JPH0516009B2 - - Google Patents
Info
- Publication number
- JPH0516009B2 JPH0516009B2 JP57133344A JP13334482A JPH0516009B2 JP H0516009 B2 JPH0516009 B2 JP H0516009B2 JP 57133344 A JP57133344 A JP 57133344A JP 13334482 A JP13334482 A JP 13334482A JP H0516009 B2 JPH0516009 B2 JP H0516009B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- amount
- aperture
- photographing
- switching
- 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 27
- 238000003384 imaging method Methods 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000005375 photometry Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000005286 illumination Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001444 catalytic combustion detection Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 210000001835 viscera Anatomy 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
- A61B1/04—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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Optics & Photonics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Physics & Mathematics (AREA)
- Endoscopes (AREA)
- Exposure Control For Cameras (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Description
【発明の詳細な説明】
本発明は、鮮明に撮影可能となる範囲を大きく
して撮影できるようにした内視鏡撮像装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope imaging device that is capable of photographing with a wide range of sharp images.
近年、医療分野及び工業分野において、内視鏡
が広く用いられるようになつている。特に、医療
分野においては、内視鏡の接眼部に目を近接させ
て直接体腔内の目的部位を観察するのみならず、
接眼部にカメラ、テレビカメラ等を装着して、
(写真)撮影を行い、目的部位の様子を記録して
おくことが広く行われる。このような場合、肉眼
による観察においては、術者が自らの視度を調整
することにより、所定の結像位置からずれた位置
に結像した場合においても補正して鮮明な観察光
学像を得ることができる。 In recent years, endoscopes have become widely used in the medical and industrial fields. In particular, in the medical field, it is not only necessary to bring the eye close to the eyepiece of an endoscope to directly observe the target area within the body cavity.
Attach a camera, TV camera, etc. to the eyepiece,
(Photography) It is widely practiced to take pictures and record the appearance of the target area. In such cases, when observing with the naked eye, the operator can adjust his or her own diopter to correct even if the image is formed at a position that deviates from the predetermined image formation position, thereby obtaining a clear observation optical image. be able to.
しかし、カメラあるいはテレビカメラを用いる
場合には、撮影レンズ系を所定の撮影面若しくは
結像面に鮮明な光学像を結ぶ位置、つまり合焦位
置(点)に設定しなければならないが、内視鏡撮
影は、近年撮影光学系の倍率(焦点距離f)を増
加させて拡大像を得ようとする要望が強く、且つ
近距離で撮影する場合が多いため焦点深度が浅く
なる。 However, when using a camera or television camera, the photographing lens system must be set at a position that forms a clear optical image on a predetermined photographic plane or image forming plane, that is, the focal position (point). In mirror photography, there has recently been a strong desire to increase the magnification (focal length f) of the photographic optical system to obtain an enlarged image, and since photography is often done at a short distance, the depth of focus is shallow.
従つて本出願人による特開昭56−128132号公報
及び特開昭56−128134号公報に開示されているよ
うに、内視鏡接眼部後方に装着される撮影装置の
アダプタレンズを前後動させるフオーカス手段に
て所定の結像面に鮮明に結像する状態を術者が確
認して撮影できるようにした従来例がある。 Therefore, as disclosed in Japanese Patent Application Laid-open Nos. 56-128132 and 1982-128134 by the present applicant, the adapter lens of the imaging device attached to the rear of the endoscope eyepiece can be moved back and forth. There is a conventional example in which an operator can confirm that a sharp image is formed on a predetermined imaging plane using a focusing means and then take an image.
しかしながら、これら従来例においては、上記
フオーカス手段と共に、絞りが連動して動くた
め、絞り調整を行う操作を必要としない長所を有
するものの、撮影距離によつては必要以上に焦点
深度を浅くしてしまう場合があつた。従つて補正
能力を有する術者の目で確認しても焦点深度が浅
いため、ピントのずれた、いわゆる“ピンボケ”
の撮影像となることがあつた。 However, in these conventional examples, the aperture moves in conjunction with the focus means, so although they have the advantage of not requiring an operation to adjust the aperture, depending on the shooting distance, the depth of focus may be made shallower than necessary. There were times when I had to put it away. Therefore, the depth of focus is shallow even when checked with the eyes of a surgeon who has the ability to correct, resulting in a so-called "out of focus".
The photographed image was sometimes taken.
このため、操作機能性を損うことなく、より鮮
明に撮影可能となる撮影装置が久しく望まれてい
た。 For this reason, there has long been a desire for an imaging device that can take clearer images without sacrificing operational functionality.
本発明は上述した点にかんがみてなされたもの
で、撮影時における焦点深度を深くするため、充
分に絞りを絞つた状態でストロボフラツシユ等の
大光量の撮影ランプを点灯して撮影を行うことに
より、焦点深度の深い撮影像を得ることを可能に
した内視鏡撮影装置を提供することを目的とす
る。 The present invention has been made in view of the above-mentioned problems.In order to deepen the depth of focus during photography, it is possible to take photographs by turning on a photography lamp with a large amount of light, such as a strobe flash, with the aperture sufficiently closed. It is an object of the present invention to provide an endoscopic photographing device that makes it possible to obtain photographed images with a deep depth of focus.
以下、図面を参照して、本発明を具体的に説明
する。 Hereinafter, the present invention will be specifically described with reference to the drawings.
第1図ないし第6図は本発明の一実施例に係
り、第1図は一実施例の全体の構成を示し、第2
図ないし第5図は一実施例に用いられる絞り機構
の一実施例を示し、第6図は一実施例における制
御系を示す。 1 to 6 relate to one embodiment of the present invention, in which FIG. 1 shows the overall configuration of one embodiment, and FIG.
5 to 5 show an embodiment of the aperture mechanism used in one embodiment, and FIG. 6 shows a control system in one embodiment.
これらの図において、硬性の内視鏡1は、硬性
で細長の挿入部2と、該挿入部2後端側に連設さ
れた太系の操作部3と該操作部3後端を後方側に
テーパ状に拡開となり、内部に接眼レンズ4を収
容した接眼部5とから構成されている。 In these figures, a rigid endoscope 1 includes a rigid and elongated insertion section 2, a thick operation section 3 connected to the rear end of the insertion section 2, and a rear end of the operation section 3 placed on the rear side. It is comprised of an eyepiece section 5 which expands into a tapered shape and houses an eyepiece lens 4 therein.
上記操作部3側部にはライトガイド口金6が突
設され、該ライトガイド口金6に着脱自在に装着
されるライトガイド(ケーブル)7を介して光源
装置8からの照診光又は撮影時における撮影光が
供給され、挿入部2内を挿通された図示しないラ
イトガイドにて挿入部2先端から前方の臓器9等
の被写体に向けて出射される照明光学系が形成さ
れている。 A light guide base 6 is protruded from the side of the operation unit 3, and a light guide (cable) 7 is detachably attached to the light guide base 6 to emit collimation light from a light source device 8 or during photographing. An illumination optical system is formed in which photographing light is supplied and is emitted from the distal end of the insertion section 2 toward a subject such as an organ 9 in front by a light guide (not shown) inserted through the insertion section 2.
上記出射された光によつて照明された被写体
は、挿入部2先端部内に配設された対物レンズ
(系)によつて結像され、リレーレンズ系等の像
伝達手段を介して後方の接眼レンズ4側に伝達さ
れ、接眼部5後端の射出瞳に目を近接させること
により、肉眼にて観察可能となる観察光学系が形
成されていると共に、接眼部5に着脱自在となる
撮影装置11を装着することによつて、撮影可能
となるように構成されている。 The subject illuminated by the emitted light is imaged by an objective lens (system) disposed within the distal end of the insertion section 2, and is transmitted to the rear eyepiece via an image transmission means such as a relay lens system. By transmitting the light to the lens 4 side and bringing the eye close to the exit pupil at the rear end of the eyepiece 5, an observation optical system that can be observed with the naked eye is formed and can be attached to and detached from the eyepiece 5. By attaching the photographing device 11, the camera is configured to be capable of photographing.
上記撮影装置11は、図示の例においては接眼
部5に装着されるアダプタ部12と、該アダプタ
部12後端側に装着される(撮影装置)本体部1
3とより構成されている。 In the illustrated example, the photographing device 11 includes an adapter section 12 attached to the eyepiece section 5, and a main body section 1 (photographing device) attached to the rear end side of the adapter section 12.
It consists of 3.
上記アダプタ部12の前端中央部に凹部が形成
され、この凹部側周にはテーパ状となる内視鏡接
眼部5外周部に当接して内視鏡1とアダプタ部1
2とを着脱自在で装着する係止片が取り付けられ
ている。 A recess is formed at the center of the front end of the adapter section 12, and the side periphery of the recess is tapered so as to come into contact with the outer periphery of the endoscope eyepiece section 5, so that the endoscope 1 and the adapter section 1 can be connected to each other.
A locking piece is attached to attach and detach 2.
内視鏡1に装着された際の内視鏡1の観察光学
系の光軸14上で接眼部5後方となるアダプタ部
12内には、光量制御手段によつて開口量が調節
される絞り15、撮影用レンズ16、ビームスプ
リツタ17とが順次配設されている。 In the adapter section 12 which is behind the eyepiece section 5 on the optical axis 14 of the observation optical system of the endoscope 1 when attached to the endoscope 1, the opening amount is adjusted by a light amount control means. A diaphragm 15, a photographing lens 16, and a beam splitter 17 are arranged in this order.
上記絞り15は、モータ等の駆動手段18によ
つて該駆動手段18の回転(回動)運動と共に、
第2図ないし第5図に示すように開口部の面積が
可変して透過光量が調節できる光量制御手段が形
成されるように構成されている。 The aperture 15 is rotated by a driving means 18 such as a motor, and the driving means 18 is rotated.
As shown in FIGS. 2 to 5, a light amount control means is formed that can adjust the amount of transmitted light by changing the area of the opening.
上記撮影用レンズ16は光軸14上を前後に可
動できて結像位置を可変できるように構成されて
いる。このレンズ16の後方のビームスプリツタ
17は、2枚の三角プリズムを接合する等して形
成され、大部分の光量を光軸14上後方の本体部
13側に進行させると共に、一部の光量を反射分
岐して測光用レンズ19を経て開口部を設けたマ
スク20後方の測光用光電素子21にて受光し、
測光回路22にて増幅して前記絞り15を経て入
射される光量が測定されるように構成されてい
る。 The photographing lens 16 is configured to be movable back and forth on the optical axis 14 to change the imaging position. The beam splitter 17 behind this lens 16 is formed by joining two triangular prisms, etc., and allows most of the light to proceed toward the main body 13 at the rear on the optical axis 14, while also transmitting a part of the light The light is reflected and branched, passes through a photometric lens 19, and is received by a photometric photoelectric element 21 behind a mask 20 provided with an aperture.
The photometric circuit 22 is configured to amplify the amount of light incident on the aperture 15 and measure it.
上記測光回路22にて測光した信号は、カメラ
コード23を介して光源装置8側に伝達され、こ
の光源装置8内の発光量制御回路24によつて撮
影時における発光量が適正露光量に達した時発光
を停止する等の制御できるように構成されてい
る。 The signal measured by the photometry circuit 22 is transmitted to the light source device 8 side via the camera cord 23, and the light emission amount control circuit 24 in this light source device 8 controls the amount of light emitted at the time of photography to reach the appropriate exposure amount. It is configured so that it can be controlled such as stopping light emission when
一方、上記アダプタ部12に装着される本体部
13における前記ビームスプリツタ17後方の光
軸14上に該光軸14と傾斜してミラー25が配
設され、該ミラー25の後方に所定の結像位置に
撮影用フイルム26が配設され、このフイルム2
6面に結像される光学像からの反射光の一部を直
接測光レンズ27を経た光電素子28によつて、
フイルム26面に結像される光学像の光量をダイ
レクトに測光できるように構成されている。 On the other hand, a mirror 25 is arranged on the optical axis 14 behind the beam splitter 17 in the main body 13 attached to the adapter part 12, and is inclined with respect to the optical axis 14, and a predetermined coupling is provided behind the mirror 25. A photographic film 26 is disposed at the image position, and this film 2
A part of the reflected light from the optical image formed on the six surfaces is directly transmitted through the photometric lens 27 and then by the photoelectric element 28.
It is constructed so that the amount of light of the optical image formed on the film 26 surface can be directly measured.
上記ミラー25で反射された光軸後方(図示で
は上方)には左右の反転を正常な状態にもどすペ
ンタプリズム29と、該ペンタプリズム29で反
射された光軸後方にフアインダレンズ30とが配
設され、このフアインダレンズ30後方からフイ
ルム26面に結像されるのと同等の光学像を観察
できるように構成されている。 Behind the optical axis reflected by the mirror 25 (upward in the figure) is a pentaprism 29 for restoring horizontal reversal to a normal state, and behind the optical axis reflected by the pentaprism 29 is a finder lens 30. It is configured such that an optical image equivalent to that formed on the surface of the film 26 can be observed from behind the finder lens 30.
上記ミラー25は、通常の観察状態においては
全て反射してフイルム26面側に行く光を遮ぎる
と共に、撮影時においては図示(第1図)の位置
から回動等して退避し、ビームスプリツタ17を
経た光がフイルム26面に結像されるように構成
されている。 In normal observation conditions, the mirror 25 reflects all the light and blocks the light that goes to the film 26 side, and when photographing, it rotates and retreats from the position shown in the figure (Fig. 1) to form a beam splitter. The structure is such that the light passing through the ivy 17 is imaged on the surface of the film 26.
しかして光源装置8内には、照診用の照診ラン
プ31と、撮影用ランプ32とが収容され、装着
されたライトガイドケーブル7端面に対向するミ
ラー33の挿脱によつて照診ランプ31による照
明と、撮影用ランプ32を集光レンズ34によつ
て集光した強力な撮影光とが切換えて使用できる
ように構成されている。 In the light source device 8, a collation lamp 31 for collation and a photographing lamp 32 are housed. It is configured so that the illumination provided by the photographic lamp 31 and the powerful photographic light condensed by the condensing lens 34 from the photographic lamp 32 can be switched and used.
ところで上記絞り15は、例えば次のように構
成されている。 By the way, the aperture 15 is configured as follows, for example.
即ち、絞り15は光軸14を中心とする三角形
状の開口部36,37をそれぞれ設けた2枚の絞
り板38,39を互いに逆方向(図示では絞り板
38,39をそれぞれ矢符A,Bで示すように上
下方向)にスライドさせることにより、開口部3
6,37の対向する三角形状の頂点が光軸14を
開口する中心として互いに逆方向に移動し、重な
つた部分の菱形の開口部36,37が透過光量を
調節する絞りとなるように構成されている。 That is, the diaphragm 15 has two diaphragm plates 38 and 39 provided with triangular openings 36 and 37 centered on the optical axis 14, respectively, in opposite directions (in the figure, the diaphragm plates 38 and 39 are pointed at arrows A and 39, respectively). Opening 3 by sliding it vertically (as shown in B)
The opposing triangular vertices 6 and 37 move in opposite directions with the optical axis 14 as the opening center, and the diamond-shaped openings 36 and 37 at the overlapping portions function as a diaphragm for adjusting the amount of transmitted light. has been done.
上記一方の絞り板38の上部側には若干横方向
に長い孔40が形成されて、この孔40には前記
駆動手段18の回転軸に取付けられたクランク腕
41の端部に突設されたピン42が収容され、前
記孔40の下方となる位置の絞り板38,39に
形成された縦方向に長い孔43,44に収容され
たガイドピン45によつて、絞り板38,39は
上下方向にそれぞれ可動するように規制されてい
る。 A slightly laterally elongated hole 40 is formed in the upper side of one of the aperture plates 38, and a crank arm 41, which is attached to the rotating shaft of the driving means 18, is provided in the hole 40 so as to protrude from the end of the crank arm 41. The aperture plates 38 and 39 can be moved up and down by guide pins 45 that accommodate the pins 42 and are accommodated in vertically long holes 43 and 44 formed in the aperture plates 38 and 39 at positions below the holes 40. It is regulated to move in each direction.
さらに上記絞り板38,39の下方部中央には
縦長の孔46,47が形成され、アーム48の中
央の孔を通してガイドピン49が前記孔46,4
7に収容されている。このアーム48の両端部側
にはそれぞれピン50,51が突設され、これら
ピン50,51は、絞り板38,39の前記孔4
6,47の左及び右部に設けた横溝52,53に
それぞれ収容されている。アーム48の中央部の
孔を通して回動中心となるように収容されたガイ
ドピン49は、スプリング54が巻回するように
取り付けられ、このスプリング54の一端は一方
のピン50にて係止され、他端はアダプタ部12
側壁に固定され、開口部36,37が最も開く状
態方向、つまり絞り板38,39がそれぞれ矢符
A,Bと逆となる方向に付勢してあり、この状態
から後述する駆動回路の信号により駆動手段18
が、矢符Cの方向に回動されると共に、クランク
腕41の端部に取付けられて孔40に収容された
ピン42は回動しながら矢符Dの方向に動くと共
に、縦長の孔43,44及びこれら孔43,44
に収容されたガイドピン45によつて絞り板38
は上方に動き、一方下部側の孔46,47及びア
ーム48の中央の孔を通したガイドピン49を中
心として左側のピン50が矢符Eで示すように上
方に回動すると、他方のピン51が下方に回動し
て他方の絞り板39を下方に移動させ、開口部3
6,37における重なる菱形状開口部分が小さく
なる方向に可変できるように構成されている。上
記駆動手段18が逆方向に回動すると、絞り板3
8,39は上述とは逆方向に移動して開口部3
6,37の重なる菱形状開口量部分が大きくなる
ように可変されるように構成されている。 Furthermore, vertically long holes 46 and 47 are formed at the center of the lower part of the aperture plates 38 and 39, and a guide pin 49 is inserted into the holes 46 and 47 through the center hole of the arm 48.
It is housed in 7. Pins 50 and 51 are provided protruding from both ends of the arm 48, and these pins 50 and 51 connect to the holes 4 of the aperture plates 38 and 39.
They are housed in horizontal grooves 52 and 53 provided on the left and right sides of 6 and 47, respectively. A guide pin 49 is housed through a hole in the center of the arm 48 so as to be the center of rotation, and a spring 54 is wound around the guide pin 49, and one end of the spring 54 is locked with one pin 50. The other end is the adapter part 12
The aperture plates 38 and 39 are fixed to the side wall and biased in the direction in which the openings 36 and 37 are most open, that is, in the direction opposite to the arrows A and B. From this state, the signals of the drive circuit, which will be described later, are Drive means 18
is rotated in the direction of the arrow C, and the pin 42 attached to the end of the crank arm 41 and housed in the hole 40 is rotated and moved in the direction of the arrow D, and the pin 42 is rotated in the direction of the arrow D. , 44 and these holes 43, 44
The aperture plate 38 is
moves upward, and when the left pin 50 rotates upward as shown by arrow E around the guide pin 49 passed through the holes 46, 47 on the lower side and the center hole of the arm 48, the other pin 51 rotates downward to move the other aperture plate 39 downward, and the opening 3
The overlapping diamond-shaped opening portions 6 and 37 are configured to be variable in the direction of decreasing size. When the drive means 18 rotates in the opposite direction, the aperture plate 3
8 and 39 move in the opposite direction to the above and open the opening 3.
The overlapping diamond-shaped aperture portions 6 and 37 are configured to be variable so as to become larger.
上記光量制御手段等を制御する電気回路系は第
6図に示すように構成されている。 The electric circuit system for controlling the light quantity control means and the like is constructed as shown in FIG.
即ち、メインスイツチ55をオンさせると、各
装置がオンされて動作し、コネクタ56を設けた
カメラコード23内のライン57を経て、光源装
置8に制御回路59の信号が伝達されるようにな
る。しかして照診光による照明状態における撮影
用レンズ16によつてフイルム26面に結像され
るのと同等になる光量の一部をビームスプリツタ
17で分岐し、レンズ19を経て測光用光電素子
21で受光し、その受光した光量を光電変換して
検出回路58に伝える。この検出回路58によつ
て増幅して光量検出が行われ、その検出信号は制
御回路59に伝達されて、駆動回路66を介して
駆動手段18を駆動させ、照診光による観察時も
充分絞り15を絞つた状態となるよう照診光の光
量を最大もしくは最大に近い状態となるように、
発光量制御回路(照診光及び撮影光の制御)24
で制御するように構成してある。 That is, when the main switch 55 is turned on, each device is turned on and operates, and a signal from the control circuit 59 is transmitted to the light source device 8 via a line 57 in the camera cord 23 provided with a connector 56. . A portion of the light equivalent to that which is imaged on the film surface 26 by the photographic lens 16 in the illumination state by the collimation light is split by the beam splitter 17, and passes through the lens 19 to the photometric photoelectric element. 21 receives the light, photoelectrically converts the amount of the received light, and transmits it to the detection circuit 58. This detection circuit 58 amplifies and detects the amount of light, and the detection signal is transmitted to the control circuit 59, which drives the drive means 18 via the drive circuit 66, so that the aperture is sufficiently apertured even during observation using collimation light. 15, so that the light intensity of the collation light is at maximum or close to maximum,
Light emission amount control circuit (control of collation light and photographing light) 24
It is configured to be controlled by
撮影時には、本体部13等に取り付けたレリー
ズスイツチ61をオンさせることにより、コネク
タ62を経て2入力のアンド回路63の一方の入
力端がローレベルからハイレベルに(ゲートを開
くように)なるので、制御回路59からの測光信
号がアンド回路63を経てコネクタ64で接続さ
れたカメラコード23におけるライン65を経て
光源装置8内の発光量制御回路24に伝えられ、
大光量の撮影用ランプ32が点灯される。一方、
制御回路59からは同時に駆動回路66に信号が
送られ、照診光の光量を最大、もしくは最大に近
い状態で充分絞つた状態にある絞り15の絞り量
が撮影ランプの点灯によつても変化しないよう制
御されている。この撮影用ランプ32の照明のも
とで、充分絞つた状態のフイルム26面に結像さ
せる光学像の反射光量の一部を測光用光電素子2
8(第1図参照)若しくはビームスプリツタ17
で分割された光を光電素子21によつて受光し、
撮影に適した露光量に達した時、発光量制御回路
24に(制御回路59からローレベルとなる)信
号を送つて撮影用ランプ32の発光を停止させる
ように構成されている。 When photographing, by turning on the release switch 61 attached to the main body 13, one input terminal of the two-input AND circuit 63 changes from low level to high level (to open the gate) via the connector 62. A photometric signal from the control circuit 59 is transmitted to the light emission amount control circuit 24 in the light source device 8 via an AND circuit 63 and a line 65 in the camera cord 23 connected by a connector 64.
The photographing lamp 32 with a large amount of light is turned on. on the other hand,
At the same time, a signal is sent from the control circuit 59 to the drive circuit 66, and the aperture amount of the diaphragm 15, which is in a state where the intensity of the collation light is sufficiently narrowed down at the maximum or close to the maximum, changes even when the photographing lamp is lit. controlled so that it does not occur. Under the illumination of this photography lamp 32, a portion of the amount of reflected light of the optical image formed on the surface of the film 26 in a sufficiently apertured state is transferred to the photometering photoelectric element 2.
8 (see Figure 1) or beam splitter 17
The light divided by is received by the photoelectric element 21,
When the exposure amount suitable for photographing is reached, a signal (low level from the control circuit 59) is sent to the light emission amount control circuit 24 to stop the photographing lamp 32 from emitting light.
このように構成された本発明の一実施例の動作
を以下に説明する。 The operation of one embodiment of the present invention configured in this manner will be described below.
硬性の内視鏡1に本発明の一実施例を装着し、
臓器9等目的とする被写体を観察あるいは撮影す
るに適した距離に設定し、フアインダレンズ30
後方から観察しながら、撮影用レンズ16を前後
動させて充分鮮明に観察できる位置に設定する。 An embodiment of the present invention is attached to a rigid endoscope 1,
Set the distance suitable for observing or photographing the target object such as the internal organs 9, and then turn the viewfinder lens 30
While observing from the rear, the photographing lens 16 is moved back and forth to set it at a position where it can be observed sufficiently clearly.
メインスイツチ55をオンさせることにより、
最大の照明強度若しくは最大に近い状態での照診
光による照明のもとでのフイルム26面に結像さ
れるのと同等となる光学像の光量検出が行われ、
その検出した信号によつて絞り15を充分絞つた
状態となる焦点深度の深い光学像が結像される状
態となる。 By turning on the main switch 55,
Detecting the light amount of an optical image that is equivalent to that formed on the film 26 surface under illumination with collimation light at maximum illumination intensity or near maximum illumination intensity,
The detected signal causes the diaphragm 15 to be sufficiently closed down, so that an optical image with a deep depth of focus is formed.
この状態で観察される被写体(対象物)を撮影
するために、レリーズスイツチ61をオンさせる
と、ミラー25が退避すると共に、大光量の撮影
用ランプ32が点灯し、前記絞り15を充分に絞
つた焦点深度の深い状態でフイルム26面に結像
される。このフイルム26面に結像された光学像
からの反射光を光電素子28で、又はビームスプ
リツタ17で分岐された一部の光を光電素子21
で受光することにより、光量測定が行われ、撮影
に対して適正な露光量に達すると、発光量制御回
路24が撮影用ランプ32の発光を停止させると
共に、ミラー25を元の位置、つまりフイルム2
6面に光が届かないように遮光する位置に復帰さ
せる。 When the release switch 61 is turned on in order to photograph the subject observed in this state, the mirror 25 is retracted, the photographing lamp 32 with a large amount of light is turned on, and the aperture 15 is sufficiently closed down. The image is formed on the film 26 with a deep depth of focus. The reflected light from the optical image formed on the surface of the film 26 is transmitted to the photoelectric element 28, or a part of the light split by the beam splitter 17 is transmitted to the photoelectric element 21.
When the appropriate exposure amount for photography is reached, the light emission control circuit 24 stops the photography lamp 32 from emitting light, and returns the mirror 25 to its original position, that is, when the film is exposed. 2
Return to the position where the light does not reach the 6th side.
このようにして得られる撮影写真は、充分絞つ
た焦点深度の深い状態で撮影されているため、い
わゆる“ピンボケ”の少いものとなる。又、撮影
の際、撮影用ランプ32の発光量を制御している
ので、熟練を必要とせず、且つ絞り15を選定す
る操作を必要としないで、撮影できる。 Photographs obtained in this manner have less so-called "out of focus" because they are photographed with a sufficiently apertured depth of focus. Furthermore, since the amount of light emitted from the photographing lamp 32 is controlled during photographing, photographing can be performed without requiring any skill or operation to select the aperture 15.
尚、本発明は撮影装置11としてカメラのみな
らずテレビカメラにも適用できるものであり、図
示しないが、撮影に用いるフイルム26、テレビ
カメラの場合の撮像素子(MOSイメージセンサ、
CCD等の電荷転送素子若しくは電荷結合素子、
CID等の電荷注入形素子)の感度(例えばASA
等)に応じて、光源装置8に設けた設定スイツチ
若しくはアダプタ部12若しくは本体部13に付
設したスイツチ等をマニアル操作によつて、発光
量を選択して制御できるようになつているので、
適正な露光量に達した時、検知されて発光が停止
されるようになつている。 It should be noted that the present invention can be applied not only to a camera but also to a television camera as the photographing device 11. Although not shown, the present invention can be applied to a film 26 used for photographing, an image sensor (MOS image sensor,
Charge transfer devices such as CCDs or charge coupled devices,
Sensitivity of charge injection type devices such as CID (e.g. ASA
etc.), the amount of light emitted can be selected and controlled by manual operation of a setting switch provided on the light source device 8 or a switch attached to the adapter section 12 or the main body section 13.
When the proper exposure amount is reached, it is detected and the light emission is stopped.
又、撮影用ランプ32は短時間のみ動作させる
場合には(強制冷却を用いることにより比較的長
時間使用可能となることもある。)、照診光の時よ
りもはるかに大光量の照明光を射出できるので、
撮影用ランプ32の容量に応じ、照診観察時にお
ける充分絞つた状態からさらに絞り15を絞つた
状態で撮影することもできる。この場合、照診用
ランプ31及び撮影用ランプ32によつてライト
ガイド7の端面に照射される(全)光量を検知す
る等すれば、(自動若しくは手動で)さらに絞る
量を的確に設定できることになる。 In addition, when the photography lamp 32 is operated for only a short period of time (it may be possible to use it for a relatively long period of time by using forced cooling), it uses a much larger amount of illumination light than when it is used as a collimation light. Since it is possible to inject
Depending on the capacity of the photographing lamp 32, photographing can be performed with the diaphragm 15 further closed down from the sufficiently closed state during collation observation. In this case, by detecting the (total) amount of light irradiated onto the end surface of the light guide 7 by the collimation lamp 31 and the photography lamp 32, it is possible to accurately set the amount of further narrowing down (automatically or manually). become.
又、上述の実施例においては、絞り15の絞り
量を制御する光量制御手段は、アダプタ部12側
に収容してあるが、勿論これに限定されるもので
なく、本体部13側に収容しても良い。 Further, in the above-described embodiment, the light amount control means for controlling the aperture amount of the diaphragm 15 is housed on the adapter part 12 side, but of course the light quantity control means is not limited to this, and it may be housed on the main body part 13 side. It's okay.
尚、アダプタ部12及び本体部13とは、分離
可能とされる側に限定されるものでなく、一体物
であつても良いことは明らかである。 Note that it is clear that the adapter section 12 and the main body section 13 are not limited to being separable, but may be integrated.
尚、光量制御手段として第2図ないし第5図に
その一例を示したが、この一例に限定されるもの
でなく、既に開示されている多くの機械的絞り、
若しくは液晶等を利用した透過光量を可変可能と
する手段であれば、同様に用いることができる。 Although examples of the light amount control means are shown in FIGS. 2 to 5, the invention is not limited to these examples, and many mechanical diaphragms that have already been disclosed may be used.
Alternatively, any means that makes it possible to vary the amount of transmitted light using a liquid crystal or the like may be used in the same manner.
又、撮影用レンズ16を適正な位置に移動すれ
ば、鮮明に撮影できる範囲を広くすることができ
るが、本発明においては焦点深度を深くしてある
ので、焦点深度が浅くなる近距離における撮影状
態においては照明光(による被写体からの反射)
がより大きくなるので、光量調節手段によつて、
より絞り込まれて焦点深度が深くなることにな
り、擬似的にオートフオーカス効果が得られる。
従つて、撮影レンズ16を移動させなくても実用
上支障なく、撮影できる場合もある。 Furthermore, by moving the photographic lens 16 to an appropriate position, it is possible to widen the range in which clear photographs can be taken; however, in the present invention, the depth of focus is increased, so it is possible to photograph at close distances where the depth of focus is shallow. In the state of illumination light (due to reflection from the subject)
becomes larger, so by using the light amount adjustment means,
The aperture is narrowed down further and the depth of focus becomes deeper, creating a pseudo-autofocus effect.
Therefore, there are cases in which photography can be carried out without any practical problem even if the photographing lens 16 is not moved.
尚、フイルム26面からの反射光をダイレクト
に受光する光電素子28は必ずしも必要とされる
ものでなく、ビームスプリツタ21で分岐された
光量を受光する光電素子21によつて、照診光の
場合と、撮影光の場合とを兼用して測光すること
もできる。 Note that the photoelectric element 28 that directly receives the reflected light from the surface of the film 26 is not necessarily required, and the photoelectric element 21 that receives the amount of light split by the beam splitter 21 can reduce the amount of illumination light. It is also possible to perform photometry for both the shooting light and the shooting light.
又、本発明は、硬性の内視鏡のみならず、軟性
の内視鏡に適用できることは明らかである。 Furthermore, it is clear that the present invention can be applied not only to rigid endoscopes but also to flexible endoscopes.
以上述べたように、本発明によれば、測光手段
によつて撮影の際の絞りを充分に絞つて、撮影を
行うようにしてあるので、ピントのずれの少い鮮
明な撮影を可能にする。又、適正な露光量になる
と、自動的に発光量を停止するようにしてあるの
で、熟練を必要とすることなく、鮮明な撮影像を
得ることができる。 As described above, according to the present invention, since the aperture is sufficiently narrowed down by the photometry means to take a picture, it is possible to take a clear picture with little out of focus. . Furthermore, since the amount of light emission is automatically stopped when the appropriate amount of exposure is reached, clear photographed images can be obtained without requiring any skill.
第1図ないし第6図は、本発明の内視鏡撮影装
置の一実施例に係り、第1図は一実施例の光学系
の全体を示す説明図、第2図は一実施例に用いら
れる絞りの構造を示す正面図、第3図は第2図の
側面断面図、第4図は第2図の底面断面図、第5
図は第2図の下部近傍を分解して示す斜視図、第
6図は一実施例の電気回路系の構成をブロツク図
にて示す回路図である。
1……内視鏡、5……接眼部、8……光源装
置、11……撮影装置、12……アダプタ部、1
3……本体部、15……絞り、16……撮影用レ
ンズ、17……ビームスプリツタ、18……駆動
手段、21,28……光電素子、22……駆動回
路、24……発光量制御回路、25……ミラー、
26……フイルム、31……照診用ランプ、32
……撮影用ランプ、36,37……開口部、3
8,39……絞り板、57……光量検出回路、5
9……制御回路。
1 to 6 relate to an embodiment of the endoscopic imaging device of the present invention, FIG. 1 is an explanatory diagram showing the entire optical system of the embodiment, and FIG. 2 is an explanatory diagram showing the entire optical system of the embodiment. Figure 3 is a side sectional view of Figure 2, Figure 4 is a bottom sectional view of Figure 2, and Figure 5 is a front view showing the structure of the aperture.
This figure is an exploded perspective view showing the vicinity of the lower part of FIG. 2, and FIG. 6 is a circuit diagram showing the configuration of the electric circuit system of one embodiment in a block diagram. DESCRIPTION OF SYMBOLS 1... Endoscope, 5... Eyepiece part, 8... Light source device, 11... Photographing device, 12... Adapter part, 1
3...Main body, 15...Aperture, 16...Photographing lens, 17...Beam splitter, 18...Driving means, 21, 28...Photoelectric element, 22...Driving circuit, 24...Light emission amount Control circuit, 25...mirror,
26...Film, 31...Lamp for collation, 32
...Photography lamp, 36, 37...Opening, 3
8, 39...Aperture plate, 57...Light amount detection circuit, 5
9...Control circuit.
Claims (1)
を結像し、像伝達手段を介して接眼部後方から観
察可能とされる内視鏡の接眼部に装着して所定の
結像面に被写体の光学像を結像する撮像装置にお
いて、 前記所定の結像面に結像される光量の一部を測
定する測光手段と、 内視鏡接眼部の後方に配設した透過光量を可変
できる絞りと、 前記測光手段による信号によつて、絞りの開口
量を制御する光量制御手段と、 撮影ランプを点灯した撮影時における撮影ラン
プの発光量を、前記測光手段からの信号により制
御する発光量制御手段と、 照診観察時における前記光量制御手段による光
量制御状態を撮影に切り換える切換手段と、 この切換手段からの信号により前記絞りの開口
量を撮影に切り換える前の状態か、更に絞り込ん
だ状態に保持する保持制御手段と、 を具備し、撮影時においては、前記絞りの開口量
を撮影に切り換える前の状態か、更に絞り込んだ
状態の下で、前記測光手段により光量を測定し、
その信号により撮影ランプの発光量を制御するよ
うにしたことを特徴とする内視鏡撮像装置。 2 前記発光量制御手段は、フイルタ又は撮像素
子の感度に応じてマニアル操作で切り換える切換
手段を具備することを特徴とする特許請求の範囲
第1項記載の内視鏡撮像装置。[Scope of Claims] 1. An optical image of a subject is formed by an objective optical system on the distal end side of the insertion section, and is attached to an eyepiece of an endoscope that can be observed from the rear of the eyepiece through an image transmission means. An imaging device that forms an optical image of a subject on a predetermined imaging plane, comprising: a photometer that measures a part of the amount of light that is imaged on the predetermined imaging plane; a diaphragm that can vary the amount of transmitted light disposed in the diaphragm; a light amount control means that controls the aperture amount of the diaphragm according to a signal from the photometry means; a light emission amount control means controlled by a signal from the means; a switching means for switching the light amount control state by the light amount control means during collimation observation to photographing; and a switching means for switching the aperture amount of the diaphragm to photographing according to the signal from the switching means. and a holding control means for holding the aperture in the previous state or in the further stopped-down state, and at the time of shooting, the aperture of the aperture is set in the state before switching to shooting or in the further stopped-down state. Measure the amount of light by means,
An endoscope imaging device characterized in that the amount of light emitted from a photographing lamp is controlled by the signal. 2. The endoscope imaging device according to claim 1, wherein the light emission amount control means includes a switching means that is manually operated to switch according to the sensitivity of a filter or an image sensor.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57133344A JPS5922536A (en) | 1982-07-30 | 1982-07-30 | Endoscope photographic apparatus |
DE19833327234 DE3327234A1 (en) | 1982-07-30 | 1983-07-28 | Device for photographing with an endoscope |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57133344A JPS5922536A (en) | 1982-07-30 | 1982-07-30 | Endoscope photographic apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5922536A JPS5922536A (en) | 1984-02-04 |
JPH0516009B2 true JPH0516009B2 (en) | 1993-03-03 |
Family
ID=15102520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57133344A Granted JPS5922536A (en) | 1982-07-30 | 1982-07-30 | Endoscope photographic apparatus |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS5922536A (en) |
DE (1) | DE3327234A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0190048U (en) * | 1987-12-08 | 1989-06-14 | ||
JPH01130111U (en) * | 1988-02-29 | 1989-09-05 | ||
US5184170A (en) * | 1989-10-16 | 1993-02-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Photographing light quantity controller for endoscope |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5336980A (en) * | 1976-09-16 | 1978-04-05 | Olympus Optical Co | Light source for endscope |
JPS55138439A (en) * | 1979-04-18 | 1980-10-29 | Olympus Optical Co | Camera for endoscope |
JPS56128134A (en) * | 1980-03-14 | 1981-10-07 | Olympus Optical Co | Phtographing apparatus for endoscope |
-
1982
- 1982-07-30 JP JP57133344A patent/JPS5922536A/en active Granted
-
1983
- 1983-07-28 DE DE19833327234 patent/DE3327234A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5336980A (en) * | 1976-09-16 | 1978-04-05 | Olympus Optical Co | Light source for endscope |
JPS55138439A (en) * | 1979-04-18 | 1980-10-29 | Olympus Optical Co | Camera for endoscope |
JPS56128134A (en) * | 1980-03-14 | 1981-10-07 | Olympus Optical Co | Phtographing apparatus for endoscope |
Also Published As
Publication number | Publication date |
---|---|
JPS5922536A (en) | 1984-02-04 |
DE3327234A1 (en) | 1984-02-02 |
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