JPH0670882A - Tip part of electronic endoscope - Google Patents

Tip part of electronic endoscope

Info

Publication number
JPH0670882A
JPH0670882A JP4227094A JP22709492A JPH0670882A JP H0670882 A JPH0670882 A JP H0670882A JP 4227094 A JP4227094 A JP 4227094A JP 22709492 A JP22709492 A JP 22709492A JP H0670882 A JPH0670882 A JP H0670882A
Authority
JP
Japan
Prior art keywords
prism
solid
joined
state image
tip
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
Application number
JP4227094A
Other languages
Japanese (ja)
Other versions
JP3193470B2 (en
Inventor
Keiji Itou
慶時 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP22709492A priority Critical patent/JP3193470B2/en
Publication of JPH0670882A publication Critical patent/JPH0670882A/en
Application granted granted Critical
Publication of JP3193470B2 publication Critical patent/JP3193470B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To provide the tip part of the electronic endoscope, by which an adhesive does not ooze out into a visual field range, a prism and a solidstate image pickup element can be fixed surely, and also, the tip of an inserting part does not become thick. CONSTITUTION:In the tip part of the electronic endoscope, in which the emitting surface 24a of a prism 24 arranged in the rear end of an objective optical system 20 and the image receiving surface 31a of a solid-state image pickup element 31 are fixed so as to be opposed to each other, in the tip 11 of an inserting part, a frame body 34 bent and formed on the side face side of the prism 24 from the opposed face is joined to the prism 24 in the side face part, and also, a frame body 33 bent and formed on the side face side of the solid-state image pickup element 31 is joined to the solid-state image pickup element 31 in the side face part, and also, each of both the frame bodies 33, 34 is joined in each opposed face.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、内視鏡の挿入部先端
内に固体撮像素子を内蔵したいわゆる電子内視鏡の先端
部に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distal end portion of a so-called electronic endoscope in which a solid-state image pickup device is incorporated in a distal end portion of an insertion portion of the endoscope.

【0002】[0002]

【従来の技術】従来の電子内視鏡においては、挿入部先
端内において、対物光学系の後端に配置されたプリズム
の出射面と固体撮像素子の受像面とをあい対向させて、
両者を直接接合するか、或いは光路部を切り欠いた平ら
な一枚の薄板を介して接合していた。
2. Description of the Related Art In a conventional electronic endoscope, the exit surface of a prism disposed at the rear end of an objective optical system and the image receiving surface of a solid-state image sensor are faced to each other in the tip of an insertion portion,
Either of them was directly joined, or they were joined through a flat thin plate with a cutout in the optical path.

【0003】[0003]

【発明が解決しようとする課題】しかし一般に、内視鏡
挿入部の先端はできるだけ細く形成する必要があるの
で、プリズムは光路がけられない程度にぎりぎりに小さ
く形成される。
However, in general, since the tip of the endoscope insertion portion needs to be formed as thin as possible, the prism is formed as small as possible so that the optical path cannot be blocked.

【0004】したがって、プリズムを固体撮像素子と直
接接合するにしろ薄板を介して接合するにしろ、いずれ
にしてもプリズムの接着しろが非常に小さいために、充
分な接着強度を得るのは困難であった。
Therefore, whether the prism is directly bonded to the solid-state image sensor or bonded through a thin plate, in any case, it is difficult to obtain sufficient bonding strength because the bonding margin of the prism is very small. there were.

【0005】そのため、固体撮像素子にケーブル等を介
して伝えられるいろいろな方向の力や経時変化等によっ
て接着面が剥がれ、内視鏡が使用不能になってしまうこ
とがあった。
Therefore, the adhesive surface may be peeled off due to various directions of force transmitted to the solid-state image pickup device through a cable or the like, aging, etc., and the endoscope may become unusable.

【0006】また、光路部が切り欠かれた薄板は光路部
の周辺に形成される接着しろが小さいので、接着剤が視
野範囲内にしみ出して、対物ユニットが不良品になって
しまうことも少なくなかった。
Further, since the thin plate having the optical path portion cut out has a small adhesive margin formed around the optical path portion, the adhesive may exude into the visual field range, resulting in a defective objective unit. Not a few.

【0007】そこで本発明は、接着剤が視野範囲内にし
み出さずにプリズムと固体撮像素子とを確実に固着する
ことができ、しかも挿入部先端が太くならない電子内視
鏡の先端部を提供することを目的とする。
Therefore, the present invention provides a tip portion of an electronic endoscope capable of securely fixing the prism and the solid-state image sensor without the adhesive oozing out in the visual field range, and the tip of the insertion portion does not become thick. The purpose is to do.

【0008】[0008]

【課題を解決するための手段】上記の目的を達成するた
め、本発明の電子内視鏡の先端部は、挿入部先端内にお
いて、対物光学系の後端に配置されたプリズムの出射面
と固体撮像素子の受像面とをあい対向させて固着するよ
うにした電子内視鏡の先端部において、上記対向面から
上記プリズムの側面側に折り曲げ形成された枠体を上記
プリズムと側面部において接合すると共に上記対向面か
ら上記固体撮像素子の側面側に折り曲げ形成された枠体
を上記固体撮像素子と側面部において接合し、さらに上
記両枠体どうしをあい対向する面において接合したこと
を特徴とする。
In order to achieve the above object, the tip portion of the electronic endoscope of the present invention is provided with an exit surface of a prism arranged at the rear end of the objective optical system in the tip portion of the insertion portion. At the tip of the electronic endoscope, which is fixed to face the image receiving surface of the solid-state image sensor, the frame body bent from the facing surface to the side surface of the prism is joined to the prism at the side surface. A frame body bent and formed from the facing surface to the side surface side of the solid-state image sensor is joined to the solid-state image sensor at the side surface portion, and further, the two frame bodies are joined to each other at a facing surface. To do.

【0009】[0009]

【実施例】図面を参照して実施例を説明する。図2は電
子内視鏡の先端部の正面図、図3はそのIII−III断面図
である。
Embodiments will be described with reference to the drawings. 2 is a front view of the tip of the electronic endoscope, and FIG. 3 is a III-III sectional view thereof.

【0010】図3において、1は、挿入部を形成する細
長い可撓管の先端に形成された湾曲部であり、複数の節
輪2がリベットによって回動自在に連結されている。そ
の外周は、金属細線製の網状管4及びゴム製の外被チュ
ーブ5によって被覆されている。
In FIG. 3, reference numeral 1 denotes a curved portion formed at the tip of an elongated flexible tube forming an insertion portion, and a plurality of node rings 2 are rotatably connected by rivets. The outer circumference thereof is covered with a mesh tube 4 made of thin metal wires and a jacket tube 5 made of rubber.

【0011】遠隔的に牽引操作される湾曲操作ワイヤ7
は、各節輪2から内方に突設されたワイヤガイド8内に
進退自在に挿通されている。そして、各湾曲操作ワイヤ
7の先端は、最先端のワイヤガイド8に銀ロー付けによ
って固着されている。9は、最先端のワイヤガイド8の
端部に銀ロー付けなどによって固着された、抜け止め用
のストッパパイプである。
A bending operation wire 7 which is remotely pulled.
Is inserted into the wire guide 8 projecting inwardly from each node ring 2 so as to be able to move back and forth. The tip of each bending operation wire 7 is fixed to the most advanced wire guide 8 by silver brazing. Reference numeral 9 denotes a stopper pipe that is fixed to the end portion of the most advanced wire guide 8 by silver brazing or the like to prevent it from coming off.

【0012】11は、連結筒12を介して湾曲部1の先
端に連結された先端部本体であり、金属製の胴部11b
と、その先端部分に接合された電気絶縁性プラスチック
製の頭部11aとにより形成されている。
Reference numeral 11 denotes a tip portion main body connected to the tip of the bending portion 1 through a connecting tube 12, and a metal body portion 11b.
And a head portion 11a made of an electrically insulating plastic and joined to the tip portion thereof.

【0013】先端部本体11は、先端側(図3で左方)
から見て円形の断面形状をしており、その内部に対物光
学系20が内蔵されている。対物光学系20は、複数の
レンズからなる対物レンズ群21と、色補正フィルタ2
2と、水晶板からなるローパスフィルタ23と直角プリ
ズム24とが前側から順次配置されて構成されている。
The tip body 11 is on the tip side (left side in FIG. 3).
It has a circular cross-sectional shape when viewed from the inside, and the objective optical system 20 is incorporated therein. The objective optical system 20 includes an objective lens group 21 including a plurality of lenses and a color correction filter 2
2, a low-pass filter 23 made of a crystal plate, and a rectangular prism 24 are sequentially arranged from the front side.

【0014】対物レンズ群21の軸方向は先端部本体1
1の軸方向と一致していて、前方の物体が被写体とな
る。観察窓14には、対物光学系20の最先端のレンズ
が嵌め込まれて接合されている。
The axial direction of the objective lens group 21 is in the front end main body 1
The object in front of the object, which coincides with the axial direction of 1, is the subject. The most advanced lens of the objective optical system 20 is fitted and joined to the observation window 14.

【0015】15及び16は、接合レンズを含む対物レ
ンズ群21が嵌め込み接着された鏡枠。17は明るさ絞
り。18はシール用のOリングである。図2に示される
27は照明窓であり、照明用ライトガイドファイババン
ドル中を伝送されてきた照明光がここから外方に放射さ
れて、先端部本体11の前方の被写体が照明される。2
8及び29は送気送水ノズル。30は鉗子チャンネルの
出口である。
Reference numerals 15 and 16 are lens frames to which an objective lens group 21 including a cemented lens is fitted and adhered. 17 is an aperture stop. Reference numeral 18 is an O-ring for sealing. Reference numeral 27 shown in FIG. 2 is an illumination window, and the illumination light transmitted through the illumination light guide fiber bundle is radiated outwardly from this to illuminate the subject in front of the tip end main body 11. Two
8 and 29 are air supply / water supply nozzles. 30 is an outlet of the forceps channel.

【0016】図3に示されるように、先端部本体11の
胴部11b内には、固体撮像素子31が配置されてい
る。固体撮像素子31としては、例えばCCD(電荷結
合素子)が用いられる。
As shown in FIG. 3, a solid-state image pickup device 31 is arranged in the body portion 11b of the tip portion main body 11. As the solid-state image sensor 31, for example, a CCD (charge coupled device) is used.

【0017】固体撮像素子31の受像面31aは正方形
又は長方形に形成されていて、対物レンズ群21の光軸
に対して平行に配置されている。そして、対物レンズ群
21と固体撮像素子31との間に配置された直角プリズ
ム24によって、対物光学系20の光軸が、固体撮像素
子31の受像面31aの中心に垂直に交わるように、直
角方向に反射されている。
An image receiving surface 31a of the solid-state image pickup device 31 is formed in a square shape or a rectangular shape, and is arranged parallel to the optical axis of the objective lens group 21. Then, a right-angle prism 24 disposed between the objective lens group 21 and the solid-state image sensor 31 makes a right angle so that the optical axis of the objective optical system 20 intersects perpendicularly with the center of the image receiving surface 31 a of the solid-state image sensor 31. Is reflected in the direction.

【0018】直角プリズム24と対物レンズ群21との
間には、鏡枠16の後半部分に接続された接続筒19内
に、遮光用マスク25と色補正フィルタ22とローパス
フィルタ23とが互いに接合されて介挿され、直角プリ
ズム24とローパスフィルタ23も互いに接合されてい
る。
Between the right-angle prism 24 and the objective lens group 21, a light-shielding mask 25, a color correction filter 22, and a low-pass filter 23 are bonded to each other in a connecting cylinder 19 connected to the latter half of the lens frame 16. The right-angle prism 24 and the low-pass filter 23 are also joined to each other.

【0019】なお、図4に示されるように、接続筒19
は四隅を丸めた四角筒状に形成されており、その中に収
容されている各部品も同形状に形成されている。そし
て、ローパスフィルタ23の後端外縁部には、図3に示
されるように、全周にわたって面取りが施されてそこに
黒色の接着剤26が充填され、余分な光を遮ってゴース
ト等の発生を防いでいる。
Incidentally, as shown in FIG.
Is formed in a square tubular shape with rounded four corners, and each of the components housed therein is also formed in the same shape. Then, as shown in FIG. 3, the outer peripheral portion of the rear end of the low-pass filter 23 is chamfered over the entire circumference and filled with a black adhesive 26 to block excess light and generate a ghost or the like. Is preventing.

【0020】このような配置により、図3の左方の被写
体の像が、対物光学系20によって固体撮像素子31の
受像面31aに結像する。42は、固体撮像素子31の
信号処理を行うための電子部品(図示せず)を取り付け
た可撓性のある回路基板42であり、信号ケーブル43
の先端部分にはんだ付けによって固着接続されている。
With this arrangement, the image of the subject on the left side of FIG. 3 is formed on the image receiving surface 31a of the solid-state image pickup device 31 by the objective optical system 20. Reference numeral 42 denotes a flexible circuit board 42 on which electronic components (not shown) for performing signal processing of the solid-state image sensor 31 are attached, and a signal cable 43.
Is fixedly connected by soldering to the tip of the.

【0021】回路基板42の先端側には固体撮像素子3
1が固着されており、その裏側には絶縁材31bが塗布
されている。固体撮像素子31は、ヘッダ部を前後に配
置して、横幅に比べて前後方向に長い直方体状に形成さ
れている。
The solid-state image sensor 3 is provided on the tip side of the circuit board 42.
1 is fixed, and an insulating material 31b is applied to the back side thereof. The solid-state imaging device 31 has header portions arranged in front and rear, and is formed in a rectangular parallelepiped shape that is longer in the front-rear direction than the width.

【0022】そして、固体撮像素子31の受像面31a
側に接合された枠体(素子側枠体)33が直角プリズム
24に接合された枠体(プリズム側枠体)34と接合さ
れていて、それによって、固体撮像素子31の受像面3
1aと直角プリズム24の出射面24aとがあい対向し
て固着されている。
Then, the image receiving surface 31a of the solid-state image pickup device 31.
The frame body (element side frame body) 33 joined to the side is joined to the frame body (prism side frame body) 34 joined to the right-angled prism 24, whereby the image receiving surface 3 of the solid-state imaging device 31 is joined.
1a and the emission surface 24a of the right-angle prism 24 face each other and are fixed to each other.

【0023】回路基板42は、図5にも示されるよう
に、コの字状に曲げられてその周囲をシールドテープ4
4と絶縁テープ45によって被覆され、内部空間にはエ
ポキシ系の接着剤60が充填されて変形しないように固
められている。
As shown in FIG. 5, the circuit board 42 is bent into a U-shape and the periphery thereof is covered with the shield tape 4.
4 and the insulating tape 45, and the internal space is filled with an epoxy adhesive 60 and hardened so as not to be deformed.

【0024】このようにして、対物光学系20と固体撮
像素子31と回路基板42と信号ケーブル43とが全体
として一体的に一つのユニットとして形成され、連結筒
12に、上下一対の押さえ板46を介して、固定ねじ5
2によって固定されている。
In this way, the objective optical system 20, the solid-state image pickup device 31, the circuit board 42 and the signal cable 43 are integrally formed as one unit as a whole, and the connecting cylinder 12 is provided with a pair of upper and lower pressing plates 46. Through the fixing screw 5
It is fixed by 2.

【0025】図6及び図7は、対物光学系20と固体撮
像素子31とを接合した部分を示しており、図1は、そ
の接合前の状態を示している。素子側枠体33は、薄い
金属板をコの字状に折り曲げて黒色処理を施して形成さ
れており、固体撮像素子31の表面をカバーガラス31
cに密着して覆い、さらにそこから固体撮像素子31の
前後の側面に沿って折り曲げられ、その側面部(図1の
斜線部)で固体撮像素子31と接合されている。したが
って、接着剤が受像面31a側にしみ出すことなく、広
い接着面積で確実に接合することができる。
6 and 7 show a portion where the objective optical system 20 and the solid-state image pickup device 31 are joined, and FIG. 1 shows a state before the joining. The element-side frame body 33 is formed by bending a thin metal plate into a U-shape and subjecting it to black processing.
It is closely adhered to and covered with c, is further bent along the front and rear side surfaces of the solid-state image sensor 31, and is joined to the solid-state image sensor 31 at the side surface (hatched portion in FIG. 1). Therefore, the adhesive does not seep out to the image receiving surface 31a side, and the bonding can be reliably performed with a wide bonding area.

【0026】ただし、固体撮像素子31の受像面31a
の正面部分には、受像面31aに入射する光像を遮らな
いように、素子側枠体33に窓33aが穿設されてい
る。この窓33aは、直角プリズム24の出射面24a
より僅かに小さく形成されており、直角プリズム24の
出射面24aが窓33aの周辺部分33bに当接してい
る。そして、その前方及び後方の固体撮像素子31のヘ
ッダ部の表面には、素子側枠体33が平らに載ってい
る。
However, the image receiving surface 31a of the solid-state image pickup device 31
A window 33a is formed in the front side of the element side frame 33 so as not to block the light image incident on the image receiving surface 31a. The window 33a is provided on the exit surface 24a of the right-angle prism 24.
The output surface 24a of the right-angle prism 24 is in contact with the peripheral portion 33b of the window 33a. The element-side frame body 33 is laid flat on the front surface of the header portion of the solid-state image pickup element 31.

【0027】プリズム側枠体34は、やはり薄い金属板
をコの字状に曲げて黒色処理を施して形成されており、
直角プリズム24の出射面24a側からその両側部側に
折り曲げられ、その側面部(図1の斜線部)で直角プリ
ズム24と接合されている。したがって、接着剤が直角
プリズム24の出射面24a側にしみ出すことなく、広
い接着面積で確実に接合することができる。
The prism side frame 34 is also formed by bending a thin metal plate into a U shape and subjecting it to black processing.
The right-angle prism 24 is bent from the exit surface 24a side to both sides thereof, and is joined to the right-angle prism 24 at its side surface portion (hatched portion in FIG. 1). Therefore, the adhesive does not seep out to the exit surface 24a side of the right-angled prism 24, and the bonding can be reliably performed with a wide bonding area.

【0028】プリズム側枠体34の中央部分には、直角
プリズム24の出射面24aより大きな窓34aが穿設
されており、その窓34aの側端は、プリズム側枠体3
4の折り曲げ部を越えて側面部にまで至っている。
A window 34a larger than the exit surface 24a of the right-angle prism 24 is formed in the central portion of the prism side frame 34, and the side end of the window 34a is formed at the prism side frame 3.
It extends to the side part beyond the bent part of 4.

【0029】そして、直角プリズム24はその窓34a
内に通されて、直角プリズム24の出射面24aが、プ
リズム側枠体34の表面と同一面かそれより僅かに出っ
張るように位置決めされている。
The right angle prism 24 has its window 34a.
The exit surface 24a of the right-angled prism 24 is positioned so that the exit surface 24a of the right-angled prism 24 is flush with the surface of the prism side frame 34 or slightly protrudes therefrom.

【0030】したがって、素子側枠体33とプリズム側
枠体34とを接合させた状態では、直角プリズム24の
底面が素子側枠体33の表面に確実に当接して、プリズ
ム側枠体34の板厚や平面性が光学性能に影響しない。
Therefore, in the state where the element-side frame body 33 and the prism-side frame body 34 are joined, the bottom surface of the right-angled prism 24 surely contacts the surface of the element-side frame body 33, and the prism-side frame body 34 The plate thickness and flatness do not affect the optical performance.

【0031】このプリズム側枠体34は、素子側枠体3
3の平面部の形状に合わせて、直角プリズム24の出射
面24aよりも前後方向に長く形成されている。その結
果、両枠体33,34は、直角プリズム24の出射面2
4aと固体撮像素子31の受像面31aを避けて、その
前後両側において比較的広い面積であい対向する。
This prism side frame 34 is the element side frame 3
In conformity with the shape of the flat surface portion of No. 3, the rectangular prism 24 is formed to be longer in the front-back direction than the emission surface 24a. As a result, both the frames 33, 34 are arranged so that the exit surface 2 of the rectangular prism 24 is
4a and the image receiving surface 31a of the solid-state image pickup device 31, avoiding a relatively wide area on both front and rear sides thereof.

【0032】したがって、両枠体33,34を対向面で
接合する場合には、図8に斜線で示される接合部を、両
枠体33,34の窓33a,34aから離れた位置にお
いて広い面積をとることができる。したがって、接着剤
が内側の観察視野内にしみ出すことなく、両枠体33,
34を確実に接合することができる。
Therefore, when the two frame bodies 33 and 34 are joined to each other on the opposite surfaces, the joint portion shown by hatching in FIG. 8 has a large area at a position away from the windows 33a and 34a of the both frame bodies 33 and 34. Can be taken. Therefore, the adhesive does not seep out into the inside observation field,
34 can be reliably joined.

【0033】なお、両枠体33,34を接合する際に
は、直角プリズム24側ユニットと固体撮像素子31側
ユニットとの芯出しをしておき、直角プリズム24の出
射面24aの周囲には、ゴミの侵入防止のために粘度の
高い接着剤を少量塗布する。
When the two frames 33, 34 are joined together, the unit of the right-angle prism 24 and the unit of the solid-state image pickup device 31 are centered, and the exit surface 24a of the right-angle prism 24 is surrounded. , Apply a small amount of highly viscous adhesive to prevent dust from entering.

【0034】このようにして、図9に示されるように、
直角プリズム24のユニットと固体撮像素子31のユニ
ットとが接合されたら、対物レンズ群21のユニットの
鏡枠16と接続筒19とをピント調整をした状態に接合
する。
In this way, as shown in FIG.
After the unit of the right-angle prism 24 and the unit of the solid-state image sensor 31 are joined, the lens frame 16 of the unit of the objective lens group 21 and the connecting tube 19 are joined in a state where the focus is adjusted.

【0035】そして、図10に示されるように全体とし
て一つに形成されたユニットを先端部本体11に組み込
む。
Then, as shown in FIG. 10, the unit which is integrally formed as a whole is incorporated into the tip portion main body 11.

【0036】[0036]

【発明の効果】本発明の電子内視鏡の先端部によれば、
プリズムと固体撮像素子の各々の側面部に接合した枠体
どうしを対向面において接合したので、各接着部におい
て、接着剤が観察視野内にしみ出さないように光路部分
と距離をとって広い接着面積で確実な接着を行うことが
でき、枠体は薄板状でスペースをとらないので、挿入部
先端を太くすることなく細径に形成することができる。
According to the tip of the electronic endoscope of the present invention,
Since the prisms and the frame bodies that are bonded to the side surfaces of the solid-state image sensor are bonded to each other at the opposing surfaces, a wide bond is made at each bonded part with a distance from the optical path part so that the adhesive does not seep out into the observation field of view. Since reliable bonding can be performed in the area and the frame body is thin and does not occupy a space, it can be formed to have a small diameter without thickening the tip of the insertion portion.

【図面の簡単な説明】[Brief description of drawings]

【図1】実施例の部分分解斜視図である。FIG. 1 is a partially exploded perspective view of an embodiment.

【図2】実施例の正面図である。FIG. 2 is a front view of the embodiment.

【図3】実施例のIII−III断面図である。FIG. 3 is a sectional view taken along line III-III of the example.

【図4】実施例のIV−IV断面図である。FIG. 4 is a sectional view taken along line IV-IV of the embodiment.

【図5】実施例のV−V断面図である。FIG. 5 is a sectional view taken along line VV of the example.

【図6】実施例の一部を切除した部分拡大側面図であ
る。
FIG. 6 is a partially enlarged side view in which a part of the example is removed.

【図7】実施例の一部を切除した部分拡大正面図であ
る。
FIG. 7 is a partially enlarged front view in which a part of the example is removed.

【図8】実施例の組立工程図である。FIG. 8 is an assembly process diagram of the embodiment.

【図9】実施例の組立工程図である。FIG. 9 is an assembly process diagram of an example.

【図10】実施例の組立工程図である。FIG. 10 is an assembly process diagram of an example.

【符号の説明】[Explanation of symbols]

11 先端部本体 20 対物光学系 24 プリズム 24a 出射面 31 固体撮像素子 31a 受像面 33 素子側枠体 34 プリズム側枠体 11 Tip Part Main Body 20 Objective Optical System 24 Prism 24a Emitting Surface 31 Solid-State Image Sensor 31a Image Receiving Surface 33 Element Side Frame 34 Prism Side Frame

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】挿入部先端内において、対物光学系の後端
に配置されたプリズムの出射面と固体撮像素子の受像面
とをあい対向させて固着するようにした電子内視鏡の先
端部において、 上記対向面から上記プリズムの側面側に折り曲げ形成さ
れた枠体を上記プリズムと側面部において接合すると共
に上記対向面から上記固体撮像素子の側面側に折り曲げ
形成された枠体を上記固体撮像素子と側面部において接
合し、さらに上記両枠体どうしをあい対向する面におい
て接合したことを特徴とする電子内視鏡の先端部。
1. A front end portion of an electronic endoscope in which an exit surface of a prism arranged at a rear end of an objective optical system and an image receiving surface of a solid-state image pickup device are faced to each other and fixed in the front end of an insertion portion. In the solid-state imaging, the frame body bent from the facing surface to the side surface side of the prism is joined to the prism at the side surface portion, and the frame body bent from the facing surface to the side surface side of the solid-state image sensor is joined. A tip portion of an electronic endoscope, wherein the tip portion of the electronic endoscope is joined to the element at a side surface portion, and further, is joined at a surface where the frame bodies are opposed to each other.
JP22709492A 1992-08-26 1992-08-26 Electronic endoscope tip Expired - Fee Related JP3193470B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22709492A JP3193470B2 (en) 1992-08-26 1992-08-26 Electronic endoscope tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22709492A JP3193470B2 (en) 1992-08-26 1992-08-26 Electronic endoscope tip

Publications (2)

Publication Number Publication Date
JPH0670882A true JPH0670882A (en) 1994-03-15
JP3193470B2 JP3193470B2 (en) 2001-07-30

Family

ID=16855399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22709492A Expired - Fee Related JP3193470B2 (en) 1992-08-26 1992-08-26 Electronic endoscope tip

Country Status (1)

Country Link
JP (1) JP3193470B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6491378B2 (en) 1998-12-08 2002-12-10 Seiko Epson Corporation Ink jet head, ink jet printer, and its driving method
US6511419B2 (en) * 2000-09-29 2003-01-28 Fuji Photo Optical Co., Ltd. Endoscope tip part with no swell at outer skin fixing part
WO2005067783A1 (en) * 2004-01-19 2005-07-28 Olympus Corporation Imaging device for endoscope and capsule type endoscope
WO2011092901A1 (en) * 2010-02-01 2011-08-04 オリンパスメディカルシステムズ株式会社 Image pickup unit for endoscope
WO2013031276A1 (en) * 2011-08-30 2013-03-07 オリンパスメディカルシステムズ株式会社 Endoscope image capture unit
JP2013075026A (en) * 2011-09-30 2013-04-25 Fujifilm Corp Camera module for endoscope, and the endoscope
JP2016007374A (en) * 2014-06-25 2016-01-18 富士フイルム株式会社 Imaging apparatus
JP2019165372A (en) * 2018-03-20 2019-09-26 株式会社リコー Imaging sensor fixing structure

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6491378B2 (en) 1998-12-08 2002-12-10 Seiko Epson Corporation Ink jet head, ink jet printer, and its driving method
US6511419B2 (en) * 2000-09-29 2003-01-28 Fuji Photo Optical Co., Ltd. Endoscope tip part with no swell at outer skin fixing part
WO2005067783A1 (en) * 2004-01-19 2005-07-28 Olympus Corporation Imaging device for endoscope and capsule type endoscope
US7998059B2 (en) 2004-01-19 2011-08-16 Olympus Corporation Endoscopic imaging apparatus and capsule-type endoscope
US8152713B2 (en) 2004-01-19 2012-04-10 Olympus Corporation Capsule endoscope with illumination board section and method of assembling
WO2011092901A1 (en) * 2010-02-01 2011-08-04 オリンパスメディカルシステムズ株式会社 Image pickup unit for endoscope
JP5080695B2 (en) * 2010-02-01 2012-11-21 オリンパスメディカルシステムズ株式会社 Endoscope imaging unit
US8913112B2 (en) 2010-02-01 2014-12-16 Olympus Medical Systems Corp. Image pickup unit for endoscope
WO2013031276A1 (en) * 2011-08-30 2013-03-07 オリンパスメディカルシステムズ株式会社 Endoscope image capture unit
JP2013075026A (en) * 2011-09-30 2013-04-25 Fujifilm Corp Camera module for endoscope, and the endoscope
JP2016007374A (en) * 2014-06-25 2016-01-18 富士フイルム株式会社 Imaging apparatus
JP2019165372A (en) * 2018-03-20 2019-09-26 株式会社リコー Imaging sensor fixing structure

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