JPH0224095Y2 - - Google Patents
Info
- Publication number
- JPH0224095Y2 JPH0224095Y2 JP1983150094U JP15009483U JPH0224095Y2 JP H0224095 Y2 JPH0224095 Y2 JP H0224095Y2 JP 1983150094 U JP1983150094 U JP 1983150094U JP 15009483 U JP15009483 U JP 15009483U JP H0224095 Y2 JPH0224095 Y2 JP H0224095Y2
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- observation
- optical system
- endoscope
- distal end
- 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
- 230000003287 optical effect Effects 0.000 claims description 27
- 230000037431 insertion Effects 0.000 claims description 22
- 238000003780 insertion Methods 0.000 claims description 22
- 238000003384 imaging method Methods 0.000 claims description 15
- 238000005286 illumination Methods 0.000 description 11
- 238000011282 treatment Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Description
【考案の詳細な説明】
［考案の技術分野］
本考案は、挿入部先端の側方周囲の観察が可能
な内視鏡に係り、観察範囲の画角や観察対象の倍
率を可変し得るようにした周囲観察内視鏡に関す
るものである。[Detailed description of the invention] [Technical field of the invention] The present invention relates to an endoscope that allows observation of the lateral surroundings of the tip of the insertion tube, and is capable of varying the angle of view of the observation range and the magnification of the observation target. This paper relates to a peripheral observation endoscope.
［考案の背景技術とその問題点］
一般に内視鏡は、手元側の把持部を兼ねた操作
部と、この操作部から前方挿入方向へ延設され体
腔内、管腔内等へ挿入される挿入部とからなり、
前記操作部ないし挿入部に照明光学系と観察光学
系とを内設している。そして、例えば外部の光源
装置から照明光学系に照明光を供給して前記挿入
部先端の出射端から照明光を体腔内、管腔内等の
被写体に照射し、その被写体からの反射光を前記
挿入部先端の観察窓から観察光学系に入射して結
像し、操作部に設けた接眼部で直接観察し、或は
前記結像を光電変換してモニタに表示して観察
し、体腔内或は管腔内等の検査や種々の処置を行
えるようになつている。又、前記内視鏡挿入部に
は、可撓性を有して曲がりくねつた体腔内、管腔
内へ挿入可能な軟性の内視鏡と、硬性である硬性
の内視鏡とがある。更に、内視鏡には、体腔内の
検査、処置を行う医療用内視鏡と、化学プラン
ト、熱交換器等の配管内、タービン内、電子炉内
等に挿入しこれらの管・腔内を点検、処置する工
業用内視鏡とがある。そして、本考案は前記いず
れの内視鏡にも適用される。[Background technology of the invention and its problems] In general, an endoscope has an operating section on the proximal side that also serves as a gripping section, and an endoscope that extends from this operating section in the forward insertion direction and is inserted into a body cavity, a lumen, etc. It consists of an insertion section,
An illumination optical system and an observation optical system are installed in the operation section or the insertion section. Then, for example, illumination light is supplied from an external light source device to the illumination optical system, and the illumination light is irradiated from the emission end of the distal end of the insertion portion to a subject such as a body cavity or a lumen, and the reflected light from the subject is reflected from the An image is formed by entering the observation optical system through the observation window at the tip of the insertion tube, and is directly observed with an eyepiece provided in the operation section, or the image is photoelectrically converted and displayed on a monitor for observation. It is now possible to perform internal or intraluminal examinations and various treatments. The endoscope insertion section includes a flexible endoscope that is flexible and can be inserted into a winding body cavity or lumen, and a rigid endoscope that is rigid. Furthermore, endoscopes include medical endoscopes that perform inspections and treatments inside body cavities, and medical endoscopes that can be inserted into pipes such as chemical plants, heat exchangers, turbines, electronic furnaces, etc. There is an industrial endoscope that inspects and treats. The present invention is also applicable to any of the endoscopes mentioned above.
ところで、前記内視鏡には、挿入部軸方向を視
野方向とする直視型、及び斜め前方を視野方向と
する斜視型の他に、傾斜ミラーを結像光学系の前
方に配置して側面を視野方向とする側視型があ
り、更に実開昭51−50883号、特開昭56−43538号
公報に記載の先行技術のように前記傾斜ミラーを
挿入部周方向に沿つて回転させ全周囲を観察可能
とするものが存する。前記従来の全周囲観察可能
な内視鏡は、回転可能な傾斜ミラーと対物レンズ
による定まつた画角で側方周囲を観察するもので
あるが、実際の検査、点検或は処置においてはよ
り広角に広い部分を観察し、或はより高い倍率で
観察することが必要な場合がある。 By the way, the above-mentioned endoscope includes a direct-viewing type in which the viewing direction is in the axial direction of the insertion section, and a perspective-viewing type in which the viewing direction is diagonally forward. There is a side-viewing type that uses the viewing direction as the viewing direction, and as in the prior art described in Utility Model Application Publication No. 51-50883 and Japanese Patent Application Publication No. 56-43538, the tilted mirror is rotated along the circumferential direction of the insertion part to view the entire periphery. There are things that make it possible to observe. The conventional endoscope capable of observing all the surroundings is used to observe the lateral surroundings with a fixed angle of view using a rotatable tilted mirror and an objective lens, but it is difficult to observe the lateral surroundings in actual examinations, inspections, or treatments. It may be necessary to observe a wide area at a wide angle or at higher magnification.
［考案の目的］
本考案はこれらの事情に鑑みてなされたもの
で、回転可能な傾斜ミラーを用いて内視鏡挿入部
先端の側方周囲を観察するものにおいて、その観
察範囲の画角や観察対象の倍率を、簡単な構成に
より且つ手数がかからず気軽に可変できるように
すると共に、ミラーにゴミや傷がつくと、照明光
と観察光とを一緒に同じミラーで反射させた場
合、照明光が観察光学系に反射し強烈なフレアー
を起こすが、そのようなことが起こつても、直ち
に交換でき、加えて、ミラー表面の清掃もミラー
を取り外して行なえるようにした周囲観察内視鏡
を提供することを目的としている。[Purpose of the invention] The present invention was made in view of these circumstances, and it is a device that uses a rotatable tilted mirror to observe the lateral surroundings of the tip of the endoscope insertion section, and it is possible to improve the angle of view of the observation range and In addition to making it possible to easily change the magnification of the observation target with a simple configuration and requiring no effort, the system also allows the illumination light and observation light to be reflected together by the same mirror when the mirror gets dust or scratches. The illumination light reflects on the observation optical system and causes strong flare, but even if such a flare occurs, it can be replaced immediately, and in addition, the mirror surface can be removed and cleaned. The purpose is to provide vision.
［考案の概要］
前記目的を達成するため本考案による周囲観察
内視鏡は、挿入部の先端構成内軸方向に配設され
た結像光学系の前方に、この結像光学系の光軸と
回転軸とを一致させて回転自在にミラーを配設し
挿入部先端の側方周囲を観察可能としたものにお
いて、前記ミラーを交換自在とし観察範囲の画角
或は観察対象の倍率を可変し得るよう構成されて
いる。[Summary of the invention] In order to achieve the above object, the surrounding observation endoscope according to the invention has a structure in which the optical axis of the imaging optical system is arranged in front of the imaging optical system arranged in the inner axial direction of the distal end structure of the insertion section. A mirror is disposed so as to be rotatable with the axis of rotation aligned with the axis of rotation to enable observation of the lateral periphery of the tip of the insertion tube, and the mirror is replaceable to vary the angle of view of the observation range or the magnification of the observation target. It is configured so that it can be done.
［考案の実施例］
以下図面を参照して本考案の実施例を説明す
る。[Embodiments of the invention] Examples of the invention will be described below with reference to the drawings.
第１図ないし第４図は本考案の一実施例に係
り、第１図は内視鏡全体を示す概略斜視図、第２
図ないし第４図は挿入部の先端構成部を示す断面
図で、第２図は平面傾斜ミラーを、第３図は凸面
傾斜ミラーを、第４図は凹面傾斜ミラーを用いた
例を示している。 1 to 4 relate to one embodiment of the present invention, in which FIG. 1 is a schematic perspective view showing the entire endoscope, and FIG. 2 is a schematic perspective view showing the entire endoscope.
Figures 4 through 4 are cross-sectional views showing the distal end component of the insertion section, where Figure 2 shows an example using a flat tilted mirror, Figure 3 a convex tilted mirror, and Figure 4 a concave tilted mirror. There is.
これらの図において符号１は内視鏡、２は手元
側の把持部を兼ねた操作部、３は体腔内或は管・
腔内等へ挿入される細長で例えば可撓性を有する
挿入部、４は挿入部先端の硬性を有する先端枠
で、前記操作部２ないし挿入部３の先端枠４内に
かけてフアイバーバンドルからなるイメージガイ
ド５が挿通されている。前記イメージガイド５前
方の先端枠４内には、軸方向に結像光学系６が配
列され、さらにこの結像光学系６前方の先端枠４
前面には観察窓７が配設されている。一方、操作
部２内のイメージガイド５後方には接眼レンズを
有する接眼部８を装着している。又、操作部２な
いし挿入部３の先端枠４にかけては、フアイバー
バンドルからなるライトガイド９が挿通され、そ
の出射端１０を先端枠４の前面に開口露呈してい
る。このライトガイド９は、操作部２の側面から
ケーブル１１内を挿通して外部に延設され、光源
装置１２に接続し照明光を入射するようになつて
いる。 In these figures, numeral 1 is an endoscope, 2 is an operation part that also serves as a grip on the hand side, and 3 is an endoscope inside a body cavity or a tube.
An elongated and, for example, flexible insertion section to be inserted into a cavity, etc., 4 is a rigid distal end frame at the distal end of the insertion section, and the image consists of a fiber bundle extending into the distal end frame 4 of the operating section 2 to the insertion section 3. The guide 5 is inserted. An imaging optical system 6 is arranged in the axial direction within the tip frame 4 in front of the image guide 5, and the tip frame 4 in front of the imaging optical system 6 is arranged in the axial direction.
An observation window 7 is provided at the front. On the other hand, an eyepiece section 8 having an eyepiece lens is mounted behind the image guide 5 in the operation section 2. Further, a light guide 9 made of a fiber bundle is inserted between the operating section 2 and the distal end frame 4 of the insertion section 3, and its output end 10 is exposed through the front surface of the distal end frame 4. The light guide 9 is inserted into the cable 11 from the side surface of the operating section 2 and extended to the outside, and is connected to the light source device 12 to input illumination light.
この実施例の内視鏡１は直視型であるが、その
先端枠４前方軸方向へ全周囲観察アダプタ１３が
脱着自在に取付けられ、先端枠４の側方全周囲を
観察可能になつている。前記アダプタ１３は、後
面を開口した本体１４の開口部に内周に雌ねじを
有するアダプタ取付部材１５を接続しており、こ
のアダプタ取付部材１５を先端枠４外周に形成し
た雄ねじ部１６に螺合して脱着自在に装着できる
ようになつている。尚、先端枠４は、全周囲観察
アダプタ１４を装着しないときは、例えばキヤツ
プ或はフード等を螺合し、直視型内視鏡として使
用するようになつている。前記アダプタ本体１４
はその外周に窓部１７（図示例では接続枠以外を
開口窓としているが、この窓部１７全体を透明部
材で形成してもよい。）を有し、この窓部１７位
置に傾斜ミラー１８を配設している。この傾斜ミ
ラー１８は、その回転中心と前記結像光学系６の
光軸とを一致させ且つ結像光学系６の光軸に対し
反射面を45度に設定した状態でミラー取付枠１９
に着脱自在に取付けられている。即ち、ミラー取
付枠１９は傾斜ミラー１８の背面を当接させると
共に、ミラー底面を保持する保持枠２０を有し、
この保持枠２０に例えば皿孔２１を設け、この皿
孔２１位置と一致するミラー底面にねじ孔２２を
設け、保持枠２０外方向から止めねじ２３を螺入
し傾斜ミラー１８を装着するようになつている。
又、前記アダプタ本体１４内にはモータ２４が内
設され、その回転軸２５を取付枠１９に軸着し、
取付枠１９を介して傾斜ミラー１８を回転するよ
うになつている。モータ２４のリード線は、図示
しないがアダプタ取付部材１５端面に設けられた
例えばピンに接続している一方、このピンは先端
枠４に設けたコネクタに係入可能となつており、
このコネクタに接続されたリード線は挿入部３な
いし操作部２内を挿通され、外部のモータコント
ロールユニツトに接続され、このモータコントロ
ールユニツトの操作によつてモータ２４のオン・
オフ及び正・逆転、回転速度を制御できるように
なつている。このように回転可能な傾斜ミラー１
８には常にライトガイド９の出射端１０が対峙し
ており、傾斜ミラー１８の回転につれて照明光を
側方に反射するようになつている。 The endoscope 1 of this embodiment is a direct viewing type, and a full-periphery observation adapter 13 is detachably attached to the front axis of the tip frame 4, making it possible to observe the entire lateral circumference of the tip frame 4. . The adapter 13 has an adapter mounting member 15 having a female thread on the inner periphery connected to an opening of a main body 14 whose rear surface is open, and this adapter mounting member 15 is screwed into a male threaded portion 16 formed on the outer periphery of the tip frame 4. It is designed so that it can be attached and detached freely. Incidentally, when the all-around observation adapter 14 is not attached to the distal end frame 4, a cap or a hood, for example, is screwed onto the distal end frame 4, and the distal end frame 4 is used as a direct-viewing endoscope. The adapter body 14
has a window 17 on its outer periphery (in the illustrated example, the area other than the connection frame is an open window, but the window 17 may be entirely formed of a transparent material), and a tilted mirror 18 is installed at the position of the window 17. has been set up. The tilted mirror 18 is mounted on a mirror mounting frame 19 with its rotation center aligned with the optical axis of the imaging optical system 6 and with its reflective surface set at 45 degrees with respect to the optical axis of the imaging optical system 6.
It is removably attached to the That is, the mirror mounting frame 19 has a holding frame 20 that abuts the back surface of the tilted mirror 18 and holds the bottom surface of the mirror.
For example, a countersink hole 21 is provided in this holding frame 20, a screw hole 22 is provided in the bottom surface of the mirror that coincides with the position of this countersunk hole 21, and a set screw 23 is screwed in from the outside of the holding frame 20 to mount the inclined mirror 18. It's summery.
Further, a motor 24 is installed inside the adapter body 14, and its rotating shaft 25 is fixed to the mounting frame 19.
The tilting mirror 18 is rotated via the mounting frame 19. Although not shown, the lead wire of the motor 24 is connected to, for example, a pin provided on the end face of the adapter mounting member 15, and this pin can be inserted into a connector provided on the tip frame 4.
The lead wire connected to this connector is passed through the insertion section 3 or the operation section 2, and is connected to an external motor control unit, and the motor 24 is turned on and off by operating the motor control unit.
It is possible to control off, forward/reverse rotation, and rotation speed. A tilted mirror 1 that can be rotated in this way
The output end 10 of the light guide 9 always faces the light guide 8, and as the tilted mirror 18 rotates, the illumination light is reflected laterally.
ところで、この実施例では前記したように傾斜
ミラー１８は、第２図ないし第４図に示すように
反射面が平面で結像光学系光軸に対し45度傾斜し
ている平面傾斜ミラー１８ａと、反射面が凸面で
結像光学系光軸に対し45度傾斜している凸面ミラ
ー１８ｂと、反射面が凹面で結像光学系光軸に対
し45度傾斜している凹面ミラー１８ｃとが、夫々
全周囲観察アダプタ１３に対し交換自在に用意さ
れ、必要に応じて選択使用されるようになつてい
る。 By the way, in this embodiment, as described above, the tilted mirror 18 is a plane tilted mirror 18a whose reflective surface is flat and tilted at 45 degrees with respect to the optical axis of the imaging optical system, as shown in FIGS. 2 to 4. , a convex mirror 18b whose reflecting surface is convex and inclined at 45 degrees with respect to the optical axis of the imaging optical system, and a concave mirror 18c whose reflecting surface is concave and inclined at 45 degrees with respect to the optical axis of the imaging optical system. Each of them is replaceably prepared for the all-around observation adapter 13, and can be selectively used as necessary.
このような構成では、挿入部３の先端枠４に全
周囲観察アダプタ１３を装着し、モータ２４の駆
動により傾斜ミラー１８を回転させれば、ライト
ガイド９の出射端１０から照射された照明光が傾
斜ミラー１８にて側方へ反射されて側方の被写体
へ照射され、その反射光が傾斜ミラー１８にて再
び反射されて観察窓７から結像光学系６に入射さ
れる。そして、結像光学系６にてイメージガイド
５端面に結像され、この像をイメージガイド５に
て接眼部８に伝送し接眼レンズを通して観察でき
るもので、傾斜ミラー１８の回転につれ側方を順
次照明し全周囲を観察することができるものであ
る。 In such a configuration, by attaching the all-around observation adapter 13 to the tip frame 4 of the insertion section 3 and rotating the tilting mirror 18 by driving the motor 24, the illumination light irradiated from the output end 10 of the light guide 9 can be observed. The reflected light is reflected laterally by the tilted mirror 18 and irradiated onto the subject on the side, and the reflected light is reflected again by the tilted mirror 18 and enters the imaging optical system 6 through the observation window 7. An image is formed on the end surface of the image guide 5 by the imaging optical system 6, and this image is transmitted to the eyepiece section 8 by the image guide 5 and can be observed through the eyepiece. It illuminates sequentially and allows observation of the entire surrounding area.
前記側方全周囲の観察画角、倍率は傾斜ミラー
１８ａ，ｂ，ｃの選択使用により簡単に可変する
ことが可能である。即ち、第２図に示す如く平面
傾斜ミラー１８ａを用いればその画角は2θであ
り、第３図に示す如く凸面傾斜ミラー１８ｂを用
いればその画角は2θ1に広がりより広い部分の観
察が可能となり、第４図に示す如く凹面傾斜ミラ
ー１８ｃを用いればその画角は2θ2に狭くなつて
対象物を拡大してその観察が可能となる。 The viewing angle and magnification of the entire lateral periphery can be easily varied by selectively using the tilting mirrors 18a, b, and c. That is, if a plane inclined mirror 18a is used as shown in FIG. 2, the angle of view is 2θ, and if a convex inclined mirror 18b is used as shown in FIG. 3, the angle of view is 2θ1 , allowing observation of a wider area. If a concave inclined mirror 18c is used as shown in FIG. 4, the angle of view will be narrowed to 2θ 2 , making it possible to enlarge the object and observe it.
尚、本考案において、傾斜ミラーを内設した全
周囲観察装置部分は先端枠に対し脱着式ではなく
固定的、即ち全周囲観察専用の内視鏡としても構
成される。又、傾斜ミラーの回転駆動力はモータ
によらずに、例えば操作部から延設されたワイヤ
等による手動にて回転するようにも構成される。
更に、前記傾斜ミラーの回転は例えば180度、90
度等制約されたものであつてもよい。更に又、全
周囲観察アダプタの先端枠への脱着自在な装着、
傾斜ミラーのアダプタへの交換自在な取付け手段
は、実施例に限ることなく公知の手段等種々実施
される。 In the present invention, the full-circumference observation device section with the inclined mirror installed therein is not removable from the tip frame, but is fixed, that is, it is configured as an endoscope exclusively for full-circumference observation. Further, the rotational driving force of the tilting mirror is not provided by a motor, but is also configured to be rotated manually using, for example, a wire extending from an operating section.
Furthermore, the rotation of the tilting mirror is, for example, 180 degrees, 90 degrees
It may be something with some degree of restriction. Furthermore, the all-around observation adapter can be detachably attached to the tip frame.
The means for attaching the tilting mirror to the adapter in a replaceable manner is not limited to the embodiments, and various known means may be used.
［考案の効果］
以上説明したように、観察範囲の画角や観察対
象の倍率を、簡単な構成により、且つ手数がかか
らずに気軽に可変でき、しかもミラーにゴミや傷
がつくと、照明光と観察光とを一緒に同じミラー
で反射させた場合、照明光が観察光学系に反射し
強烈なフレアーを起こすが、そのようなことが起
こつても、直ちに交換でき、加えて、ミラー表面
の清掃も取り外して行なえる効果がある。[Effects of the invention] As explained above, the angle of view of the observation range and the magnification of the observation target can be easily varied with a simple configuration and without any trouble. When illumination light and observation light are reflected together by the same mirror, the illumination light is reflected on the observation optical system and causes a strong flare, but even if this happens, it can be replaced immediately, and in addition, the mirror The surface can also be removed for cleaning.
図面は本考案の一実施例を示し、第１図は内視
鏡全体を示す概略斜視図、第２図ないし第４図は
挿入部先端構成部を示す断面図である。
３……挿入部、４……先端枠、６……結像光学
系、１８……傾斜ミラー。
The drawings show one embodiment of the present invention, with FIG. 1 being a schematic perspective view showing the entire endoscope, and FIGS. 2 to 4 being sectional views showing the distal end component of the insertion section. 3... Insertion section, 4... Tip frame, 6... Imaging optical system, 18... Inclined mirror.
Claims (1)
の結像光学系の前方に設けられ側方周囲に窓部を
設けた先端部材と、この先端部材に設けられた回
転軸体と、前記窓部から先端部材内に出し入れ可
能で前記結像光学系の前方に位置するよう回転軸
体に対して着脱自在に固定される回転ミラーとを
具備したことを特徴とする周囲観察内視鏡。 An imaging optical system disposed at the distal end of the insertion section, a distal end member provided in front of the imaging optical system and provided with a window around the sides, and a rotating shaft provided on the distal end member. , a rotating mirror that can be inserted into and removed from the tip member through the window and is detachably fixed to the rotating shaft so as to be located in front of the imaging optical system. mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15009483U JPS6059214U (en) | 1983-09-28 | 1983-09-28 | Surrounding observation endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15009483U JPS6059214U (en) | 1983-09-28 | 1983-09-28 | Surrounding observation endoscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6059214U JPS6059214U (en) | 1985-04-24 |
| JPH0224095Y2 true JPH0224095Y2 (en) | 1990-07-02 |
Family
ID=30332990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15009483U Granted JPS6059214U (en) | 1983-09-28 | 1983-09-28 | Surrounding observation endoscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6059214U (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0522902Y2 (en) * | 1985-05-27 | 1993-06-11 | ||
| JP2005211579A (en) * | 2004-02-02 | 2005-08-11 | Koden Kk | Observation apparatus |
| CA2721495C (en) * | 2008-04-14 | 2017-12-12 | Carnegie Mellon University | Articulated device with visualization system |
| JP5150388B2 (en) * | 2008-07-01 | 2013-02-20 | 富士フイルム株式会社 | Endoscope |
| WO2010055800A1 (en) * | 2008-11-11 | 2010-05-20 | オリンパスメディカルシステムズ株式会社 | Lighting optical system for endoscope |
| JP5379545B2 (en) * | 2009-04-13 | 2013-12-25 | オリンパス株式会社 | Endoscope |
| JP2010273757A (en) * | 2009-05-27 | 2010-12-09 | Zycube:Kk | Image sensor applied device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5598716A (en) * | 1979-01-20 | 1980-07-28 | Fuji Photo Optical Co Ltd | Endoscope optical system |
| JPS5643538A (en) * | 1979-09-18 | 1981-04-22 | Mitsubishi Heavy Ind Ltd | Inner surface visual inspection device of heat transfer tube of heat exchanger or the like |
| JPS5685324A (en) * | 1979-12-17 | 1981-07-11 | Olympus Optical Co | Optical adaptor for endoscope |
-
1983
- 1983-09-28 JP JP15009483U patent/JPS6059214U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5598716A (en) * | 1979-01-20 | 1980-07-28 | Fuji Photo Optical Co Ltd | Endoscope optical system |
| JPS5643538A (en) * | 1979-09-18 | 1981-04-22 | Mitsubishi Heavy Ind Ltd | Inner surface visual inspection device of heat transfer tube of heat exchanger or the like |
| JPS5685324A (en) * | 1979-12-17 | 1981-07-11 | Olympus Optical Co | Optical adaptor for endoscope |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6059214U (en) | 1985-04-24 |
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