JP2604084B2 - Endoscope device - Google Patents
Endoscope deviceInfo
- Publication number
- JP2604084B2 JP2604084B2 JP4002580A JP258092A JP2604084B2 JP 2604084 B2 JP2604084 B2 JP 2604084B2 JP 4002580 A JP4002580 A JP 4002580A JP 258092 A JP258092 A JP 258092A JP 2604084 B2 JP2604084 B2 JP 2604084B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- subject
- solid
- laser
- state imaging
- 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 - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は例えば患部を治療する
のに用いられる内視鏡装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope apparatus used for treating an affected part, for example.
【０００２】[0002]
［発明の技術的背景］ [Technical background of the invention]
【０００３】従来より、内視鏡装置を用いて生体組織の
治療等を行うことは周知である。そして、このような治
療に用いられる内視鏡としては、図３に示すように内視
鏡１の先端部に被写体結像用の対物レンズ２を設け、こ
の対物レンズ２で結像した被写体３を使用者がイメージ
ファイバ管４を介して内視鏡１の基端に設けられる接眼
レンズ５より観察しながら、レーザ発振装置６よりレー
ザ、例えば生体組織に対して透過率の大きいＹＡＧレー
ザ（波長１．０６ｍｍ）を照射して生体組織の患部を熱
凝固させることで治療を行うように構成されている。[0003] Conventionally, it is well known to perform treatment of a living tissue using an endoscope apparatus. As an endoscope used for such treatment, as shown in FIG. 3, an objective lens 2 for imaging a subject is provided at a distal end portion of an endoscope 1 and an object 3 formed by the objective lens 2 is formed. Is observed by a user through an eyepiece lens 5 provided at the base end of the endoscope 1 via an image fiber tube 4, and a laser, for example, a YAG laser (wavelength (1.06 mm) so that the affected part of the living tissue is thermally coagulated to perform treatment.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記内視鏡装
置では、固体撮像素子を用いた場合、可視域以外の赤外
部分が制限されていないため正しく色再現をすることが
出来なかった。However, in the above-mentioned endoscope apparatus, when a solid-state imaging device is used, color reproduction cannot be performed correctly because infrared portions other than the visible region are not restricted.
【０００５】この発明は上記の事情に鑑みてなされたも
ので、簡易な構成で、かつ、可及的に取扱い操作の確実
化を促進し得るようにした内視鏡装置を提供することを
目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an endoscope apparatus which has a simple configuration and which can promote assured handling operation as much as possible. And
【０００６】[0006]
【課題を解決するための手段】この発明は、先端部に設
けられた被写体結像用の対物レンズと、この対物レンズ
の光軸上に設けられ結像された被写体像を光電変換する
固体撮像素子と、前記先端部から被写体に対して照射光
を照射する光源装置と、前記先端部から前記被写体の一
部に対して、可視光域にない治療用のレーザ光を照射す
るレーザ発振装置と、前記固体撮像素子の出力信号を信
号処理回路に導く信号伝走路とを具備し、前記固体撮像
素子と前記被写体との光路上の所定の位置に配設され、
前記被写体からの前記照明光及び前記レーザ光の反射光
に対して可視光域及び前記レーザ光近傍の帯域の透過を
許容し、これら帯域以外の赤外域を制限するフィルタを
備えて構成したものである。SUMMARY OF THE INVENTION The present invention relates to an object lens for imaging a subject provided at a tip end thereof, and a solid-state imaging device provided on an optical axis of the objective lens for photoelectrically converting the formed image of the subject. An element, a light source device that irradiates irradiation light to the subject from the tip, and a laser oscillation device that irradiates therapeutic laser light that is not in a visible light range to a part of the subject from the tip. A signal transmission path that guides an output signal of the solid-state imaging device to a signal processing circuit, provided at a predetermined position on an optical path between the solid-state imaging device and the subject,
The illumination light and the reflected light of the laser light from the subject are configured to include a filter that allows transmission in a visible light region and a band near the laser light and limits an infrared region other than these bands. is there.
【０００７】[0007]
【作用】上記構成によれば、フィルタ装置が、被写体か
らの照明光およびレーザ光の反射光に対して可視域を許
容し赤外光を制限していることにより、固体撮像素子を
用いた場合においても、正しい色再現を実現することが
可能となる。According to the above configuration, the filter device allows the visible region to be illuminated with respect to the illumination light from the subject and the reflected light of the laser light and restricts the infrared light. Also, it is possible to realize correct color reproduction.
【０００８】[0008]
【実施例】以下、この発明の実施例について、図面を参
照して詳細に説明する。図１はこの発明の一実施例に係
る内視鏡装置を示すもので、図中１０は内視鏡本体部の
一端に移動調整自在に設けられる内視鏡先端部である。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an endoscope apparatus according to one embodiment of the present invention. In the figure, reference numeral 10 denotes an endoscope distal end provided at one end of an endoscope main body so as to be movable and adjustable.
【０００９】この内視鏡先端部１０には被写体結像用の
対物レンズ１１が配設され、この対物レンズ１１の光軸
上には図２に示すように分光感度Ｂを有する赤外カット
フィルタ１２を介して可視域乃至赤外域の分光感度Ａを
有する固体撮像素子１３が配設される。この固体撮像素
子１３は上記対物レンズ１２によってその感光面上に結
像した被写体１４を画像信号に光電変換せしめるもの
で、その出力端がビデオ信号処理回路１５を介して表示
装置例えばＣＲＴモニター１６に接続される。An objective lens 11 for imaging an object is disposed at the end portion 10 of the endoscope. An infrared cut filter having a spectral sensitivity B as shown in FIG. A solid-state imaging device 13 having a spectral sensitivity A in the visible region to the infrared region is provided via the reference numeral 12. The solid-state imaging device 13 photoelectrically converts a subject 14 formed on the photosensitive surface by the objective lens 12 into an image signal. The output end of the solid-state imaging device 13 is connected to a display device such as a CRT monitor 16 via a video signal processing circuit 15. Connected.
【００１０】また、内視鏡先端部１０には照明光照射口
１７が設けられ、この照明光照射口１７にはライトライ
ン１８を介して光源装置１９の出力端が連結される。こ
の光源装置１９はその光源２０に対して熱線吸収ガラス
２１を介して赤外カットフィルタ２２が配設され、この
赤外カットフィルタ２２と上記出力端との間には分光特
性を図４中ｃで示す如く制御せしめる例えばコンデンサ
レンズ２３が配設される。Further, an illumination light irradiation port 17 is provided at the distal end portion 10 of the endoscope, and an output end of a light source device 19 is connected to the illumination light irradiation port 17 via a light line 18. In the light source device 19, an infrared cut filter 22 is provided for the light source 20 via a heat ray absorbing glass 21, and a spectral characteristic between the infrared cut filter 22 and the output terminal is c in FIG. For example, a condenser lens 23 which is controlled as shown in FIG.
【００１１】さらに、上記内視鏡先端部１０には患部治
療用のレーザ照射口２４が設けられ、このレーザ照射口
２４にはレーザライン２５を介して例えばＹＡＧレーザ
を出力するレーザ発振装置２６の出力端が連結される。Further, a laser irradiation port 24 for treating an affected part is provided in the endoscope distal end portion 10. The laser irradiation port 24 is provided with a laser oscillation device 26 which outputs, for example, a YAG laser through a laser line 25. The output ends are connected.
【００１２】すなわち、上記構成において、被写体１４
は光源装置１９からの分光特性ｃを有する照明光がライ
トライン１８を介して照明光照射口１７より照射される
と、その反射光が対物レンズ１１によって赤外カットフ
ィルタ１２を介して固体撮像素子１３の感光面上に結像
される。そして、その被写体像は画像信号に光電変換さ
れた後、ビデオ信号処理回路１５で信号処理され、ＣＲ
Ｔモニタ−１６に表示される。同時に、レーザ発振装置
２６から出力されるＹＡＧレーザはレーザライン２５を
介してレーザ照射口２４より上記被写体１４に照射され
ると、上記対物レンズ１１によって赤外カットフィルタ
１２を介して固体撮像素子１３の感光面に結像される
が、このとき赤外カットフィルタ１２の赤外域を制限す
る分光特性により、そのレーザ光像は制限され、可視域
の光が固体撮像素子１３により光電変換される。そし
て、ビデオ信号処理回路１５で信号処理され、ＣＲＴモ
ニター１６に入力されて上記被写体像とともに表示され
る。That is, in the above configuration, the object 14
When illumination light having a spectral characteristic c from a light source device 19 is irradiated from an illumination light irradiation port 17 through a light line 18, the reflected light is reflected by an objective lens 11 through an infrared cut filter 12 and a solid-state imaging device. An image is formed on the photosensitive surface 13. Then, the subject image is photoelectrically converted into an image signal, and then subjected to signal processing in a video signal processing circuit 15 to perform CR processing.
Displayed on T monitor-16. At the same time, when the subject 14 is irradiated with the YAG laser output from the laser oscillation device 26 via the laser irradiation port 24 via the laser line 25, the solid-state imaging device 13 is transmitted through the infrared cut filter 12 by the objective lens 11. At this time, the laser light image is restricted by the spectral characteristics of the infrared cut filter 12 that restricts the infrared region, and light in the visible region is photoelectrically converted by the solid-state imaging device 13. Then, the video signal is processed by the video signal processing circuit 15, input to the CRT monitor 16, and displayed together with the subject image.
【００１３】このように、上記内視鏡装置はカラーテレ
ビジョンカメラを構成する固体撮像素子１３の分光感度
特性及び被写体１４に対して照明光を照射する光源装置
１９の分光特性を制御する赤外カットフィルタ２２を設
け、被写体像とともに前記レーザ光像を前記ＣＲＴモニ
ター１６に表示可能としたので、レーザ光を所定の位置
に正確に照射するのが容易となり、可及的に取扱い操作
の確実化が促進される。また、イメージファイバ管を介
して観察した場合でも、レーザ光像が直接目に入ること
が無いので安全である。なお、この発明は上記実施例に
限ることなく、その外、この発明の要旨を逸脱しない範
囲で種々の変形を実施し得ることはいうまでもないこと
である。As described above, the endoscope apparatus controls the spectral sensitivity of the solid-state image pickup device 13 constituting the color television camera and the infrared light for controlling the spectral characteristic of the light source device 19 which irradiates the subject 14 with illumination light. Since the cut filter 22 is provided and the laser light image can be displayed on the CRT monitor 16 together with the subject image, it becomes easy to accurately irradiate the laser light to a predetermined position, and the handling operation is made as reliable as possible. Is promoted. Further, even when the image is observed through an image fiber tube, the laser light image does not enter the eyes directly, which is safe. It is needless to say that the present invention is not limited to the above embodiment, and that various modifications can be made without departing from the scope of the present invention.
【００１４】[0014]
【発明の効果】以上詳述したように、この発明によれ
ば、可視光域ではないレーザ光の周波数近傍の帯域の赤
外線を取除く赤外カットフィルタを用いて、固体撮像素
子に入射される光の帯域を制限しているので、固体撮像
素子における正しい色再現を実現することができると共
に、レーザ光像を観察することができる内視鏡装置を提
供することができる。As described above in detail, according to the present invention, the light is incident on the solid-state imaging device by using an infrared cut filter that removes infrared light in a band near the frequency of the laser beam which is not a visible light region. Since the band of light is limited, it is possible to provide an endoscope device that can realize correct color reproduction in the solid-state imaging device and can observe a laser light image.
【図１】この発明の一実施例に係る内視鏡装置を示す構
成説明図。FIG. 1 is a configuration explanatory view showing an endoscope apparatus according to one embodiment of the present invention.
【図２】第１図の固体撮像素子及び赤外カットフィルタ
の分光特性を示す特性図。FIG. 2 is a characteristic diagram showing spectral characteristics of the solid-state imaging device and the infrared cut filter of FIG. 1;
【図３】従来の内視鏡装置を示す構成説明図。FIG. 3 is a configuration explanatory view showing a conventional endoscope apparatus.
【図４】レーザ光の分光特性、人間の視感度特性及びカ
ラーテレビジョンカメラの赤外カットフィルタの分光特
性を示す特性図。FIG. 4 is a characteristic diagram showing a spectral characteristic of a laser beam, a human visual sensitivity characteristic, and a spectral characteristic of an infrared cut filter of a color television camera.
【符号の説明】 １０…内視鏡先端部、１１…対物レンズ、１２…赤外カ
ットフィルタ、１３…固体撮像素子、１４…被写体、１
５…信号処理回路、１６…ＣＲＴモニター、１７…照明
光照射口、１８…ライトライン、１９…光源装置、２０
…光源、２１…熱線吸収ガラス、２２…赤外カットフィ
ルタ、２３…コンデンサレンズ、２４…レーザ照射口、
２５…レーザライン、２６…レーザ発振装置。[Description of Signs] 10 endoscope end portion, 11 objective lens, 12 infrared cut filter, 13 solid-state imaging device, 14 subject, 1
5: signal processing circuit, 16: CRT monitor, 17: illumination light irradiation port, 18: light line, 19: light source device, 20
... light source, 21 ... heat ray absorbing glass, 22 ... infrared cut filter, 23 ... condenser lens, 24 ... laser irradiation port,
25: laser line, 26: laser oscillation device.
Claims (1)
レンズと、 この対物レンズの光軸上に設けられ結像された被写体像
を光電変換する固体撮像素子と、 前記先端部から被写体に対して照射光を照射する光源装
置と、 前記先端部から前記被写体の一部に対して、可視光域に
ない治療用のレーザ光を照射するレーザ発振装置と、 前記固体撮像素子の出力信号を信号処理回路に導く信号
伝走路とを具備し、 前記固体撮像素子と前記被写体との光路上の所定の位置
に配設され、前記被写体からの前記照明光及び前記レー
ザ光の反射光に対して可視光域及び前記レーザ光近傍の
帯域の透過を許容し、これら帯域以外の赤外域を制限す
るフィルタを備えたことを特徴とする内視鏡装置。An object lens provided at a tip portion for imaging a subject; a solid-state image pickup device provided on an optical axis of the objective lens for photoelectrically converting the formed subject image; a light source device that irradiates illumination light to, for some of the subject from the tip portion, in the visible light region
A laser oscillation device for irradiating a laser light for no treatment, the output signal of the solid-state imaging device includes a signal Den runway leading to the signal processing circuit, a predetermined position on the optical path between the between the solid-subject Disposed in the visible light region and near the laser light with respect to the illumination light and the reflected light of the laser light from the subject .
An endoscope apparatus comprising: a filter that allows transmission in a band and limits an infrared region other than these bands .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4002580A JP2604084B2 (en) | 1992-01-10 | 1992-01-10 | Endoscope device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4002580A JP2604084B2 (en) | 1992-01-10 | 1992-01-10 | Endoscope device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60269647A Division JPH0793931B2 (en) | 1985-11-30 | 1985-11-30 | Endoscope device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05329094A JPH05329094A (en) | 1993-12-14 |
| JP2604084B2 true JP2604084B2 (en) | 1997-04-23 |
Family
ID=11533316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4002580A Expired - Lifetime JP2604084B2 (en) | 1992-01-10 | 1992-01-10 | Endoscope device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2604084B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009142372A (en) * | 2007-12-12 | 2009-07-02 | Fujinon Corp | Endoscope light source device |
| CN113015554B (en) * | 2018-11-19 | 2023-07-28 | 奥林巴斯株式会社 | Endoscope cover and endoscope system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60137342A (en) * | 1983-12-27 | 1985-07-20 | オリンパス光学工業株式会社 | Electronic scope |
| JPH0535374Y2 (en) * | 1984-12-28 | 1993-09-08 |
-
1992
- 1992-01-10 JP JP4002580A patent/JP2604084B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05329094A (en) | 1993-12-14 |
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