JP2003029121A - Device with inserting and removing microscope optical system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device with inserting and removing microscope optical system, which has a focusing mechanism of at least one optical system and can be disposed internally with many optical systems. SOLUTION: This device consists of a fixed focus optical system which has a fixed focus lens, a focusing optical system which holds a focus-adjusting lens, is movable in the optical axis direction and is installed nonrotatably at an axial center, a holding member which holds the fixed focus optical system and the focusing optical system and focusing-adjusting means which is disposed at this holding member, adjusts the focusing of the focusing optical system and has a manual turning member turning around the axis parallel to the optical axis of the focusing optical system and a conversion member for converting this turning into rectilinear motion of the focusing optical system. The holding member is formed, to make the fixed focus optical system and the focusing optical system selectively insertable into the optical path of a microscope.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microscope optical system inserting / removing device for inserting / removing an optical system having a focusing mechanism into / from an optical path of a microscope.

[0002]

2. Description of the Related Art Conventionally, there has been used a microscope equipped with a microscope optical system inserting / removing device capable of inserting / removing an optical system having a focusing mechanism into / from an optical path. The structure of the microscope equipped with this microscope optical system insertion / removal device is shown in FIGS.
Is shown in. The light from the main body 101 of the inverted microscope passes through the imaging lens 105, the prism 107, and the turret unit 109 in the lens barrel 103, and is split into the left and right optical paths by the binocular prism unit 111. The image is observed through the eyepiece 113. The turret portion 109 is mainly a cylindrical rotating member 11
The rotating member 115 includes a lens barrel portion 10
To the binocular mounting member 119 fixed to the housing 117 of No. 3,
It is rotatably attached by a shaft 121. Around the axis 121 of the rotating member 115, two optical systems 123,
125 is provided. The observer can insert a desired optical system into the optical path of the microscope by rotating the rotating member 115. At this time, the ball 127 attached to the rotating member 115 is fitted into the hole or slit (not shown) of the click leaf spring 129, so that the turret portion 109 is positioned at the insertion position of each optical system 123, 125.

FIG. 6 shows a state in which the Bertrand lenses 131 and 133, which are desired optical systems 123, are inserted in the optical path. Bertrand lens 131 is rotating member 1
It is held in a cylindrical fixed lens chamber 135 attached to 15. The Bertrand lens 133, which needs to be moved for focusing, has a cylindrical moving lens chamber 137.
The movable lens chamber 137 is fitted in the fixed lens chamber 135 so as to be slidable in the optical axis direction. A pin 139 is fixed to the outer peripheral surface of the movable lens chamber 137 so as to project in the radial direction. The pin 139 is a long hole 135a provided on the side surface of the fixed lens chamber 135 in the optical axis direction.
Through and penetrates through the fixed lens chamber 135.
Therefore, the movable lens chamber 137 does not rotate around the optical axis when moving in the optical axis direction, and the pin 139 is inserted into the long hole 135.
It is movable only in the optical axis direction by being guided by a.

As shown also in FIG. 7, a focus knob 141 is rotatably attached to a flat surface portion 115a provided on a side surface portion of the rotating member 115, and a pin driving member 143 is fixed to the focus knob 141. Has been done. A slit 143a is provided at the rear end of the pin driving member 143, and the tip of the pin 139 is engaged with the slit 143a.

When focusing the Bertrand lenses 131 and 133, the focus knob 141 is manually turned to adjust the position of the Bertrand lenses 133. When the focus knob 141 is rotated, the pin driving member 143 rotates, and the pin 139 engaged with the slit 143a moves in the optical axis direction in conjunction with the movement thereof, and the belt run lens 133 in the moving lens chamber 137 moves in the optical axis direction. Move to. This operation enables focusing.

[0006]

However, the conventional microscope optical system insertion / removal device described above is provided with the pin driving member 143 which rotates integrally with the focus knob 141, which is the turret 109 (rotation member 115).
Turret 10 because it occupies most of the interior space
There is a problem that the number of optical systems that can be built into the 9 is reduced.

An object of the present invention is to provide a microscope optical system insertion / removal device having a simple structure in which many optical systems can be arranged.

[0008]

In order to achieve the above object, the present invention holds a fixed focus optical system having a fixed focus lens and a focus adjusting lens by a moving lens holding member,
A focusing optical system that is movable in the optical axis direction and is not rotatable about the axis, a holding member that holds the fixed-focus optical system and the focusing optical system, and a holding member that is provided on the holding member. A manual rotating member that adjusts the focus of the focusing optical system and rotates about an axis parallel to the optical axis of the focusing optical system, and a conversion member that converts the rotation into a linear movement of the focusing optical system. A microscope optical system, characterized in that the holding member is formed so that the fixed focus optical system and the focusing optical system can be inserted selectively into the optical path of the microscope. An insertion / removal device is provided.

Further, in the microscope optical system insertion / removal device of the present invention, the holding member rotates about a rotation axis parallel to the optical axis of the focusing optical system, and the fixed focus optical system and the focusing optical system. It is preferable that the optical system and the optical system can be selectively inserted into the optical path of the microscope.

Further, in the microscope optical system insertion / removal device of the present invention, the focusing adjustment means includes a cylindrical lead tube which is externally fitted to the outer peripheral portion of the movable lens holding member so as to be rotatable about an axis. It is preferable to have a rotation transmission member that transmits the rotation of the manual rotation member to the lead cylinder, and the conversion member should convert the rotation of the lead cylinder into the linear movement of the focusing optical system.

Further, in the microscope optical system insertion / removal device of the present invention, the conversion member is provided in the lead tube, and a lead groove which is a long hole inclined in a predetermined angle with respect to the optical axis direction, and the lead. It is preferable that the distal end portion of the pin is movably engaged in the groove and is fixed to the outer peripheral surface of the movable lens holding member so as to project in the radial direction.

Further, in the microscope optical system insertion / removal device of the present invention, the rotation transmitting member is a gear provided on the outer peripheral portion of the lead tube and the manual rotating member for transmitting rotation to a gear meshing with the gear. And a manual gear rotation member.

Further, in the microscope optical system inserting / removing device of the present invention, the rotation transmitting member transmits the rotation to a pulley provided on an outer peripheral portion of the lead tube and a pulley connected to the pulley by a belt. And a manual pulley rotating member which is a manual rotating member.

In the microscope optical system insertion / removal device of the present invention, it is preferable that the manual rotating member is a cylindrical member, and a fixed focus optical system is provided inside the cylindrical member.

Further, in the microscope optical system insertion / removal device of the present invention, it is preferable that the manual rotation member is provided at a position symmetrical to the focusing optical system with respect to the rotation axis of the holding member. .

Further, in the microscope optical system insertion / removal device of the present invention, the rotation center of the manual rotation member passes through the rotation axis of the holding member, and the optical axis of the focusing optical system and the rotation axis of the holding member. It is preferable to be provided in an axis line substantially orthogonal to the axis line connecting the lines and in the vicinity of the axis line.

In the above arrangement, the focus adjusting means of the focus optical system is composed of the lead tube and the gear, and does not occupy the space in the apparatus as in the conventional case. The system can be arranged.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. 1 is a sectional view of a microscope optical system insertion / removal device showing a first embodiment of the present invention, FIG. 2 is a sectional view showing an AA cross section of FIG. 1, and FIG. 3 shows a positional relationship between a lead groove and a pin. FIG. 4 is a cross-sectional view of a microscope optical system insertion / removal device showing a second embodiment of the present invention, and FIG. 5 is a cross-sectional view showing a BB cross section of FIG.

In FIG. 1, 1 is a main body of an inverted microscope, and 3
Is a lens barrel, 5 is an imaging lens, 7 is a prism, and 9 is a turret portion which is the microscope optical system inserting / removing device of the present invention, and has a function of inserting / removing a plurality of optical systems. Reference numeral 11 is a binocular prism unit that branches the optical path for the left and right eyes to form an image. Reference numeral 13 is an eyepiece.

The rotating member 15 which is a holding member for the optical system and the like of the turret portion 9 corresponds to an optical system inserting / removing means, and the rotating member 15 is attached to the housing 17 of the lens barrel portion 3 and is attached to the binocular portion. It is rotatably attached to the member 19 by a shaft 21 (rotating shaft). Four optical systems 22, 23, 24 and 25 are arranged around the axis 21 of the rotating member 15. These optical systems are a focusing optical system and a fixed optical system.
The observer can insert a desired optical system into the optical path of the microscope by rotating the rotating member 15. At this time, the balls 27 attached to the rotating member 15 are fitted into holes (not shown) or slits in the leaf spring 29 for click, whereby the turret portion 9 is positioned at the insertion position of each optical system.

FIG. 1 shows a state in which the Bertrand lenses 31, 33 which are the focusing optical system 22 are inserted in the optical path of the microscope 1. Bertrand lens 31 is rotating member 1
It is held in a cylindrical fixed lens chamber 35 attached to the lens 5. The belt run lens 33 that needs to be moved for focusing is held in a moving lens chamber 37 that is a moving lens holding member, and the moving lens chamber 37 is fixed lens chamber 35.
It is fitted inside so as to be slidable in the optical axis direction. As shown in FIG. 3, a pin 39 is fixed to the outer peripheral surface of the movable lens chamber 37 (not shown) so as to project in the radial direction. The pin 39 is provided on the side surface of the fixed lens chamber 35 in the optical axis direction. It penetrates through the elongated hole 35 a and projects to the outside of the fixed lens chamber 35. Therefore, when the movable lens chamber 37 moves in the optical axis direction, the movable lens chamber 37 does not rotate about the optical axis, and can be moved only in the optical axis direction by the pin 39 being guided by the elongated hole 35a.

A lead tube 36 having a lead groove 36b is rotatably fitted on the outer peripheral portion of the fixed lens chamber 35, and a tip portion of a pin 39 is engaged with the lead groove 36b. As shown in FIG. 3, the lead groove 36b is an elongated hole provided in the lead tube 36 in a direction inclined by a predetermined angle with respect to the optical axis direction, and the pin 39 is provided in the lead groove 36b.
Movably engaged. A gear 36a is integrally formed or fixed at a predetermined position on the outer peripheral portion of the lead tube 36. The pin 39 and the lead groove 36b constitute a conversion member that converts rotational movement into linear movement.

As shown in FIG. 2, a cylindrical optical system holding member 51 for holding the fixed focus optical system 23 is attached at a position substantially symmetrical to the fixed lens chamber 35 with respect to the shaft 21. A focus member 52 is rotatably fitted on the outer peripheral portion of the optical system holding member 51. Focus member 52
Focus ring 52a and gear 52c on the outer periphery of
Are integrally formed or fixed. Focus ring 5
A part (52b) of 2a is arranged so as to slightly project outward from the opening 15a of the rotating member 15. Inside the optical system holding member 51, the lens chamber 41 holding the intermediate variable power lenses 42 and 43 is fixed. A gear 40 is rotatably attached to the tip of the shaft 21 of the rotating member 15, and the gear 40 is installed at a position meshing with the gear 36a and the gear 52c.

The gear 40, the focus member 52, the gear 52c, and the focus ring 52a form a manual gear rotating member, and the gear 36a and the manual gear rotating member form a rotation transmitting means. And the lead tube 3
6, the rotation transmission means, and the conversion member constitute the focusing adjustment means of the focusing optical system.

In the above structure, the light from the main body 1 of the inverted microscope passes through the imaging lens 5, the prism 7 and the turret portion 9 in the lens barrel 3, and is split into the optical paths for the left and right eyes by the binocular prism portion 11. An image is formed, and this image is observed through the eyepiece lens 13.

When focusing the belt run lenses 31 and 33 during the preparation for this observation, the gear 52c is rotated by rotating the protrusion 52b (a part of the focus ring 52a) of the opening 15a of the rotating member 15. Is transmitted to the gear 36a via the gear 40, and the lead tube 36 rotates. With the rotation of the lead tube 36, the lead groove 36b
As shown in FIG. 3, the pin 39 engaged with the lead groove 3
It is guided by the movement of 6b in the rotation direction and moves in the optical axis direction. When the lead groove 36b rotates in the direction of arrow D from the state where the pin 39 is in the illustrated position, the pin 39 moves to the left in the figure in the optical axis direction, and when the lead groove 36b rotates in the direction of arrow E, The pin 39 moves to the right in the figure along the optical axis. This movement of the pin 39 means that the belt run lens 33 in the moving lens chamber 37 moves in the optical axis direction,
Focusing becomes possible by adjusting this movement. In this way, since the focus adjustment of the focus optical system 60 is performed by rotating the lead tube 36 via the gears 36a, 40, 52c, the focus adjusting means does not occupy the space in the rotating member 15. , More optical systems 23, 24, 25 can be provided.

In the first embodiment, the intermediate variable magnification lenses 42 and 43 are attached to the optical system holding member 51, but other optical systems, filters, shutters, etc. may be attached. Alternatively, it may be hollow without an optical system. Further, in the first embodiment, the gear 36a is configured to rotate via the gear 40 of the shaft 21, but the configuration is not limited to this, and a configuration in which the gear 36a is directly rotated by a gear coaxial with the focus ring is also considered. To be

Next, a second embodiment of the present invention will be described with reference to FIGS. This embodiment has substantially the same configuration as that of the first embodiment, and the same members are designated by the same reference numerals. The difference is that the guide cylinder 36 and the focus member 52 have, instead of the gear 36a and the gear 52c,
A pulley 36c and a pulley 52d are integrally formed or fixed to the moving lens chamber 37 and the focus member 52, respectively.
The pulley 36c and the pulley 52d are connected by a belt 55. In the case of this embodiment, the pulley 52
The d, the belt 55, the focus member 52, and the focus ring 52a constitute a manual pulley rotation means, and the pulley 36c and the manual pulley rotation means constitute a rotation transmission means.

In this structure, by rotating the protruding portion 52b protruding from the opening 15a of the rotating member 15, the lead cylinder 36 is rotated via the pulley 52d, the belt 55, and the pulley 36c, and the lead groove 36b is engaged with the lead groove 36b. The combined pin 39 moves in the optical axis direction. The details of this operation are the same as in the first embodiment. As described above, when adjusting the focus of the focusing optical system 22, the lead tube 36 is moved to the pulley 36.
Since it is performed by rotating through c and 52d, the pin driving member is not required unlike the conventional case, and the focus adjusting means does not occupy the space in the rotating member 15,
It has the same effect as the first embodiment.

In the above embodiment, the case where the manual gear rotating means and the manual pulley rotating means are arranged at positions substantially symmetrical to the focusing optical system with respect to the rotation axis of the rotating member has been described. The arrangement of the manual gear rotating means and the manual pulley rotating means is not limited to this.
For example, the rotation center of the manual gear rotation means or the rotation center of the manual pulley rotation means passes through the rotation axis of the rotation member, and has an axis line that is substantially orthogonal to the axis line connecting the optical axis of the focusing optical system and the rotation axis of the rotation member. The positional relationship is not limited to the above, as long as the focusing optical system and the focusing adjusting means are provided on the rotating member in the vicinity thereof.

[0031]

As described above, according to the present invention,
Since the focus adjusting means of the focus optical system does not occupy the space in the apparatus, more other optical systems can be arranged.

[0032]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a microscope optical system insertion / removal device showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an AA cross section of FIG.

FIG. 3 is an explanatory diagram showing a positional relationship between lead grooves and pins.

FIG. 4 is a sectional view of a microscope optical system insertion / removal device showing a second embodiment of the present invention.

5 is a cross-sectional view showing a BB cross section of FIG. 4;

FIG. 6 is a sectional view showing a conventional microscope optical system insertion / removal device.

FIG. 7 is a sectional view showing a CC section in FIG.

[Explanation of symbols]

1 microscope 15 Optical system insertion / removal means (rotating member) 33 lenses (Bertrand lenses) 37 Moving lens holding member (moving lens chamber) 39 pin 36 lead tube 36b lead groove 36a, 40, 52c gears

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03B 3/00 Z

Claims (9)

[Claims] 1. A fixed-focus optical system having a fixed-focus lens, and a focusing optical system in which a focusing lens is held by a moving lens holding member and which is movable in the optical axis direction and is non-rotatably mounted on the axis center. A holding member that holds the fixed focus optical system and the focusing optical system, and a holding member that is provided on the holding member and adjusts the focus of the focusing optical system, and is parallel to the optical axis of the focusing optical system. The focusing member comprises a manual rotating member that rotates about an axis and a conversion member that converts the rotation into a linear movement of the focusing optical system, and the holding member includes the fixed focus optical system and the focusing member. A microscope optical system insertion / removal device, characterized in that it is formed so that it can be selectively inserted into the optical path of a microscope with a focusing optical system. 2. The holding member rotates about an axis of rotation parallel to the optical axis of the focusing optical system, and the fixed focus optical system and the focusing optical system are selectively placed in the optical path of the microscope. The microscope optical system insertion / removal device according to claim 1, which is formed so as to be insertable. 3. The focusing adjustment means includes a cylindrical lead tube that is rotatably fitted around an outer peripheral portion of the movable lens holding member about an axis, and transmits the rotation of the manual rotation member to the lead tube. The microscope optical system insertion / removal device according to claim 1, further comprising a rotation transmission member for converting the rotation of the lead tube into a linear movement of the focusing optical system. 4. The conversion member is provided in the lead tube and has a lead groove which is a long hole in a direction inclined by a predetermined angle with respect to the optical axis direction, and a distal end portion of which is movable in the lead groove. The optical system insertion / removal device according to claim 1 or 3, further comprising: a pin fixed to an outer peripheral surface of the movable lens holding member so as to project in a radial direction. 5. The rotation transmission member includes a gear provided on an outer peripheral portion of the lead cylinder, and a manual gear rotation member which is the manual rotation member for transmitting rotation to a gear meshing with the gear.
The microscope optical system insertion / removal device according to claim 1 or 3, comprising: 6. The rotation transmission member includes a pulley provided on an outer peripheral portion of the lead cylinder, and a manual pulley rotation member which is the manual rotation member for transmitting rotation to a pulley connected to the pulley by a belt. 2. The method according to claim 1, wherein
Alternatively, the microscope optical system insertion / removal device according to the item 3. 7. The microscope optical system according to claim 1, wherein the manual rotating member is a cylindrical member, and a fixed focus optical system is provided inside the cylindrical member. System insertion / removal device. 8. The manual rotating member according to claim 1, wherein the manual rotating member is provided at a position symmetrical with respect to the focusing optical system with respect to the rotation axis of the holding member. Microscope optical system insertion / removal device. 9. An axis line of a rotation center of the manual rotation member, which passes through a rotation axis of the holding member and is substantially orthogonal to an axis line connecting the optical axis of the focusing optical system and the rotation axis of the holding member, and the axis line. The microscope optical system insertion / removal device according to claim 1, 5 or 6, which is provided in the vicinity.