JPH0629911B2 - End tip structure of endoscope - Google Patents
End tip structure of endoscopeInfo
- Publication number
- JPH0629911B2 JPH0629911B2 JP60096533A JP9653385A JPH0629911B2 JP H0629911 B2 JPH0629911 B2 JP H0629911B2 JP 60096533 A JP60096533 A JP 60096533A JP 9653385 A JP9653385 A JP 9653385A JP H0629911 B2 JPH0629911 B2 JP H0629911B2
- Authority
- JP
- Japan
- Prior art keywords
- solid
- endoscope
- prism
- state image
- element surface
- 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
- 230000003287 optical effect Effects 0.000 claims description 23
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 11
- 230000037431 insertion Effects 0.000 claims description 11
- 239000006059 cover glass Substances 0.000 description 18
- 238000003384 imaging method Methods 0.000 description 14
- 239000000428 dust Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001574 biopsy Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
-
- 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
- A61B1/00163—Optical arrangements
- A61B1/00174—Optical arrangements characterised by the viewing angles
- A61B1/00177—Optical arrangements characterised by the viewing angles for 90 degrees side-viewing
-
- 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
- A61B1/05—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 characterised by the image sensor, e.g. camera, being in the distal end portion
- A61B1/051—Details of CCD assembly
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Description
【発明の詳細な説明】 「技術分野」 本発明は、内視鏡に関し、特にイメージファイバに変え
て固体撮像素子を用いる内視鏡の先端部構造に関する。TECHNICAL FIELD The present invention relates to an endoscope, and more particularly to a distal end structure of an endoscope that uses a solid-state image sensor instead of an image fiber.
「従来技術およびその問題点」 従来の内視鏡は、その体内挿入部分の先端に設けた対物
レンズにより被写体像を結像させ、この像をイメージフ
ァイバを介して接眼レンズに導いて観察するものであっ
た。ところが最近、固体撮像素子の発展を受けて、対物
レンズによる観察像をこの固体撮像素子上に結像させ、
この固体撮像素子からの信号によりテレビ画面に観察像
を写し出すことが試みられている。この固体撮像素子を
用いた内視鏡は、高価なイメージファイバの代わりに信
号線を用いればよく、またその観察も接眼レンズを通す
必要がないため、術者は、テレビ画面を見ながら自然な
姿勢で操作でき、操作性に優れている。また内視鏡の接
眼部に取り付ける、いわゆる外付けテレビカメラに比
べ、解像力が向上すること、および画像信号の電気的処
理が可能であることから、観察性能、診断性能に優れる
という特徴がある。“Prior Art and Its Problems” Conventional endoscopes are those in which a subject image is formed by an objective lens provided at the tip of the body insertion portion, and this image is guided to an eyepiece lens through an image fiber for observation. Met. However, recently, with the development of the solid-state image sensor, an observation image by an objective lens is formed on the solid-state image sensor,
It has been attempted to display an observation image on a television screen by a signal from this solid-state image sensor. An endoscope using this solid-state image pickup device may use a signal line instead of an expensive image fiber, and the observation does not need to pass through an eyepiece lens. It can be operated in a posture and has excellent operability. In addition, compared with a so-called external TV camera attached to the eyepiece of the endoscope, the resolution is improved and the image signal can be electrically processed, and thus it has excellent observation performance and diagnostic performance. .
ところでCMOS、CCD、CPD等の固体撮像素子は、例えばシリ
コン単結晶薄板（ウェハ）の表面に、シリコン酸化膜を
形成し、この上にさらに写真食刻法、熱拡散、蒸着等の
手法を用いて、所要の集積回路パターンを形成したもの
である。この集積回路パターンの表面には、シリコン酸
化膜、アルミニウム膜等が露出しており、これらは非常
に酸化、腐食しやすい。このため、その表面をカバーガ
ラスで覆い、素子面との間を窒素ガス等の不活性ガスで
封止することが行なわれている。このカバーガラスは結
像面である素子面に塵埃が付着するのを防止し、塵埃が
結像しないようにする役目も持つ。すなわちカバーガラ
ス表面に塵埃が付着したとしても、この塵埃はアウトフ
ォーカスとなるため、塵埃として観察されることはな
い。By the way, solid-state imaging devices such as CMOS, CCD, CPD, etc., for example, a silicon oxide film is formed on the surface of a silicon single crystal thin plate (wafer), and then photolithography, thermal diffusion, vapor deposition, etc. are used. Then, a required integrated circuit pattern is formed. A silicon oxide film, an aluminum film, and the like are exposed on the surface of this integrated circuit pattern, and these are very likely to be oxidized and corroded. For this reason, the surface of the element is covered with a cover glass and the space between the element surface and the element surface is sealed with an inert gas such as nitrogen gas. This cover glass also serves to prevent dust from adhering to the element surface, which is an image forming surface, and prevent dust from forming an image. That is, even if dust is attached to the surface of the cover glass, the dust is out of focus and is not observed as dust.
しかしながらこのカバーガラスは、一定の厚さを有する
ため、内視鏡の対物光学系としてはスペースをとるとい
う問題がある。すなわち内視鏡の体内挿入部は、患者の
苦痛を軽減するために、極限まで細く、かつ先端硬性部
を短くすることを要求されており、例えば食道では成人
男子で最大16mm程度といわれていて、それ以上太いと
胃用内視鏡として用いることはできないこととなってし
まう。このような要求下で、不活性ガスを封入したカバ
ーガラス付きの固体撮像素子はそれ自身で幅が厚くなっ
てしまうため、スペース効率を悪化させてしまう。すな
わち例えば体内挿入部先端の硬性部の径や長さを大きく
し、また他の内蔵物の収納スペースを犠牲にするため、
内視鏡としての光量、生検能などの機能低下を招く。ま
た生検具挿通等のための鉗子チャンネル、照明用ライト
ガイド等の他の内蔵物を主に構成すると、対物光学系の
良い配置が得られない。However, since this cover glass has a constant thickness, there is a problem that it takes up space as an objective optical system of an endoscope. That is, the body insertion portion of the endoscope is required to be as thin as possible and the tip rigid portion to be shortened in order to reduce the pain of the patient.For example, in the esophagus, it is said that the maximum adult male size is about 16 mm. If it is thicker than that, it cannot be used as a gastroscope. Under such a demand, the solid-state imaging device with a cover glass in which an inert gas is sealed has a large width by itself, which deteriorates space efficiency. That is, for example, to increase the diameter and length of the rigid part at the tip of the insertion part in the body and to sacrifice the storage space for other internal components,
This leads to deterioration of the light quantity and biopsy capability of the endoscope. Further, if other built-in components such as a forceps channel for inserting a biopsy tool, an illumination light guide, etc. are mainly configured, a good arrangement of the objective optical system cannot be obtained.
「発明の目的」 本発明は、このような従来の固体撮像素子を用いた内視
鏡の問題点に注目し、カバーガラスを要することのない
固体撮像素子の配置構造を提案して、上記の欠点を除く
ことを目的とする。[Object of the Invention] The present invention focuses on the problems of the endoscope using such a conventional solid-state imaging device, proposes an arrangement structure of the solid-state imaging device that does not require a cover glass, and The purpose is to eliminate defects.
「発明の概要」 本発明は、固体撮像素子表面の集積回路パターンの酸化
を防ぐため不可欠な不活性ガス封止用のカバーガラスを
用いることなく、この代わりに、対物光学系の一部を構
成するプリズムを直接固体撮像素子の素子面に接着した
ことを特徴としている。すなわち本発明の内視鏡は、対
物レンズからの光を固体撮像素子に向けて屈曲するプリ
ズムを設け、かつこのプリズムを、固体撮像素子の素子
面上に光学用接着剤を介して直接接着し、該光学用接着
剤により該素子面が外気に触れないように被覆したこと
を特徴としている。[Summary of the Invention] The present invention does not use a cover glass for sealing an inert gas, which is indispensable for preventing oxidation of an integrated circuit pattern on the surface of a solid-state imaging device, and instead constitutes a part of an objective optical system. It is characterized in that the prism to be bonded is directly adhered to the element surface of the solid-state image sensor. That is, the endoscope of the present invention is provided with a prism that bends the light from the objective lens toward the solid-state imaging device, and the prism is directly bonded to the element surface of the solid-state imaging device via an optical adhesive. The element surface is covered with the optical adhesive so as not to come into contact with the outside air.
「発明の実施例」 以下図示実施例について本発明を説明する。第１図、第
２図は本発明の第一の実施例を示すもので、側視型の内
視鏡に本発明を適用したものである。体内挿入部分の先
端の硬性部１１には、その側面に、対物光学系のカバー
ガラス１２と、照明光学系のカバーガラス１３が配置さ
れている。カバーガラス１２の内面には、第一の直角プ
リズム１４が接着され、この直角プリズム１４の光路上
に、体内挿入部分の軸方向を光軸とした対物レンズ１５
が位置している。"Examples of the Invention" The present invention will be described below with reference to illustrated examples. 1 and 2 show a first embodiment of the present invention, in which the present invention is applied to a side-view endoscope. A cover glass 12 of an objective optical system and a cover glass 13 of an illumination optical system are arranged on the side surface of the rigid portion 11 at the tip of the body insertion portion. A first right-angle prism 14 is adhered to the inner surface of the cover glass 12, and an objective lens 15 having an optical axis in the axial direction of the body insertion portion is provided on the optical path of the right-angle prism 14.
Is located.
この対物レンズ１５の光路上には、さらに第二の直角プ
リズム１６が位置していて、この直角プリズム１６の一
面、つまり１１の体内挿入部の軸方向と平行な面１６ａ
に、固体撮像素子２０の素子面２０ａが光学用接着材を
介して直接接着されている。直角プリズム１６はその斜
面１６ｂをプリズム保持台１７に接着しており、プリズ
ム保持台１７は固定ねじ１８を介して硬性部１１に固定
されている。A second right-angle prism 16 is further located on the optical path of the objective lens 15, and one surface of the right-angle prism 16, that is, a surface 16a parallel to the axial direction of the insertion portion 11 in the body.
Further, the element surface 20a of the solid-state image pickup element 20 is directly adhered via an optical adhesive. The right-angled prism 16 has its inclined surface 16b adhered to a prism holding base 17, and the prism holding base 17 is fixed to the rigid portion 11 via a fixing screw 18.
第３図は、固体撮像素子２０の素子面２０ａと直角プリ
ズム１６との接着の様子を模式的に示すもので、素子面
２０ａ上に、光学用接着剤１９を介して直角プリズム１
６が直接接着されている。固体撮像素子２０の素子面２
０ａは、この光学用接着剤１９により被覆され、外気に
触れることがない。FIG. 3 schematically shows how the element surface 20a of the solid-state imaging device 20 and the right-angle prism 16 are bonded. The right-angle prism 1 is provided on the element surface 20a with an optical adhesive 19 interposed therebetween.
6 is directly bonded. Element surface 2 of solid-state image sensor 20
0a is covered with this optical adhesive 19 and is not exposed to the outside air.
このように、固体撮像素子２０の素子面２０ａを、カバ
ーガラスを介することなく、直接直角プリズム１６に接
着すると、硬性部１１内のスペースに余裕が生まれる。
そして素子面２０ａは直角プリズム１６および光学用接
着剤によって保護され、外気に触れることがないため、
これが酸化したり、腐食したりするおそれがない。特に
内視鏡の消毒には、ホルマリンガス、エチレンオキサイ
ドガス等の腐食性のガスを用いるが、これらの消毒ガス
に対しても、酸化を防止できる。In this way, if the element surface 20a of the solid-state imaging element 20 is directly adhered to the right-angle prism 16 without the cover glass, a space is created in the rigid portion 11.
The element surface 20a is protected by the right-angle prism 16 and the optical adhesive and does not come into contact with the outside air.
There is no risk of this being oxidized or corroded. In particular, a corrosive gas such as formalin gas or ethylene oxide gas is used for disinfecting an endoscope, but the disinfection gas can be prevented from being oxidized.
また固体撮像素子２０は、これに対して駆動信号を与
え、かつその出力を取り出すための入出力端子２０ｂ、
２０ｃを、第１図、第２図のように、ライトガイド２１
の径方向の両側に配置している。このような配置にする
と、入出力端子２０ｂ、２０ｃに接続する信号線２２、
２２がライトガイド２１を両側から抱き抱える形となる
ため、ライトガイド２１の両側の空間を有効に利用する
ことができる。なおこの効果は、固体撮像素子２０が厚
くなり、その分だけ外径が太くなることを除けば、固体
撮像素子２０の素子面２０ａに直接プリズム１６を接着
しない場合、つまり素子面２０ａにカバーガラスを被せ
るタイプの従来の固体撮像素子を用いる場合にも、同様
に得ることができる。Further, the solid-state image pickup device 20 is provided with an input / output terminal 20b for giving a drive signal to the solid-state image pickup device 20 and extracting an output thereof.
20c as shown in FIG. 1 and FIG.
Are arranged on both sides in the radial direction. With this arrangement, the signal line 22 connected to the input / output terminals 20b and 20c,
Since the shape of 22 holds the light guide 21 from both sides, the spaces on both sides of the light guide 21 can be effectively used. Note that this effect is obtained when the prism 16 is not directly bonded to the element surface 20a of the solid-state imaging element 20, that is, the cover glass is attached to the element surface 20a, except that the solid-state imaging element 20 becomes thicker and the outer diameter becomes thicker accordingly. The same can be obtained when a conventional solid-state image sensor of the type that covers the above is used.
ライトガイド２１は、周知のように、内視鏡の外部の光
源装置からの照明光をカバーガラス１３に導き、被写体
を照明するものである。なおこの他の図示されている構
成要素を説明すると、鉗子チャンネル２４は、操作部か
ら挿入した各種の処置具や鉗子を硬性部１１の先端に導
いて突出させるもの、送気口２５および送水口２６は、
カバーガラス１２および１３の表面の汚れを除去するも
のである。As is well known, the light guide 21 guides illumination light from a light source device outside the endoscope to the cover glass 13 to illuminate a subject. Explaining the other illustrated components, the forceps channel 24 is a forceps channel 24 that guides various treatment tools or forceps inserted from the operating portion to the distal end of the rigid portion 11 to protrude, the air supply port 25 and the water supply port. 26 is
The dirt on the surfaces of the cover glasses 12 and 13 is removed.
第４図、第５図は、直視型の内視鏡に本発明を適用した
実施例を示す。この実施例は、カバーガラス１２を硬性
部１１の先端に設け、直角プリズム１４を省略したもの
で、直角プリズム１６と固体撮像素子２０の関係は、第
一の実施例と同一である。すなわち、素子面２０ａは、
直角プリズム１６と固体撮像素子２０を接着する光学用
接着剤によって覆われ、外気に触れることがない。4 and 5 show an embodiment in which the present invention is applied to a direct-viewing endoscope. In this embodiment, the cover glass 12 is provided at the tip of the rigid portion 11 and the right-angle prism 14 is omitted. The relationship between the right-angle prism 16 and the solid-state image sensor 20 is the same as that of the first embodiment. That is, the element surface 20a is
The right angle prism 16 and the solid-state image sensor 20 are covered with an optical adhesive that does not come into contact with the outside air.
この実施例では、観察像の左右の逆転を防止するため、
直角プリズム１６としてダハプリズムを用いるか、固体
撮像素子２０の出力信号の左右を電気的に反転するのが
望ましい。In this embodiment, in order to prevent left-right reversal of the observed image,
It is desirable to use a roof prism as the right-angle prism 16 or to electrically invert the left and right of the output signal of the solid-state imaging device 20.
またこの実施例では、固体撮像素子２０の入出力端子２
０ｂ、２０ｃの間に、鉗子チャンネル２４を配置してお
り、入出力端子２０ｂ、２０ｃに接続された信号線２
２、２２が、この鉗子チャンネル２４を両側から抱き抱
えるように配置されている。ライトガイド２１、送気口
２５、および送水口２６は、硬性部１１内に、例えば第
５図のように配置される。Further, in this embodiment, the input / output terminal 2 of the solid-state imaging device 20 is
The forceps channel 24 is arranged between 0b and 20c, and the signal line 2 connected to the input / output terminals 20b and 20c.
2, 22 are arranged so as to hold the forceps channel 24 from both sides. The light guide 21, the air supply port 25, and the water supply port 26 are arranged in the rigid portion 11 as shown in FIG. 5, for example.
「発明の効果」 以上のように本発明は、固体撮像素子を用いた内視鏡に
おいて、固体撮像素子の素子面を対物光学系中のプリズ
ムに対し光学用接着剤を介して直接接着し、該素子面が
外気に触れないように被覆したので、従来必要とされて
いたガス封止用のカバーガラスを不要として、素子面の
酸化防止、塵埃からの保護ができ、対物光学系の小型化
を図ることができる。また固体撮像素子の肉圧を薄くす
ることができるため、内視鏡の先端部分の有効配置が可
能となり、よって体内挿入部先端を小径に、かつ硬性部
を短くして患者の負担を軽減することができ、または他
の内蔵物の収容の可能性を高めて、内視鏡の性能を向上
させることができる。プリズムに塵埃が付着したとして
も、その塵埃は結像面の外にあるから、封止用カバーガ
ラスを用いる場合と同様に結像しない。また固体撮像素
子の入出力端子を、体内挿入部内に配置するライトガイ
ド、鉗子チャンネル等の長尺体の両側に位置させること
により、さらに先端部のスペースの有効利用を図ること
ができる。"Effects of the Invention" As described above, in the endoscope using the solid-state image sensor, the element surface of the solid-state image sensor is directly bonded to the prism in the objective optical system via the optical adhesive, Since the element surface is covered so that it does not come into contact with the outside air, the cover glass for gas sealing, which was required in the past, is no longer required, and the element surface can be prevented from oxidation and protected from dust, and the objective optical system can be made compact. Can be achieved. Moreover, since the wall pressure of the solid-state imaging device can be made thin, it is possible to effectively dispose the distal end portion of the endoscope, thereby reducing the diameter of the distal end of the body insertion portion and shortening the rigid portion to reduce the burden on the patient. Or otherwise the possibility of accommodating other internals can be increased to improve the performance of the endoscope. Even if dust is attached to the prism, since the dust is outside the image forming surface, it does not form an image as in the case where the sealing cover glass is used. Further, by arranging the input / output terminals of the solid-state image pickup device on both sides of the elongated body such as the light guide and the forceps channel arranged in the insertion portion in the body, it is possible to further effectively use the space of the tip portion.
第１図は本発明の内視鏡の実施例を示す要部の縦断面
図、第２図は第１図のII−II線に沿う断面図、第３図は
固体撮像素子の素子面とプリズムの接着状態を示す摸式
図、第４図は本発明の他の実施例を示す光学系統図、第
５図は第４図の実施例の場合の他の内蔵物の配置例を示
す、第２図に対応する断面図である。 １１……硬性部（体内挿入部先端）、１２、１３……カ
バーガラス、１５……対物レンズ、１６……直角プリズ
ム、１９……光学用接着剤、２０……固体撮像素子、２
０ａ……素子面、２０ｂ、２０ｃ……入出力端子、２１
……ライトガイド、２２……信号線、２４……鉗子チャ
ンネル。FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of an endoscope of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. FIG. 4 is a schematic diagram showing a bonded state of a prism, FIG. 4 is an optical system diagram showing another embodiment of the present invention, and FIG. 5 is a layout example of other built-in objects in the case of the embodiment of FIG. It is sectional drawing corresponding to FIG. 11 ... Hard part (tip in body insertion part), 12, 13 ... Cover glass, 15 ... Objective lens, 16 ... Right angle prism, 19 ... Optical adhesive, 20 ... Solid-state image sensor, 2
0a: element surface, 20b, 20c: input / output terminal, 21
...... Light guide, 22 …… Signal line, 24 …… Forceps channel.
Claims (2)
と、この対物レンズの結像面に位置する固体撮像素子と
を設けた内視鏡において、 上記対物レンズからの光を固体撮像素子に向けて屈曲す
るプリズムを設け、 かつこのプリズムを、上記固体撮像素子の素子面上に光
学用接着剤を介して直接接着し、該光学用接着剤により
該素子面が外気に触れないように被覆したことを特徴と
する内視鏡の先端部構造。1. An endoscope in which an objective lens and a solid-state image pickup device located on an image forming surface of the objective lens are provided at a tip of an insertion portion of the endoscope in a body, wherein light from the objective lens is solid-stated. A prism that bends toward the image sensor is provided, and this prism is directly adhered to the element surface of the solid-state image sensor via an optical adhesive, and the optical surface does not touch the element surface with the optical adhesive. The distal end structure of an endoscope characterized by being coated as described above.
素子の入出力端子は、体内挿入部内に配置したライトガ
イド、鉗子チャンネル等の長尺体の両側に位置させて配
置されている内視鏡の先端部構造。2. The input / output terminal of the solid-state image pickup device according to claim 1, wherein the input / output terminals are arranged on both sides of a long body such as a light guide and a forceps channel arranged inside the body insertion portion. The structure of the tip of the endoscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60096533A JPH0629911B2 (en) | 1985-05-07 | 1985-05-07 | End tip structure of endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60096533A JPH0629911B2 (en) | 1985-05-07 | 1985-05-07 | End tip structure of endoscope |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9003710A Division JP2818154B2 (en) | 1997-01-13 | 1997-01-13 | Endoscope tip structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61254917A JPS61254917A (en) | 1986-11-12 |
| JPH0629911B2 true JPH0629911B2 (en) | 1994-04-20 |
Family
ID=14167765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60096533A Expired - Lifetime JPH0629911B2 (en) | 1985-05-07 | 1985-05-07 | End tip structure of endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0629911B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0731211Y2 (en) * | 1985-08-16 | 1995-07-19 | 富士写真光機株式会社 | Endoscope |
| JP2839188B2 (en) * | 1987-06-04 | 1998-12-16 | オリンパス光学工業株式会社 | Solid-state imaging device |
| JPH04126216U (en) * | 1991-05-02 | 1992-11-17 | オリンパス光学工業株式会社 | Endoscope |
| US20110034769A1 (en) | 1997-10-06 | 2011-02-10 | Micro-Imaging Solutions Llc | Reduced area imaging device incorporated within wireless endoscopic devices |
| US7142242B2 (en) | 2001-10-16 | 2006-11-28 | Victor Company Of Japan, Ltd. | Prismatic image forming optical device adapted for miniaturization |
| JP5041925B2 (en) | 2007-08-31 | 2012-10-03 | オリンパスメディカルシステムズ株式会社 | Imaging unit |
| JP2009288682A (en) | 2008-05-30 | 2009-12-10 | Olympus Medical Systems Corp | Objective optical system for endoscopes |
| JP5386567B2 (en) | 2011-11-15 | 2014-01-15 | 株式会社フジクラ | Imaging device chip mounting method, endoscope assembling method, imaging module, and endoscope |
| DE102012110905A1 (en) * | 2012-11-13 | 2014-05-15 | Karl Storz Gmbh & Co. Kg | Observation instrument with a high-resolution imager |
| EP3097843A4 (en) * | 2014-08-05 | 2017-10-25 | Olympus Corporation | Endoscope |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6032782Y2 (en) * | 1979-05-14 | 1985-09-30 | 松下電器産業株式会社 | solid state imaging device |
| JPS574178A (en) * | 1980-06-09 | 1982-01-09 | Toshiba Corp | Method and apparatus for assembling solid pickup device |
| JPS6240438Y2 (en) * | 1980-06-27 | 1987-10-16 | ||
| JPS6026918A (en) * | 1983-07-23 | 1985-02-09 | Fuji Photo Optical Co Ltd | Objective optical system for endoscope |
-
1985
- 1985-05-07 JP JP60096533A patent/JPH0629911B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61254917A (en) | 1986-11-12 |
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