JPS5850324Y2 - endoscope illumination device - Google Patents
endoscope illumination deviceInfo
- Publication number
- JPS5850324Y2 JPS5850324Y2 JP1978092284U JP9228478U JPS5850324Y2 JP S5850324 Y2 JPS5850324 Y2 JP S5850324Y2 JP 1978092284 U JP1978092284 U JP 1978092284U JP 9228478 U JP9228478 U JP 9228478U JP S5850324 Y2 JPS5850324 Y2 JP S5850324Y2
- Authority
- JP
- Japan
- Prior art keywords
- illumination
- optical fiber
- fiber bundle
- endoscope
- illumination optical
- 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.)
- Expired
Links
Description
【考案の詳細な説明】
本考案は光学繊維束を内蔵し、主として観察、検査、診
断等の医療用に供せられている所謂内視鏡における広角
度の照明範囲を有する照明装置の改良に関するものであ
る。[Detailed Description of the Invention] The present invention relates to an improvement of an illumination device that has a built-in optical fiber bundle and has a wide illumination range in a so-called endoscope, which is mainly used for medical purposes such as observation, inspection, and diagnosis. It is something.
内視鏡を観察、検査、診断等の医療用に供するにさいし
、広い視野内の各部を対比しながら、観察することが精
確な検査、診断を行なうためには欠くべからさ゛ること
であり、内視鏡の観察視野の広角化の試みがなされてき
た。When using an endoscope for medical purposes such as observation, testing, and diagnosis, it is essential to compare and observe each part within a wide field of view in order to perform accurate tests and diagnoses. Attempts have been made to widen the field of view of endoscopes.
しかし、内視鏡における観察光学系の広角化は、１８０
°の画角を有する魚眼レンズで周知の如く現在の技術で
可能であるが、胃等の体腔内の観察における如く照明の
併用を必要とする場合には照明の広角化が不可欠であり
、従来では照明角度がせいぜい６０°前後であるために
観察視野が充分でく、検査、診断に長時間を要し、被検
者に耐えがたい苦痛を与えると共に恐怖感を改え、治療
に重大な悪影響を与えてきた。However, the observation optical system in the endoscope has a wide angle of 180
It is possible with current technology to use a fisheye lens with an angle of view of 100°, but when it is necessary to use illumination in conjunction with the observation of body cavities such as the stomach, it is essential to widen the angle of illumination. Since the illumination angle is around 60 degrees at most, the field of view for observation is not sufficient, and examinations and diagnoses take a long time, causing unbearable pain to the patient and altering their sense of fear, which has a serious negative impact on treatment. It's here.
照明の広角化は、照明光学系の径を大ならしめることに
より達成されるが、照明光学系の径の増大は必然的に内
視鏡の先端構成部の径の増大を伴ない、被検者に一層の
苦痛と恐怖感を与えることとなり、治療器具としては致
命的な欠陥を有することとなる。Widening the angle of illumination is achieved by increasing the diameter of the illumination optical system, but an increase in the diameter of the illumination optical system inevitably accompanies an increase in the diameter of the tip component of the endoscope. This would cause the patient even more pain and fear, and as a therapeutic device it would have a fatal flaw.
本考案はかかる現状に鑑み、内視鏡の先端構成部におけ
る照明窓に、照明光学繊維束の前端面が対面する反射側
の面の中央部に照明用光学繊維束の前端面よりの出射光
が約１２０°の範囲内で分散しうる形状の円錐形状凹部
を有し、かつ該凹部には半透明反射膜がコーティングさ
れている透明屈折体を装着することにより、照明光学系
の径を増大することなく、シかも観察光学系の現在の技
術における広角化に充分に対応しうる程度の照明範囲の
広角化を可能ならしめる照明装置を提供するものであっ
て、以下本考案を図示の実施例に従って説明することと
する。In view of the current situation, the present invention has been proposed to provide an illumination window in the distal end component of an endoscope with light emitted from the front end surface of the illumination optical fiber bundle at the center of the reflection side surface where the front end surface of the illumination optical fiber bundle faces. The diameter of the illumination optical system is increased by attaching a transparent refractor having a conical recess shaped so that the light can be dispersed within a range of approximately 120°, and the recess is coated with a translucent reflective film. The purpose of the present invention is to provide an illumination device that can widen the illumination range to the extent that it can sufficiently cope with the widening of the viewing angle in the current technology of observation optical systems. Let us explain by following an example.
第１図において、１は照明用光学繊維束２の前面の照明
窓３に装着したガラス、プラスチック等からなる透明屈
折体であって、照明用光学繊維束２に対向する面を平面
状となし、照明用光学繊維束２と対面する反対側の面の
卵央部に円錐形状の凹部４を形成せしめたものであり、
凹部４には光線の一部を透過し一部を反射する性質を付
与する半透明反射膜がコーティングされている。In FIG. 1, reference numeral 1 denotes a transparent refractive body made of glass, plastic, etc. that is attached to the illumination window 3 in front of the optical fiber bundle 2 for illumination, and the surface facing the optical fiber bundle 2 for illumination is flat. , a conical recess 4 is formed in the center of the opposite surface facing the illumination optical fiber bundle 2;
The concave portion 4 is coated with a semi-transparent reflective film that transmits a portion of the light beam and reflects a portion of the light beam.
透明屈折体１はこのような構造を有するので、照明用光
学繊維束２から射出される光線のうち、透明屈折体１の
中央部の凹部４のコーテイング面に達した光線は一部透
過し、一部反射し、一部反射して光軸方向から遠方へと
拡散けしめられ、照明角度が約１２０°に及ぶ照明の広
角化を容易に遠戚することができる。Since the transparent refracting body 1 has such a structure, among the light rays emitted from the illumination optical fiber bundle 2, a portion of the light rays that reach the coating surface of the recess 4 in the center of the transparent refracting body 1 are transmitted; It is partially reflected and partially reflected and diffused far from the optical axis direction, making it easy to widen the illumination angle to about 120 degrees.
この拡散の程度は、凹部４を形成する面が光軸となす角
度を必要に応じて変化させることによって調整すること
ができる。The degree of this diffusion can be adjusted by changing the angle that the surface forming the recess 4 makes with the optical axis as necessary.
また、光軸付近の照度は半透−反射膜の透過率を調節す
ることにより調整ができる。Furthermore, the illuminance near the optical axis can be adjusted by adjusting the transmittance of the semi-transparent-reflective film.
さらに、凹部４の形状は全周に光線が反射により約１２
０°の範囲内で均一に分散しうる円錐形状であり、また
照明窓３と観察窓５との位置のずれによる視差（バララ
ックス）を修正する必要がある場合には反射光線が観察
窓５の方向に偏寄するような変形形状であっても良い。Furthermore, the shape of the recess 4 is such that the light rays are reflected around the entire circumference.
It has a conical shape that can be uniformly dispersed within a range of 0°, and if it is necessary to correct parallax due to a positional deviation between the illumination window 3 and the observation window 5, the reflected light rays can be dispersed evenly through the observation window 5. It may also be a deformed shape that is biased in the direction of.
さらに第２図に示す如く凹部４の形状は透明屈折体１を
貫通する截頭円錐形等の貫通孔であっても良く、この場
合には貫通孔により光軸付近の照度を適度に維持すると
共に、反射により約１２０°の範囲で照度を均一となす
ことができる。Further, as shown in FIG. 2, the shape of the recess 4 may be a through hole such as a truncated conical shape passing through the transparent refracting body 1, and in this case, the through hole maintains an appropriate illuminance near the optical axis. At the same time, the illuminance can be made uniform over a range of about 120° by reflection.
この場合、照明用光学繊維束を保護するために保護用窓
ガラスを配置し得ることは勿論である。In this case, it is of course possible to arrange a protective window glass to protect the illumination optical fiber bundle.
以上の説明から明らかなように、本考案に係る内視鏡の
照明装置は、内視鏡の先端構成部における照明用光学繊
維束の前端面に対面せしめて形成された照明窓に照明用
光学繊維束と対面する反対側の面の中央部に照明用光学
繊維束の前端面よりの出射光が約１２０°の範囲内で分
散しうる形状の円錐形状凹部を有し、かつ該凹部には光
線を一部透過し一部反射する性質を備える半透明反射膜
がコーティングされているガラス、プラスチック等から
なる透明屈折体を装着したので、照明光学系の径を増大
することなく、照明光線を広角度に反射し、分散せしめ
、観察光学系の現在の技術における広角化に充分に対応
しうる程度の照明範囲の広角化を可能ならしめると共に
、透明屈折体の部分透過性により光軸方向付近における
激減を防止して照明の均一化を可能ならしめ、実用上の
有用性を一層向上せしめたもので゛ある。As is clear from the above description, the endoscope illumination device according to the present invention has an illumination optical fiber in the illumination window formed to face the front end surface of the illumination optical fiber bundle in the distal end component of the endoscope. In the center of the opposite surface facing the fiber bundle, there is a conical recess shaped so that the light emitted from the front end face of the illumination optical fiber bundle can be dispersed within a range of about 120°, and the recess has A transparent refractor made of glass, plastic, etc. coated with a translucent reflective film that partially transmits light and partially reflects it is installed, so the illumination light can be reflected without increasing the diameter of the illumination optical system. By reflecting and dispersing at a wide angle, it is possible to widen the illumination range to the extent that it can sufficiently correspond to the wide angle of the current observation optical system technology, and due to the partial transparency of the transparent refractor, This prevents a drastic decrease in the amount of light and makes it possible to make the illumination uniform, further improving its practical usefulness.
第１図は本考案に係る照明装置の一実施例を示す断面図
、第２図は本考案に係る照明装置に使用する透明屈折体
の他の実施例を示す側面図である。
１：透明屈折体、２：照明用光学繊維束、３：照明窓、
４：凹部、５：観察窓。FIG. 1 is a sectional view showing one embodiment of the lighting device according to the present invention, and FIG. 2 is a side view showing another embodiment of the transparent refractive body used in the lighting device according to the invention. 1: Transparent refractive body, 2: Optical fiber bundle for illumination, 3: Illumination window,
4: recess, 5: observation window.
Claims (1)
端面前方の照明窓には、前記照明用光学繊維束の前端面
が対面する反対側の面の中央部に照明用光学繊維束の前
端面よりの出射光が約１２０°の範囲内で分散しうる形
状の円錐形状凹部を有し、かつ該凹部には光線を一部透
過し一部反射する性質を備える半透明反射膜がコーティ
ングされているガラス、プラスチック等からなる透明屈
折体を装着したことを特徴とする内視鏡の照明装置。 ２、円錐形状凹部は透明屈折体を貫通する截頭円錐形の
貫通孔であることを特徴とする実用新案登録請求の範囲
第１項記載の内視鏡の照明装置。[Claims for Utility Model Registration] ■. The illumination window in front of the front end surface of the illumination optical fiber bundle in the distal end component of the endoscope has an illumination window on the opposite side facing the front end surface of the illumination optical fiber bundle. It has a conical recess in the center that allows the light emitted from the front end face of the illumination optical fiber bundle to be dispersed within a range of about 120 degrees, and the recess partially transmits the light and partially reflects it. 1. A lighting device for an endoscope, characterized in that a transparent refractor made of glass, plastic, etc. is coated with a translucent reflective film having properties. 2. The illumination device for an endoscope according to claim 1, wherein the conical recess is a truncated cone-shaped through hole passing through the transparent refractive body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978092284U JPS5850324Y2 (en) | 1978-07-06 | 1978-07-06 | endoscope illumination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978092284U JPS5850324Y2 (en) | 1978-07-06 | 1978-07-06 | endoscope illumination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5512204U JPS5512204U (en) | 1980-01-25 |
| JPS5850324Y2 true JPS5850324Y2 (en) | 1983-11-16 |
Family
ID=29022310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978092284U Expired JPS5850324Y2 (en) | 1978-07-06 | 1978-07-06 | endoscope illumination device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850324Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6063516A (en) * | 1983-09-19 | 1985-04-11 | Olympus Optical Co Ltd | Endoscope |
| JPS6052816A (en) * | 1983-09-02 | 1985-03-26 | Olympus Optical Co Ltd | Endoscope |
| JPH01135473U (en) * | 1988-03-10 | 1989-09-18 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117450A (en) * | 1974-08-02 | 1976-02-12 | Mitsubishi Rayon Co | Shukoseiryokona kogakuseni mataha kogakusenisoku |
-
1978
- 1978-07-06 JP JP1978092284U patent/JPS5850324Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117450A (en) * | 1974-08-02 | 1976-02-12 | Mitsubishi Rayon Co | Shukoseiryokona kogakuseni mataha kogakusenisoku |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5512204U (en) | 1980-01-25 |
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