JP2007309976A - Device for variable magnification and microscope equipped with the same - Google Patents

Device for variable magnification and microscope equipped with the same Download PDF

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JP2007309976A
JP2007309976A JP2006136252A JP2006136252A JP2007309976A JP 2007309976 A JP2007309976 A JP 2007309976A JP 2006136252 A JP2006136252 A JP 2006136252A JP 2006136252 A JP2006136252 A JP 2006136252A JP 2007309976 A JP2007309976 A JP 2007309976A
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aperture
zoom
optical system
cam shaft
transmission member
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Nobuhiro Shinada
伸宏 品田
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Nikon Corp
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Nikon Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for variable magnification in which diameters of the openings corresponding to magnification can be obtained, and to provide a microscope equipped with the same. <P>SOLUTION: In a cam shaft 65 connected to a zoom knob 61, there is fixed a spur gear 51 constituting a part of a second diaphragm diameter varying mechanism 50. Cam grooves 66, 67 formed on the outer circumferential surface of the cam shaft 65 are engaged with the follower joints 22a, 22b of movable frames 22, 23. A first diaphragm diameter varying mechanism is meshed with the spur gear projecting outward. When the zoom knob 61 is operated by a viewer, the second and third lens frames 22, 23 are moved and the magnification of the microscope is varied, and the diameter of the opening of the aperture diaphragm 31 is varied. When the spur gear is rotated by the viewer, the diameter of the opening of the aperture diaphragm 30 is varied. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は変倍装置及び変倍装置を備える顕微鏡に関する。   The present invention relates to a zoom device and a microscope including the zoom device.

従来、４つのレンズ群からなるズーム変倍光学系と開口絞りとを備えている顕微鏡は知られている（下記特許文献参照）。   2. Description of the Related Art Conventionally, a microscope including a zoom variable magnification optical system composed of four lens groups and an aperture stop is known (see the following patent document).

ズーミングに伴って瞳位置が移動する場合、この瞳位置の移動に伴って発生する収差を補正するため、対物レンズの構造が複雑になることがある。そこで、下記特許文献の顕微鏡では対物レンズとズーム変倍光学系との間に、固定された物体側の瞳位置が存在するように顕微鏡の光学系を設計し、この瞳位置に開口絞りを配置していた。
特開２００４−１８４８２５号公報 When the pupil position is moved with zooming, the structure of the objective lens may be complicated in order to correct the aberration that occurs with the movement of the pupil position. Therefore, in the microscope of the following patent document, the microscope optical system is designed so that a fixed object-side pupil position exists between the objective lens and the zoom variable power optical system, and an aperture stop is arranged at this pupil position. Was.
JP 2004-184825 A

しかし、上述の顕微鏡にはズーム倍率に応じた開口径を得ることができないという問題がある。   However, the above-described microscope has a problem that an aperture diameter corresponding to the zoom magnification cannot be obtained.

この発明はこのような事情に鑑みてなされたもので、その課題は倍率に応じた開口径を得ることができる変倍装置及び変倍装置を備える顕微鏡を提供することである。   The present invention has been made in view of such circumstances, and an object thereof is to provide a zoom device that can obtain an aperture diameter corresponding to a magnification and a microscope including the zoom device.

上記課題を解決するため請求項１記載の発明は、操作力を伝達する共通伝達部材と、変倍光学系を構成する複数の光学素子と、前記共通伝達部材の動作に連動して、前記変倍光学系を構成する複数の光学素子のうちの少なくとも一部の光学素子を光軸方向へ移動させて倍率を変える光学素子移動機構と、前記変倍光学系の光軸上に配置される２つの開口絞りと、前記２つの開口絞りのうちの一方の開口絞りの開口径を変える第１の絞り径変更機構と、前記共通伝達部材の動作に連動して前記２つの開口絞りのうちの他方の開口絞りの開口径を変える第２の絞り径変更機構とを備えていることを特徴とする。   In order to solve the above problems, the invention according to claim 1 is characterized in that the common transmission member for transmitting the operating force, a plurality of optical elements constituting the variable magnification optical system, and the variable transmission system in conjunction with the operation of the common transmission member. An optical element moving mechanism for changing the magnification by moving at least a part of the plurality of optical elements constituting the magnification optical system in the optical axis direction, and 2 arranged on the optical axis of the magnification optical system One aperture stop, a first aperture diameter changing mechanism that changes the aperture diameter of one of the two aperture stops, and the other of the two aperture stops in conjunction with the operation of the common transmission member And a second aperture diameter changing mechanism for changing the aperture diameter of the aperture stop.

この発明によれば倍率に応じた開口径を得ることができる。   According to the present invention, an opening diameter corresponding to the magnification can be obtained.

以下、この発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１はこの発明の一実施形態に係る顕微鏡の側面図である。   FIG. 1 is a side view of a microscope according to an embodiment of the present invention.

顕微鏡ＭＳは、ベース５と、ベース５の一端部に取り付けられた支柱５Ａと、上下動機構６を介して支柱５Ａに取り付けられ、支柱５Ａに沿って上下動する顕微鏡本体１とを備えている。   The microscope MS includes a base 5, a support column 5A attached to one end of the base 5, and a microscope body 1 attached to the support column 5A via a vertical movement mechanism 6 and moving up and down along the support column 5A. .

ベース５上には試料８が載せられる。   A sample 8 is placed on the base 5.

上下動機構６に設けられた焦準ノブ７を回転させると顕微鏡本体１が光軸方向へ移動する。顕微鏡本体１は、ズーム変倍部（変倍装置）３と、ズーム変倍部３の上部に取り付けられた接眼レンズ４ａを有する接眼レンズ鏡筒４と、ズーム変倍部３の下部に取り付けられた対物レンズ部２とを備えている。   When the focusing knob 7 provided on the vertical movement mechanism 6 is rotated, the microscope main body 1 moves in the optical axis direction. The microscope main body 1 is attached to a zoom magnification unit (magnification device) 3, an eyepiece lens barrel 4 having an eyepiece 4 a attached to the upper part of the zoom magnification unit 3, and a lower part of the zoom magnification unit 3. Objective lens unit 2.

ベース５に載せられた試料８からの光束９が対物レンズ部２、ズーム変倍部３、接眼レンズ鏡筒４を介して接眼レンズ４ａに導かれ、試料８の像が観察される。焦準ノブ７を回転させることによってピントを調整することができる。   A light beam 9 from the sample 8 placed on the base 5 is guided to the eyepiece lens 4a through the objective lens unit 2, the zoom magnification unit 3, and the eyepiece lens barrel 4, and an image of the sample 8 is observed. The focus can be adjusted by rotating the focusing knob 7.

図２は図１のII−II線に沿う断面図、図３は図２のIII−III線に沿う断面図、図４は図３のIV−IV線に沿う断面図である。   2 is a sectional view taken along line II-II in FIG. 1, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

ズーム変倍部３は変倍光学系１０とレンズ移動機構（光学素子移動機構）２０と開口絞り３０，３１と絞り径変更機構４０，５０と共通動作機構６０と筐体７０Ａ，７０Ｂとを備える。   The zoom magnifying unit 3 includes a magnifying optical system 10, a lens moving mechanism (optical element moving mechanism) 20, aperture stops 30, 31, aperture diameter changing mechanisms 40, 50, a common operation mechanism 60, and housings 70A, 70B. .

変倍光学系１０は光学素子である第１レンズ群１１、第２レンズ群１２、第３レンズ群１３及び第４レンズ群１４で構成される。第１レンズ群１１及び第４レンズ群１４はそれぞれ上側筐体７０Ａの下端部及び上端部に支持されている。第２レンズ群１２は第２レンズ群枠２２に支持され、第３レンズ群１３は第３レンズ群枠２３に支持されている。ガイド棒２１ａ，２１ｂ，２１ｃは変倍光学系１０の光軸と平行に配置されている。第２レンズ群枠２２及び第３レンズ群枠２３はガイド棒２１ａ，２１ｂ，２１ｃに沿って移動可能である。ガイド棒２１ａ，２１ｂ，２１ｃと第２レンズ群枠２２と第３レンズ群枠２３とでレンズ移動機構２０が構成される。なお、第２レンズ群枠２２及び第３レンズ群枠２３はそれぞれ後述するカム溝６６，６７と係合する従動節２２ａ，２２ｂを有する。   The variable magnification optical system 10 includes a first lens group 11, a second lens group 12, a third lens group 13, and a fourth lens group 14, which are optical elements. The first lens group 11 and the fourth lens group 14 are supported by the lower end and the upper end of the upper housing 70A, respectively. The second lens group 12 is supported by the second lens group frame 22, and the third lens group 13 is supported by the third lens group frame 23. The guide rods 21a, 21b, and 21c are arranged in parallel with the optical axis of the variable magnification optical system 10. The second lens group frame 22 and the third lens group frame 23 are movable along the guide rods 21a, 21b, and 21c. The guide rods 21a, 21b, 21c, the second lens group frame 22, and the third lens group frame 23 constitute a lens moving mechanism 20. The second lens group frame 22 and the third lens group frame 23 have driven nodes 22a and 22b that engage with cam grooves 66 and 67, which will be described later, respectively.

共通動作機構６０はズームノブ６１とズームノブ軸６２と第１かさ歯車６３と第２かさ歯車６４とカム軸（共通伝達部材）６５とを備えている。ズームノブ６１は倍率を変えるためのノブである。ズームノブ６１は上側筐体７０Ａを貫通しかつ上側筐体７０Ａに回転可能に支持されたズームノブ軸６２の両端部に固定され、操作者の手で操作される。ズームノブ軸６２のほぼ中間部には第１かさ歯車６３が固定され、第１かさ歯車６３はカム軸６５の一端に固定された第２かさ歯車６４と噛合する。カム軸６５は、変倍光学系１０の光軸に平行に延び、かつ変倍光学系１０の光軸と平行な仮想回転軸周りへ回転可能である。カム軸６５の他端部は上側筐体７０Ａの底面部に回転可能に支持されている。カム軸６５の他端部には絞り径変更機構５０の一部を構成する平歯車５１が固定されている。平歯車５１は、中央部と開口部とを有するリング状をなし、開口部にカム軸６５の一端が貫通した状態で設置されている。カム軸６５の外周面に形成されたカム溝６６，６７には従動節２２ａ，２２ｂが係合している。
開口絞り３０，３１は、下側筐体７０Ｂ内であって、対物レンズ２の後側焦点面の位置（瞳位置）の近傍に配置されている。 The common operation mechanism 60 includes a zoom knob 61, a zoom knob shaft 62, a first bevel gear 63, a second bevel gear 64, and a cam shaft (common transmission member) 65. The zoom knob 61 is a knob for changing the magnification. The zoom knob 61 is fixed to both ends of the zoom knob shaft 62 that passes through the upper housing 70A and is rotatably supported by the upper housing 70A, and is operated by an operator's hand. A first bevel gear 63 is fixed to a substantially middle portion of the zoom knob shaft 62, and the first bevel gear 63 meshes with a second bevel gear 64 fixed to one end of the cam shaft 65. The cam shaft 65 extends parallel to the optical axis of the variable magnification optical system 10 and can rotate around a virtual rotation axis parallel to the optical axis of the variable magnification optical system 10. The other end of the cam shaft 65 is rotatably supported on the bottom surface of the upper housing 70A. A spur gear 51 constituting a part of the aperture diameter changing mechanism 50 is fixed to the other end portion of the cam shaft 65. The spur gear 51 has a ring shape having a central portion and an opening, and is installed in a state where one end of the cam shaft 65 penetrates the opening. The follower nodes 22 a and 22 b are engaged with cam grooves 66 and 67 formed on the outer peripheral surface of the cam shaft 65.
The aperture stops 30 and 31 are disposed in the lower casing 70B in the vicinity of the position (pupil position) of the rear focal plane of the objective lens 2.

次に、図３〜５を用いて絞り径変更機構４０，５０を説明する。   Next, the aperture diameter changing mechanisms 40 and 50 will be described with reference to FIGS.

図５は開口絞り及び絞り径変更機構の分解斜視図である。   FIG. 5 is an exploded perspective view of the aperture stop and the aperture diameter changing mechanism.

第１の絞り径変更機構４０は回転部材４２と固定部材４６とから構成されている。   The first aperture diameter changing mechanism 40 includes a rotating member 42 and a fixed member 46.

回転部材４２は下側筐体７０Ｂの中央部に形成された凹部に回転可能に装着されている。回転部材４２は環状部４３と歯部４４とを有する。歯部４４は平歯車４１に噛合する。   The rotating member 42 is rotatably mounted in a recess formed in the central portion of the lower housing 70B. The rotating member 42 has an annular portion 43 and a tooth portion 44. The tooth portion 44 meshes with the spur gear 41.

平歯車４１は下側筐体７０Ｂに回転可能に支持されている。平歯車４１が回転したとき、回転部材４２は変倍光学系１０の光軸を中心として回転する。平歯車４１の一部は観察者が手で操作することができるように下側筐体７０Ｂから突き出ている（図４参照）。   The spur gear 41 is rotatably supported by the lower housing 70B. When the spur gear 41 rotates, the rotating member 42 rotates about the optical axis of the variable magnification optical system 10. A part of the spur gear 41 protrudes from the lower housing 70B so that the observer can operate it by hand (see FIG. 4).

環状部４３にはその中心から放射状に延びる複数（絞り羽根３２と同数）の長孔４５が周方向へ等間隔に形成されている。長孔４５には絞り羽根３２の裏側ピン３４が嵌まり込む。   A plurality of (as many as the diaphragm blades 32) elongated holes 45 extending radially from the center of the annular portion 43 are formed at equal intervals in the circumferential direction. The back side pin 34 of the aperture blade 32 is fitted into the long hole 45.

固定部材４６は第１環状部４７ａと第２環状部４７ｂとを有する。第２環状部４７ｂの外周縁部の一部分は切り欠いてある。固定部材４６は開口絞り３０を介して回転部材４２に重ねられ、ねじ（図示せず）によって下側筐体７０Ｂに固定されている。また、固定部材４６の第１環状部４７ａには周方向へ等間隔に絞り羽根３２と同数のピン孔４８が形成されている。ピン孔４８には絞り羽根３２の表側ピン３３が嵌まり込んでいる。   The fixing member 46 has a first annular portion 47a and a second annular portion 47b. A part of the outer peripheral edge portion of the second annular portion 47b is notched. The fixing member 46 is overlaid on the rotating member 42 through the aperture stop 30 and is fixed to the lower housing 70B by screws (not shown). Further, the same number of pin holes 48 as the diaphragm blades 32 are formed in the first annular portion 47a of the fixing member 46 at equal intervals in the circumferential direction. The front side pin 33 of the aperture blade 32 is fitted in the pin hole 48.

第２の絞り径変更機構５０は平歯車（回転伝達部材）５１と回転部材５２と固定部材４６とから構成されている。   The second aperture diameter changing mechanism 50 includes a spur gear (rotation transmission member) 51, a rotation member 52, and a fixed member 46.

平歯車５１は上側筐体７０Ａの底面から突き出たカム軸６５の他端部に固定されている。   The spur gear 51 is fixed to the other end of the cam shaft 65 protruding from the bottom surface of the upper housing 70A.

回転部材５２は環状部５３ａと平歯車部５３ｂとを有する。平歯車部５３ｂは平歯車５１に噛合する。環状部５３ａにはその中心から放射状に延びる複数（絞り羽根３５と同数）の長孔５５が周方向へ等間隔に形成されている。長孔５５には絞り羽根３５の表側ピン３６が嵌まり込む。なお、絞り羽根３５の裏側ピン３７は固定部材４６のピン孔４８に嵌まり込む。   The rotating member 52 has an annular portion 53a and a spur gear portion 53b. The spur gear portion 53 b meshes with the spur gear 51. In the annular portion 53a, a plurality (the same number as the aperture blades 35) of elongated holes 55 extending radially from the center are formed at equal intervals in the circumferential direction. The front pin 36 of the aperture blade 35 is fitted in the long hole 55. The back side pin 37 of the aperture blade 35 is fitted into the pin hole 48 of the fixing member 46.

次に、ズーム変倍部３の動作を説明する。   Next, the operation of the zoom scaling unit 3 will be described.

観察者が平歯車４１を回転させると、回転部材４２が回転する。このとき、固定部材４６のピン孔４８に嵌まり込んでいる絞り羽根３２の表側ピン３３は移動しない。これに対し、回転部材４２の長孔４５に嵌まり込んでいる絞り羽根３２の裏側ピン３４は光軸を中心として放射方向へ移動する。その動きにつれて、各絞り羽根３２は表側ピン３３を中心として回転し、全部の絞り羽根３２で形成される開口絞り３０の開口径が変化する。   When the observer rotates the spur gear 41, the rotating member 42 rotates. At this time, the front side pin 33 of the diaphragm blade 32 fitted in the pin hole 48 of the fixing member 46 does not move. On the other hand, the back side pin 34 of the diaphragm blade 32 fitted in the long hole 45 of the rotating member 42 moves in the radial direction around the optical axis. With this movement, each diaphragm blade 32 rotates about the front side pin 33, and the aperture diameter of the aperture diaphragm 30 formed by all the diaphragm blades 32 changes.

観察者がズームノブ６１を回転させると、ズームノブ軸６２、第１かさ歯車６３、第２かさ歯車６４、カム軸６５が回転する。このとき、従動節２２ａ，２２ｂがカム軸６５のカム溝６６，６７内を相対移動し、第２レンズ群枠２２及び第３レンズ群枠２３がガイド棒２１ａ，２１ｂ，２１ｃに沿って移動する。その結果、顕微鏡の倍率が変わる。   When the observer rotates the zoom knob 61, the zoom knob shaft 62, the first bevel gear 63, the second bevel gear 64, and the cam shaft 65 rotate. At this time, the follower nodes 22a and 22b relatively move in the cam grooves 66 and 67 of the cam shaft 65, and the second lens group frame 22 and the third lens group frame 23 move along the guide rods 21a, 21b and 21c. . As a result, the magnification of the microscope changes.

また、カム軸６５の回転によって第２の絞り径変更機構５０が動作し、平歯車５１と噛合する回転部材５２の平歯車部５３ｂが回転する。このとき、固定部材４６のピン孔４８に嵌まり込んでいる絞り羽根３５の裏側ピン３７は移動しない。これに対し、回転部材５２の環状部５３ａの長孔５５に嵌まり込んでいる絞り羽根３５の表側ピン３６は光軸を中心として放射方向へ移動する。その動きにつれて、各絞り羽根３５は裏側ピン３７を中心としてそれぞれ回転し、全部の絞り羽根３５で形成される開口絞り３１の開口径が変化する。   Further, the rotation of the cam shaft 65 causes the second aperture diameter changing mechanism 50 to operate, and the spur gear portion 53b of the rotating member 52 that meshes with the spur gear 51 rotates. At this time, the back side pin 37 of the diaphragm blade 35 fitted in the pin hole 48 of the fixing member 46 does not move. On the other hand, the front side pin 36 of the diaphragm blade 35 fitted in the long hole 55 of the annular portion 53a of the rotating member 52 moves in the radial direction around the optical axis. Along with the movement, each diaphragm blade 35 rotates around the back side pin 37, and the aperture diameter of the aperture diaphragm 31 formed by all the diaphragm blades 35 changes.

すなわち、ズームノブ６１を回転させたとき、顕微鏡の倍率が変わるとともに、開口絞り３１の開口径が変わる。   That is, when the zoom knob 61 is rotated, the magnification of the microscope is changed and the aperture diameter of the aperture stop 31 is changed.

この実施形態によれば、ズームノブ６１を操作して移動機構２０、第２の絞り変更機構５０を動作させることができるとともに、平歯車４１を操作して第１の絞り変更機構４０を動作させることができるので、倍率に応じた開口径を得ることができる。しかも、共通伝達部材であるカム軸６５の回転によってレンズ移動機構２０及び第２の絞り変更機構５０を動作させるので、レンズ移動機構２０と第２の絞り変更機構５０とを個別に動作させる場合より簡単な構造で上記効果を得ることができる。   According to this embodiment, the zoom knob 61 can be operated to operate the moving mechanism 20 and the second aperture changing mechanism 50, and the spur gear 41 can be operated to operate the first aperture changing mechanism 40. Therefore, an opening diameter corresponding to the magnification can be obtained. In addition, since the lens moving mechanism 20 and the second aperture changing mechanism 50 are operated by the rotation of the cam shaft 65 that is a common transmission member, the lens moving mechanism 20 and the second aperture changing mechanism 50 are operated separately. The above effects can be obtained with a simple structure.

なお、上記実施形態では、変倍光学系としてズーム変倍光学系１０を用いたが、これに代えて例えばスライダ、ターレットに倍率の異なる複数の変倍レンズを取り付け、各変倍レンズを観察光路上に選択的に配置するようにしてもよい。   In the above embodiment, the zoom variable magnification optical system 10 is used as the variable magnification optical system. Instead, for example, a plurality of variable magnification lenses having different magnifications are attached to a slider and a turret, and each variable magnification lens is attached to the observation light. It may be arranged selectively on the road.

図１はこの発明の一実施形態に係る顕微鏡の側面図である。FIG. 1 is a side view of a microscope according to an embodiment of the present invention. 図２は図１のII−II線に沿う断面図である。FIG. 2 is a sectional view taken along line II-II in FIG. 図３は図２のIII−III線に沿う断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 図４は図３のIV−IV線に沿う断面図である。4 is a cross-sectional view taken along line IV-IV in FIG. 図５は開口絞り及び絞り径変更機構の分解斜視図である。FIG. 5 is an exploded perspective view of the aperture stop and the aperture diameter changing mechanism.

符号の説明Explanation of symbols

２：対物レンズ、３：ズーム変倍部（ズーム変倍装置）、１０：変倍光学系、１１：第１レンズ群、１２：第２レンズ群、１３：第３レンズ群、１４：第４レンズ群、２０：レンズ移動機構（光学素子移動機構）、２２ａ，２２ｂ：従動節、３０，３１：開口絞り、４０：第１の絞り径変更機構、４２，５２：回転部材、５０：第２の絞り径変更機構、５１：平歯車（回転伝達部材）、６５：カム軸（共通伝達部材）、６６，６７：カム溝。   2: objective lens, 3: zoom zoom unit (zoom zoom device), 10: zoom optical system, 11: first lens group, 12: second lens group, 13: third lens group, 14: fourth Lens group, 20: lens moving mechanism (optical element moving mechanism), 22a, 22b: driven node, 30, 31: aperture stop, 40: first aperture diameter changing mechanism, 42, 52: rotating member, 50: second Aperture diameter changing mechanism, 51: spur gear (rotation transmission member), 65: cam shaft (common transmission member), 66, 67: cam groove.

Claims (4)

操作力を伝達する共通伝達部材と、
変倍光学系を構成する複数の光学素子と、
前記共通伝達部材の動作に連動して、前記変倍光学系を構成する複数の光学素子のうちの少なくとも一部の光学素子を光軸方向へ移動させて倍率を変える光学素子移動機構と、
前記変倍光学系の光軸上に配置される２つの開口絞りと、
前記２つの開口絞りのうちの一方の開口絞りの開口径を変える第１の絞り径変更機構と、
前記共通伝達部材の動作に連動して前記２つの開口絞りのうちの他方の開口絞りの開口径を変える第２の絞り径変更機構と
を備えていることを特徴とする変倍装置。 A common transmission member for transmitting operating force;
A plurality of optical elements constituting a variable magnification optical system;
In conjunction with the operation of the common transmission member, an optical element moving mechanism that changes the magnification by moving at least a part of the plurality of optical elements constituting the zoom optical system in the optical axis direction;
Two aperture stops arranged on the optical axis of the zoom optical system;
A first aperture diameter changing mechanism for changing an aperture diameter of one of the two aperture stops;
A zooming device comprising: a second aperture diameter changing mechanism that changes an aperture diameter of the other aperture aperture of the two aperture apertures in conjunction with the operation of the common transmission member. 前記変倍光学系と観察対象との間に対物レンズが配置され、
前記２つの開口絞りは前記変倍光学系に対して前記対物レンズ側に配置されている
ことを特徴とする請求項１記載の変倍装置。 An objective lens is disposed between the zoom optical system and the observation target,
The zooming apparatus according to claim 1, wherein the two aperture stops are arranged on the objective lens side with respect to the zooming optical system. 前記共通伝達部材は、前記変倍光学系の光軸と平行な方向へ延び、かつ前記光軸と平行な軸回りへ回転するカム軸であり、
前記第２の絞り径変更機構は、前記カム軸の軸回転により前記光軸回りへ回転して前記他方の開口絞りの開口径を変える回転部材と、前記カム軸の回転を前記回転部材に伝える回転伝達部材とを有し、
前記光学素子移動機構は前記光学素子を保持する可動枠を有し、
前記カム軸には、前記可動枠と係合するカム溝が形成されているとともに、前記回転伝達部材が設けられている
ことを特徴とする請求項１又は２記載の変倍装置。 The common transmission member is a cam shaft that extends in a direction parallel to the optical axis of the zoom optical system and rotates about an axis parallel to the optical axis,
The second aperture diameter changing mechanism is configured to transmit a rotation member that rotates around the optical axis by changing the axis of the cam shaft and changes the aperture diameter of the other aperture stop, and the rotation of the cam shaft to the rotation member. A rotation transmission member,
The optical element moving mechanism has a movable frame that holds the optical element;
The zooming device according to claim 1 or 2, wherein the cam shaft is formed with a cam groove that engages with the movable frame and the rotation transmission member. 請求項１〜３のいずれか１項記載の変倍装置を備えていることを特徴とする顕微鏡。   A microscope comprising the zooming device according to any one of claims 1 to 3.
JP2006136252A 2006-05-16 2006-05-16 Device for variable magnification and microscope equipped with the same Pending JP2007309976A (en)

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Publication number Priority date Publication date Assignee Title
JP2013518293A (en) * 2010-01-24 2013-05-20 ライカ カメラ アクチエンゲゼルシャフト Device for synchronizing the pivoting movements of a plurality of shutter blades
WO2012034723A1 (en) 2010-09-17 2012-03-22 Carl Zeiss Microimaging Gmbh Wide range zoom system
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DE102010045860B4 (en) 2010-09-17 2019-05-09 Carl Zeiss Microscopy Gmbh Zoom system of high spread
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DE102013201632B4 (en) * 2013-01-31 2020-10-08 Leica Microsystems (Schweiz) Ag Microscope with zoom aperture coupling and zoom system for a microscope
CN105005134A (en) * 2014-04-25 2015-10-28 苏州速迈医疗设备有限公司 Zoom object lens of operation microscope
JP2017530416A (en) * 2014-10-06 2017-10-12 ライカ マイクロシステムズ （シュヴァイツ） アクチエンゲゼルシャフトＬｅｉｃａ Ｍｉｃｒｏｓｙｓｔｅｍｓ （Ｓｃｈｗｅｉｚ） ＡＧ Microscope with iris diaphragm adapted automatically
US10234671B2 (en) 2014-10-06 2019-03-19 Leica Microsystems (Schweiz) Ag Microscope with self-adapting iris diaphragm
CN108873277A (en) * 2018-08-17 2018-11-23 福建福光股份有限公司 A kind of big zoom ratio high definition zoom lens of compact wide-angle
CN108873277B (en) * 2018-08-17 2021-06-01 福建福光股份有限公司 Compact wide-angle high-zoom-ratio high-definition zoom lens

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