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Image capturing unit and endoscope

A technology of camera unit and endoscope, applied in the field of camera unit and endoscope

Active Publication Date: 2016-07-06
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, as described above, the size of the imaging unit increases (larger diameter)

Method used

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  • Image capturing unit and endoscope
  • Image capturing unit and endoscope
  • Image capturing unit and endoscope

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0030] An example of the embodiment of the present invention will be described below. First, refer to figure 1 An example of the configuration of the endoscope 101 of the present invention will be described. The endoscope 101 according to the present embodiment has a structure capable of being introduced into a subject such as a human body and optically imaging a predetermined observation site in the subject. In addition, the subject into which the endoscope 101 is introduced is not limited to a human body, but may be other living bodies, or artificial objects such as machines or buildings.

[0031] The endoscope 101 of this embodiment is mainly composed of an elongated insertion part 102 introduced into the subject, an operation part 103 located at the proximal end of the insertion part 102, and a universal wire extending from the side of the operation part 103. cable 104.

[0032] The insertion part 102 is configured by continuously providing a distal end part 110 dispos...

no. 2 Embodiment approach

[0080] A second embodiment of the present invention will be described below. Hereinafter, only differences from the first embodiment will be described, and the same reference numerals will be given to the same components as those in the first embodiment, and descriptions thereof will be appropriately omitted.

[0081] The imaging unit 1 of this embodiment differs from the first embodiment in the arrangement position of the first light shielding member 4 . like Figure 12 As shown, the first light shielding member 4 of the present embodiment is fixed in contact with the front end surface of the protrusion 12 .

[0082] By arranging the first light shielding member 4 on the front end surface of the protrusion 12 as in the present embodiment, the first light shielding member 4 can shield the outside light at an angle incident on the inner wall surface 12c of the protrusion 12 .

[0083] In addition, the point that the first light shielding member 4 shields part of the out-of-vi...

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Abstract

This image capturing unit is provided with: an objective lens unit; oblong or square cover glass affixed on the light receiving surface of an image capturing element; a circular optical member attached to the front end surface of the cover glass and having a diameter smaller than the diagonal length of the cover glass; a holding frame having a circular fitting hole into which the optical member is fitted from behind and which is affixed to the objective lens unit; a protrusion protruding radially inward within the holding frame; a first light blocking member disposed in front of the optical member and blocking light present outside a visual field, the light being that reflected from the inner wall surface of the protrusion toward the inside of the pixel formed region of the image capturing element; and a second light blocking member disposed between the rear end surface of the optical member and the front end surface of the cover glass and blocking light present outside the visual field, the light being that reflected from the side surface of the optical member and propagating at an angle at which the light enters the pixel formed region.

Description

technical field [0001] The present invention relates to an imaging unit and an endoscope having an objective lens unit and an imaging element. Background technique [0002] In order to observe difficult-to-observe positions such as the inside of a living body or the inside of a structure, an endoscope having an imaging unit for taking an optical image in the front end of an insertion part that can be inserted into the inside from the outside of a living body or a structure, for example It is widely used in the medical field and industrial field. [0003] For example, as disclosed in Japanese Patent Application Laid-Open No. 10-146312, an imaging unit of an endoscope includes an objective lens unit for imaging a subject image and an imaging element arranged on an imaging surface of the objective lens unit. [0004] E.g Figure 13 As shown, in the imaging unit of the endoscope, a cover glass 23 that seals the light receiving surface 22 a is fixed to the light receiving surfac...

Claims

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Application Information

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IPC IPC(8): A61B1/00A61B1/04G02B7/02G02B13/00G02B23/24
CPCG02B7/02G02B23/243G02B23/2476G02B5/005A61B1/00096A61B1/05A61B1/00186A61B1/00A61B1/04G02B13/00G02B23/24H04N23/56H04N23/555A61B1/00114A61B1/0052A61B1/0676G02B23/2446
Inventor 酒井诚二
Owner OLYMPUS CORP
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