JPH09168505A - Cover lens fixing part of endoscope - Google Patents
Cover lens fixing part of endoscopeInfo
- Publication number
- JPH09168505A JPH09168505A JP7333198A JP33319895A JPH09168505A JP H09168505 A JPH09168505 A JP H09168505A JP 7333198 A JP7333198 A JP 7333198A JP 33319895 A JP33319895 A JP 33319895A JP H09168505 A JPH09168505 A JP H09168505A
- Authority
- JP
- Japan
- Prior art keywords
- cover lens
- endoscope
- metal film
- fixed
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、表面が内視鏡の
外面に露出するように配置されたカバーレンズを固定す
るための内視鏡のカバーレンズ固定部に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover lens fixing portion of an endoscope for fixing a cover lens arranged so that its surface is exposed to the outer surface of the endoscope.
【０００２】[0002]
【従来の技術】内視鏡のカバーレンズは、外面に露出す
るように内視鏡に固着されている。したがって、その固
着部から内視鏡内に水等が侵入しないように、耐水性の
よい接着剤を用いて固着されている。2. Description of the Related Art A cover lens for an endoscope is fixed to the endoscope so as to be exposed on the outer surface. Therefore, it is fixed by using an adhesive having good water resistance so that water or the like does not enter the endoscope through the fixing portion.
【０００３】[0003]
【発明が解決しようとする課題】しかし内視鏡には、使
用の度に、各種の薬品を用いた洗浄消毒やエチレンオキ
サイドガス滅菌その他による滅菌等が施される。However, the endoscope is subjected to cleaning / disinfection with various chemicals, sterilization by ethylene oxide gas sterilization, etc. each time it is used.
【０００４】そのため、長期間使用しているうちに接着
剤が次第に劣化し、水密性が破壊されて内視鏡内に水が
侵入する水漏れ事故や、レンズの脱落等の不具合が発生
する場合がある。Therefore, when the adhesive gradually deteriorates during long-term use, the watertightness is destroyed and water leaks into the endoscope to cause a water leak accident, or a defect such as lens dropout occurs. There is.
【０００５】そこで本発明は、長期間の使用によっても
カバーレンズの固着状態が劣化しない、耐久性の優れた
内視鏡のカバーレンズ固定部を提供することを目的とす
る。Therefore, an object of the present invention is to provide a cover lens fixing portion for an endoscope, which is excellent in durability and whose fixed state of the cover lens does not deteriorate even after long-term use.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の内視鏡のカバーレンズ固定部は、表面が内
視鏡の外面に露出するように配置されて側面部分が内視
鏡に対して水密に固着された内視鏡のカバーレンズ固定
部において、上記カバーレンズの側面に電子線照射と共
に真空蒸着を行う電子シャワー蒸着によって金属膜を形
成し、その金属膜面を内視鏡の金属部に対して固着した
ことを特徴とする。In order to achieve the above-mentioned object, the cover lens fixing portion of the endoscope of the present invention is arranged so that its surface is exposed to the outer surface of the endoscope, and the side surface portion is internally visible. At the cover lens fixing part of the endoscope, which is watertightly fixed to the mirror, a metal film is formed on the side surface of the cover lens by electron shower evaporation which performs vacuum evaporation together with electron beam irradiation, and the metal film surface is viewed internally. It is characterized by being fixed to the metal part of the mirror.
【０００７】なお、上記金属膜が形成された上記カバー
レンズの側面が、上記内視鏡の金属部に対してハンダ付
け又はロー付けによって固着されていてもよく、上記金
属膜が形成された上記カバーレンズの側面が、金属に対
する接着性のよい接着剤によって固着されていてもよ
い。The side surface of the cover lens having the metal film formed thereon may be fixed to the metal part of the endoscope by soldering or brazing. The side surface of the cover lens may be fixed by an adhesive having good adhesion to metal.
【０００８】また、上記固着部が、外面に露出しないよ
うに接着剤によって被覆されていてもよく、上記カバー
レンズの側面の一部分に上記金属膜が形成されていても
よい。The fixed portion may be covered with an adhesive so as not to be exposed to the outer surface, and the metal film may be formed on a part of the side surface of the cover lens.
【０００９】また、上記カバーレンズの側面に、その周
方向に連続して上記金属膜が形成されていてもよく、周
方向の一部だけに上記金属膜が形成されていてもよい。The metal film may be formed continuously on the side surface of the cover lens in the circumferential direction, or the metal film may be formed only on a part of the circumferential direction.
【００１０】[0010]
【発明の実施の形態】図面を参照して本発明の実施の形
態を説明する。図１は、内視鏡の挿入部の先端部分を示
しており、金属ブロック１ａの外表面を電気絶縁性のプ
ラスチックで被覆して先端部本体１が形成されている。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a tip portion of an insertion portion of an endoscope, and a tip portion main body 1 is formed by coating an outer surface of a metal block 1a with an electrically insulating plastic.
【００１１】２は、照明光を被写体に向けて放射するた
めの照明窓であり、外面に露出して配置された凹レンズ
からなるカバーレンズ１０によって水密に塞がれてお
り、カバーレンズ１０の内側に、照明用ライトガイドフ
ァイババンドル３の射出端面３ａが配置されている。な
お、本発明の「カバーレンズ」には、透明な平行平面板
などのように曲率面を持たないものも含まれる。Reference numeral 2 denotes an illumination window for radiating illumination light toward a subject, which is watertightly closed by a cover lens 10 which is a concave lens and is exposed on the outer surface, and is inside the cover lens 10. The exit end face 3a of the light guide fiber bundle 3 for illumination is arranged in the. The "cover lens" of the present invention includes a transparent parallel plane plate having no curvature surface.
【００１２】カバーレンズ１０は、図２にも示されるよ
うに、側面（外周面）の前半側１０ａが４５°程度に面
取りされて、その面は砂目に仕上げられており、後半側
１０ｂは電子線照射と共に真空蒸着を行う電子シャワー
蒸着によって、例えば銅、ニッケル又はクロム等の金属
膜が形成されている。As shown in FIG. 2, the cover lens 10 is chamfered on the front half 10a of the side surface (outer peripheral surface) to about 45 °, and the surface is sanded, and the rear half 10b is formed. A metal film of, for example, copper, nickel, or chromium is formed by electron shower vapor deposition that performs vacuum vapor deposition together with electron beam irradiation.
【００１３】電子シャワー蒸着では、蒸着表面にラジカ
ルが形成されて分子間がイオン結合されるので、薄膜の
結合力が強くて、メッキ等により形成された金属膜等に
比べてはるかに強い密着力が得られる。In the electron shower vapor deposition, radicals are formed on the vapor deposition surface and ionic bonds are formed between the molecules, so that the thin film has a strong binding force and has a much stronger adhesive force than a metal film formed by plating or the like. Is obtained.
【００１４】そして、カバーレンズ１０の金属膜面１０
ｂが先端部本体１の金属ブロック部１ａに対してハンダ
付け又は銀ロー付け等によって水密に固着されており、
それによってカバーレンズ１０が先端部本体１に対して
機械的に強力に固定されている。Then, the metal film surface 10 of the cover lens 10
b is watertightly fixed to the metal block portion 1a of the tip body 1 by soldering or silver brazing,
As a result, the cover lens 10 is mechanically and strongly fixed to the tip body 1.
【００１５】そして、カバーレンズ１０の先側の面取り
面１０ａと先端部本体１のプラスチックブロック部１ｂ
との間に形成された溝内には、耐水性のある例えばエポ
キシ系又はシリコン系等の接着剤４が充填されていて、
その内側の金属部分が薬液等に直接触れないようになっ
ている。したがって、洗浄消毒等が繰り返されても、内
部の金属部分の腐食等が発生しにくい。Then, the chamfered surface 10a on the front side of the cover lens 10 and the plastic block portion 1b of the tip end body 1 are provided.
The groove formed between and is filled with a water-resistant adhesive 4 such as epoxy-based or silicon-based adhesive,
The metal part inside is not touched directly with the chemical solution. Therefore, even if the cleaning and disinfecting are repeated, corrosion of the internal metal portion is unlikely to occur.
【００１６】なお、カバーレンズ１０の金属膜面１０ｂ
を、先端部本体１の金属ブロック部１ａに対して接着剤
によって固着してもよい。その場合でも、金属に対する
接着性の強い接着剤を使用することができるので、ガラ
ス面を接着する場合に比べればはるかに強い接着力を得
ることができる。The metal film surface 10b of the cover lens 10
May be fixed to the metal block portion 1a of the tip body 1 with an adhesive. Even in that case, since an adhesive having a strong adhesiveness to a metal can be used, a much stronger adhesive force can be obtained as compared with the case of adhering a glass surface.
【００１７】図３及び図４は、本発明を観察用対物光学
系に適用した例を示しており、先端部本体１に形成され
た観察窓６に、対物光学系のカバーレンズ２０が嵌め込
まれている。FIGS. 3 and 4 show an example in which the present invention is applied to an observation objective optical system, in which a cover lens 20 of the objective optical system is fitted into an observation window 6 formed in the tip end main body 1. ing.
【００１８】カバーレンズ２０は、図４にも示されるよ
うに、側面（外周面）の前側細径部２０ａと後側太径部
２０ｂとの間の斜面２０ｃの部分だけに、電子シャワー
蒸着により金属膜が形成されている。したがって、金属
膜部分での乱反射等による観察像への悪影響が最小限に
止められている。As shown in FIG. 4, the cover lens 20 is formed by electron shower deposition only on the slope 20c between the front small diameter portion 20a and the rear large diameter portion 20b of the side surface (outer peripheral surface). A metal film is formed. Therefore, adverse effects on the observed image due to diffused reflection and the like at the metal film portion are minimized.
【００１９】そしてカバーレンズ２０の金属膜面２０ｃ
部分が、対物レンズ群（図示せず）が嵌め込まれて支持
された金属製の鏡枠７の先端部分に、カシメのあとハン
ダ付け又は銀ロー付けによって水密に固定されている。The metal film surface 20c of the cover lens 20
The portion is fixed in a watertight manner by caulking, then soldering or silver brazing to a tip portion of a metallic lens frame 7 in which an objective lens group (not shown) is fitted and supported.
【００２０】４は、固定部が外面に露出しないように、
固定部を被覆するように充填されたエポキシ系又はシリ
コン系の接着剤である。なお、第１の実施の形態と同様
に、金属膜面２０ｃを接着によって鏡枠７に固着しても
よい。Numeral 4 is to prevent the fixed portion from being exposed to the outer surface,
It is an epoxy-based or silicone-based adhesive filled so as to cover the fixing portion. Note that, as in the first embodiment, the metal film surface 20c may be fixed to the lens frame 7 by adhesion.
【００２１】なお、上述の各実施の形態おいては、カバ
ーレンズ側面の周方向に連続して金属膜を形成してい
る。これはハンダ付け、銀ロー付け、接着による鏡枠へ
の接着を周方向に連続的にすることで水密性を最良に保
つのに有効である。In each of the above-described embodiments, the metal film is continuously formed in the circumferential direction on the side surface of the cover lens. This is effective for maintaining the best watertightness by making the bonding to the lens frame by soldering, silver brazing and bonding continuous in the circumferential direction.
【００２２】しかし、それ以外の部分で十分な水密性を
保つことができるものであれば、金属膜をカバーレンズ
側面の周方向の一部だけに設けたり、断続的に設けるよ
うにしてもよい。そのようにすることにより、乱反射の
要因となり得る金属膜部分を効果的に減少させることが
できる。However, the metal film may be provided only on a part of the side surface of the cover lens in the circumferential direction, or may be provided intermittently, as long as sufficient watertightness can be maintained in other portions. . By doing so, it is possible to effectively reduce the metal film portion that may cause diffuse reflection.
【００２３】なお、本発明は内視鏡の挿入部先端に限ら
ず、その他の部分（例えば接眼部等）にも適用すること
ができる。The present invention can be applied not only to the tip of the insertion portion of the endoscope, but also to other portions (for example, an eyepiece portion).
【００２４】[0024]
【発明の効果】本発明によれば、カバーレンズの側面に
電子シャワー蒸着によって金属膜を形成してその面を内
視鏡の金属部に対して固着したので、ハンダ付けやロー
付け等によって強固に機械的に固着することができ、ま
た、金属に良く付く接着剤でも固着することができるの
で、長期間の使用によってもレンズの固着状態が劣化し
難く、優れた耐久性を得ることができる。According to the present invention, since the metal film is formed on the side surface of the cover lens by the electron shower deposition and the surface is fixed to the metal portion of the endoscope, it is firmly fixed by soldering or brazing. Since it can be mechanically fixed to the lens, and can be fixed even with an adhesive that adheres well to metal, the fixed state of the lens does not easily deteriorate even after long-term use, and excellent durability can be obtained. .
【図１】本発明の実施の形態の照明窓周辺の側面図であ
る。FIG. 1 is a side view around a lighting window according to an embodiment of the present invention.
【図２】本発明の実施の形態の照明窓用カバーレンズの
斜視図である。FIG. 2 is a perspective view of the illumination window cover lens according to the embodiment of the present invention.
【図３】本発明の実施の形態の観察窓周辺の側面図であ
る。FIG. 3 is a side view around an observation window according to the embodiment of the present invention.
【図４】本発明の実施の形態の観察窓用カバーレンズの
斜視図である。FIG. 4 is a perspective view of the observation window cover lens according to the embodiment of the present invention.
１ 先端部本体 １ａ 金属ブロック部 ７ 鏡枠 １０，２０ カバーレンズ １０ｂ，２０ｃ 金属膜面 1 tip body 1a metal block part 7 mirror frame 10,20 cover lens 10b, 20c metal film surface
Claims (7)
されて側面部分が内視鏡に対して水密に固着された内視
鏡のカバーレンズ固定部において、 上記カバーレンズの側面に電子線照射と共に真空蒸着を
行う電子シャワー蒸着によって金属膜を形成し、その金
属膜面を内視鏡の金属部に対して固着したことを特徴と
する内視鏡のカバーレンズ固定部。1. A cover lens fixing portion of an endoscope, the surface of which is disposed so as to be exposed to the outer surface of the endoscope, and the side surface portion of which is watertightly fixed to the endoscope. A cover lens fixing part for an endoscope, characterized in that a metal film is formed by electron shower evaporation which performs vacuum evaporation together with electron beam irradiation, and the metal film surface is fixed to a metal part of the endoscope.
の側面が、上記内視鏡の金属部に対してハンダ付け又は
ロー付けによって固着されている請求項１記載の内視鏡
のカバーレンズ固定部。2. The cover lens for an endoscope according to claim 1, wherein a side surface of the cover lens on which the metal film is formed is fixed to a metal portion of the endoscope by soldering or brazing. Fixed part.
の側面が、金属に対する接着性のよい接着剤によって固
着されている請求項１記載の内視鏡のカバーレンズ固定
部。3. The cover lens fixing portion for an endoscope according to claim 1, wherein the side surface of the cover lens on which the metal film is formed is fixed by an adhesive having good adhesiveness to metal.
着剤によって被覆されている請求項２又は３記載の内視
鏡のカバーレンズ固定部。4. The cover lens fixing portion for an endoscope according to claim 2, wherein the fixing portion is covered with an adhesive so as not to be exposed on the outer surface.
属膜が形成されている請求項１、２、３又は４記載の内
視鏡のカバーレンズ固定部。5. A cover lens fixing portion for an endoscope according to claim 1, wherein the metal film is formed on a part of a side surface of the cover lens.
連続して上記金属膜が形成されている請求項１、２、
３、４又は５記載の内視鏡のカバーレンズ固定部。6. The metal film is continuously formed on the side surface of the cover lens in the circumferential direction thereof.
The cover lens fixing portion of the endoscope according to 3, 4, or 5.
一部だけに上記金属膜が形成されている請求項１、２、
３、４又は５記載の内視鏡のカバーレンズ固定部。7. The metal film is formed on only a part of the side surface of the cover lens in the circumferential direction thereof.
The cover lens fixing portion of the endoscope according to 3, 4, or 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33319895A JP3637121B2 (en) | 1995-12-21 | 1995-12-21 | Endoscope cover lens fixing part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33319895A JP3637121B2 (en) | 1995-12-21 | 1995-12-21 | Endoscope cover lens fixing part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09168505A true JPH09168505A (en) | 1997-06-30 |
| JP3637121B2 JP3637121B2 (en) | 2005-04-13 |
Family
ID=18263414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33319895A Expired - Fee Related JP3637121B2 (en) | 1995-12-21 | 1995-12-21 | Endoscope cover lens fixing part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3637121B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000070214A (en) * | 1998-08-28 | 2000-03-07 | Olympus Optical Co Ltd | Endoscope device |
| JP2001212075A (en) * | 2000-02-02 | 2001-08-07 | Olympus Optical Co Ltd | Endoscope |
| JP2006130100A (en) * | 2004-11-08 | 2006-05-25 | Optiscan Pty Ltd | Cover glass and endoscope |
| US7409130B2 (en) | 2003-10-16 | 2008-08-05 | Olympus Corporation | Endoscope |
| JP2012159698A (en) * | 2011-02-01 | 2012-08-23 | Fujifilm Corp | Illumination optical system for endoscope |
| CN103989450A (en) * | 2013-02-18 | 2014-08-20 | 奥林匹斯冬季和Ibe有限公司 | Method for manufacturing endoscope and endoscope |
-
1995
- 1995-12-21 JP JP33319895A patent/JP3637121B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000070214A (en) * | 1998-08-28 | 2000-03-07 | Olympus Optical Co Ltd | Endoscope device |
| JP2001212075A (en) * | 2000-02-02 | 2001-08-07 | Olympus Optical Co Ltd | Endoscope |
| US7409130B2 (en) | 2003-10-16 | 2008-08-05 | Olympus Corporation | Endoscope |
| JP2006130100A (en) * | 2004-11-08 | 2006-05-25 | Optiscan Pty Ltd | Cover glass and endoscope |
| JP2012159698A (en) * | 2011-02-01 | 2012-08-23 | Fujifilm Corp | Illumination optical system for endoscope |
| CN103989450A (en) * | 2013-02-18 | 2014-08-20 | 奥林匹斯冬季和Ibe有限公司 | Method for manufacturing endoscope and endoscope |
| US20140235939A1 (en) * | 2013-02-18 | 2014-08-21 | Olympus Winter & Ibe Gmbh | Method for producing an endoscope and an endoscope |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3637121B2 (en) | 2005-04-13 |
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