JPS6151119A - Diaphragm device of optical device - Google Patents

Diaphragm device of optical device

Info

Publication number
JPS6151119A
JPS6151119A JP59173832A JP17383284A JPS6151119A JP S6151119 A JPS6151119 A JP S6151119A JP 59173832 A JP59173832 A JP 59173832A JP 17383284 A JP17383284 A JP 17383284A JP S6151119 A JPS6151119 A JP S6151119A
Authority
JP
Japan
Prior art keywords
aperture
light
diaphragm
light source
diaphragm body
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.)
Pending
Application number
JP59173832A
Other languages
Japanese (ja)
Inventor
Masahiko Sasaki
雅彦 佐々木
Fumiyuki Onoda
文幸 小野田
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP59173832A priority Critical patent/JPS6151119A/en
Priority to DE19853526993 priority patent/DE3526993A1/en
Publication of JPS6151119A publication Critical patent/JPS6151119A/en
Priority to US07/364,504 priority patent/US5016975A/en
Pending legal-status Critical Current

Links

Landscapes

  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Diaphragms For Cameras (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Endoscopes (AREA)

Abstract

PURPOSE:To perform excellent aperture operation regardless of the aperture quantity by composing a diaphragm body of plural crossing light shield plates so taht gaps where illumination light pass are formed, and providing the diaphragm body rotatably. CONSTITUTION:The diaphragm body 15 of the light source is constituted by stacking four diaphragm plates 41, which are cut along two opposite sides while the two remaining beltlike sides are raises at right angles to form light shield plate 43, where fitting grooves are formed at constant intervals. Those two light shield plates 43 are coupled together by engaging fitting grooves, and two coupled bodies are stacked to constitute the stop body 15. Therefore, the diaphragm body 15 has thickness in an optical axis direction and gaps for illumination light are formed between plate surfaces of the light shield plates 43, which is rotated by a galvanometer to select an aperture angle. Consequently, excellent aperture operation is performed regardless of the aperture quantity without any variation in spectral characteristics.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、内視鏡用等に用いる光源袋jの絞り装置に関
する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a squeezing device for a light source bag j used for endoscopes and the like.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

従来、実開昭53−108239号公報で開示される絞
り装置は、中空円筒からなる絞り体の壁    面に、
その中空円筒の中心軸を間に対称に位置して2個の開口
を設け、この2@の開口は、光線束を最も通過させると
きこの開口中心を結ぶ線が光線束の光軸と合致するよう
に配置したものである。
Conventionally, the aperture device disclosed in Japanese Utility Model Application Publication No. 53-108239 has a diaphragm that is made of a hollow cylinder.
Two apertures are provided symmetrically between the central axis of the hollow cylinder, and when the 2@ aperture allows the light beam to pass most, the line connecting the centers of the apertures coincides with the optical axis of the light beam. It is arranged like this.

そして、上記絞り体を回動させると上記各開口の重なり
合いが変わり、通過先組が変化するようになっている。
When the aperture body is rotated, the overlapping of the apertures changes, and the set of destinations is changed.

しかし、この先行技術は、絞り込めば絞り込むほど、通
過する光線束の幅が狭くなり、光学!!維束からなるラ
イトガイドの入射端面に対する入射範囲が狭くなり、ま
た、入射角も小さくなり、それだけ出射照明角度も小さ
くなってしまう不具合がある。
However, in this prior art, the more you narrow down the narrowing down, the narrower the width of the light beam passing through it becomes.Optical! ! There is a problem that the incident range with respect to the incident end face of the light guide made of fiber bundles becomes narrower, the incident angle also becomes smaller, and the output illumination angle becomes smaller accordingly.

一方、別の先行技術として、絞り羽根にV字状の切欠き
を形成した絞り装置も知られているが、この絞り装置は
、絞り込んだときと、開放したときとで、光学mta束
からなるライトガイドの入射端面に対するへ01角分布
が大きく異なる。そして、この種のライトガイドは、そ
の入射角によって伝達する照明光の分光特性が異なる。
On the other hand, as another prior art, an aperture device in which a V-shaped notch is formed in the aperture blade is known, but this aperture device consists of an optical mta bundle when the aperture is stopped down and when it is opened. The 01 angle distribution with respect to the incident end face of the light guide differs greatly. This type of light guide has different spectral characteristics of transmitted illumination light depending on its angle of incidence.

そして、前述したようにこの絞り装置は、ライトガイド
の入射端面に対する入射角分布が大きく異なる。すなわ
ち、絞り込んだときと、開放したときとで、光学繊維束
からなるライトガイドの入射端面の中心部と周辺部とで
入射角が異なるから、その絞り足に応じて照明光の分光
特性が変化し、特定の波長の光がカットされる。これは
、特に、R,G、Bの各波長が均等に必要な場合、たと
えば、SIDを用いた内視鏡では、都合が悪い。
As described above, in this diaphragm device, the incident angle distribution with respect to the incident end face of the light guide differs greatly. In other words, since the angle of incidence differs between the center and the periphery of the incident end face of the light guide made of an optical fiber bundle when it is stopped down and when it is opened, the spectral characteristics of the illumination light change depending on the aperture foot. However, certain wavelengths of light are cut out. This is especially inconvenient when R, G, and B wavelengths are equally required, for example, in an endoscope using SID.

〔発明の目的〕[Purpose of the invention]

本発明は、上記事情に着目してなされたもので、その目
的とするところは、絞り虫に拘らず、良好な分光特性が
広範囲にわたって得られる光源装置の絞り装置を提供す
ることにある。
The present invention has been made in view of the above-mentioned circumstances, and its object is to provide a diaphragm device for a light source device that can obtain good spectral characteristics over a wide range regardless of the diaphragm.

〔発明の概要〕[Summary of the invention]

本発明は、光源から出射する照明光の出射光路の光軸方
向に厚さを有するとともに各間に照明光透過用の隙間を
形成した複数の遮光板を交叉するように設け、さらに、
これを回転軸を中心に回転自在に設けて絞り体を構成し
、その絞り体の回転角度に応じて絞り聞を決める光源装
置の絞り装置である。
The present invention provides a plurality of light shielding plates intersecting each other, each having a thickness in the optical axis direction of the output optical path of the illumination light emitted from the light source and having a gap therebetween for transmitting the illumination light.
This is a diaphragm device for a light source device, which is rotatably provided around a rotation axis to constitute a diaphragm body, and determines the diaphragm distance according to the rotation angle of the diaphragm body.

(発明の実施例〕 以下、本発明の実施例を図面にもとづいて説明する。(Embodiments of the invention) Embodiments of the present invention will be described below based on the drawings.

第1図ないし第14図は、第1の実施例を示す。1 to 14 show a first embodiment.

この実施例は、内視鏡用光源装置の場合である。This example is a case of a light source device for an endoscope.

第1図中1は、その内?J!m用光源装置であり、これ
には、内視鏡2のライトガイド3の、入射@而4を有す
る入!)l端部5が接続されるようになっている。そし
て、このライトガイド3−の入射端面4には、後述する
絞り装置および集光レンズを通じて光源の照明光が入射
されるようになっている。
Is 1 in Figure 1 one of them? J! This is a light source device for the light guide 3 of the endoscope 2, which has an incidence of the light guide 3 of the endoscope 2. ) l end 5 is adapted to be connected. Illumination light from a light source is made incident on the entrance end surface 4 of the light guide 3- through a diaphragm device and a condensing lens, which will be described later.

ところで、上記内視鏡2は、その挿入部6の先端面に上
記ライトガイド3の先端を配置するとともに観察窓7に
臨んで固体va@素子8が配設されている。この固体搬
像素子8は、観察窓7を通して見える視野の画像を電気
信号に変換するCODなどからなる。そして、この固体
1!ill象素子8で得た画像信号は、内視鏡2内に設
けたサンプルホールド回路9と、D/A変換器10とを
介して図示しないビデオプロセス回路と、光源装置1内
に設置したローパスフィルタ回路11に伝達される。
Incidentally, in the endoscope 2, the distal end of the light guide 3 is disposed on the distal end surface of the insertion portion 6, and a solid VA@ element 8 is disposed facing the observation window 7. This solid-state image carrier 8 is composed of a COD or the like that converts an image of the visual field seen through the observation window 7 into an electrical signal. And this solid 1! The image signal obtained by the illumination element 8 is transmitted via a sample hold circuit 9 provided in the endoscope 2 and a D/A converter 10 to a video processing circuit (not shown) and a low-pass signal provided in the light source device 1. The signal is transmitted to the filter circuit 11.

ローパスフィルタ回路11の出力端は、比較器12の一
方の入力端に接続されている。この比較器12の他方の
入力端には、可変式のり準電圧源1り、1′ J(〕ニ ー! いる。
The output terminal of the low-pass filter circuit 11 is connected to one input terminal of the comparator 12. At the other input terminal of the comparator 12, there is a variable voltage source 1, 1'J (knee!).

゛しかして、上記固体系1象素子8から得られた映像離
散値信号をサンプルホールド回路9でサンプルホールド
し、これをD/A変換器10でD/A変換する。この、
変換後の信号をローパスフィルタ回路11で数フレーム
間積分し、その間の平均光偵信号を得る。これと設定光
量に対応して設定した基準電圧源13の基準電圧と比較
し、その差分て絞り体15を回動し、絞り角を制御する
ようになっている。この−)1の作動系により照明光の
明るさを自動的に調節して画像の明るさを適正にするの
である。そして、その画像を図示しないモニタでIM察
する。
Then, the video discrete value signal obtained from the solid-state one-parameter element 8 is sampled and held by the sample-and-hold circuit 9, and then D/A converted by the D/A converter 10. this,
The converted signal is integrated over several frames by a low-pass filter circuit 11 to obtain an average optical signal during that period. This is compared with a reference voltage of a reference voltage source 13 set corresponding to the set amount of light, and the aperture body 15 is rotated based on the difference to control the aperture angle. The operating system (-)1 automatically adjusts the brightness of the illumination light to make the brightness of the image appropriate. Then, the user views the image by IM on a monitor (not shown).

上記絞り装置の絞り体15は、光源装置の光源たる光源
ランプ20から出射する照明光の出射光路21上に設置
されている。そして、この絞り休15を透過した光は、
集光レンズ22により集光され、ライトガイド3の入射
端面4に入射するのである。
The aperture body 15 of the aperture device is installed on the output optical path 21 of the illumination light emitted from the light source lamp 20, which is the light source of the light source device. The light that passes through this aperture stop 15 is
The light is condensed by the condenser lens 22 and enters the incident end surface 4 of the light guide 3.

次に、上記絞り装置の具体的な構成を説明する。Next, a specific configuration of the aperture device will be explained.

第2図は、その絞り装置を含む調光部23を示し、取付
は台24に取り付けられている。すなわち、取付は台2
4には、集光レンズ22を取り付けるレンズ枠25と軸
受支持部材26とが取り付けられている。絞り体15に
ついては、後で詳述するが、この絞り休15には、両端
に回転軸27が取り付けられており、この各回転軸27
は、軸受支持部材26に取付けた軸受28に軸支されて
いる。
FIG. 2 shows a light control unit 23 including the aperture device, which is mounted on a stand 24. In other words, the installation is on stand 2
4, a lens frame 25 to which the condensing lens 22 is attached and a bearing support member 26 are attached. The aperture body 15 will be described in detail later, but the aperture body 15 has rotating shafts 27 attached to both ends, and each of the rotating shafts 27
is pivotally supported by a bearing 28 attached to a bearing support member 26.

なお、一方の軸受28は、その軸受支持部材26に形成
した取付は孔29に嵌め込まれて固定されているが、他
方の軸受28は、軸受支持部材26とは別の支持板31
に取付けられている。そして、この支持板31側の軸受
支持部材26には、その設置位置に達する切欠き孔32
が形成されており、上記他方の軸受28は、支持板31
に取り付けられたのちこの切欠き孔32を通じて側方か
ら差込まれ、取付けられるようになっている。軸受支持
6の駆動軸34に連結されている。上記継手33ム36
とを対向設置するとともに、アーム35の、11.  
   先端には、ビン37を突設し、また、他方のアー
ム36には、そのビン37を差込む長孔38を形6の駆
動@34と回転@27とは、ある程度その中心がずれて
いても正確な回転が可能である。また、回転軸27の先
端に取付けたアーム35は、その回転範囲が制限されて
いる。すなわち、第4図および第5図で示すように軸受
支持部材26に突設した回転制限部材としての一対のス
トッパ39間を回動するようになっている。そして、そ
のストッパ39間で規制される回動範囲を30”に設定
するのが望ましい。
Note that one of the bearings 28 is fixed by fitting the mounting formed on the bearing support member 26 into a hole 29, but the other bearing 28 is mounted on a support plate 31 that is separate from the bearing support member 26.
installed on. The bearing support member 26 on the support plate 31 side has a notch hole 32 that reaches the installation position.
is formed, and the other bearing 28 is connected to the support plate 31.
After being attached to the notch hole 32, it is inserted from the side and attached. It is connected to the drive shaft 34 of the bearing support 6. The above joint 33mm 36
and 11. of the arm 35 are installed facing each other.
A bottle 37 is protruded from the tip, and the other arm 36 has a long hole 38 into which the bottle 37 is inserted. Accurate rotation is also possible. Further, the rotation range of the arm 35 attached to the tip of the rotating shaft 27 is limited. That is, as shown in FIGS. 4 and 5, it rotates between a pair of stoppers 39 as rotation limiting members protruding from the bearing support member 26. It is desirable to set the rotation range regulated between the stoppers 39 to 30''.

一方、上記絞り体15は、第6図ないし第11図で示す
ように構成されている。すなわち、はぼ四角形状の4枚
の絞り板41を重ね合せてなり、各絞り板41は、特に
第8図ないし第10図で示すように対向する2辺に沿っ
て平行に細長く複数の切込み孔42を設け、さらに、残
った帯状の辺片を絞り板41の板面に直角に立上がらせ
てこれを遮光板43とするものである。この遮光板43
は、互いに平行であるとともに、上記絞り板41の板面
に垂直である。つまり、絞り板41の板面を前述した出
射光路21の光軸に直角に向けたとき、その出射光路2
1の光軸に方向に厚さを有し得るようになっている。ま
た、各遮光板43の板面間は、スリット状にそれぞれ空
き、照明光を通すようになっている。さらに、各遮光板
43には、遮光板43の設置間隔からなる一定の間隔で
嵌合溝44が切欠き形成されている。そして、その嵌合
溝44は、各遮光板43のものが一直線に並んで配置さ
れている。また、■合溝44の深さは、遮光板43の立
上がり高さの半分になっている。
On the other hand, the aperture body 15 is constructed as shown in FIGS. 6 to 11. That is, it is made up of four rectangular aperture plates 41 stacked one on top of the other, and each aperture plate 41 has a plurality of elongated parallel cuts along two opposing sides, as shown in FIGS. 8 to 10. A hole 42 is provided, and the remaining band-shaped side piece is made to stand up at right angles to the plate surface of the diaphragm plate 41 to serve as a light shielding plate 43. This light shielding plate 43
are parallel to each other and perpendicular to the plate surface of the aperture plate 41. In other words, when the plate surface of the diaphragm plate 41 is oriented perpendicularly to the optical axis of the output optical path 21, the output optical path 2
The thickness can be increased in the direction of the optical axis of 1. Moreover, the space between the surfaces of each light shielding plate 43 is spaced in the form of a slit, allowing illumination light to pass therethrough. Furthermore, fitting grooves 44 are cut out in each light shielding plate 43 at regular intervals corresponding to the installation interval of the light shielding plates 43 . In the fitting groove 44, the light shielding plates 43 are arranged in a straight line. Further, the depth of the matching groove 44 is half the rising height of the light shielding plate 43.

絞り板41の4隅は、45°の斜めに切除されている。The four corners of the aperture plate 41 are cut off at an angle of 45°.

絞りtfi41の中心を間にして対向する一対の隅部に
は、一対の取付けねじ挿通用孔45が穿設されている。
A pair of mounting screw insertion holes 45 are bored in a pair of corner portions of the aperture tfi 41 that face each other with the center in between.

このように全く同じく形成された各絞り板41は、まず
2枚の絞り板41がその遮光板43を直角にしてその各
嵌合溝44を噛み合わせる形で結合する。残る2枚の絞
り仮41についても、同様な形で結合する。この211
みのものをさらに重ね合せて第7図で示すようにする。
The two diaphragm plates 41, which are formed in exactly the same manner as described above, are first connected in such a manner that the two diaphragm plates 41 make their light shielding plates 43 at right angles and engage their respective fitting grooves 44. The remaining two temporary apertures 41 are also combined in the same manner. This 211
Then stack the two pieces on top of each other as shown in Figure 7.

つまり、各遮光板43は、その絞り板41の正面から見
ると、直角に交わりかつ重なり合う配置となる。そして
、取付けねじ挿通用孔45のある隅部に第12図および
第13図で示すような回転軸27を取付ける。この回転
軸27は、上記隅部を挟む口字状の枠46を取り付けて
なり、この枠46および取付けねじ挿通用孔45を貫通
する取付けねじ47で締付は固定する。第6図で示すよ
うにその回転軸27の中心は、上記遮光板43に対して
45°の角度で交叉しかつその遮光板43の立上がり方
向に対して直角である。
That is, when viewed from the front of the diaphragm plate 41, the light shielding plates 43 intersect at right angles and overlap each other. Then, a rotating shaft 27 as shown in FIGS. 12 and 13 is attached to the corner where the mounting screw insertion hole 45 is located. This rotary shaft 27 is provided with an opening-shaped frame 46 that sandwiches the corner, and is fixed by a mounting screw 47 passing through the frame 46 and the mounting screw insertion hole 45. As shown in FIG. 6, the center of the rotation axis 27 intersects the light shielding plate 43 at an angle of 45° and is perpendicular to the rising direction of the light shielding plate 43.

しかして、この絞り体15を上述したように出射光路2
1に設置し、ガルバノを−916にょって回動され、そ
の絞り角を連携する。つまり、大きく回動されるほどそ
の絞り角を大きくするのである。絞り角が零のとき、つ
まり、絞り休15が出射光路の光軸に対して直角のとき
は、遮光板43がその光軸に平行な状態にあり、したが
って、照明光を遮るのは、その遮光板43の板の厚さ分
だけである。このため、照明光を最も多く通す。
Therefore, this aperture body 15 is connected to the output optical path 2 as described above.
1, and the galvano is rotated by -916 to coordinate the aperture angle. In other words, the larger the rotation, the larger the aperture angle. When the aperture angle is zero, that is, when the aperture stop 15 is perpendicular to the optical axis of the output optical path, the light shielding plate 43 is parallel to the optical axis, and therefore, the illumination light is blocked by: It is only the thickness of the light shielding plate 43. Therefore, it allows the most illumination light to pass through.

この開放時のときの光の透過率は、70%以上が好まし
い。そして、絞り角が大きくなると、それに応じて遮光
板43が傾きその板面で次第に照明光を遮るようになる
。そして、照明光の光Mを小さくする。また、この絞り
作用は、絞り休15で全面的に行なわれる。つまり、出
射光路27の全体で均一に行なわれる。したがって、出
射光路21の全体で均一に絞られた照明光が集光レンズ
22で集光されてライトガイド3の入射端面4に入射す
るため、絞り量に拘らず、各種の入射角が得られる。こ
のため、ライトガイド3からの出射角度も大きくなり、
広い照明i皿が得られる。しかも、入射角度の違いによ
り、特定の波長がカットされることもなく、分光特性も
よい。さらに、遮光#f143を交叉させて使用するた
め、絞り角度が零のときの透過光量を大きくできる。特
に、鵡、先板43を回転軸27の中心軸に対して45°
で交叉するため、透過用孔部分が菱形となり、これが大
小に変化するため、均一な絞り動作を行なうことができ
る。また、その4VJ造的にも僅かな回動で大きな絞り
量が1qられる絞り体15の軽量化とコンパクト化が因
れる。
The light transmittance when opened is preferably 70% or more. Then, as the aperture angle increases, the light shielding plate 43 tilts accordingly, and the surface of the light shielding plate 43 gradually blocks the illumination light. Then, the light M of the illumination light is reduced. Further, this throttling action is performed entirely during the throttling rest 15. In other words, it is performed uniformly throughout the output optical path 27. Therefore, since the illumination light that is uniformly focused throughout the entire output optical path 21 is focused by the condenser lens 22 and enters the incident end surface 4 of the light guide 3, various incident angles can be obtained regardless of the amount of aperture. It will be done. For this reason, the angle of emission from the light guide 3 also increases,
A wide illumination plate is obtained. Furthermore, specific wavelengths are not cut off due to differences in incidence angles, and the spectral characteristics are good. Furthermore, since the light shields #f143 are used in a crossed manner, the amount of transmitted light when the aperture angle is zero can be increased. In particular, the front plate 43 is set at an angle of 45 degrees with respect to the central axis of the rotating shaft 27.
Since they intersect with each other, the transmission hole portion becomes diamond-shaped and changes in size, making it possible to perform a uniform aperture operation. Furthermore, the structure of the 4VJ is also due to the reduction in weight and compactness of the aperture body 15, which can achieve a large aperture amount of 1q with a slight rotation.

ところで、自進先板43の間、つまり、スリットの幅が
小さい(51、光量の均一性は高まる。また、開放時(
回転なし)の透過光mはそのスリット幅が大きい程、大
きい。絞り体15の容積は、スリット幅が小さい程、大
きくなる。
By the way, the width of the slit between the self-propelled plates 43 is small (51), which increases the uniformity of the light amount.
The transmitted light m (without rotation) increases as the slit width increases. The volume of the aperture body 15 becomes larger as the slit width becomes smaller.

なお、上記実施例で絞り板41の厚みが0.15 m 
、集光レンズ22の径が30mm、絞り角度が30@以
内として、第1の製作例では、スリットの幅2HR1絞
り休15の厚さが4.9mm、格子の数が約150で開
放時の透過率は87.1%であった。また、第2の製作
例としてスリットの幅が4 tttmで絞り体15の厚
さが9.8mm、格子の数が約38であるとき開放時の
透過率は93.6%である。
In addition, in the above embodiment, the thickness of the aperture plate 41 is 0.15 m.
Assuming that the diameter of the condenser lens 22 is 30 mm and the aperture angle is within 30@, in the first production example, the width of the slit is 2HR1, the thickness of the aperture hole 15 is 4.9 mm, the number of gratings is approximately 150, and the diaphragm angle is within 30@. The transmittance was 87.1%. Further, as a second manufacturing example, when the width of the slit is 4 tttm, the thickness of the aperture body 15 is 9.8 mm, and the number of gratings is about 38, the transmittance when opened is 93.6%.

なお、上記構成のものによれば、厚さの厚い板状のもの
に多数の孔を穿設したシンコン形のものに比べてもその
透過率、重さく支持部分を含めて5分の1程度にできる
)などにおいて勝れている。
In addition, according to the structure described above, the transmittance, including the heavy support part, is about one-fifth compared to that of a thick plate-like structure with many holes drilled in it. We are superior in things such as being able to do things like

第14図は、絞り休15の回転角、つまり、絞り角と、
減光率との関係を示すものである。はぼ直線的な関係が
得られていることがわり%る。なお、ここで減光率とは
、光源全光量から透過光mを弓1いたものを光源全光量
で割ったものである。
FIG. 14 shows the rotation angle of the aperture stop 15, that is, the aperture angle,
This shows the relationship with the light attenuation rate. It is clear that a nearly linear relationship has been obtained. Note that the light attenuation rate here is the sum of the total light amount of the light source minus the transmitted light m divided by the total light amount of the light source.

第15図は、本発明の他の実施例における絞り休15を
示すものである。この絞りi水151よ、遮光板43を
直角に交叉させることなく、ランダムな向きで交叉させ
たものである。
FIG. 15 shows a squeeze rest 15 in another embodiment of the present invention. In this aperture i-water 151, the light shielding plates 43 are not crossed at right angles but are crossed in random directions.

また、本発明は、上記実施例に限定されるものではなく
、たとえば、遮光板を絞り板力\ら切り起こすことなく
、別体の遮光板を絞り体の枠に取イ寸けるようにしても
よい。
Furthermore, the present invention is not limited to the above-mentioned embodiments, and for example, a separate light shielding plate can be attached to the frame of the aperture body without having to cut and raise the light shielding plate due to the force of the aperture body. Good too.

また、絞り角度をより小さくしたいときには、さらに、
絞り板の2枚組みを重ねるとよい。ところで、上記絞り
体の回転角は、15°ないし45°の範囲が最も望まし
い。この範囲で各部の寸法や部材の組合わせを考えると
よい。
Also, when you want to make the aperture angle smaller,
It is best to stack two sets of aperture plates. By the way, the rotation angle of the aperture body is most preferably in the range of 15° to 45°. It is best to consider the dimensions of each part and the combination of members within this range.

〔発明の効果) 以上、説明したように本発明によれば、絞り装置を設け
る照明光路の照明光の範囲で片寄りなく、いわば全面的
に均一な絞りを行なうことができる。
[Effects of the Invention] As described above, according to the present invention, uniform diaphragm can be performed over the entire area without deviation in the range of illumination light in the illumination optical path provided with the diaphragm device.

したがって、分光特性を損うことがないことはもちろん
のこと、照明範囲が変わることがな&Nなど良好な絞り
動作を行なうことができる。。さらに、回動する絞り体
の軽量化とフン!<ケト4ヒを図ることができる。
Therefore, not only the spectral characteristics are not impaired, but also the illumination range does not change, and a good aperture operation such as &N can be performed. . In addition, the weight of the rotating aperture body has been reduced and! <You can achieve Keto 4hi.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例の絞り装置の概略的な構成説
明図、第2図はその要部の斜視図、第3図は同じくその
絞り部の側断面図、第4図は同じくその継手部の断面図
、第5図は同じくその回動規制機構の正面図、第6因は
同じく絞り体の正面図、第7図は同じくその絞り体の側
面図、第8図は同じく絞り板の正面図、第9因はその絞
り板の側面図、第10図はその絞り板の拡大断面図、第
11因はその絞り板の遮蔽板の部分を拡大した断面図、
第12図は同じく回転軸部の側面図、第13図はその回
転軸1の平面図、第14図は第1の実施例の絞り体の特
性図、第15図は第2の実施例の絞り体の正面図である
。 1・・・内視鏡用光源装置、2・・・内視鏡、3・・・
ライトガイド、15・・・絞り体、16・・・ガルバノ
ンータ20・・・光源ランプ、21・・・出射光路、2
7・・・回転軸、41・・・絞り板、45・・・遮光板
。 出願人代理人 弁理士 坪井 淳 [1 第1図 第2図 第4図 第6図 第7図 18図 第12図 第13図 第14図 出願人オリンパス光学工業株式会社 仕理ス+i 丑ン/ 箇 手続補正書 昭和 (転)、4すC・口 特許庁長官  志 賀    学  殿1、事件の表示 特願昭59−173 P、 32号 2、発明の名称 光源装置の絞り装置 3、補正をする者 事件との関係 特許出願人 名TM; (037)  オリソバス光学ニに業株式会
比4、代理人 5、自発?ili正 7、補正の内容 (1)明細書91+J4頁の第19行目および第20行
目の各「観察窓7」の次にそれぞれ[、撮像光学系7a
Jを加入する。 (2)  同第5頁第4行目の「と、D/A変換器10
と」を抹消する。 (3)  同第5A第16行目およびり51717行目
これを1)/A斐換器10でD/A藏換する。」を抹消
する。 (4)  同第11頁第10行目ないしみ11行目の「
しかも、入射角度・・・・・・分光特性もよい。」を[
しかも、照明光は出射光路21の全体で均一に絞られる
ため、照明範囲各部の分光特性は絞り量に対して変化し
ない。JEl+li正する。 (5)  図面中実1図を別紙の辿り補正する。 (C)明8III$75曵脅11貫世C贅喰反し壬ル罰
Δ。
Fig. 1 is a schematic structural explanatory diagram of an aperture device according to an embodiment of the present invention, Fig. 2 is a perspective view of its main parts, Fig. 3 is a side sectional view of the aperture section, and Fig. 4 is the same. A sectional view of the joint part, FIG. 5 is a front view of the rotation regulating mechanism, the sixth factor is a front view of the aperture body, FIG. 7 is a side view of the aperture body, and FIG. 8 is a front view of the aperture body. The 9th factor is a side view of the aperture plate, the 10th factor is an enlarged sectional view of the aperture plate, and the 11th factor is an enlarged sectional view of the shielding plate of the aperture plate.
FIG. 12 is a side view of the rotating shaft, FIG. 13 is a plan view of the rotating shaft 1, FIG. 14 is a characteristic diagram of the aperture body of the first embodiment, and FIG. 15 is a diagram of the second embodiment. It is a front view of an aperture body. 1... Endoscope light source device, 2... Endoscope, 3...
Light guide, 15... Aperture body, 16... Galvano router 20... Light source lamp, 21... Output optical path, 2
7... Rotating shaft, 41... Aperture plate, 45... Light shielding plate. Applicant's agent Patent attorney Atsushi Tsuboi [1 Figure 1 Figure 2 Figure 4 Figure 6 Figure 7 Figure 18 Figure 12 Figure 13 Figure 14 Applicant Olympus Optical Industry Co., Ltd. Articles of Amendment Showa (Translated), 4th C., Director General of the Patent Office Manabu Shiga 1, Indication of Case Patent Application 1987-173 P, No. 32 2, Title of Invention Aperture Device for Light Source Device 3, Amendment (037) Orisobas Optical Nippon Co., Ltd. Stock Ratio: 4, Agent: 5, Voluntary? ili correct 7, details of correction (1) Next to each "observation window 7" on the 19th line and the 20th line on page 91+J4 of the specification, respectively [, imaging optical system 7a
Join J. (2) "And, D/A converter 10" on page 5, line 4.
Delete "and". (3) The 16th line of the same No. 5A and the 51717th line are converted into D/A by the 1)/A converter 10. ” to be deleted. (4) On page 11, line 10, the stain line 11 says “
Moreover, the incident angle...the spectral characteristics are also good. "of[
Moreover, since the illumination light is uniformly focused throughout the output optical path 21, the spectral characteristics of each part of the illumination range do not change with respect to the amount of aperture. JEl+li correct. (5) Correct the 1st solid drawing on a separate sheet. (C) Mei 8III $75 threat 11 years C extravagant punishment Δ.

Claims (1)

【特許請求の範囲】 1 光源から出射する照明光の出射光路上にその照明光
の光量を調節する絞り体を設置する光源装置の絞り装置
において、上記絞り体は、光源から出射する照明光の出
射光路の光軸方向に厚さを有するとともに各間に照明光
透過用の隙間を形成した複数の遮光板を交叉するように
設けてなり、回転軸を中心に回転自在に設けたことを特
徴とする光源装置の絞り装置。 2 上記複数の遮光板は、上記回転軸に対して板面に対
して垂直でない角度を有することを特徴とする特許請求
の範囲第1項に記載の光源装置の絞り装置。
[Scope of Claims] 1. In a diaphragm device of a light source device in which a diaphragm body is installed on an output optical path of illumination light emitted from a light source to adjust the amount of illumination light, the diaphragm body adjusts the amount of illumination light emitted from the light source. A plurality of light shielding plates each having a thickness in the direction of the optical axis of the output optical path and having gaps for transmitting illumination light between them are arranged so as to intersect with each other, and are rotatable about a rotation axis. Features aperture device of light source device. 2. The aperture device for a light source device according to claim 1, wherein the plurality of light shielding plates have an angle with respect to the rotation axis that is not perpendicular to the plate surface.
JP59173832A 1984-07-31 1984-08-21 Diaphragm device of optical device Pending JPS6151119A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP59173832A JPS6151119A (en) 1984-08-21 1984-08-21 Diaphragm device of optical device
DE19853526993 DE3526993A1 (en) 1984-07-31 1985-07-27 Diaphragm arrangement of a light source for an endoscope
US07/364,504 US5016975A (en) 1984-07-31 1989-06-08 Electronic endoscope provided with a sample-hold circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59173832A JPS6151119A (en) 1984-08-21 1984-08-21 Diaphragm device of optical device

Publications (1)

Publication Number Publication Date
JPS6151119A true JPS6151119A (en) 1986-03-13

Family

ID=15967980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59173832A Pending JPS6151119A (en) 1984-07-31 1984-08-21 Diaphragm device of optical device

Country Status (1)

Country Link
JP (1) JPS6151119A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6464633B1 (en) 1999-08-23 2002-10-15 Olympus Optical Co., Ltd. Light source device for endoscope using DMD
JP2013068757A (en) * 2011-09-22 2013-04-18 Japan Display East Co Ltd Display device
US11877628B2 (en) 2019-12-12 2024-01-23 Ykk Corporation Watertight fastener and method for manufacturing same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6464633B1 (en) 1999-08-23 2002-10-15 Olympus Optical Co., Ltd. Light source device for endoscope using DMD
JP2013068757A (en) * 2011-09-22 2013-04-18 Japan Display East Co Ltd Display device
US11877628B2 (en) 2019-12-12 2024-01-23 Ykk Corporation Watertight fastener and method for manufacturing same

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