treatment instrument. Background technique [0003] In recent years, electronic endoscopes equipped with solid-state imaging devices have been widely used in the medical field and the like. As a first prior electronic endoscope, for example, Japanese Unexamined Patent Application Publication No. 2003-230533 discloses an electronic endoscope having a side view or a rear oblique view as a viewing direction. [0004] In addition, for example, Japanese Unexamined Patent Application Publication No. 2004-72526, which is a second precedent example, discloses an electronic endoscope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/04A61B1/06G02B7/02
Inventor 三谷贵彦粂井一裕秋叶一芳酒井诚二一村博信河内昌宏
Owner OLYMPUS CORP
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