JP4094108B2

JP4094108B2 - Inverted microscope device

Info

Publication number: JP4094108B2
Application number: JP07451198A
Authority: JP
Inventors: 寧青野
Original assignee: Olympus Corp
Current assignee: Olympus Corp
Priority date: 1998-03-23
Filing date: 1998-03-23
Publication date: 2008-06-04
Anticipated expiration: 2018-03-23
Also published as: CN1139830C; JPH11271640A; CN1233764A

Description

【０００１】
【発明の属する技術分野】
この発明は、倒立顕微鏡に関し、例えば培養細胞の成育状態のチェック等のルーティンワークに使用される倒立顕微鏡に関する。
【０００２】
【従来の技術】
倒立顕微鏡は、ステージの下側から標本を観察するため、シャーレやフラスコ等の培養容器に入った標本等であっても容易に観察することができる。このため、生細胞を扱う研究や臨床の現場で幅広く採用され、使用されている。
【０００３】
倒立顕微鏡のなかには、培養細胞の成育状態のチェック等、実験前段階でのルーティンワーク用途のために使用される培養倒立顕微鏡と呼ばれる機種がある。この培養倒立顕微鏡は、クリーンベンチ内部等の狭い空間での使用に対応できるように、コンパクトであること、操作部が観察者に近い手前側に設けられていることが必要である。また、この培養倒立顕微鏡は、一つの研究室に多数配備されることが多いから、価格が安いことも重要である。
【０００４】
培養倒立顕微鏡には、様々な態様の観察光路が採用されているが、このうち、対物レンズから垂直下方に進む観察光路を、全反射ミラーによって斜め上向きに反射して観察者の方向へ導くようにしたものがある。この態様の観察光路によれば、顕微鏡内部の光路反射回数が１回で済み、しかも観察者が自然な体勢で顕微鏡を覗き込めるという利点がある。
【０００５】
しかし一方で、斜め上向きの観察光路が対物レンズを切換えるためのレボルバの観察者側の近接位置を通過することになるため、レボルバを操作するためのスペースが観察光路によって狭められるという欠点がある。このため、レボルバの操作性を良好にするために、レボルバを保持するユニットの構成や配置等に工夫が必要である。
【０００６】
例えば、特開平３−１７２８１６号公報に開示されている顕微鏡は、レボルバ保持台を観察光路の横、観察者から見て右手前側に延出することで観察光路及び操作スペースを確保するようにしている。また特開平８−４３７４１号公報に開示されている顕微鏡は、レボルバ保持台をレボルバの後側に延出することで、観察光路及び操作スペースを確保するようにしている。
【０００７】
【発明が解決しようとする課題】
特開平３−１７２８１６号公報に開示されている顕微鏡の構成においては、左手によるレボルバの操作性は確保されるものの、レボルバ保持台が観察者の右側にせり出した格好となる。このため、顕微鏡装置の横幅寸法が大きくなるから培養倒立顕微鏡の構成としては好ましくない。
【０００８】
また、特開平８−４３７４１号公報に開示されている顕微鏡の構成によれば、レボルバの手前側に操作スペースが確保されるため、操作性は向上する。しかし、この顕微鏡では、レボルバ保持台がレボルバの後ろ側に配置されているため、レボルバ保持台とハンドル等の操作部とを接続する比較的長尺なる腕部材が必要となる。このような構成であると、前記腕部材の剛性を確保しなければならないから、装置のサイズや重量が増加する。
【０００９】
また、この機構では、上記腕部材が上下可動範囲内において他の部品と干渉することを避けるために、腕部材を複雑な形状としなければならない。このため、この腕部材は高価な部品となり、顕微鏡の内部構成も複雑になるため、組立費用も含めたトータルの製品コストは高いものになる。
したがって、この発明の目的とするところは、よりコンパクトで剛性が高く、かつハンドル操作性の良い倒立顕微鏡を提供することにある。
【００１０】
【課題を解決するための手段】
この発明は、対物レンズを通過した観察光を反射ミラーによって斜め上向きに反射し、観察者側に導く倒立顕微鏡装置において、観察光学系と、観察光学系の一部を収容する内部空間を有する顕微鏡本体フレームと、前記対物レンズを保持するレボルバと、一端側に前記レボルバを保持すると共に他端側が観察者側に延出され、かつこの他端側に前記反射ミラーで反射された斜め上向きの観察光路を通す第１の通孔部が設けられてなるレボルバ保持部材と、前記内部空間を形成する前記顕微鏡本体フレームの両側壁を連結し、前記レボルバ保持部材よりも前記観察者側で前記内部空間を横断するように前記顕微鏡本体フレームに固定され、前記レボルバ保持部材を保持するとともに、前記斜め上向きの観察光路を通す第２の通孔部が設けられてなる固定部材と、前記レボルバ保持部材と前記固定部材との間に設けられ、前記レボルバ保持部材を前記対物レンズの光軸方向に沿って移動させる案内機構と、前記固定部材よりも前記観察者側に設けられ、前記レボルバ保持部材を上下方向に駆動するための駆動機構と、この駆動機構に取着され、この駆動機構を作動させるハンドルとを有し、前記第２の通孔部は、前記固定部材の上方に開放するＵ字開放部と、この開放部を閉じるように形成されたブリッジ部とからなることを特徴とする。
【００１１】
このような構成によれば、レボルバ保持台に通孔部を設けたことにより、このレボルバ保持台を観察者側に延出させることができるから、左右の出っ張りの少ないコンパクトな構成とすることができる。また、ハンドルとレボルバ保持台の位置を近接させることができるため、前記駆動機構の構成を単純化することができ、信頼性の高いものとすることができる。
【００１６】
【発明の実施の形態】
以下、この発明の一実施形態を図面を参照して説明する。
図１は本発明の倒立顕微鏡を左側面方向から見た中心断面図であり、図２は図１のＸ−Ｘ矢視線に沿った断面を観察者側から見た断面図である。
【００１７】
図１中、符号１で示すのは観察光学系２を保持する顕微鏡本体フレームである。この顕微鏡本体フレーム１の上面にはステージ３が設けられており、このステージ３上には観察標本４が保持されている。
【００１８】
このステージ３の上方には、前記標本４を照明する図示しない照明光学系が設けられている。この照明光学系により前記標本４を照明すると、この標本４を透過した光は、前記顕微鏡本体フレーム１内に保持された観察光学系２によって図に実線及び一点鎖線で示す光路Ｌ上を進み、観察者側に設けられた接眼レンズ５に達するようになっている。
【００１９】
次に、この観察光学系２について詳しく説明する。
まず、この観察光学系２は、前記標本４の直下に対向して設けられた対物レンズ７と、前記顕微鏡本体フレーム１に取着され前記対物レンズ７を通過した光を斜め上方向に反射する反射ミラー８と、この反射ミラー８で斜め上方向に反射した光を通す観察鏡筒９と、この鏡筒９に設けられたリレーレンズ１０及び前記接眼レンズ５を有する。
【００２０】
前記対物レンズ７は、レボルバ１１に保持されており、このレボルバ１１は、レボルバ保持台１２によって保持されている。前記顕微鏡本体フレーム１には図に１４で示す空間部が設けられ、前記レボルバ１１の周囲に観察者が手を差し込んで対物レンズの切換操作を行なえるように構成されている。
【００２１】
また、このレボルバ１１の下側には、図に二点鎖線で示す光路分割ユニット１７が挿脱自在に介挿されるようになっている。
一方、前記レボルバ保持台１２は、前記空間部１４内に位置し前記レボルバ１１を保持する水平部１２ａと、この水平部１２ａの観察者側の端部から下方に延出され前記顕微鏡本体フレーム１内に挿入された垂直部１２ｂとからなる。
【００２２】
このレボルバ保持台１２は、前記垂直部１２ｂに取り付けられたリニアガイド１５を介して、前記顕微鏡本体フレーム１に固定された固定部材１６に上下移動自在に保持されている。この固定部材１６は、例えばボルト（図２に示す１６ａ）等の固定具によって顕微鏡本体フレーム１に固定されている。
【００２３】
また、前記レボルバ保持台１２の垂直部１２ｂと前記固定部材１６には、前記反射ミラー８で反射された斜め上方向の光を通すための通孔部１８、１９がそれぞれ設けられている。図２は、これらの通孔部１８、１９の構成を分かりやすくするために示したＸ−Ｘ線に沿う縦断面図である。
【００２４】
すなわち、前記レボルバ保持台１２の垂直部１２ｂに設けられた通孔部１８は縦長の長円形をなしている。また、前記前記固定部材１６に設けられた通孔部１９は、上方に開放するＵ字開放部１９ａと、このＵ字開放部１９ａの開放側を閉じるブリッジ部１９ｂとからなる。
【００２５】
なお、前記顕微鏡本体フレーム１の前記固定部材１６の上方に対応する部分は、この固定部材１６及び前記レボルバ保持台１２の取り付け性を考え、上方に開放している。すなわち、図２に示すように、この顕微鏡本体フレーム１は、前記固定部材を挟む一対の三角形部分１ａ，１ａを前記固定部材１６の下側に配設された梁部材１ｂ（補強部）で結合してなる形状を有する。そして、この顕微鏡本体フレーム１の上記上方に開放した部分は、プラスチック成型品等からなる薄肉のカバー２１で覆われている。また、前記レボルバ保持台１２には図１に示すように防水カバー２２が固定されている。この防水カバー２２は、前記薄肉カバー２１に被さるように設けられ、顕微鏡本体フレーム１内への水等の侵入を防いでいる。
【００２６】
一方、前記レボルバ保持台１２の垂直部１２ｂにはアーム２３が設けられており、このアーム２３は前記固定部材１６の通孔部１９を通って観察者側に延出されている。そして、このアーム２３には、観察者側の端部に上下方向に沿うラックギア２４ａが延設されてなるラックギア部材２４がボルト２５によって固定されている。
【００２７】
また、前記顕微鏡本体フレーム１には、前記ラックギア２４ａと歯合するピニオンギア２７が回転自在に保持されており、このピニオンギア２７には、このピニオンギア２７と同軸に設けられ回転駆動するためのハンドル２８が取り付けられている。
【００２８】
したがって、このハンドル２８を回転駆動することで、前記ピニオンギア２７及びラックギア２４ａを介して前記レボルバ保持台１２を上下させることができ、このことによって対物レンズ７を上下に移動させ標本４のピント合わを行うことができるようになっている。
【００２９】
また、前記固定部材１６には、前記レボルバ保持台１２のアーム２３と当接し、このレボルバ保持台１２の上下移動量を規制する規制部３０ａ、３０ｂが設けられている。図２から分かるように、この規制部３０ａ、３０ｂは、前記アーム２３を囲むように設けられた凹部により構成されている。
【００３０】
このような構成によれば、観察者がハンドル２８を回転駆動することによりレボルバ保持台１２が上下方向に移動すると、所定の移動量により前記アーム２３が前記規制部３０ａ、３０ｂと突き当たるから、その移動が規制される。
【００３１】
以上説明したこの実施形態の構成によれば、次の効果を得ることができる。
第１に、前記レボルバ保持台１２に斜め上方向に延びる観察光路Ｌを通す通孔部１８を設けるようにしたから、このレボルバ保持台１２を観察者側に延出することができる。このことにより、倒立顕微鏡装置の幅寸法を減少させることができる。また、操作ハンドル２８とレボルバ保持台１２とを近接させることができるから、両者を長尺の腕部材等で接続する必要がない。
【００３２】
また、このハンドル２８とレボルバ保持台１２とが近接しているから、前記ラックギア２４ａを小さくて単純な形状にでき、たとえば打ち抜き加工品のような安価な部材で形成することができる。また、前記規制部３０ａ，３０ｂは前記固定部材と一体で構成されており、部品点数が少ない。
【００３３】
従って、斜め上向きの観察光路を有する倒立型顕微鏡装置において、コンパクトで安価な構成を実現できる。
第２に、レボルバ保持台１２および固定部材１６に前記通孔部１８及び１９を設ける構成であると、剛性の低下が懸念される。しかし、この実施形態によれば、前記固定部材１６には前記Ｕ字開放部１９ａの開放側を閉じるブリッジ部１９ｂを設けると共に、かつ、顕微鏡本体フレーム１には三角形部分１ａと連結梁部材１ｂからなる梁構造（図２）が採用され、剛性が高められている。これにより、剛性を維持しつつ前記第１の効果を得ることができる。
【００３４】
第３に、前記ラックギア２４ａとピニオンギア２７の歯合点と、前記レボルバ保持台１２と当接する固定部材１６の規制部３０ａ、３０ｂとを近接させることができるから、前記レボルバ１１の倒れを防止することができる。
【００３５】
すなわち、上記ハンドル２８を回転駆動すると、所定の移動量により前記アーム２３と前記規制部３０ａ、３０ｂとが突き当たり、前記レボルバ保持台１２の移動が規制される。この状態からさらにハンドル２８を回転駆動しようとすると、前記規制部３０ａとアーム２３との当接点を支点とする回転モーメントが生じる。この回転モーメントは、前記保持台１２及びレボルバ１１を倒す方向に働くことになる。そして、この回転モーメントの大きさは、前記ラックピニオンの歯合点と前記規制部３０ａ、３０ｂ間の距離に比例する。
【００３６】
この発明の構成によれば、前記レボルバ保持台１２をハンドル２８に近い位置に延出することができるから、前記距離を小さくすることが可能であり、したがって、前記レボルバ１１の倒れを有効に防止することができる。
【００３７】
第４に、前記レボルバ１１を操作するための空間部１４を広くとることができる効果がある。すなわち、この実施形態の構成では、前記顕微鏡本体フレーム１の開放部分を覆うカバー２１を顕微鏡本体フレーム１よりも薄肉の部材で構成するようにした。このことにより、前記レボルバ１１を操作するための空間部１４を広くとることができる。一方、必要な剛性は前記ブリッジ１９ｂ及び梁部材１ｂにより確保されているから強度上の問題はない。
【００３８】
なお、この発明は上記一実施形態に限定されるものではなく発明の要旨を変更しない範囲で種々変形可能である。
例えば、前記一実施形態では、ピニオンギア２７とラックギア２４ａとを直接歯合させるようにしたが、ピニオンギア２７とラックギア２４ａの間に、減速ギヤを介挿するようにしても良い。
【００３９】
また、顕微鏡本体フレーム１を部分的に薄肉にするように成型しても良く、且つ組み立ての作業性に問題が無ければ、顕微鏡本体フレーム１とカバー２１を一体の部品としても良い。また、図１によれば、カバー２１は固定部材１６の上方の箇所から鏡筒９と組み付く箇所まで一体の構造となっているが、組み立ての作業性を考慮して別の部品としても良い。その他、各構成要素の詳細な形状は、図に示した限りではない。
【００４０】
【発明の効果】
この発明によれば、コンパクトで剛性が高く、かつ観察者による操作性が良い倒立顕微鏡を提供することができる。
【図面の簡単な説明】
【図１】この発明の一実施形態を示す中央縦断面図。
【図２】図１のＸ−Ｘ線に沿う縦断面図。
【符号の説明】
１…顕微鏡本体フレーム
１ｂ…梁部材（補強部）
２…観察光学系
３…ステージ
４…観察標本
５…接眼レンズ
７…対物レンズ
８…反射ミラー
１１…レボルバ
１２…レボルバ保持台（レボルバー保持部材）
１２ａ…水平部
１２ｂ…垂直部
１４…空間部
１５…リニアガイド
１６…固定部材
１７…光路分割ユニット
１８…通孔部
１９ｂ…ブリッジ部
１９ａ…Ｕ字開放部
２１…カバー
２２…防水カバー
２４ａ…ラックギア（駆動機構）
２４…ラックギア部材
２７…ピニオンギア（駆動機構）
２８…ハンドル
３０ａ…規制部
Ｌ…観察光路[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inverted microscope, for example, an inverted microscope used for routine work such as checking the growth state of cultured cells.
[0002]
[Prior art]
Since the inverted microscope observes the specimen from the lower side of the stage, even an specimen in a culture container such as a petri dish or a flask can be easily observed. For this reason, it is widely adopted and used in research and clinical settings dealing with living cells.
[0003]
Among inverted microscopes, there is a model called an inverted culture microscope that is used for routine work applications in the pre-experimental stage, such as checking the growth state of cultured cells. This culture inverted microscope needs to be compact and to have an operation unit provided on the near side close to the observer so that it can be used in a narrow space such as inside a clean bench. Moreover, since many culture inverted microscopes are often deployed in one laboratory, it is important that the price is low.
[0004]
Various types of observation optical paths are used in the culture inverted microscope, and among these, the observation optical path that travels vertically downward from the objective lens is reflected obliquely upward by the total reflection mirror and guided toward the observer. There is something that was made. According to the observation optical path of this aspect, the number of reflections of the optical path inside the microscope is only one, and there is an advantage that the observer can look into the microscope with a natural posture.
[0005]
However, on the other hand, since the obliquely upward observation optical path passes through the close position on the observer side of the revolver for switching the objective lens, there is a drawback that the space for operating the revolver is narrowed by the observation optical path. For this reason, in order to improve the operability of the revolver, it is necessary to devise the configuration and arrangement of the unit that holds the revolver.
[0006]
For example, in the microscope disclosed in Japanese Patent Laid-Open No. 3-172816, the observation beam path and the operation space are secured by extending the revolver holding base to the side of the observation beam path and to the right front side when viewed from the observer. Yes. In the microscope disclosed in Japanese Patent Laid-Open No. 8-43741, an observation optical path and an operation space are secured by extending a revolver holding base to the rear side of the revolver.
[0007]
[Problems to be solved by the invention]
In the configuration of the microscope disclosed in JP-A-3-172816, the operability of the revolver with the left hand is ensured, but the revolver holding stand is projected to the right side of the observer. For this reason, since the horizontal width dimension of a microscope apparatus becomes large, it is not preferable as a structure of a culture inverted microscope.
[0008]
In addition, according to the configuration of the microscope disclosed in Japanese Patent Application Laid-Open No. 8-43741, the operation space is secured on the front side of the revolver, so that the operability is improved. However, in this microscope, since the revolver holding base is disposed on the rear side of the revolver, a relatively long arm member for connecting the revolver holding base and an operation unit such as a handle is required. With such a configuration, the arm member must have sufficient rigidity, which increases the size and weight of the device.
[0009]
In this mechanism, the arm member must have a complicated shape in order to prevent the arm member from interfering with other parts within the vertically movable range. For this reason, this arm member becomes an expensive part, and the internal structure of the microscope is complicated, so that the total product cost including the assembly cost is high.
Accordingly, an object of the present invention is to provide an inverted microscope that is more compact, has high rigidity, and has good handle operability.
[0010]
[Means for Solving the Problems]
This invention is a microscope having an internal space and reflected obliquely upward by the reflecting mirror observation light having passed through the objective lens, the inverted microscope apparatus for guiding the viewer side, which accommodates the observation optical system, a part of the observation optical system A main body frame, a revolver that holds the objective lens, and an obliquely upward observation that holds the revolver on one end side and the other end side extends to the observer side and is reflected on the other end side by the reflection mirror A revolver holding member provided with a first through hole for passing an optical path is connected to both side walls of the microscope main body frame forming the internal space, and the internal space is closer to the observer than the revolver holding member. A second through-hole portion that is fixed to the microscope main body frame so as to cross the axis, holds the revolver holding member, and passes the obliquely upward observation optical path. A fixing member, a guide mechanism that is provided between the revolver holding member and the fixing member and moves the revolver holding member along the optical axis direction of the objective lens, and the observer side with respect to the fixing member And a drive mechanism for driving the revolver holding member in the vertical direction, and a handle attached to the drive mechanism for operating the drive mechanism. It is characterized by comprising a U-shaped opening part opened above the fixing member and a bridge part formed so as to close the opening part .
[0011]
According to such a configuration, since the revolver holding base can be extended to the observer side by providing the through hole portion in the revolver holding base, a compact configuration with few left and right protrusions can be obtained. it can. In addition, since the position of the handle and the revolver holding base can be brought close to each other, the configuration of the drive mechanism can be simplified and the reliability can be improved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a central cross-sectional view of the inverted microscope of the present invention as viewed from the left side direction, and FIG. 2 is a cross-sectional view of the cross section taken along the line XX in FIG.
[0017]
In FIG. 1, reference numeral 1 denotes a microscope main body frame that holds the observation optical system 2. A stage 3 is provided on the upper surface of the microscope main body frame 1, and an observation specimen 4 is held on the stage 3.
[0018]
An illumination optical system (not shown) for illuminating the specimen 4 is provided above the stage 3. When the specimen 4 is illuminated by the illumination optical system, the light transmitted through the specimen 4 travels on an optical path L indicated by a solid line and a one-dot chain line in the drawing by the observation optical system 2 held in the microscope main body frame 1. It reaches the eyepiece 5 provided on the observer side.
[0019]
Next, the observation optical system 2 will be described in detail.
First, the observation optical system 2 reflects the objective lens 7 provided directly opposite to the specimen 4 and the light attached to the microscope body frame 1 and passing through the objective lens 7 in an obliquely upward direction. A reflection mirror 8, an observation barrel 9 that allows light reflected obliquely upward by the reflection mirror 8, and a relay lens 10 and the eyepiece 5 provided in the barrel 9 are provided.
[0020]
The objective lens 7 is held by a revolver 11, and the revolver 11 is held by a revolver holding base 12. The microscope main body frame 1 is provided with a space portion 14 shown in the figure, and is configured so that an observer can insert a hand around the revolver 11 to switch the objective lens.
[0021]
An optical path splitting unit 17 indicated by a two-dot chain line in the figure is removably inserted below the revolver 11.
On the other hand, the revolver holding base 12 is located in the space portion 14 and extends downward from an observer-side end portion of the horizontal portion 12a that holds the revolver 11 and the horizontal portion 12a. And a vertical portion 12b inserted therein.
[0022]
The revolver holding base 12 is held by a fixing member 16 fixed to the microscope body frame 1 through a linear guide 15 attached to the vertical portion 12b so as to be movable up and down. The fixing member 16 is fixed to the microscope main body frame 1 by a fixing tool such as a bolt (16a shown in FIG. 2).
[0023]
In addition, the vertical portion 12b of the revolver holding base 12 and the fixing member 16 are provided with through holes 18 and 19 for allowing light in an obliquely upward direction reflected by the reflection mirror 8 to pass therethrough. FIG. 2 is a longitudinal sectional view taken along the line XX shown for easy understanding of the configuration of the through holes 18 and 19.
[0024]
That is, the through-hole portion 18 provided in the vertical portion 12b of the revolver holding base 12 has a vertically long oval shape. The through-hole portion 19 provided in the fixing member 16 includes a U-shaped opening portion 19a that opens upward, and a bridge portion 19b that closes the open side of the U-shaped opening portion 19a.
[0025]
Note that a portion of the microscope body frame 1 corresponding to the upper side of the fixing member 16 is opened upward in consideration of the attachment of the fixing member 16 and the revolver holding base 12. That is, as shown in FIG. 2, the microscope main body frame 1 has a pair of triangular portions 1a and 1a sandwiching the fixing member connected by a beam member 1b (reinforcing portion) disposed below the fixing member 16. It has the shape which becomes. The portion of the microscope main body frame 1 that opens upward is covered with a thin cover 21 made of a plastic molded product or the like. Further, a waterproof cover 22 is fixed to the revolver holding base 12 as shown in FIG. The waterproof cover 22 is provided so as to cover the thin cover 21 and prevents water or the like from entering the microscope main body frame 1.
[0026]
On the other hand, an arm 23 is provided on the vertical portion 12 b of the revolver holding base 12, and this arm 23 extends to the observer side through the through hole portion 19 of the fixing member 16. A rack gear member 24 in which a rack gear 24 a extending in the vertical direction is extended to the end portion on the viewer side is fixed to the arm 23 by a bolt 25.
[0027]
In addition, a pinion gear 27 that meshes with the rack gear 24a is rotatably held on the microscope body frame 1. The pinion gear 27 is provided coaxially with the pinion gear 27 and is driven to rotate. A handle 28 is attached.
[0028]
Therefore, by rotating the handle 28, the revolver holding base 12 can be moved up and down via the pinion gear 27 and the rack gear 24a, thereby moving the objective lens 7 up and down and focusing the specimen 4. Can be done.
[0029]
The fixing member 16 is provided with restricting portions 30 a and 30 b that abut against the arm 23 of the revolver holding base 12 and restrict the amount of vertical movement of the revolver holding base 12. As can be seen from FIG. 2, the restricting portions 30 a and 30 b are constituted by concave portions provided so as to surround the arm 23.
[0030]
According to such a configuration, when the revolver holding base 12 moves in the vertical direction by rotating the handle 28 by the observer, the arm 23 comes into contact with the restricting portions 30a and 30b by a predetermined amount of movement. Movement is restricted.
[0031]
According to the configuration of this embodiment described above, the following effects can be obtained.
First, since the through hole 18 through which the observation optical path L extending obliquely upward is provided in the revolver holding base 12, the revolver holding base 12 can be extended to the observer side. As a result, the width dimension of the inverted microscope apparatus can be reduced. Further, since the operation handle 28 and the revolver holding base 12 can be brought close to each other, it is not necessary to connect them with a long arm member or the like.
[0032]
Further, since the handle 28 and the revolver holding base 12 are close to each other, the rack gear 24a can be made small and simple, and can be formed of an inexpensive member such as a punched product. Further, the restriction portions 30a and 30b are formed integrally with the fixing member, and the number of parts is small.
[0033]
Therefore, a compact and inexpensive configuration can be realized in an inverted microscope apparatus having an obliquely upward observation optical path.
Secondly, if the revolver holding base 12 and the fixing member 16 are provided with the through-hole portions 18 and 19, there is a concern about a decrease in rigidity. However, according to this embodiment, the fixing member 16 is provided with a bridge portion 19b that closes the open side of the U-shaped opening portion 19a, and the microscope body frame 1 includes a triangular portion 1a and a connecting beam member 1b. The beam structure (FIG. 2) is adopted and the rigidity is enhanced. Thereby, the first effect can be obtained while maintaining rigidity.
[0034]
Third, since the meshing point of the rack gear 24a and the pinion gear 27 and the restricting portions 30a and 30b of the fixing member 16 contacting the revolver holding base 12 can be brought close to each other, the revolver 11 is prevented from falling down. be able to.
[0035]
That is, when the handle 28 is rotationally driven, the arm 23 and the restricting portions 30a and 30b come into contact with each other by a predetermined amount of movement, and the movement of the revolver holding base 12 is restricted. If the handle 28 is further rotationally driven from this state, a rotational moment is generated with the contact point between the restricting portion 30a and the arm 23 as a fulcrum. This rotational moment acts in a direction to tilt the holding table 12 and the revolver 11. The magnitude of the rotational moment is proportional to the distance between the meshing point of the rack and pinion and the restricting portions 30a and 30b.
[0036]
According to the configuration of the present invention, since the revolver holding base 12 can be extended to a position close to the handle 28, the distance can be reduced, and therefore the revolver 11 is effectively prevented from falling. can do.
[0037]
Fourthly, there is an effect that the space 14 for operating the revolver 11 can be widened. That is, in the configuration of this embodiment, the cover 21 that covers the open portion of the microscope main body frame 1 is made of a member that is thinner than the microscope main body frame 1. As a result, the space 14 for operating the revolver 11 can be widened. On the other hand, since the necessary rigidity is ensured by the bridge 19b and the beam member 1b, there is no problem in strength.
[0038]
In addition, this invention is not limited to the said one Embodiment, A various deformation | transformation is possible in the range which does not change the summary of invention.
For example, in the above-described embodiment, the pinion gear 27 and the rack gear 24a are directly meshed with each other. However, a reduction gear may be interposed between the pinion gear 27 and the rack gear 24a.
[0039]
Further, the microscope main body frame 1 may be molded so as to be partially thin, and if there is no problem in assembling workability, the microscope main body frame 1 and the cover 21 may be integrated. Further, according to FIG. 1, the cover 21 has an integral structure from a position above the fixing member 16 to a position where the cover 21 is assembled with the lens barrel 9, but may be a separate part in consideration of assembly workability. . In addition, the detailed shape of each component is not limited to that shown in the drawings.
[0040]
【The invention's effect】
According to the present invention, it is possible to provide an inverted microscope that is compact and has high rigidity and good operability for an observer.
[Brief description of the drawings]
FIG. 1 is a central longitudinal sectional view showing an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view taken along line XX in FIG.
[Explanation of symbols]
1 ... Microscope body frame 1b ... Beam member (reinforcing part)
2 ... Observation optical system 3 ... Stage 4 ... Observation specimen 5 ... Eyepiece 7 ... Objective lens 8 ... Reflecting mirror 11 ... Revolver 12 ... Revolver holding base (revolver holding member)
12a ... Horizontal part 12b ... Vertical part 14 ... Space part 15 ... Linear guide 16 ... Fixing member 17 ... Optical path dividing unit 18 ... Through hole part 19b ... Bridge part 19a ... U-shaped opening part 21 ... Cover 22 ... Waterproof cover 24a ... Rack gear (Drive mechanism)
24 ... Rack gear member 27 ... Pinion gear (drive mechanism)
28 ... Handle 30a ... Restricting part L ... Observation optical path

Claims

In an inverted microscope device that reflects the observation light that has passed through the objective lens obliquely upward by the reflection mirror and guides it to the observer side,
An observation optical system;
A microscope body frame having an internal space for accommodating a part of the observation optical system;
A revolver holding the objective lens;
The revolver is held on one end side, the other end side is extended to the observer side, and a first through-hole portion is provided on the other end side to pass the obliquely upward observation optical path reflected by the reflecting mirror. A revolver holding member,
Connecting both side walls of the microscope main body frame forming the inner space, and holding the revolver holding member fixed to the microscope main body frame so as to cross the inner space on the observer side than the revolver holding member And a fixing member provided with a second through-hole portion through which the obliquely upward observation optical path passes.
A guide mechanism that is provided between the revolver holding member and the fixing member and moves the revolver holding member along the optical axis direction of the objective lens;
Wherein provided on the observer side than the fixing member, and a drive mechanism for driving the revolver holding member in the vertical direction,
This is attached to the drive mechanism, it has a handle for operating the drive mechanism,
The inverted microscope apparatus, wherein the second through-hole portion includes a U-shaped opening portion that opens above the fixing member and a bridge portion that is formed so as to close the opening portion. .

The revolver holding member has a horizontal portion that holds the revolver, and a vertical portion that extends downward from an end portion on the viewer side of the horizontal portion and is inserted into the internal space of the microscope body frame. 2. The inverted microscope apparatus according to claim 1, wherein the fixing member holds the vertical portion in the internal space of the microscope main body frame.

The revolver holding member has an extending portion that extends through the second through hole portion and extends toward the observer side, and the driving unit is connected to the extending portion to move the revolver holding member up and down. 2. The inverted microscope apparatus according to claim 1, wherein the inverted microscope apparatus is driven to move.

The inverted microscope apparatus according to claim 1, wherein the second through hole portion includes a restricting portion that contacts the extending portion and restricts movement of the revolver holding member.

The inverted microscope apparatus according to claim 1, further comprising a reinforcing member disposed below the fixing member so as to connect both side walls of the microscope main body frame on a bottom surface of the microscope main body frame.

The inverted microscope apparatus according to claim 1, wherein the fixing member is provided between the driving mechanism and the revolver holding member.

In an inverted microscope device that reflects the observation light that has passed through the objective lens obliquely upward by the reflection mirror and guides it to the observer side,
A microscope body frame having an internal space;
An observation optical system held in the internal space of the microscope body frame;
A revolver holding the objective lens;
The revolver is held on one end side, the other end side is extended to the observer side, and a first through-hole portion is provided on the other end side to pass the obliquely upward observation optical path reflected by the reflecting mirror. A revolver holding member,
Connecting both side walls of the microscope main body frame forming the inner space, and holding the revolver holding member fixed to the microscope main body frame so as to cross the inner space on the observer side than the revolver holding member And a fixing member provided with a second through-hole portion through which the obliquely upward observation optical path passes.
A guide mechanism that is provided between the revolver holding member and the fixing member and moves the revolver holding member along the optical axis direction of the objective lens;
An extending portion extending from the revolver holding member so as to be inserted through the second through hole portion;
A driving mechanism that is provided closer to the observer than the fixing member and is connected to the extending portion that is inserted through the second through-hole portion to drive the revolver holding member in the vertical direction;
A handle attached to and actuating the drive mechanism;
I have a,
The inverted microscope apparatus, wherein the second through-hole portion includes a U-shaped opening portion that opens above the fixing member and a bridge portion that is formed so as to close the opening portion. .

In an inverted microscope device that reflects the observation light that has passed through the objective lens obliquely upward by the reflection mirror and guides it to the observer side,
A microscope body frame having an internal space;
An observation optical system held in the internal space of the microscope body frame;
A revolver holding the objective lens;
The revolver is held on one end side, the other end side is extended to the observer side, and a first through-hole portion is provided on the other end side to pass the obliquely upward observation optical path reflected by the reflecting mirror. A revolver holding member,
Connecting both side walls of the microscope main body frame forming the inner space, and holding the revolver holding member fixed to the microscope main body frame so as to cross the inner space on the observer side than the revolver holding member And a fixing member provided with a second through-hole portion through which the obliquely upward observation optical path passes.
A guide mechanism that is provided between the revolver holding member and the fixing member and moves the revolver holding member along the optical axis direction of the objective lens;
Wherein provided on the observer side than the fixing member, and a drive mechanism for driving the revolver holding member in the vertical direction,
A handle attached to and actuating the drive mechanism;
An opening that allows the revolver holding member and the fixing member to be inserted into and removed from the microscope main body frame;
Possess a covering member thin attached to the microscope body frame so as to cover the opening,
The inverted microscope apparatus, wherein the second through-hole portion includes a U-shaped opening portion that opens above the fixing member and a bridge portion that is formed so as to close the opening portion. .