JPS61100714A - Stereoscopic microscope - Google Patents

Abstract

PURPOSE:To observe a subject without fatiguing an observer by constituting a stereoscopic microscope so that the observer can obtain proper elevation and convergence angles and a proper interpupillary distance. CONSTITUTION:When dip prisms 3R, 3L each of which has a reflecting surface 3b inclinded by phi=14.9 deg. are inclinded by theta-24.6 deg., the most observable stereoscopic microscope can be obtained. So-called poloprisms are used for erected prisms 4R, 4L and arranged so as to be rotated around optical axes R2, L2 to adjust the dip. Even if the erected prisms 4R, 4L are rotated around the optical axes R2, L2, the observing optical axes R3, L3 are always in parallel with the optical axes R2, L2 because of the property of the poloprisms, so that the angles of the observing optical axes R3, L3 are kept at a constant value even at the adjustment of the dip and the elevation angle and the convergence angle are not changed. On the basis of the structure of the poloprisms, a distance up to an eye S to be tested can be shortened.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、例えば眼科診察用に使用され、ガリレオ型双
眼実体顕微鏡部を有する実体顕微鏡に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a stereomicroscope that is used, for example, for ophthalmological examination and has a Galileo-type binocular stereomicroscope section.

［従来の技術］ 従来から、一般にこの種の双眼実体顕微鏡部の光学系に
は、ガリレオ型とグリノー型が広く用いられている。こ
の内のグリノー型は全く別個の左右２つの顕微鏡光学系
が所定の角度、例えば１゜〜１２度で交叉するように配
置されているので、眼の輻輳の問題が生ずることはない
、しかしこのグリノー型光学系は、対物レンズが２つに
分割されているので、倍率変換のためには対物レンズを
交換する必要があり複雑で取扱いが面倒である。[Prior Art] Conventionally, Galileo type and Greenough type optical systems have been widely used for the optical systems of this type of binocular stereomicroscope. Among these, the Greenough type has two completely separate left and right microscope optical systems arranged so that they intersect at a predetermined angle, for example, 1° to 12°, so there is no problem with eye convergence. Since the Greenough type optical system has an objective lens divided into two parts, it is necessary to exchange the objective lens for magnification conversion, which is complicated and troublesome to handle.

また、光束が平行光になる部分が存在しないために、鏡
筒の途中から測視鏡或いはカメラ等のための光路を分割
することも困難である。Further, since there is no part where the light beam becomes parallel light, it is difficult to divide the optical path for the telescope, camera, etc. from the middle of the lens barrel.

一方、ガリレオ型は接限レンズを介して観察者の両眼に
入る光束が平行光であるために、実際には近くにあると
知覚された物体を、あたかも無限遠にあるかのように輻
輳を行わなければならず、立体視することが困難となる
欠点を有している。On the other hand, in the Galilean type, the light flux that enters the observer's eyes through the tangent lens is parallel light, so objects that are perceived to be nearby are converged as if they were at infinity. This has the disadvantage that stereoscopic viewing is difficult.

しかし、このガリレオ型光学系では、対物レンズにより
被検体の一点から出射した光束を平行光束にできるので
、ズーム光学系も含めた倍率変換が簡単となって、また
平行光束部にビームスプリッタを挿入することにより、
種々の付加機構を装着できるという長所を有している。However, with this Galilean optical system, the objective lens can convert the light beam emitted from a single point on the object into a parallel light beam, making it easy to convert the magnification including the zoom optical system, and inserting a beam splitter in the parallel light beam section. By doing so,
It has the advantage that various additional mechanisms can be attached.

従って、従来からガリレオ塑を改良して、平行光束部に
適当なプリズム等を挿入して左右の接眼レンズの光軸を
交叉させ、輻睦角を有するようにした装置が工夫されて
いる。例えば、実公昭５８−１９５３０号公報及び特開
昭５４−３１９９２号公報等に提案されているように、
接眼レンズの外側にくさびプリズムを配置したものが知
られているが、この方式のものはアイポイントつまり瞳
位置が近くなり過ぎて見難いし、適当な正立光学系を配
していないので、輻鯖角を変えることなしに、眼幅調節
を行うことができない、また、人間の自然な視線は近く
を見るとき、輻較がつくと同時に若干下を向いているの
で、観察光軸に俯角を与えることにより疲労を少なくし
て観察を容易にすることが望まれるが、これらの装置に
おいては俯角については全く考慮されていないのが現状
である　。Therefore, a device has been devised in which the Galileo plastic is improved and a suitable prism or the like is inserted into the parallel light beam section so that the optical axes of the left and right eyepieces intersect, thereby creating a convergence angle. For example, as proposed in Japanese Utility Model Publication No. 58-19530 and Japanese Patent Application Laid-open No. 54-31992,
It is known that a wedge prism is placed outside the eyepiece, but with this type the eye point or pupil position is too close, making it difficult to see, and it does not have a suitable erecting optical system. It is not possible to adjust the interpupillary distance without changing the convergence angle.Also, when looking at a close-up, the human's natural line of sight is slightly downward as soon as the convergence is established, so the angle of depression is adjusted to the observation optical axis. Although it is desired to reduce fatigue and make observation easier by providing the angle of depression, the current situation is that these devices do not take the angle of depression into consideration at all.

［発明の目的］ 本発明の目的は、ガリレオ型顕微鏡光学系の長所を活用
すると共にその短所を改善し、観察者が適当な俯角・輻
輳角及び眼幅距離を得ることができる実体顕微鏡を提供
することにある。[Object of the Invention] An object of the present invention is to provide a stereoscopic microscope that utilizes the advantages of the Galilean microscope optical system and improves its disadvantages, allowing the observer to obtain an appropriate depression angle, convergence angle, and interpupillary distance. It's about doing.

［発明の概要］ 上述の目的を達成するための本発明の要旨は、左右眼光
軸が対物レンズの後方で平行になる実体顕微鏡において
、対物レンズと、該対物レンズの後方に配置し光軸の廻
りに回転可能な１対の眼幅調節用正立光学系と、前記対
物レンズと前記眼幅調節用正立光学系との間に配置し反
射面を共有した偶数個の反射面を有する一対の俯角ｅ輻
鯖角調節手段とを具備し、該俯角参輻較角調節手段によ
り傾斜された光軸を中心に前記眼幅調節用正立光学系を
それぞれ回転して、眼幅を調節するようにしたことを特
徴とする実体顕微鏡である。[Summary of the Invention] The gist of the present invention for achieving the above-mentioned object is to provide a stereomicroscope in which the optical axes of the left and right eyes are parallel behind the objective lens, and an objective lens, and a a pair of erecting optical systems for adjusting interpupillary distance that are rotatable around the periphery; and a pair having an even number of reflective surfaces arranged between the objective lens and the erecting optical system for adjusting interpupillary distance and sharing a reflective surface. and a depression angle and convergence angle adjustment means, and each of the erecting optical systems for adjusting interpupillary distance is rotated around the optical axis tilted by the depression angle reference and convergence angle adjustment means to adjust interpupillary distance. This stereo microscope is characterized by the following features.

［発明の実施例］ 本発明を図示の実施例に基づいて詳細に説明する。[Embodiments of the invention] The present invention will be explained in detail based on illustrated embodiments.

第１図は本発明を眼科用実体゛顕微鏡に適用した実施例
を示し、双眼実体顕微鏡部のみを示す平面図であり、Ｓ
は被検眼、Ｒ１−Ｒ２・Ｒ３及びＬｌ・Ｌ２・Ｌ３はそ
れぞれ観察者の右眼ＥＲと左眼ＥＬに対応する光軸を表
している。これらの光軸Ｒ１・Ｒ２・Ｒ３及びＬｌ・Ｌ
２・Ｌ３には、共通の対物レンズ１の背後にそれぞれリ
レーレンズ２Ｒ−２Ｌ、光路を偏向するための俯視プリ
ズム３Ｒ・３Ｌ、正立プリズム４Ｒ＠４Ｌ、接眼レンズ
５Ｒ・５Ｌか順次に配列されている。また、対物レンズ
ｌの前方には、照明光学系のプリズムから成る光分割部
材６が配置され、この照明光学系は順次に配列された照
明用光源７、照明レンズ８及び前述の光分割部材６から
構成されている。FIG. 1 shows an embodiment in which the present invention is applied to an ophthalmic stereoscopic microscope, and is a plan view showing only the binocular stereoscopic microscope section.
represents the eye to be examined, and R1-R2, R3, and L1, L2, and L3 represent optical axes corresponding to the observer's right eye ER and left eye EL, respectively. These optical axes R1, R2, R3 and Ll, L
2 and L3, relay lenses 2R to 2L, downward viewing prisms 3R and 3L for deflecting the optical path, erecting prisms 4R@4L, and eyepieces 5R and 5L are sequentially arranged behind the common objective lens 1. ing. In addition, in front of the objective lens l, a light splitting member 6 consisting of a prism of an illumination optical system is arranged, and this illumination optical system includes an illumination light source 7, an illumination lens 8, and the light splitting member 6 arranged in sequence. It consists of

照明用光源７を出射した光束は、照明レンズ８により光
分割部材６を介して被検眼Ｓの結像位置Ｅｐに結像され
る。結像位置ｔｐは対物レンズ１の物体側焦点位置に一
致するようにされ、結像位置ＥＰからの光束は対物レン
ズ１により平行光束となり、リレーレンズ２Ｒ−２Ｌを
介して俯視プリズム３Ｒ・３Ｌに入射する。The light beam emitted from the illumination light source 7 is imaged by the illumination lens 8 via the light splitting member 6 at the imaging position Ep of the eye S to be examined. The imaging position tp is made to coincide with the object-side focal position of the objective lens 1, and the light beam from the imaging position EP becomes a parallel light beam by the objective lens 1, and is transmitted to the overhead viewing prisms 3R and 3L via relay lenses 2R-2L. incident.

俯視プリズム３Ｒ−３Ｌはそれぞれ互いに平行でない２
つの反射面を有するプリズムであり、第２図は俯視プリ
ズム３Ｒ−３Ｌを光軸Ｒ１φＬ１方向から見た場合を示
している。俯視プリズム３Ｒ・３・Ｌは垂直方向に対し
てそれぞれ角度θだけ傾けて設置されているので、俯視
プリズム３Ｒ−３Ｌに入射した光束は、第１反射面３ａ
で破線で示すように、垂直から角度θだけ傾いた方向に
反射されて第２反射面３ｂに入射する。第２反射面３ｂ
では光軸Ｒ１＠Ｌｌから見た場合には同一方向に出射す
るが、第３図の側面図に示すように側面から見た場合に
は、第１反射面３ａと第２反射面３ｂが平行ではないの
で角度φだけ傾いて出射し、光軸Ｒ２・Ｌ２は光軸Ｒ１
−Ｌｌに対してΦだけ傾くことになる。The overhead viewing prisms 3R-3L are not parallel to each other2.
FIG. 2 shows the overhead viewing prism 3R-3L viewed from the optical axis R1φL1 direction. Since the downward viewing prisms 3R, 3, and L are installed at an angle θ with respect to the vertical direction, the light flux incident on the downward viewing prisms 3R-3L is directed to the first reflecting surface 3a.
As shown by the broken line, the light is reflected in a direction inclined by an angle θ from the vertical and enters the second reflecting surface 3b. Second reflective surface 3b
When viewed from the optical axis R1@Ll, the light is emitted in the same direction, but when viewed from the side as shown in the side view of Fig. 3, the first reflective surface 3a and the second reflective surface 3b are parallel. Therefore, the light is emitted tilted by the angle φ, and the optical axes R2 and L2 are aligned with the optical axis R1.
-Ll is inclined by Φ.

ここで、角度θとφの適当な値について考察する。一般
的に人間の自然な視線の方向の俯角はほぼ１５度であり
、輻輳角は２５０　ｍｍ前方を見るとすると左右眼とも
それぞれほぼ７度である。いフ　　　ま、俯角をΦ、輻
饋角をｅとして、Φ、ｅ、φ。Here, appropriate values of angles θ and φ will be considered. In general, the angle of depression in the direction of a human's natural line of sight is approximately 15 degrees, and the convergence angle is approximately 7 degrees for both the left and right eyes when looking 250 mm ahead. If the angle of depression is Φ and the angle of convergence is e, then Φ, e, φ.

θの関係をｘＹＺの直交座標系により表示すると第４図
のようになる。Ｘ軸上に配置された左右の観察眼ＥＲ・
ＥＬの中心を原点Ｏ１観察眼ＥＲ−ＥＬがＹ軸方向を見
るものとし、輻轄角をｅ、俯角を０度としたときの対象
物の位置側子軸上のＳｌ、輻妓角をｅ、俯角をΦとした
ときの対象物の位置をＹＺ平面上の５２とし、このＳ２
をＺ軸上に投影し角ＥＬＦＥＲ＝２０となる点をＰとし
、距離Ｓ１０　＝　ａ　、　０ＥＬ＝　ｂ　、　５ＩＥ
Ｌ＝　ｃ、ＯＰ　＝　５ＩＳ２＝　ｄとすると、ｔａｎ
＠　＝　ｂ　／　ａ　　　　　　　　　　　−（１）ｔ
ａｎΦ＝　ｄ　／　ａ　　　　　　　　　　　−（２）
ｃｏｓ＠　＝　ａ　／　ｃ　　　　　　　　　　　−（
３）ｔａｎθ＝　ｂ　／　ｄ　　　　　　　　　　　、
（４）ｔａｎφ＝ｄ／ｃ−（５） となる。When the relationship between θ is expressed using an xYZ orthogonal coordinate system, it becomes as shown in FIG. Left and right observation eyes ER placed on the X-axis
Assuming that the center of EL is the origin O1, the observation eye ER-EL looks in the Y-axis direction, the angle of convergence is e, the angle of depression is 0 degrees, the position of the object is Sl on the side axis, and the convergence angle is e. , the position of the object when the depression angle is Φ is 52 on the YZ plane, and this S2
is projected on the Z axis and the point where the angle ELFER = 20 is defined as P, and the distance S10 = a, 0EL = b, 5IE
If L=c, OP=5IS2=d, tan
@ = b / a - (1) t
anΦ=d/a−(2)
cos @ = a / c −(
3) tanθ=b/d,
(4) tanφ=d/c-(5).

従って、（１）　、　（２）　、　（４）式よりｔａｎ
θ＝　ｂ／ｄ＝　（ｂ／ａ）／　（ｄ／ａ）＝　　ｔａ
ｎ＠ｌ／　ｔａｎΦ　　　　　・・・（８）また、（２
）　、　（３）　、　（５）式よりｔａｎφ＝　ｄ／ｃ
＝　（ａ／ｃ）　　φ　（ｄ／ａ）＝　　ｃｏｓ（ｉ＞
　１１ｔａｎΦ　　　　　…（７）ここで、（６）式、
（７）式の輻輳角ｅと俯角Φにそれぞれ前述の７度と１
５度を代入すれば、θ、φの角度を求めることができ、
θ＝２４．６度、φ＝１４．９度となる。Therefore, from equations (1), (2), and (4), tan
θ= b/d= (b/a)/ (d/a)= ta
n@l/ tanΦ ... (8) Also, (2
), (3), and (5), tanφ= d/c
= (a/c) φ (d/a)= cos(i>
11tanΦ...(7) Here, equation (6),
The convergence angle e and depression angle Φ in equation (7) are the aforementioned 7 degrees and 1, respectively.
By substituting 5 degrees, you can find the angles of θ and φ,
θ=24.6 degrees and φ=14.9 degrees.

従って、φ＝１４．９度になるような傾きの反射面３ｂ
を有する俯視プリズム３Ｒ・３Ｌを、θ＝２４．６度に
なるように斜設すれば、最も観察し易い実体顕微鏡を得
ることができる。Therefore, the reflective surface 3b has an inclination such that φ=14.9 degrees.
If the overhead viewing prisms 3R and 3L having the following angles are installed obliquely so that θ=24.6 degrees, it is possible to obtain a stereoscopic microscope that is easiest to observe.

なお、俯視プリズム３Ｒ−３Ｌは同様の反射面を有する
ミラーと交換してもよい、また１反射面は２面でなくと
も偶数面とすると偶数回反射をしても像回転が生じない
ので、最終的に俯角・輻轢角を適当な値にできるプリズ
ム或いはミラーであれば、偶数個の反射面を有する種々
のプリズム或いはミラーを使用することができる。Note that the overhead viewing prisms 3R-3L may be replaced with mirrors having similar reflective surfaces, and if one reflective surface is an even number of surfaces, even if it is reflected an even number of times, image rotation will not occur. Various prisms or mirrors having an even number of reflective surfaces can be used as long as the prisms or mirrors can finally set the angle of depression and convergence to appropriate values.

そして、俯視プリズム３Ｒ，３Ｌを出射した光束は、正
立プリズム４Ｒ−４Ｌに入射する。一般に、正立プリズ
ム４Ｒ・４Ｌは直角プリズムを２個組み合わせて構成さ
れ、倒立像を正立像に変換する作用を有している。この
実施例では、正立プリズム４Ｒ−４Ｌに所謂ポロプリズ
ムを使用し。The light beams emitted from the downward viewing prisms 3R and 3L enter the erecting prisms 4R-4L. Generally, the erecting prisms 4R and 4L are constructed by combining two right-angled prisms, and have the function of converting an inverted image into an erected image. In this embodiment, a so-called Porro prism is used as the erecting prisms 4R-4L.

眼幅を調節するために光軸Ｒ２・Ｌ２の廻りに回転可能
に設置されている。ポロプリズムの性質から正立プリズ
ム４Ｒ−４Ｌを”光軸Ｒ２・Ｌ２の廻りに回転しても、
常に観察光軸Ｒ３・Ｌ３は光軸Ｒ２φＬ２に平行である
から、眼幅調節時にも観察光軸Ｒ３−Ｌ３の角度は不変
に保持され、°俯角・輻較角は変化することはない、ま
たポロプリズムの構造から、被検眼Ｓまでの距離を短縮
することができる。なお、ここではポロプリズムを使用
したが、菱形プリズム等の所謂眼幅調節プリズムを使用
することも可能である。It is rotatably installed around the optical axes R2 and L2 in order to adjust the interpupillary distance. Due to the nature of Porro prisms, even if the erecting prisms 4R-4L are rotated around the optical axes R2 and L2,
Since the observation optical axes R3 and L3 are always parallel to the optical axis R2φL2, the angle of the observation optical axis R3-L3 is maintained unchanged even when the interpupillary distance is adjusted, and the angle of depression and convergence do not change. Due to the structure of the Porro prism, the distance to the eye S to be examined can be shortened. Although a Porro prism is used here, it is also possible to use a so-called interpupillary distance adjusting prism such as a rhombic prism.

正立プリズム４Ｒ・４Ｌを出射した光束は、接眼レンズ
５Ｒ・５Ｌを介してそれぞれ観察老眼ＥＲφＥＬに入射
し、これにより観察者は被検眼Ｓを立体視観察をするこ
とができる。The light beams emitted from the erecting prisms 4R and 4L enter the observation presbyopia ERφEL via the eyepiece lenses 5R and 5L, respectively, so that the observer can observe the subject's eye S stereoscopically.

なお、実施例には図示していないが、対物レンズｌから
俯視プリズム３Ｒ−３Ｌまでの光軸Ｒ１・Ｌｌは平行で
あるから、光軸Ｒ１−Ｌｌトに変倍光学系や撮影装置或
いは側視鏡等へ光を分割するためのビームスプリッタ等
を挿入し、ガリレオ型の長所を生かすことができる。ま
た１本実施例では照明光学系にスリットを挿入してはい
ないが、スリット照明光学系を用いてもよい、更に、実
施例では眼科用実体顕微鏡について述べてきたが、この
実体顕微鏡は眼科用のみでなく、各方面の医療用。Although not shown in the embodiment, since the optical axes R1 and Ll from the objective lens l to the overlooking prisms 3R-3L are parallel, there is no possibility that there is a variable magnification optical system, a photographing device, or a side lens on the optical axis R1-Ll. By inserting a beam splitter or the like to split the light into an endoscope, the advantages of the Galileo type can be utilized. In addition, although a slit is not inserted into the illumination optical system in this embodiment, a slit illumination optical system may be used.Furthermore, in the embodiment, an ophthalmological stereomicroscope has been described, but this stereomicroscope is for ophthalmology. Not only for medical purposes, but also for various medical purposes.

研究用、工業用等に広く適用できることは云うまでもな
い。Needless to say, it can be widely applied to research, industrial, etc. purposes.

［発明の効果］ 以上説明したように本発明に係る実体顕微鏡は、対物レ
ンズによって左右の光路が平行とし。[Effects of the Invention] As explained above, in the stereomicroscope according to the present invention, the left and right optical paths are made parallel by the objective lens.

倍率変換や光路分割を簡単に行えるという長所を保持す
ると共に、対物レンズと接眼レンズとの間に反射面を共
有した偶数個の反射面を有する俯角拳輻轢角調節手段を
挿入して、左右の接眼レンズの光軸を適当な位置で交叉
させ、適度な俯角・輻轢角を持たせることを可能とし、
更に正立光学系の回転によって、俯角ｅ幅鯖角を変化さ
せずに適当な眼幅距離を確保し、ｆｉ察者が疲労するこ
となく観察を容易に行うことができる利点がある。In addition to maintaining the advantages of easily performing magnification conversion and optical path division, a depression angle/convergence angle adjusting means having an even number of reflective surfaces sharing a common reflective surface is inserted between the objective lens and the eyepiece. The optical axes of the eyepiece lenses intersect at appropriate positions, making it possible to have appropriate depression and convergence angles.
Furthermore, by rotating the erecting optical system, an appropriate interpupillary distance can be secured without changing the depression angle, e-width, and maze angle, and there is an advantage that the FI observer can easily perform observation without getting fatigued.

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

図面は本発明に係る実体Ｓ微鏡の一実施例を示すもので
あり、第１図は全体の光学的配置の平面図、第２図は俯
視プリズムを光軸方向から見た場合の正面図、第３図は
俯視プリズムの側面図、第４図は俯角・輻較角とθ、Φ
との関係の説明図である。 符号１は対物レンズ、２はリレーレンズ、３は俯視プリ
ズム、４は正立プリズム、５は接眼レンズ、６は分割部
材、７は光源、８は照明レンズであり、添字Ｒは右眼側
、Ｌは左眼側を表してしする。 特許出願人　　キャノン株式会社 第１図 第２図　　　　　　　第３図 第４図 手糸完：？ＴｌｊＪＥ書　（自発） １．事件の表示 昭和５９年特許願第２２２８０１号 ２、発明の名称 実体顕微鏡 ３、？Ｉｌｉ正をする者。 事件との関係　特許出願人 住所　東京都大田区下丸子三丁目３０番２号名称（１０
０）キャノン株式会社 代表者　賀来龍三部 ４、代理人 〒１２１東京都足立区梅島二丁目１７番３号梅島ハイタ
ウンＣ−１０４ ６、補正の内容 （１）明細書第１頁の特許請求の範囲を次の文章に補正
する。 「１．左右眼光軸が対物レンズの後方で平行にｔ（、−
ラお　　　る実体顕微鏡において、対物レンズと、該対
物レンズの後方に配置し光軸の廻りに回転可能な１対の
　　ス豐、と。 前記対物レンズと前記１　・　Ｉ　　−バとの間に配置
し反射面を共有した偶数個の反射面を有する一対の俯角
・輻轢角調節手段とを具備し、該俯角・輻輳角調簡手段
により傾斜された光軸を中心に前記　幅雷　　光学系を
それぞれ回転して、眼幅を調節するようにしたことを特
徴とする実体顕微鏡。 ２、前記俯角・輻輳角調節手段を反射面を共有した偶数
個の反射面を有するプリズムとした特許請求の範囲第１
項に記載の実体顕微鏡。 ３、前記俯角・幅部角調節手段を反射面を共有した偶数
個のミラーにより構成した特許請求の範囲第１項に記載
の実体顕微鏡。 Ｌ　前記対物レンズの前方に光分割部材を配置し、照明
光学系を接続した特許請求の範囲第１項に記載の実体顕
微鏡、」 （２）同第５頁第４行〜第５行目の「平行になる実体顕
微鏡」を「平行になり、正文光学系を有する実体顕微鏡
」と補正する６ （３）同第５頁第７行目、第８行目、第１１行〜第１２
行目の「調節用正立光学系」　（３個所）を「調節用光
学系」と補正する。 （４）同第６頁第１３行〜第１４行目の「物体側焦点位
置」を「物体側焦点位置」と補正する。The drawings show an embodiment of the solid S microscope according to the present invention, and FIG. 1 is a plan view of the entire optical arrangement, and FIG. 2 is a front view of the overhead prism viewed from the optical axis direction. , Figure 3 is a side view of the overlooking prism, Figure 4 is the angle of depression, angle of convergence, θ, Φ
FIG. Reference numeral 1 is an objective lens, 2 is a relay lens, 3 is an overhead prism, 4 is an erecting prism, 5 is an eyepiece, 6 is a dividing member, 7 is a light source, 8 is an illumination lens, and the subscript R is the right eye side. L represents the left eye side. Patent applicant: Canon Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Teito complete: ? TljJE book (spontaneous) 1. Display of the case 1982 Patent Application No. 222801 2, Title of invention Stereo Microscope 3, ? Ili A person who does justice. Relationship to the incident Patent applicant address 3-30-2 Shimomaruko, Ota-ku, Tokyo Name (10
0) Canon Co., Ltd. Representative Ryu Kaku 4, Agent Address: C-104 Umejima High Town, 2-17-3 Umejima, Adachi-ku, Tokyo 121 6. Contents of amendment (1) The patent claim on page 1 of the specification Correct the range to the following sentence. 1. The optical axes of the left and right eyes are parallel to each other behind the objective lens t(, -
A stereoscopic microscope includes an objective lens, and a pair of slides arranged behind the objective lens and rotatable around an optical axis. A pair of depression angle/convergence angle adjustment means disposed between the objective lens and the 1.I-bar and having an even number of reflective surfaces sharing a common reflection surface, the depression angle/convergence angle adjustment means A stereoscopic microscope characterized in that the interpupillary distance is adjusted by rotating each of the optical systems about the optical axis tilted by the . 2. Claim 1, wherein the depression angle/convergence angle adjusting means is a prism having an even number of reflective surfaces that share a common reflective surface.
The stereomicroscope described in section. 3. The stereoscopic microscope according to claim 1, wherein the depression angle/width angle adjusting means is constituted by an even number of mirrors sharing a reflective surface. L. The stereomicroscope according to claim 1, in which a light splitting member is disposed in front of the objective lens and an illumination optical system is connected to the stereoscopic microscope," (2) page 5, lines 4 to 5. Correct "stereomicroscope that becomes parallel" to "stereomicroscope that becomes parallel and has an optical system" 6 (3) Page 5, lines 7, 8, and 11 to 12
Correct the "adjustment erecting optical system" (3 locations) in the row 1 to "adjustment optical system." (4) Correct the "object side focal position" in the 13th to 14th lines of page 6 to "object side focal position".

Claims (1)

【特許請求の範囲】 １、左右眼光軸が対物レンズの後方で平行になる実体顕
微鏡において、対物レンズと、該対物レンズの後方に配
置し光軸の廻りに回転可能な１対の眼幅調節用正立光学
系と、前記対物レンズと前記眼幅調節用正立光学系との
間に配置し反射面を共有した偶数個の反射面を有する一
対の俯角・輻輳角調節手段とを具備し、該俯角・輻輳角
調節手段により傾斜された光軸を中心に前記眼幅調節用
正立光学系をそれぞれ回転して、眼幅を調節するように
したことを特徴とする実体顕微鏡。 ２、前記俯角・輻輳角調節手段を反射面を共有した偶数
個の反射面を有するプリズムとした特許請求の範囲第１
項に記載の実体顕微鏡。 ３、前記俯角・輻輳角調節手段を反射面を共有した偶数
個のミラーにより構成した特許請求の範囲第１項に記載
の実体顕微鏡。 ４、前記眼幅調節用正立光学系を正立プリズムとした特
許請求の範囲第１項に記載の実体顕微鏡。 ５、前記正立プリズムを直角プリズムを組み合わせたポ
ロプリズム１型とした特許請求の範囲第４項に記載の実
体顕微鏡。 ６、前記対物レンズの前方に光分割部材を配置し、照明
光学系を接続した特許請求の範囲第１項に記載の実体顕
微鏡。[Claims] 1. In a stereomicroscope in which the optical axes of the left and right eyes are parallel behind the objective lens, there is provided an objective lens and a pair of interpupillary width adjusters arranged behind the objective lens and rotatable around the optical axis. and a pair of depression angle/convergence angle adjusting means disposed between the objective lens and the erecting optical system for adjusting interpupillary distance and having an even number of reflective surfaces sharing a reflective surface. A stereoscopic microscope characterized in that the interpupillary distance adjustment is adjusted by rotating each of the erecting optical systems for interpupillary distance adjustment around the optical axis tilted by the depression angle/convergence angle adjustment means. 2. Claim 1, wherein the depression angle/convergence angle adjusting means is a prism having an even number of reflective surfaces that share a common reflective surface.
The stereomicroscope described in section. 3. The stereoscopic microscope according to claim 1, wherein the depression angle/convergence angle adjusting means is constituted by an even number of mirrors sharing a reflective surface. 4. The stereoscopic microscope according to claim 1, wherein the erecting optical system for adjusting interpupillary distance is an erecting prism. 5. The stereoscopic microscope according to claim 4, wherein the erecting prism is a type 1 Porro prism in which a right-angle prism is combined. 6. The stereoscopic microscope according to claim 1, wherein a light splitting member is arranged in front of the objective lens and an illumination optical system is connected thereto.