JP2004321478A - White balance regulating device for electronic endoscope - Google Patents

White balance regulating device for electronic endoscope Download PDF

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Publication number
JP2004321478A
JP2004321478A JP2003120240A JP2003120240A JP2004321478A JP 2004321478 A JP2004321478 A JP 2004321478A JP 2003120240 A JP2003120240 A JP 2003120240A JP 2003120240 A JP2003120240 A JP 2003120240A JP 2004321478 A JP2004321478 A JP 2004321478A
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white balance
electronic endoscope
balance adjuster
white
cylindrical portion
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JP4360828B2 (en
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Ichiro Ninomiya
一郎 二ノ宮
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Pentax Corp
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Pentax Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00057—Operational features of endoscopes provided with means for testing or calibration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/045—Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control

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  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Veterinary Medicine (AREA)
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  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Image Signal Generators (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a white balance regulating device for an electronic endoscope with which the white balance can be regulated in an appropriate condition when a distal end of an insertion part approaches too close to the inside surface of the white balance regulating device or illumination light from the insertion part is too strong. <P>SOLUTION: The white balance regulating device is constituted as a cylinder with a bottom having a cylindrical section in which the insertion part of the endoscope emitting the illuminating light is inserted and a bottom section which closes one end of the cylindrical section, wherein all of the inside surface is opaque white and all of the inside surface is a diffused reflection surface. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【技術分野】
本発明は、電子内視鏡用ホワイトバランス調整具に関する。
【０００２】
【従来技術及びその問題点】
挿入部の先端部の照明光学系から光を照射する電子内視鏡を、プロセッサとテレビモニタに接続し、患部等の被写体をカラー撮像する場合は、通常、良好なカラー画面を得るためにホワイトバランスの調整を行なっている。
【０００３】
ホワイトバランス調整のためのホワイトバランス調整具としては、例えば、一端が開口し他端が閉塞する筒状をなし、その内面全体が不透明な白色となっているものがある（例えば、特許文献１）。
【０００４】
このホワイトバランス調整具に、電子内視鏡の挿入部の先端部を挿入して、挿入部の先端から照明光を照射し、プロセッサに設けられたホワイトバランススイッチをＯＮにすると、プロセッサがホワイトバランスの調整を行なう。
【０００５】
しかし、このホワイトバランス調整具の内面には乱反射防止処理が施されていないため、挿入部の先端部がホワイトバランス調整具の内面に近づきすぎた場合や、挿入部からの照明光が強すぎた場合には、上記内面からの反射光が強くなりすぎ、電子内視鏡に内蔵されたＣＣＤで撮像した観察像にハレーションが発生し、適正な状態でホワイトバランスの調整を行えないことがあった。
【０００６】
【特許文献１】
特開平４−６９６１５号公報
【０００７】
【発明の目的】
本発明は、挿入部の先端部がホワイトバランス調整具の内面に近づきすぎた場合や、挿入部からの照明光が強すぎる場合にも、適正な状態でホワイトバランスの調整を行うことが可能な電子内視鏡用ホワイトバランス調整具を提供することを目的とする。
【０００８】
【発明の概要】
本発明の電子内視鏡用ホワイトバランス調整具は、照明光を発する電子内視鏡の挿入部が挿入される筒状部と、該筒状部の一端を閉塞する底部とを有する有底筒状をなし、その内面全体が不透光性の白色をなすホワイトバランス調整具において、その内面全体を乱反射面としたことを特徴としている。
【０００９】
上記乱反射面は、微細凹凸面とするのが実際的である。
【００１０】
さらに、上記底部内面と筒状部内面とが滑らかなＲ面で接続されており、該滑らかなＲ面上に、白色以外の塗料で筒状部の内径より小径の環状指標が描かれているのが良い。
【００１１】
また、上記底部内面と筒状部内面とを接続する接続面上に、筒状部の内径より小径のナイフエッジ状の環状指標を形成してもよい。
【００１２】
【発明の実施の形態】
以下、本発明を電子内視鏡１０に適用した一実施形態について説明する。
図１に示す電子内視鏡１０は、操作部１１と挿入部１２を有し、挿入部１２の先端部は、操作部１１に設けた湾曲操作装置１３の操作に応じて上下及び左右方向に湾曲される湾曲部１２ａとなっている。操作部１１からはユニバーサルチューブ１４が延びており、このユニバーサルチューブ１４の先端に設けられたコネクタ部１４ａが、画像処理回路や光源等（いずれも図示略）が内蔵されたプロセッサ１５に接続可能となっている。
挿入部１２の先端面には、図示しない観察窓（対物窓）と照明光学系が設けられており、挿入部１２の先端部内には、観察窓の直後に位置させて結像レンズとＣＣＤ（いずれも図示略）が配設されており、ＣＣＤからは画像信号用ケーブル（図示略）が後方に向かって延びており、この画像信号ケーブルの後端部はコネクタ部１４ａまで達している。
コネクタ部１４ａには、プロセッサ１５の差込穴（図示略）に差し込み可能な光源差込用端部１６が突設されており、電子内視鏡１０の内部には、この光源差込用端部１６から照明光学系の直後にわたってライトガイドファイババンドル１７が配設されている。
【００１３】
電子内視鏡１０の光源差込用端部１６を、プロセッサ１５の差込穴に差し込むと、光源の直前にライトガイドファイババンドル１７の入射端面が位置するので、この状態でプロセッサ内の光源を発光させると、光源から発せられた光が、ライトガイドファイババンドル１７を介して照明光学系に与えられ、挿入部１２先端の観察窓を介して得られる画像が、プロセッサ１５に接続されたテレビモニタ（図示略）に映し出される。
【００１４】
このようにテレビモニタに映し出されたカラー画像を良好なものとするためには、図２乃至図８に示すホワイトバランス調整具１８を用いて、ホワイトバランス調整を行う必要がある。
【００１５】
ホワイトバランス調整具１８は、例えば不透光性の白色プラスチック樹脂により一体成形されたものであり、円形筒状の筒状部１９ａと、この筒状部１９ａの一端を閉塞する底部１９ｂと、筒状部１９ａから延出するとともに通孔２０が穿設された取付片２１とを具備している。
そして、このホワイトバランス調整具１８を成形する際に、筒状部１９ａの内部に嵌合する金型（図示略）の表面には微細な凹凸が形成されているため、筒状部１９ａの内面（筒状部内面）と底部１９ｂの内面（底部内面）の全体は、微細凹凸面（乱反射面）となっており、筒状部１９ａと底部１９ｂの内面１９ａ１、１９ｂ１は実質的に艶消し面となっている。さらに、筒状部１９ａと底部１９ｂの内面１９ａ１、１９ｂ１の接続部である環状接続部１９ｃの断面形状は、図６乃至図８に示すように滑らかなＲ面となっており、この環状接続部１９ｃには環状凸部（環状指標）１９ｄが形成されている。
【００１６】
このホワイトバランス調整具１８は、例えば、図４及び図７に示すように、筒状部１９ａの開口側を下向きにした状態で、その取付片２１の通孔２０に挿通した頭付きねじ２２を、床面上を移動可能なワゴンの天板２３の側面に穿設された雌ねじ孔２３ａ（図７参照）に螺合することにより、ワゴンの天板２３に固定される。
【００１７】
そして、ホワイトバランス調整具１８を天板２３に固定した状態で、電子内視鏡１０の挿入部１２の先端部を、その先端の照明光学系から照明光を発した状態で、下方から筒状部１９ａ内に挿入すると、テレビモニタに筒状部１９ａと底部１９ｂの内面１９ａ１、１９ｂ１の様子が映し出される。そして、プロセッサ１５に設けられたホワイトバランススイッチ（図示略）をＯＮにすると、プロセッサ１５がホワイトバランス調整を行なう。
【００１８】
この際、挿入部１２の先端がホワイトバランス調整具１８の内面１９ａ１、１９ｂ１に近づきすぎたり、挿入部１２からの照明光が強すぎても、本実施形態のホワイトバランス調整具１８の筒状部１９ａと底部１９ｂの内面１９ａ１、１９ｂ１全体は、乱反射効果を有する微細凹凸面となっているので、照明光は内面１９ａ１、１９ｂ１によって乱反射され、反射光が必要以上に強くなることはない。このため、電子内視鏡１０に内蔵されたＣＣＤで撮像した観察像にハレーションが発生することはなく、常に適正な状態でホワイトバランス調整を行うことができる。
【００１９】
さらに、筒状部１９ａと底部１９ｂの内面１９ａ１、１９ｂ１を乱反射面とし、加えて、環状接続部１９ｃの断面形状をＲ面としているが、本実施形態では、環状接続部１９ｃに指標となる環状凸部１９ｄを形成してあるため、作業者がテレビモニタを見たときに、筒状部１９ａと底部１９ｂの内面１９ａ１、１９ｂ１の区別がつかなくなることはない。このため、作業者は、この環状凸部１９ｄを目安に、挿入部１２の先端と底部１９ｂの内面１９ｂ１との距離感を容易につかむことができる。従って、作業者は、挿入部１２の先端と底部１９ｂの内面１９ｂ１との距離を適正な距離にすることができ、その結果、正確なホワイトバランス調整が可能となる。
【００２０】
なお、本実施形態では、環状指標を環状凸部１９ｄとしたが、環状凹部（図示略）としたり、指標を白色以外の塗料で描いた環状指標としてもよい。
さらに、筒状部１９ａと底部１９ｂは不透光性材料によって成形されているが、さらに、筒状部１９ａと底部１９ｂの外周面全体に不透光性の塗料（図示略）を塗ったり、不透光性材料からなるカバー（図示略）を被せれば、外部の光が筒状部１９ａと底部１９ｂを透過するのをより確実に防止できるようになる。
【００２１】
【発明の効果】
本発明によれば、挿入部の先端部がホワイトバランス調整具の内面に近づきすぎた場合や、挿入部からの照明光が強すぎる場合にも、適正な状態でホワイトバランスの調整を行うことが可能となる。
【図面の簡単な説明】
【図１】本発明の一実施形態の全体構造を示す外観図である。
【図２】ホワイトバランス調整具の正面図である。
【図３】ホワイトバランス調整具の平面図である。
【図４】ホワイトバランス調整具を天板に固定した状態を示す側面図である。
【図５】ホワイトバランス調整具の拡大底面図である。
【図６】図４のＶＩ−ＶＩ線に沿う縦断正面図である。
【図７】図４の縦断側面図である。
【図８】ホワイトバランス調整具の上部の拡大縦断側面図である。
【符号の説明】
１０ 電子内視鏡
１１ 操作部
１２ 挿入部
１２ａ 湾曲部
１３ 湾曲操作装置
１４ ユニバーサルチューブ
１４ａ コネクタ部
１５ プロセッサ
１６ 光源差込用端部
１７ ライトガイドファイババンドル
１８ ホワイトバランス調整具
１９ａ 筒状部
１９ａ１ 内面（筒状部内面）（乱反射面）（微細凹凸面）
１９ｂ 底部
１９ｂ１ 内面（底部内面）（乱反射面）（微細凹凸面）
１９ｃ 環状接続部
１９ｄ 環状凸部（環状指標）
２０ 通孔
２１ 取付片
２２ 頭付きねじ
２３ 天板
２３ａ 雌ねじ孔[0001]
【Technical field】
The present invention relates to a white balance adjuster for an electronic endoscope.
[0002]
[Prior art and its problems]
When an electronic endoscope that irradiates light from the illumination optical system at the distal end of the insertion section is connected to a processor and a TV monitor, and a color image of a subject such as an affected part is taken, a white image is usually obtained to obtain a good color screen. The balance is being adjusted.
[0003]
As a white balance adjusting device for white balance adjustment, for example, there is a white balance adjusting device having a cylindrical shape whose one end is open and the other end is closed, and whose entire inner surface is opaque white (for example, Patent Document 1). .
[0004]
When the distal end of the insertion section of the electronic endoscope is inserted into this white balance adjuster, illumination light is emitted from the distal end of the insertion section, and the white balance switch provided on the processor is turned on, the processor causes white balance. Make adjustments.
[0005]
However, since the anti-reflection treatment has not been performed on the inner surface of this white balance adjuster, the tip of the insertion portion was too close to the inner surface of the white balance adjuster, or the illumination light from the insert was too strong. In this case, the reflected light from the inner surface becomes too strong, and the observed image picked up by the CCD built in the electronic endoscope may cause halation, and the white balance may not be adjusted properly. .
[0006]
[Patent Document 1]
JP-A-4-69615
[Object of the invention]
The present invention can adjust the white balance in an appropriate state even when the distal end of the insertion portion is too close to the inner surface of the white balance adjuster or when the illumination light from the insertion portion is too strong. An object of the present invention is to provide a white balance adjuster for an electronic endoscope.
[0008]
Summary of the Invention
A white balance adjuster for an electronic endoscope according to the present invention is a bottomed cylinder having a tubular portion into which an insertion portion of an electronic endoscope that emits illumination light is inserted, and a bottom portion that closes one end of the tubular portion. A white balance adjuster having an inner surface having an opaque white color, wherein the entire inner surface is a diffuse reflection surface.
[0009]
It is practical that the irregular reflection surface is a fine uneven surface.
[0010]
Further, the bottom inner surface and the cylindrical portion inner surface are connected by a smooth R surface, and on the smooth R surface, an annular index having a diameter smaller than the inner diameter of the cylindrical portion is drawn with a paint other than white. Is good.
[0011]
Further, a knife-edge-shaped annular index having a diameter smaller than the inner diameter of the tubular portion may be formed on a connection surface connecting the inner surface of the bottom portion and the inner surface of the tubular portion.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to an electronic endoscope 10 will be described.
The electronic endoscope 10 shown in FIG. 1 has an operation unit 11 and an insertion unit 12, and the distal end of the insertion unit 12 moves in the vertical and horizontal directions according to the operation of a bending operation device 13 provided in the operation unit 11. The curved portion 12a is curved. A universal tube 14 extends from the operation unit 11, and a connector 14a provided at the tip of the universal tube 14 can be connected to a processor 15 having an image processing circuit, a light source, and the like (both not shown). Has become.
An observation window (objective window) and an illumination optical system (not shown) are provided on the distal end surface of the insertion section 12, and the imaging lens and the CCD (not shown) are located in the distal end section of the insertion section 12 immediately after the observation window. An image signal cable (not shown) extends rearward from the CCD, and the rear end of the image signal cable reaches the connector 14a.
A light source insertion end 16 that can be inserted into an insertion hole (not shown) of the processor 15 protrudes from the connector section 14a, and the light source insertion end is provided inside the electronic endoscope 10. A light guide fiber bundle 17 is provided from the section 16 to immediately after the illumination optical system.
[0013]
When the light source insertion end 16 of the electronic endoscope 10 is inserted into the insertion hole of the processor 15, the incident end face of the light guide fiber bundle 17 is located immediately before the light source. When the light is emitted, the light emitted from the light source is given to the illumination optical system via the light guide fiber bundle 17, and an image obtained through the observation window at the tip of the insertion section 12 is displayed on a television monitor connected to the processor 15. (Not shown).
[0014]
In order to improve the color image projected on the television monitor in this way, it is necessary to perform white balance adjustment using the white balance adjuster 18 shown in FIGS.
[0015]
The white balance adjuster 18 is integrally formed of, for example, an opaque white plastic resin, and has a cylindrical portion 19a having a circular cylindrical shape, a bottom portion 19b for closing one end of the cylindrical portion 19a, and a cylindrical portion. And a mounting piece 21 extending from the shape 19a and having a through hole 20 formed therein.
When the white balance adjuster 18 is formed, since a fine unevenness is formed on the surface of a mold (not shown) fitted inside the tubular portion 19a, the inner surface of the tubular portion 19a is formed. The entire inner surface of the (cylindrical portion) and the inner surface of the bottom portion 19b (the inner surface of the bottom portion) is a fine uneven surface (diffuse reflection surface). It has become. Further, as shown in FIGS. 6 to 8, the cross-sectional shape of the annular connecting portion 19c which is a connecting portion between the cylindrical portion 19a and the inner surfaces 19a1 and 19b1 of the bottom portion 19b has a smooth R surface. An annular projection (annular index) 19d is formed on 19c.
[0016]
For example, as shown in FIGS. 4 and 7, the white balance adjusting tool 18 has a headed screw 22 inserted into the through hole 20 of the mounting piece 21 with the opening side of the cylindrical portion 19 a facing downward. The wagon is fixed to the wagon top plate 23 by screwing into a female screw hole 23a (see FIG. 7) formed in a side surface of the wagon top plate 23 movable on the floor surface.
[0017]
Then, with the white balance adjuster 18 fixed to the top plate 23, the distal end of the insertion section 12 of the electronic endoscope 10 is cylindrically shaped from below with illumination light emitted from the illumination optical system at the distal end. When inserted into the portion 19a, the state of the cylindrical portion 19a and the inner surfaces 19a1 and 19b1 of the bottom portion 19b are displayed on the television monitor. Then, when a white balance switch (not shown) provided in the processor 15 is turned on, the processor 15 performs white balance adjustment.
[0018]
At this time, even if the distal end of the insertion portion 12 is too close to the inner surfaces 19a1 and 19b1 of the white balance adjustment device 18, or if the illumination light from the insertion portion 12 is too strong, the cylindrical portion of the white balance adjustment device 18 of the present embodiment. Since the entire inner surfaces 19a1 and 19b1 of the base 19a and the bottom portion 19b are fine uneven surfaces having an irregular reflection effect, the illumination light is irregularly reflected by the inner surfaces 19a1 and 19b1, and the reflected light does not become unnecessarily strong. For this reason, no halation occurs in the observation image picked up by the CCD built in the electronic endoscope 10, and the white balance can always be adjusted in an appropriate state.
[0019]
Furthermore, although the inner surfaces 19a1 and 19b1 of the cylindrical portion 19a and the bottom portion 19b are irregularly-reflected surfaces, and the cross-sectional shape of the annular connection portion 19c is an R surface, in this embodiment, the annular connection portion 19c serves as an index. Since the convex portion 19d is formed, when the operator watches the television monitor, the cylindrical portion 19a and the inner surfaces 19a1 and 19b1 of the bottom portion 19b do not become indistinguishable. For this reason, the operator can easily grasp the sense of distance between the tip of the insertion portion 12 and the inner surface 19b1 of the bottom portion 19b using the annular projection 19d as a guide. Therefore, the operator can make the distance between the tip of the insertion portion 12 and the inner surface 19b1 of the bottom portion 19b an appropriate distance, and as a result, accurate white balance adjustment becomes possible.
[0020]
In the present embodiment, the annular index is the annular convex portion 19d, but may be an annular concave portion (not shown) or an annular index drawn with a paint other than white.
Further, although the cylindrical portion 19a and the bottom portion 19b are formed of an opaque material, the entire outer peripheral surfaces of the cylindrical portion 19a and the bottom portion 19b are coated with an opaque paint (not shown). If a cover (not shown) made of an opaque material is covered, it is possible to more reliably prevent external light from transmitting through the cylindrical portion 19a and the bottom portion 19b.
[0021]
【The invention's effect】
According to the present invention, it is possible to adjust the white balance in an appropriate state even when the distal end portion of the insertion portion is too close to the inner surface of the white balance adjuster or when the illumination light from the insertion portion is too strong. It becomes possible.
[Brief description of the drawings]
FIG. 1 is an external view showing the entire structure of an embodiment of the present invention.
FIG. 2 is a front view of a white balance adjuster.
FIG. 3 is a plan view of a white balance adjuster.
FIG. 4 is a side view showing a state in which the white balance adjuster is fixed to a top plate.
FIG. 5 is an enlarged bottom view of the white balance adjuster.
FIG. 6 is a vertical sectional front view taken along the line VI-VI of FIG. 4;
FIG. 7 is a longitudinal sectional side view of FIG. 4;
FIG. 8 is an enlarged vertical sectional side view of an upper portion of the white balance adjuster.
[Explanation of symbols]
Reference Signs List 10 electronic endoscope 11 operation unit 12 insertion unit 12a bending unit 13 bending operation device 14 universal tube 14a connector unit 15 processor 16 light source insertion end unit 17 light guide fiber bundle 18 white balance adjustment tool 19a cylindrical unit 19a1 inner surface ( Inner surface of cylindrical part) (Diffuse reflection surface) (Fine irregular surface)
19b Bottom 19b1 Inner surface (bottom inner surface) (irregular reflection surface) (fine irregular surface)
19c annular connecting portion 19d annular convex portion (annular index)
Reference Signs List 20 through hole 21 mounting piece 22 headed screw 23 top plate 23a female screw hole

Claims (4)

照明光を発する電子内視鏡の挿入部が挿入される筒状部と、該筒状部の一端を閉塞する底部とを有する有底筒状をなし、その内面全体が不透光性の白色をなすホワイトバランス調整具において、
その内面全体を乱反射面としたことを特徴とする電子内視鏡用ホワイトバランス調整具。It has a bottomed tubular shape having a tubular portion into which an insertion portion of an electronic endoscope that emits illumination light is inserted, and a bottom portion closing one end of the tubular portion, and the entire inner surface thereof is opaque white. The white balance adjustment tool
A white balance adjuster for an electronic endoscope, wherein the entire inner surface is a diffuse reflection surface. 請求項１記載の電子内視鏡用ホワイトバランス調整具において、上記乱反射面が、微細凹凸面である電子内視鏡用ホワイトバランス調整具。2. The white balance adjuster for an electronic endoscope according to claim 1, wherein the irregular reflection surface is a fine uneven surface. 請求項１または２記載の電子内視鏡用ホワイトバランス調整具において、上記底部内面と筒状部内面とが滑らかなＲ面で接続されており、該滑らかなＲ面上に、白色以外の塗料で筒状部の内径より小径の環状指標が描かれている電子内視鏡用ホワイトバランス調整具。3. The white balance adjuster for an electronic endoscope according to claim 1, wherein the inner surface of the bottom portion and the inner surface of the cylindrical portion are connected by a smooth R surface, and a non-white paint is applied on the smooth R surface. A white balance adjuster for an electronic endoscope in which an annular index smaller than the inner diameter of the cylindrical portion is drawn. 請求項１または２記載の電子内視鏡用ホワイトバランス調整具において、上記底部内面と筒状部内面とを接続する接続面上に、筒状部の内径より小径のナイフエッジ状の環状指標が形成されている電子内視鏡用ホワイトバランス調整具。3. The white balance adjuster for an electronic endoscope according to claim 1, wherein a knife-edge-shaped annular index having a diameter smaller than an inner diameter of the cylindrical portion is provided on a connection surface connecting the inner surface of the bottom portion and the inner surface of the cylindrical portion. A formed white balance adjuster for electronic endoscopes.
JP2003120240A 2003-04-24 2003-04-24 White balance adjuster for electronic endoscope Expired - Fee Related JP4360828B2 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006223591A (en) * 2005-02-17 2006-08-31 Olympus Corp Color balance adjusting device for endoscope
JP2006325690A (en) * 2005-05-24 2006-12-07 Pentax Corp Distal end protective cap for endoscope
JP2013116277A (en) * 2011-12-05 2013-06-13 Hoya Corp Electronic endoscope, white balance adjustment method, electronic endoscope system, and white balance adjustment tool
JP2014004251A (en) * 2012-06-26 2014-01-16 Hoya Corp Color tone adjustment system for electronic endoscope
JP2016198538A (en) * 2016-07-08 2016-12-01 Hoya株式会社 Color tone adjustment system for electronic endoscope
JP2016214909A (en) * 2016-08-03 2016-12-22 Hoya株式会社 Endoscope apparatus
JP7491711B2 (en) 2020-03-26 2024-05-28 株式会社フジクラ Endoscope

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006223591A (en) * 2005-02-17 2006-08-31 Olympus Corp Color balance adjusting device for endoscope
JP4637604B2 (en) * 2005-02-17 2011-02-23 オリンパス株式会社 Endoscope color balance adjuster
JP2006325690A (en) * 2005-05-24 2006-12-07 Pentax Corp Distal end protective cap for endoscope
JP2013116277A (en) * 2011-12-05 2013-06-13 Hoya Corp Electronic endoscope, white balance adjustment method, electronic endoscope system, and white balance adjustment tool
JP2014004251A (en) * 2012-06-26 2014-01-16 Hoya Corp Color tone adjustment system for electronic endoscope
JP2016198538A (en) * 2016-07-08 2016-12-01 Hoya株式会社 Color tone adjustment system for electronic endoscope
JP2016214909A (en) * 2016-08-03 2016-12-22 Hoya株式会社 Endoscope apparatus
JP7491711B2 (en) 2020-03-26 2024-05-28 株式会社フジクラ Endoscope

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