JPH0933820A - Illumination optical system for microscope - Google Patents
Illumination optical system for microscopeInfo
- Publication number
- JPH0933820A JPH0933820A JP7207757A JP20775795A JPH0933820A JP H0933820 A JPH0933820 A JP H0933820A JP 7207757 A JP7207757 A JP 7207757A JP 20775795 A JP20775795 A JP 20775795A JP H0933820 A JPH0933820 A JP H0933820A
- Authority
- JP
- Japan
- Prior art keywords
- lens group
- magnification
- group
- condenser lens
- diaphragm
- 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
Links
Landscapes
- Microscoopes, Condenser (AREA)
Abstract
(57)【要約】
【課題】広範な対物レンズの倍率幅に対処することがで
きる照明光学系を提供する。
【解決手段】光源１に対向してコレクタレンズ群Ｌ1，
Ｌ2を設け、光源の１次像の像面に第１の絞りＡを設
け、第１の絞りＡの後ろ側に第１及び第２中間レンズ群
Ｌ3，Ｌ4を設け、第２の絞りＦを第２中間レンズ群Ｌ4
の前側焦点位置に設け、第２中間レンズ群Ｌ4の後ろ側
に高倍用及び低倍用コンデンサレンズ群１０，２０と、
アフォーカル系極低倍用コンデンサレンズ群３０とから
なるコンデンサ部ＬCを設け、各コンデンサレンズ群１
０，２０，３０を、照明光学系の光軸Ｚと直交する回転
軸Ｏを中心として回転可能に設け、高倍用又は低倍用コ
ンデンサレンズ群１０，２０の前側焦点位置が光源の２
次像の像面Ｂと一致し、第２の絞りＦと標本面２とが第
２中間レンズ群Ｌ4と高倍用又は低倍用コンデンサレン
ズ群１０，２０とに関して共役となるように構成したこ
とを特徴とする。
(57) Abstract: An illumination optical system capable of coping with a wide range of magnification of an objective lens is provided. SOLUTION: A collector lens group L 1 , facing a light source 1 ,
L 2 is provided, the first diaphragm A is provided on the image plane of the primary image of the light source, the first and second intermediate lens groups L 3 and L 4 are provided behind the first diaphragm A, and the second Set the aperture F to the second intermediate lens unit L 4
Of the condenser lens groups 10 and 20 for high magnification and low magnification on the back side of the second intermediate lens group L 4
A condenser section L C including an afocal system ultra-low magnification condenser lens group 30 is provided, and each condenser lens group 1
0, 20, 30 are rotatably provided about a rotation axis O orthogonal to the optical axis Z of the illumination optical system, and the front focal position of the high-magnification or low-magnification condenser lens group 10, 20 is 2
The second diaphragm F and the sample surface 2 coincide with the image surface B of the next image, and are configured to be conjugate with respect to the second intermediate lens unit L 4 and the high-magnification or low-magnification condenser lens groups 10 and 20. It is characterized by
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、顕微鏡に用いる
ための透過照明用の光学系に関する。FIELD OF THE INVENTION The present invention relates to an optical system for transmitted illumination for use in a microscope.
【０００２】[0002]
【発明が解決しようとする課題】顕微鏡の使用方法は多
岐に渡ってきており、検鏡法の多彩さとともに対物レン
ズの種類も低倍から高倍までと幅広く使用されている。
一方、照明系について考えてみると、一種類のコンデン
サレンズで対応できる範囲は、対物レンズの倍率幅で見
て大略１０倍程度とされている。これは、開口数と照野
との関係を一つのコンデンサレンズで満足しようとする
には限度があるからであり、すなわち高倍対物レンズの
ときには大きな開口数が必要となるのに対して、低倍対
物レンズのときには大きな照野が必要となるからであ
る。The method of using a microscope has been diversified, and along with the versatility of the spectroscopic method, the type of objective lens is widely used from low magnification to high magnification.
On the other hand, considering the illumination system, the range that can be handled by one type of condenser lens is approximately 10 times in terms of the magnification width of the objective lens. This is because there is a limit to satisfying the relationship between the numerical aperture and the illumination field with one condenser lens, that is, a high numerical aperture is required for a high-magnification objective lens, whereas a low-magnification objective lens is required. This is because a large illumination field is required for the objective lens.
【０００３】したがって対物レンズの倍率幅が１０倍程
度を越える場合には、何らかの切換え手段によってコン
デンサレンズの焦点距離を変化させる必要がある。従来
行われていた方法としては、（１）コンデンサレンズの
先玉をハネノケる、（２）コンデンサレンズの下部に別
のレンズを追加する、（３）先玉をハネノケると同時に
新規レンズを追加する、等があるが、これらの方法では
２倍程度の低倍対物レンズ迄への対応がやっとである。
また３本のコンデンサレンズをタレット式に有してい
て、対物レンズの倍率に応じて切換え、１倍対物レンズ
から１００倍対物レンズまでに対応しているものもある
が、照明光学系の光軸とほぼ平行な軸を回転軸としてい
るために、顕微鏡の他の要素との機械的な干渉を招いて
切換えが困難となる。したがって本発明は、簡易な切換
え手段によって広範な対物レンズの倍率幅に対処するこ
とができる照明光学系を提供することを課題とし、特に
１倍以下の範囲についてもカバーできる照明光学系を提
供することを課題とする。Therefore, when the magnification width of the objective lens exceeds about 10 times, it is necessary to change the focal length of the condenser lens by some switching means. The conventional methods are: (1) add a lens to the front lens of the condenser lens, (2) add another lens to the bottom of the condenser lens, and (3) add a new lens to the front lens of the condenser lens. However, with these methods, it is barely possible to deal with a low-magnification objective lens of about 2 times.
There is also a turret type that has three condenser lenses that can be switched according to the magnification of the objective lens to accommodate from a 1x objective lens to a 100x objective lens, but the optical axis of the illumination optical system. Since the axis substantially parallel to is used as the axis of rotation, mechanical interference with other elements of the microscope is caused and switching becomes difficult. Therefore, it is an object of the present invention to provide an illumination optical system capable of coping with a wide range of magnification of an objective lens by a simple switching means, and particularly to an illumination optical system capable of covering a range of 1 times or less. This is an issue.
【０００４】[0004]
【課題を解決するための手段】本発明は、光源に対向し
てコレクタレンズ群を配置し、該コレクタレンズ群によ
る光源の１次像の像面に第１の絞りを配置し、該第１の
絞りの後ろ側に第１中間レンズ群と第２の絞りと第２中
間レンズ群とをその順に配置し、該第１中間レンズ群と
該第２中間レンズ群とによって光源の２次像を形成し、
第２の絞りを第２中間レンズ群の前側焦点位置となるよ
うに配置し、第２中間レンズ群の後ろ側に、光源の２次
像からの光を標本面へ導くコンデンサ部を設け、コンデ
ンサ部は、第１の軸に沿って配置されて所定の焦点距離
を有する高倍用コンデンサレンズ群と、第２の軸に沿っ
て配置されて高倍用コンデンサレンズ群よりも長い焦点
距離を有する低倍用コンデンサレンズ群と、第３の軸に
沿って配置されてアフォーカル系レンズ群から構成され
る極低倍用コンデンサレンズ群とを備え、第１乃至第３
の軸は、照明光学系の光軸を含む平面内に配置され、高
倍用、低倍用及び極低倍用コンデンサレンズ群は、照明
光学系の光軸と直交する回転軸を中心として、平面内で
回転可能に設けられ、第１の軸を照明光学系の光軸と一
致させたときに、高倍用コンデンサレンズ群の前側焦点
位置が光源の２次像の像面と一致し、且つ第２の絞りと
標本面とが第２中間レンズ群と高倍用コンデンサレンズ
群とに関して互いに共役となるように、高倍用コンデン
サレンズ群を構成し、第２の軸を照明光学系の光軸と一
致させたときに、低倍用コンデンサレンズ群の前側焦点
位置が光源の２次像の像面と一致し、且つ第２の絞りと
標本面とが第２中間レンズ群と低倍用コンデンサレンズ
群とに関して互いに共役となるように、低倍用コンデン
サレンズ群を構成したことを特徴とする顕微鏡用照明光
学系である。According to the present invention, a collector lens group is arranged opposite to a light source, and a first diaphragm is arranged on the image plane of a primary image of the light source by the collector lens group. The first intermediate lens group, the second diaphragm, and the second intermediate lens group are arranged in that order behind the diaphragm of No. 2, and the secondary image of the light source is formed by the first intermediate lens group and the second intermediate lens group. Formed,
The second diaphragm is arranged so as to be at the front focus position of the second intermediate lens group, and a condenser section for guiding the light from the secondary image of the light source to the sample surface is provided on the rear side of the second intermediate lens group. And a low-magnification lens unit having a longer focal length than the high-magnification condenser lens unit arranged along the second axis and having a predetermined focal length and a second lens unit. A condenser lens group for ultra-low magnification and a condenser lens group for extra-low magnification arranged along the third axis and formed of an afocal system lens group.
Is arranged in a plane including the optical axis of the illumination optical system, and the high-magnification, low-magnification, and ultra-low-magnification condenser lens groups are centered on a rotation axis orthogonal to the optical axis of the illumination optical system. Rotatably provided in the inside, when the first axis is aligned with the optical axis of the illumination optical system, the front focal position of the high-magnification condenser lens group is aligned with the image plane of the secondary image of the light source, and The high-magnification condenser lens group is configured such that the second diaphragm and the sample surface are mutually conjugated with respect to the second intermediate lens group and the high-magnification condenser lens group, and the second axis coincides with the optical axis of the illumination optical system. When this is done, the front focal position of the low-magnification condenser lens group coincides with the image plane of the secondary image of the light source, and the second diaphragm and the sample surface have the second intermediate lens group and the low-magnification condenser lens group. Configure a low magnification condenser lens group so that they are conjugated with respect to and A microscope illumination optical system, characterized in that the.
【０００５】しかして第１の軸又は第２の軸を照明光学
系の光軸と一致させたときには、高倍用又は低倍用コン
デンサレンズ群の前側焦点位置が、光源の２次像の像面
と一致しているから、光源の１次像の像面に配置した第
１の絞りは、開口絞りとして機能する。また第２の絞り
と標本面とは、第２中間レンズ群と高倍用又は低倍用コ
ンデンサレンズ群に関して、互いに共役となるように配
置されているから、第２の絞りは視野絞りとして機能す
る。こうして高倍用又は低倍用コンデンサレンズ群は、
通常のケーラー照明法に従って標本面を照明する。また
第３の軸を照明光学系の光軸と一致させたときには、極
低倍用コンデンサレンズ群はアフォーカル系レンズ群に
よって構成されているから、第１の絞りは視野絞りとし
て機能する。また第２の絞りは第２中間レンズ群の前側
焦点位置となるように配置されているから、第２の絞り
は開口絞りとして機能する。他方、各コンデンサレンズ
群は、照明光学系の光軸と直交する回転軸によって回転
することにより、切り換え可能に配置されているから、
顕微鏡の他の要素との干渉を招くことなく容易に切り換
えることができる。However, when the first axis or the second axis is made coincident with the optical axis of the illumination optical system, the front focal position of the high-magnification or low-magnification condenser lens group is the image plane of the secondary image of the light source. Therefore, the first diaphragm arranged on the image plane of the primary image of the light source functions as an aperture diaphragm. Further, since the second diaphragm and the sample surface are arranged so as to be conjugate with each other with respect to the second intermediate lens group and the high-magnification or low-magnification condenser lens group, the second diaphragm functions as a field diaphragm. . In this way, the high-magnification or low-magnification condenser lens group
Illuminate the specimen surface according to the usual Koehler illumination method. When the third axis is aligned with the optical axis of the illumination optical system, the extremely low-magnification condenser lens group is made up of an afocal lens group, so the first diaphragm functions as a field diaphragm. Further, since the second diaphragm is arranged so as to be at the front focus position of the second intermediate lens group, the second diaphragm functions as an aperture diaphragm. On the other hand, each condenser lens group is arranged to be switchable by being rotated by a rotation axis that is orthogonal to the optical axis of the illumination optical system,
It can be easily switched without causing interference with other elements of the microscope.
【０００６】[0006]
【発明の実施の形態】本発明の実施の形態を図面によっ
て説明する。図１は本発明の一実施例の全体構成図を示
し、光源１を出た光は第１コレクタレンズ群Ｌ1と第２
コレクタレンズ群Ｌ2を通り、両コレクタレンズ群Ｌ1，
Ｌ2によって１次像を結ぶ。この１次像の像面の位置に
は、第１の可変絞りＡが配置されている。第１の可変絞
りＡを通過した光束は、第１中間レンズ群Ｌ3と第２の
可変絞りＦと第２中間レンズ群Ｌ4を通り、両中間レン
ズ群Ｌ3，Ｌ4によって再結像して２次像を結ぶ。したが
ってこの２次像の像面の位置とは、両中間レンズ群
Ｌ3，Ｌ4に関する第１の絞りＡの共役面Ｂとなってい
る。また第２の絞りＦは、第２中間レンズ群Ｌ4の前側
焦点位置に配置されている。第２中間レンズ群Ｌ4の後
ろ側には、光源の２次像からの光を標本面２へ導くコン
デンサ部ＬCが設けられている。なお図面では特に示し
ていないが、顕微鏡の小型化を図り、且つ顕微鏡の他の
要素との干渉を防止するために、例えば第２中間レンズ
群Ｌ4とコンデンサ部ＬCとの間にミラー（図示せず）を
介在させることができる。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an overall configuration diagram of an embodiment of the present invention. Light emitted from a light source 1 is generated by a first collector lens group L 1 and a second collector lens group L 1 .
It passes through the collector lens group L 2 , and both collector lens groups L 1 ,
The primary image is connected by L 2 . A first variable diaphragm A is arranged at the position of the image plane of this primary image. The light flux that has passed through the first variable aperture A passes through the first intermediate lens group L 3 , the second variable aperture F and the second intermediate lens group L 4, and is re-imaged by both intermediate lens groups L 3 and L 4 . And connect a secondary image. Therefore, the position of the image plane of this secondary image is the conjugate plane B of the first diaphragm A with respect to both the intermediate lens units L 3 and L 4 . The second diaphragm F is arranged at the front focal position of the second intermediate lens unit L 4 . Behind the second intermediate lens unit L 4 , a condenser unit L C for guiding the light from the secondary image of the light source to the sample surface 2 is provided. Although not shown in the drawings, in order to reduce the size of the microscope and prevent interference with other elements of the microscope, for example, a mirror (such as a mirror between the second intermediate lens unit L 4 and the condenser unit L C) is provided. (Not shown) may be interposed.
【０００７】コンデンサ部ＬCは図２に示すように、互
いに６０°間隔で設けられた第１、第２及び第３の軸ｚ
1、ｚ2及びｚ3を有し、第１の軸ｚ1に沿って高倍用コン
デンサレンズ群１０が配置されており、同様に第２の軸
ｚ2に沿って低倍用コンデンサレンズ群２０が配置さ
れ、第３の軸ｚ3に沿って極低倍用コンデンサレンズ群
３０が配置されている。第１、第２及び第３の軸ｚ1、
ｚ2及びｚ3は、照明光学系の光軸Ｚを含む平面内に配置
され、こうして高倍用、低倍用及び極低倍用コンデンサ
レンズ群１０、２０及び３０は、照明光学系の光軸Ｚと
直交する回転軸Ｏを中心として回転可能に設けられてい
る。各コンデンサレンズ群１０，２０，３０は、回転軸
Ｏを中心として回転することにより、相互に干渉するこ
となく照明光学系の光軸Ｚと同軸となるように切り換え
ることができる。As shown in FIG. 2, the capacitor section L C has a first axis z, a second axis z, and a third axis z which are provided at intervals of 60 °.
1 , z 2 and z 3 are arranged, and the high-magnification condenser lens group 10 is arranged along the first axis z 1 , and similarly, the low-magnification condenser lens group 20 is arranged along the second axis z 2. And the extremely low magnification condenser lens group 30 is arranged along the third axis z 3 . The first, second and third axes z 1 ,
z 2 and z 3 are arranged in a plane including the optical axis Z of the illumination optical system, and thus, the high-magnification, low-magnification, and ultra-low-magnification condenser lens groups 10, 20 and 30 are the optical axes of the illumination optical system. It is rotatably provided around a rotation axis O orthogonal to Z. By rotating the condenser lens groups 10, 20, and 30 about the rotation axis O, they can be switched so as to be coaxial with the optical axis Z of the illumination optical system without interfering with each other.
【０００８】第１の軸ｚ1を照明光学系の光軸Ｚと一致
させたときには、高倍用コンデンサレンズ群１０が使用
され、同様に第２の軸ｚ2を照明光学系の光軸Ｚと一致
させたときには、低倍用コンデンサレンズ群２０が使用
されるが、この高倍用及び低倍用コンデンサレンズ群１
０，２０は、次のように構成されている。すなわち高倍
用又は低倍用コンデンサレンズ群１０，２０の前側焦点
位置が、第１の絞りの共役面Ｂと一致し、且つ第２の絞
りＦと標本面２とが、第２中間レンズ群Ｌ4と高倍用又
は低倍用コンデンサレンズ群１０，２０とに関して互い
に共役となるように構成されている。また低倍用コンデ
ンサレンズ群２０の焦点距離は、高倍用コンデンサレン
ズ群１０の焦点距離よりも長く形成されている。他方、
極低倍用コンデンサレンズ群３０はアフォーカル系レン
ズ群によって形成されている。When the first axis z 1 coincides with the optical axis Z of the illumination optical system, the high-magnification condenser lens group 10 is used, and similarly, the second axis z 2 becomes the optical axis Z of the illumination optical system. When they are matched, the low-magnification condenser lens group 20 is used. This high-magnification and low-magnification condenser lens group 1
0 and 20 are configured as follows. That is, the front focus positions of the high-magnification or low-magnification condenser lens groups 10 and 20 coincide with the conjugate plane B of the first diaphragm, and the second diaphragm F and the sample surface 2 form the second intermediate lens group L. 4 and the high-magnification or low-magnification condenser lens groups 10 and 20 are configured to be conjugate with each other. Further, the focal length of the low-magnification condenser lens group 20 is formed longer than the focal length of the high-magnification condenser lens group 10. On the other hand,
The extremely low magnification condenser lens group 30 is formed by an afocal lens group.
【０００９】各コンデンサレンズ群は切り換えて使用さ
れるが、このうち高倍用コンデンサレンズ群１０は、本
実施例では対物レンズの倍率が１０倍〜１００倍のとき
に選択され、低倍用コンデンサレンズ群２０は、対物レ
ンズの倍率が２倍〜４倍のときに選択され、極低倍用コ
ンデンサレンズ群３０は、対物レンズの倍率が０．５倍
〜１倍のときに選択される。対物レンズの照野は、本実
施例では対物レンズの倍率が０．５倍のときに直径５０
ｍｍとしている。Each of the condenser lens groups is used by switching. Among them, the high magnification condenser lens group 10 is selected when the magnification of the objective lens is 10 to 100 times in this embodiment, and the low magnification condenser lens group 10 is selected. The group 20 is selected when the magnification of the objective lens is 2 to 4 times, and the ultra-low magnification condenser lens group 30 is selected when the magnification of the objective lens is 0.5 to 1 times. In the present embodiment, the illumination field of the objective lens has a diameter of 50 when the magnification of the objective lens is 0.5.
mm.
【００１０】本実施例は以上のように構成されており、
高倍用又は低倍用コンデンサレンズ群１０，２０の前側
焦点位置は第１の絞りの共役面Ｂにあるから、第１の絞
りＡは開口絞りとして機能する。また第２の絞りＦと標
本面２とは、第２中間レンズ群Ｌ4と高倍用又は低倍用
コンデンサレンズ群１０，２０に関して共役な関係にあ
るから、第２の絞りＦは視野絞りとして機能する。こう
して高倍用又は低倍用コンデンサレンズ群１０，２０
は、通常のケーラー照明法に従って標本面２を照明す
る。また極低倍用コンデンサレンズ群３０はアフォーカ
ル系レンズ群によって構成されているから、第１の絞り
Ａは視野絞りとして機能する。また第２の絞りＦは第２
中間レンズ群Ｌ4の前側焦点位置に配置されているか
ら、第２の絞りＦは開口絞りとして機能する。したがっ
て低倍対物レンズにとって重要な開口の制限を行うこと
ができる。他方、各コンデンサレンズ群１０，２０，３
０は、照明光学系の光軸と直交する回転軸Ｏによって切
り換えられるから、顕微鏡の他の要素との干渉を招くこ
となく容易に切り換えることができる。このため０．５
倍対物レンズ時の５０ｍｍというような大きな照野に対
応することも可能となっている。This embodiment is constructed as described above,
Since the front focal position of the high-magnification or low-magnification condenser lens groups 10 and 20 is on the conjugate plane B of the first diaphragm, the first diaphragm A functions as an aperture diaphragm. Further, since the second diaphragm F and the sample surface 2 have a conjugate relationship with the second intermediate lens group L 4 and the high-magnification or low-magnification condenser lens groups 10 and 20, the second diaphragm F is a field diaphragm. Function. Thus, the high-magnification or low-magnification condenser lens group 10, 20
Illuminates the sample surface 2 according to the usual Koehler illumination method. Further, since the extremely low magnification condenser lens group 30 is composed of an afocal lens group, the first diaphragm A functions as a field diaphragm. The second diaphragm F is the second
The second diaphragm F functions as an aperture diaphragm because it is arranged at the front focal position of the intermediate lens unit L 4 . Therefore, it is possible to limit the aperture which is important for the low magnification objective lens. On the other hand, each condenser lens group 10, 20, 3
Since 0 can be switched by the rotation axis O orthogonal to the optical axis of the illumination optical system, it can be easily switched without causing interference with other elements of the microscope. Therefore 0.5
It is also possible to deal with a large illumination field of 50 mm when using a double objective lens.
【００１１】次に図３は別の実施例のコンデンサ部ＬC
を示す。この実施例の低倍用コンデンサレンズ群２０
は、最も長い空気間隔を以て隔てられた前群２１と後群
２２とを有し、コンデンサ部の回転軸Ｏは、この前群２
１と後群２２との間に位置している。同様に極低倍用コ
ンデンサレンズ群３０は、負屈折力を有する前群３１と
正屈折力を有する後群３２とを有し、コンデンサ部の回
転軸Ｏは、この前群３１と後群３２との間に位置してい
る。このように構成することにより、コンデンサ部ＬC
の小型化を図ることができる。Next, FIG. 3 shows a capacitor section L C of another embodiment.
Is shown. Low magnification condenser lens group 20 of this embodiment
Has a front group 21 and a rear group 22 which are separated by the longest air space, and the rotation axis O of the condenser section is the front group 2
It is located between 1 and the rear group 22. Similarly, the ultra-low magnification condenser lens group 30 has a front group 31 having a negative refracting power and a rear group 32 having a positive refracting power, and the rotation axis O of the condenser portion is the front group 31 and the rear group 32. It is located between and. With this configuration, the capacitor L C
Can be reduced in size.
【００１２】[0012]
【発明の効果】以上のように本発明の照明光学系によれ
ば、簡易な切換え手段によって広範な対物レンズの倍率
幅に対処することができる。As described above, according to the illumination optical system of the present invention, a wide range of magnifications of the objective lens can be dealt with by a simple switching means.
【図１】本発明の一実施例を示す概略構成図FIG. 1 is a schematic configuration diagram showing one embodiment of the present invention.
【図２】該実施例のコンデンサ部を示す概略構成図FIG. 2 is a schematic configuration diagram showing a capacitor section of the embodiment.
【図３】別の実施例のコンデンサ部を示す概略構成図FIG. 3 is a schematic configuration diagram showing a capacitor section of another embodiment.
１…光源 ２…標本面 Ｌ1…第１コレクタレンズ群 Ｌ2…第２
コレクタレンズ群 Ｌ3…第１中間レンズ群 Ｌ4…第２
中間レンズ群 Ａ…第１の可変絞り Ｆ…第２の
可変絞り Ｂ…第１の絞りの共役面 ＬC…コン
デンサ部 １０…高倍用コンデンサレンズ群 ２０…低倍
用コンデンサレンズ群 ３０…極低倍用コンデンサレンズ群 ２１，３１
…前群 ２２，３２…後群 Ｚ…照明光
学系の光軸 ｚ1，ｚ2，ｚ3…軸 Ｏ…回転軸1 ... Light source 2 ... Specimen surface L 1 ... 1st collector lens group L 2 ... 2nd
Collector lens group L 3 ... 1st intermediate lens group L 4 ... 2nd
Intermediate lens group A ... First variable diaphragm F ... Second variable diaphragm B ... Conjugate surface of first diaphragm L C ... Condenser section 10 ... High magnification condenser lens group 20 ... Low magnification condenser lens group 30 ... Extremely low Double condenser lens group 21, 31
... front group 22, 32 ... rear group Z ... optical axis of illumination optical system z 1 , z 2 , z 3 ... axis O ... rotation axis
Claims (3)
し、該コレクタレンズ群による前記光源の１次像の像面
に第１の絞りを配置し、 該第１の絞りの後ろ側に第１中間レンズ群と第２の絞り
と第２中間レンズ群とをその順に配置し、該第１中間レ
ンズ群と該第２中間レンズ群とによって前記光源の２次
像を形成し、前記第２の絞りを前記第２中間レンズ群の
前側焦点位置となるように配置し、 前記第２中間レンズ群の後ろ側に、前記光源の２次像か
らの光を標本面へ導くコンデンサ部を設け、 前記コンデンサ部は、第１の軸に沿って配置されて所定
の焦点距離を有する高倍用コンデンサレンズ群と、第２
の軸に沿って配置されて前記高倍用コンデンサレンズ群
よりも長い焦点距離を有する低倍用コンデンサレンズ群
と、第３の軸に沿って配置されてアフォーカル系レンズ
群から構成される極低倍用コンデンサレンズ群とを備
え、 前記第１乃至第３の軸は、照明光学系の光軸を含む平面
内に配置され、 前記高倍用、低倍用及び極低倍用コンデンサレンズ群
は、前記照明光学系の光軸と直交する回転軸を中心とし
て、前記平面内で回転可能に設けられ、 前記第１の軸を前記照明光学系の光軸と一致させたとき
に、前記高倍用コンデンサレンズ群の前側焦点位置が前
記光源の２次像の像面と一致し、且つ前記第２の絞りと
前記標本面とが前記第２中間レンズ群と前記高倍用コン
デンサレンズ群とに関して互いに共役となるように、前
記高倍用コンデンサレンズ群を構成し、 前記第２の軸を前記照明光学系の光軸と一致させたとき
に、前記低倍用コンデンサレンズ群の前側焦点位置が前
記光源の２次像の像面と一致し、且つ前記第２の絞りと
前記標本面とが前記第２中間レンズ群と前記低倍用コン
デンサレンズ群とに関して互いに共役となるように、前
記低倍用コンデンサレンズ群を構成したことを特徴とす
る顕微鏡用照明光学系。1. A collector lens group is arranged to face a light source, a first diaphragm is arranged on an image plane of a primary image of the light source formed by the collector lens group, and a first diaphragm is arranged behind the first diaphragm. A first intermediate lens group, a second diaphragm, and a second intermediate lens group are arranged in that order, and a secondary image of the light source is formed by the first intermediate lens group and the second intermediate lens group. Is disposed so as to be at the front focus position of the second intermediate lens group, and a condenser unit for guiding the light from the secondary image of the light source to the sample surface is provided on the rear side of the second intermediate lens group. The condenser unit includes a high-magnification condenser lens unit arranged along a first axis and having a predetermined focal length;
A low-magnification condenser lens group having a longer focal length than the high-magnification condenser lens group and an afocal lens group arranged along the third axis. A condenser lens group for magnification, the first to third axes are arranged in a plane including the optical axis of the illumination optical system, and the condenser lens group for high magnification, low magnification and extremely low magnification are The high magnification condenser is rotatably provided in the plane about a rotation axis orthogonal to the optical axis of the illumination optical system, and when the first axis is aligned with the optical axis of the illumination optical system. The front focus position of the lens group coincides with the image plane of the secondary image of the light source, and the second diaphragm and the sample surface are conjugate with each other with respect to the second intermediate lens group and the high-magnification condenser lens group. As described above, When forming a lens group, and the second axis is aligned with the optical axis of the illumination optical system, the front focal position of the low magnification condenser lens group is aligned with the image plane of the secondary image of the light source. The low magnification condenser lens group is configured such that the second diaphragm and the sample surface are conjugate with each other with respect to the second intermediate lens group and the low magnification condenser lens group. Illumination optics for microscopes.
折力を有する前群と正屈折力を有する後群とを有し、前
記コンデンサ部の前記回転軸は、前記前群と前記後群と
の間に位置することを特徴とする請求項１記載の顕微鏡
用照明光学系。2. The extremely low magnification condenser lens group has a front group having a negative refracting power and a rear group having a positive refracting power, and the rotating shaft of the condenser section has the front group and the rear group. The illumination optical system for a microscope according to claim 1, wherein the illumination optical system is located between the group and the group.
い空気間隔を以て隔てられた前群と後群とを有し、前記
コンデンサ部の前記回転軸は、前記前群と前記後群との
間に位置することを特徴とする請求項１又は２記載の顕
微鏡用照明光学系。3. The low-magnification condenser lens group has a front group and a rear group which are separated by the longest air space, and the rotary shaft of the condenser section is composed of the front group and the rear group. The illumination optical system for a microscope according to claim 1 or 2, wherein the illumination optical system is located between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7207757A JPH0933820A (en) | 1995-07-20 | 1995-07-20 | Illumination optical system for microscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7207757A JPH0933820A (en) | 1995-07-20 | 1995-07-20 | Illumination optical system for microscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0933820A true JPH0933820A (en) | 1997-02-07 |
Family
ID=16545048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7207757A Pending JPH0933820A (en) | 1995-07-20 | 1995-07-20 | Illumination optical system for microscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0933820A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6212005B1 (en) | 1998-02-06 | 2001-04-03 | Olympus Optical Co., Ltd. | Microscope illumination optical system and microscope having the same |
| US6989926B2 (en) | 2002-11-29 | 2006-01-24 | Leica Microsystems Wetzlar Gmbh | Transmitted-light illumination device for a microscope |
| CN103060507A (en) * | 2013-01-06 | 2013-04-24 | 莱芜钢铁集团有限公司 | Converter vacuum steelmaking method |
| JP2017146496A (en) * | 2016-02-18 | 2017-08-24 | 三菱電機株式会社 | Light source for illumination |
-
1995
- 1995-07-20 JP JP7207757A patent/JPH0933820A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6212005B1 (en) | 1998-02-06 | 2001-04-03 | Olympus Optical Co., Ltd. | Microscope illumination optical system and microscope having the same |
| US6989926B2 (en) | 2002-11-29 | 2006-01-24 | Leica Microsystems Wetzlar Gmbh | Transmitted-light illumination device for a microscope |
| CN103060507A (en) * | 2013-01-06 | 2013-04-24 | 莱芜钢铁集团有限公司 | Converter vacuum steelmaking method |
| JP2017146496A (en) * | 2016-02-18 | 2017-08-24 | 三菱電機株式会社 | Light source for illumination |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6809861B2 (en) | Optical apparatus | |
| EP2202557B1 (en) | A method of modifying an inverted microscope | |
| WO1999012068A1 (en) | Transmission illuminator for microscopes | |
| EP0535218A1 (en) | Illumination system and method for a high definition light microscope | |
| JPH08190056A (en) | Optical observation device | |
| US4657357A (en) | Illumination system for single objective lens binocular microscope | |
| JPH06289301A (en) | Vertical illuminating optical system for microscope | |
| JPS6134127B2 (en) | ||
| US4397529A (en) | Illumination system for microscopes | |
| WO1994002872A1 (en) | Illumination system and method for a high definition light microscope | |
| JP2002365555A (en) | Illumination optical system for microscope | |
| JPH0933820A (en) | Illumination optical system for microscope | |
| JP2002098899A (en) | Fluorescent microscope | |
| US4807980A (en) | Universal condenser having only a single turret for a microscope | |
| US2766655A (en) | Phase contrast microscope | |
| JP3861372B2 (en) | microscope | |
| JPH10142514A (en) | Condenser lens and microscope illumination optical system using the same | |
| JP3757529B2 (en) | Microscope illumination optics | |
| JP3869087B2 (en) | Microscope illumination optics | |
| JP2512876B2 (en) | Illumination optics for stereo microscopes | |
| JPH07104192A (en) | Tv observation device for microscope | |
| US20050099679A1 (en) | Microscope especially inverted microscope | |
| EP0756717A1 (en) | Illumination system and method for a high definition light microscope | |
| JP2980157B2 (en) | microscope | |
| JPH11287956A (en) | Lens barrel for observation provided to microscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040705 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040713 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20050201 |