JP4464649B2 - Microscope rotation stage and polarization microscope - Google Patents

Description

  The present invention relates to a microscope that can be applied to an inexpensive polarization microscope, for example, for education and inspection, and to improve the rotation accuracy of the rotation stage and ensure the same, and a polarization microscope using the same About.

  The rotating stage of such a polarizing microscope is one of the basic and important components used in various situations. For example, when the angle of the observation sample in an orthoscope is changed, or when the extinction position (position where the observation sample becomes darkest) or the diagonal position (position where the observation sample becomes brightest) is detected in the retardation measurement, a rotating stage is used for the polarization microscope. Rotation of the observation sample by is an essential function.

  The performance required for such a rotary stage is to smoothly rotate the observation specimen without changing the position of an arbitrary part to be observed within the observation field of the polarizing microscope. As a condition for this, first, it is necessary to completely match the rotation center position of the rotary stage with the optical axis of the objective lens (that is, the center of the visual field). In order to adjust the rotation center position of these rotary stages and the optical axis of the objective lens, some kind of adjustment mechanism is usually provided.

  The next condition is how to rotate the rotation center of the rotation stage with high accuracy with the rotation center position of the rotation stage coincident with the optical axis of the objective lens.

  Some rotary stages are expensive using high-precision radial bearings in order to maintain high-precision rotation by eliminating the rotation center. Such a rotation stage is generally often applied to an expensive microscope for research use or the like, and is rarely applied to an educational / practical microscope requiring low cost.

  As a rotating stage of a polarizing microscope that requires each of these conditions, for example, Patent Document 1 describes a configuration of a sliding bearing type rotating stage by sliding fitting.

  In Patent Document 2, in a microscope stage used for position adjustment of an observation sample of a polarizing microscope, slide glass holders orthogonal to each other are held on a freely rotatable disk-shaped stage with an angle display scale near the circumference. It is described that a tool and a slide glass presser are arranged, and the observation sample on the slide glass is moved and adjusted by the slide glass holder and the slide glass presser so as to fall within the field of view of the microscope.

  In Patent Document 3, in a microscope stage that enables rotation and tilting of an XY-axis movable stage, a rotatable table is provided on a base, and an upward protrusion amount can be adjusted on the rotary table. As a structure for supporting the XY-axis movable stage through three support pin members, it is described that the rotation and inclination of the XY-axis movable stage are adjusted.

Patent Document 4 discloses a stage holder having a convex mount, a rotation guide ring having a concave portion corresponding to the stage holder and capable of adjusting and fixing the position with respect to the stage holder, and a rotation guide ring as a guide and orthogonal to the optical axis. The rotary stage includes a rotating member that can rotate in a plane that can adjust the centering by a thin structure.
Japanese Utility Model Publication No. 36-19571 JP 60-88919 A Japanese Patent Laid-Open No. 7-56093 Japanese Patent Laid-Open No. 8-43742

  However, Patent Document 1 performs fitting by minimizing the backlash by fitting with a general fitting dimension between the shaft and hole of the rotary stage or by processing the shaft of the rotary stage according to the hole size. There is a need. For this reason, no matter how small the axis and hole dimensions of the rotary stage are, a small gap is required to rotate the rotary stage, and this gap becomes a backlash when the rotary stage is operated. Appear.

  At a normal production level, it is difficult to make the clearance between the shaft and the hole of the rotary stage 10 μm or less, and even if it can be made, a great deal of time and cost are consumed. For example, when polarization observation is performed on a rotating stage with a 10 μm backlash, especially when observing with a high-magnification objective lens, when the rotating stage is rotated, the part to be observed of the observation sample is within the observation field according to the rotation. Since there is no fixed position, there is a possibility that a change in polarization characteristics due to accurate rotation cannot be captured.

  On the other hand, it is conceivable to use a commercially available bearing or ball system as a configuration for reducing the rotation play, but it cannot be applied to an inexpensive polarizing microscope due to the high cost of parts and the increase in the number of assembly steps. Especially when observing with a high-magnification objective lens, the position of the part to be observed in the observation sample is not constant according to the rotation in the observation field when the rotary stage is rotated. May not be able to be captured.

  Patent Document 2 does not disclose a specific configuration that enables rotation of the rotary stage, for example, a guide mechanism such as sliding fitting or bearing.

  Patent Document 3 discloses a mechanism for rotating a rotary table via a pinion and a gear by operating an operation dial. However, a specific configuration, for example, a guide mechanism such as a sliding fitting or a bearing is disclosed. Not.

  Patent Document 4 describes that a plurality of rolling elements, for example, balls, rollers, and the like are arranged between a rotating guide ring as a guide member and a rotating member. A specific configuration for rotating, for example, a configuration for applying a preload is not disclosed. Further, since it is a rolling-type rotary stage using rolling elements, it is necessary to increase the accuracy such as roundness required for parts. For this reason, the price which concerns on components becomes high, and as a result, a rotation stage cannot be manufactured cheaply.

The present invention relates to a stage seat having an opening formed at the center, a rotary stage shaft on which an observation sample is placed and rotatably fitted in the opening of the stage seat, and the rotary stage shaft as a stage. The microscope rotation stage includes a stop member that supports the seat in a rotatable state, and an adjustment member that is provided on the stage seat and presses and fixes the rotary stage shaft in one direction within the opening of the stage seat. .

  The present invention is a polarizing microscope using the rotating stage of the microscope.

  INDUSTRIAL APPLICABILITY The present invention can provide a rotating stage of a microscope that can be rotated with high accuracy without being shaken at the center of rotation while being inexpensive, and a polarizing microscope using the same.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall configuration diagram of a polarization microscope to which a microscope rotation stage is applied. The microscope main body 1 is formed in a U shape. A transmitted illumination light source 2 is provided below the microscope body 1. A collector lens 3 is provided on the optical path (on the optical axis P) of the transmitted illumination light emitted from the transmitted illumination light source 2. The collector lens 3 collects the transmitted illumination light emitted from the transmitted illumination light source 2.

  A stage receiving portion 4 is provided at an intermediate portion of the microscope main body 1 so as to be movable up and down. A capacitor receiver 6 is provided at the end portion 5 of the stage receiving portion 4 so as to be movable up and down by rotating the handle 7. A condenser lens 8 is inserted and fixed to the condenser receiver 6. The condenser lens 8 condenses the transmitted illumination light emitted from the transmitted illumination light source 2 on the slide glass (observation sample) S. A polarizer unit 9 is rotatably attached to the lower part of the capacitor receiver 6. A polarizer (polarizing plate) 10 is provided in the polarizer unit 9. The condenser lens 8 and the polarizer 10 are provided on the optical axis P.

  The stage receiver 4 moves up and down with respect to the microscope main body 1 by rotating the coarse / fine movement handle 11. The stage receiving unit 4 is provided with a stage base 12. The stage base 12 has an opening 13 at the center. A rotary stage unit 14 is provided on the stage base 12. On the rotary stage unit 14, a slide glass (observation sample) S holding the observation sample is placed.

  A push pin 15 is slidably inserted into one place on the stage base 12. The push pin 15 is pressed against the stage base 12 by a screw 17 via a coil spring 16.

  Further, a point symmetric with respect to the location where the push pin 15 is attached on the stage base 12 via the center of the stage base 12 and a location with an opening angle of 120 ° from the center of the stage base 12 with respect to this location. Core screws 18 are provided at two locations in total. These core screws 18 move the rotary stage unit 14 in the XY directions by a rotating operation.

  A revolver 19 is rotatably provided on the upper portion of the microscope body 1. The revolver 19 is attached to a plurality of objective lenses 20 so as to be attachable / detachable. The revolver 19 can rotate and arrange a desired objective lens 20 on the optical axis P by rotating with respect to the microscope body 1.

  An intermediate lens barrel 21 is provided on the upper surface of the microscope body 1. Although not shown, the intermediate lens barrel 21 incorporates a belt run lens 23 for projecting the pupil of the analyzer and the objective lens 20 onto the focal plane of the eyepiece lens 22. The intermediate barrel 21 is provided with a slot 24.

  A lens barrel 25 is provided on the intermediate lens barrel 21. The lens barrel 25 includes an imaging lens 26 and a prism 27 for turning the optical path back toward the eyepiece lens 22.

  2 and 3 are configuration diagrams of the rotary stage unit 14, in which FIG. 2 is a cross-sectional view and FIG. 3 is a bottom view. The stage seat 30 is formed in an annular shape, and its side surface 31 is inclined. The push pin 15 and each core screw 18 abut on the side surface 31. A rotary stage shaft 32 is rotatably fitted to the stage seat 30 via a convex fitting piece 33 formed along the edge of the opening 34 of the rotary stage shaft 32.

  The rotary stage shaft 32 is formed in an annular shape having a circular opening 34 at the center. The rotary stage shaft 32 is formed with a tapered portion 35 whose thickness is reduced toward the opening 34.

  FIG. 4 shows an enlarged view of a fitting portion between the stage seat 30 and the rotary stage shaft 32. Recessed relief portions 36 and 37 are provided on contact surfaces of the rotary stage shaft 32 with the stage seat 30, respectively. The rotary stage shaft 32 and the stage seat 30 are supported by a stop member 38. The stop member 38 has a partially sectioned L shape and is formed in an annular shape, and is screwed to the inner wall surface of the fitting piece 33 of the rotary stage shaft 32. Thereby, the rotary stage shaft 32 is fixed so as to be rotatable with respect to the stage seat 30 and not to move in the direction of the rotary shaft.

  As shown in FIG. 3, the stage seat 30 is provided with slide-type adjusting members 39 and 40. The adjusting members 39 and 40 are provided at an arbitrary angle θ with respect to the center of the stage seat 30, for example, at an interval of θ = 120 °. These adjustment members 39 and 40 have adjustment pieces 41 and 42, and screws 43 and 44 as fixing members, respectively. Each adjustment piece 41, 42 is formed in a circular arc having the same curvature as the curvature of the outer peripheral edge of the fitting piece 33 with the shape of each end face 41 a, 42 a contacting the outer wall surface of the fitting piece 33 of the rotary stage shaft 32. Has been. The adjusting pieces 41 and 42 are slidable in the direction (A) toward the center of the stage seat 30.

  The adjusting members 39 and 40 slide the adjusting pieces 41 and 42 in the central direction (A) with respect to the stage seat 30, thereby causing the end surfaces 41 a and 42 a to be the outer wall surfaces of the fitting pieces 33 of the rotary stage shaft 32. And the rotary stage shaft 32 is pressed in one direction of the stage seat 30 to adjust so that the play between the stage seat 30 and the rotary stage shaft 32 is minimized or eliminated. The adjusted pieces 41 and 42 thus adjusted are fastened by the screws 43 and 44 and fixed to the stage seat 30.

  Next, the operation of the rotating stage of the microscope configured as described above will be described.

  Polarization characteristic measurement (retardation measurement) is performed by orthoscope observation. In this observation, the turret (not shown) in the intermediate lens barrel 21 for polarization observation is switched, and the belt run lens 23 is set to a hole position that is not located on the optical axis P of the objective lens 20. Further, the analyzer is removed by operating an operation knob (not shown) in the intermediate lens barrel 21 (analyzer OUT state). The polarizer unit 9 is removed. In addition, although the polarizer 10 may be attached, illumination becomes a little dark.

  In the same manner as in an ordinary observation method such as bright field, the coarse / fine adjustment handle 11 is rotated to roughly focus the objective lens 20 on the slide glass (observation sample) S. Next, the position of the condenser lens 8 is optimally adjusted by rotating the handle 7. Again, the focus is accurately adjusted to the slide glass (observation sample) S.

  Next, an operation knob (not shown) in the intermediate lens barrel 21 is operated to insert the analyzer (analyzer IN state), and then the rotational position of the analyzer is set to the scale “0”. Next, the polarizer unit 9 is attached. Here, after the slide glass (observation sample) S is once removed from the rotary stage shaft 32, the analyzer and the polarizer 10 are brought into a state of being orthogonal (crossed Nicols). As an actual operation, the polarizer unit 9 is rotated to make the analyzer and the polarizer 10 cross Nicol.

  By placing the slide glass (observation sample) S on the rotary stage shaft 32 again, orthoscope observation becomes possible. This operation is because a reference is desired when performing observation according to the rotation angle of the analyzer.

  Next, the center position of the rotary stage shaft 32 is aligned with the position where the slide glass (observation sample) S is to be observed. For example, the objective lens 20 is set to a low magnification such as 10 times magnification. The slide glass (observation sample) S is directly moved to a position where the observation sample S is to be observed, or the entire rotation stage unit 14 is moved in the X and Y directions by rotating the core screw 18, and the center of the rotation stage shaft 32. The position is adjusted to the observation position of the slide glass (observation sample) S.

  When the rotary stage shaft 32 is rotated in this state, the movement of the slide glass (observation sample) S with respect to the center of the observation field within the observation field of the eyepiece 22 is confirmed. The slide glass (observation sample) S moves, for example, by drawing a circular trajectory with the center of the observation field as the center of movement. Therefore, the rotation of the rotation stage unit 14 in the XY direction is performed by rotating the core screw 18 so that the center of the locus (circle) of the point to be observed in the slide glass (observation sample) S is the center position of the observation field. . In this state, only the slide glass (observation sample) S is moved and the point to be observed in the observation sample is adjusted to the center of the observation field. The above adjustment is sequentially switched to the objective lens 20 of low magnification (10 times) to high magnification (40 times), and the center position of the rotary stage shaft 32 is adjusted to the position where the observation sample is to be observed.

  When various compensators are inserted into the slot 24 of the intermediate lens barrel 21, the retardation of the observation sample can be measured.

  Next, adjustment of backlash between the stage seat 30 and the rotary stage shaft 32 will be described with reference to FIGS. 5 and 6 show the backlash amount between the stage seat 30 and the rotary stage shaft 32 with emphasis.

  FIG. 5 shows a fitting state between the stage seat 30 and the rotary stage shaft 32 before the adjustment members 39 and 40 are provided. The amount of play between the stage seat 30 and the rotary stage shaft 32 is represented by 2 × x if the clearance between the stage seat 30 and the rotary stage shaft 32 is Δx.

  With normal machining accuracy, the gap Δx is 5 to 10 μm (2 · Δx = 10 to 20 μm in diameter). Grease or the like is applied to the gap Δx as a lubricant for smooth rotation of the rotary stage shaft 32 and improvement of durability. The amount of force for rotating the rotary stage shaft 32 also changes depending on the viscosity characteristic of the grease. The amount of starting force and the amount of operating force when rotating the rotary stage shaft 32 also change depending on the static / dynamic friction coefficient of grease.

  FIG. 6 shows a configuration in which the adjustment members 39 and 40 are provided. The adjusting members 39 and 40 slide the adjusting pieces 41 and 42 in the direction (A) toward the center with respect to the stage seat 30. Thereby, each end surface 41a and 42a of each adjustment piece 41 and 42 contacts the outer wall surface of the fitting piece 33 of the rotation stage shaft 32, and the rotation stage shaft 32 is set to one direction (arrow B direction) of the stage seat 30. Press.

  As a result, the backlash between the stage seat 30 and the rotary stage shaft 32 is adjusted to be minimal or eliminated. The adjusted pieces 41 and 42 thus adjusted are fastened by the screws 43 and 44 and fixed to the stage seat 30.

  In this way, the rotary stage shaft 32 is brought close to the stage seat 30 by the backlash by the adjusting members 39 and 40. As a result, the rotary stage shaft 32 is fitted into the stage seat 30 in contact with a part of the outer periphery and the adjustment members 39 and 40. At this time, the rotation center backlash of the rotary stage shaft 32 is determined depending on the axial roundness of the rotary stage shaft 32 and can be, for example, 1 to 2 μm. However, it is possible to further reduce the rotational center play by performing lapping after assembling the rotary stage shaft 32 to the stage seat 30.

  As described above, according to the first embodiment, the adjustment members 39 and 40 are provided on the stage seat 30 to which the rotary stage shaft 32 is rotatably fitted, and the adjustment pieces 41 of the adjustment members 39 and 40 are provided. 42 is slid in the center direction (A) with respect to the stage seat 30, and the rotary stage shaft 32 is moved toward the stage seat 30 by the backlash amount to minimize the backlash between the stage seat 30 and the rotary stage shaft 32. Or adjust to eliminate.

  Thereby, the rotary stage unit 14 on which the slide glass (observation sample) S is placed can be rotated in a state where the backlash between the stage seat 30 and the rotary stage shaft 32 is minimized or eliminated. The backlash between the stage seat 30 and the rotary stage shaft 32 can be adjusted with a simple configuration using the adjusting members 39 and 40 and can be realized at low cost. Therefore, the adjustment of the play between the stage seat 30 and the rotary stage shaft 32 by the adjusting members 39 and 40 is suitable for an educational / practical microscope.

  Further, it is possible to adjust the play between the stage seat 30 and the rotary stage shaft 32 to be minimized or eliminated with the existing fitting accuracy without increasing the fitting accuracy between the stage seat 30 and the rotary stage shaft 32.

  Furthermore, in terms of cost, the cost is increased only by the cost required for each adjustment member 39, 40 and the cost related to the assembly time of these adjustment members 39, 40, and does not lead to a significant increase in price.

  Further, since the play is eliminated by the combined use of the fitting between the stage seat 30 and the rotary stage shaft 32 and the adjustment by the adjustment members 39 and 40, the burden on the adjustment members 39 and 40 can be minimized and the durability can be reduced. Can be improved.

  With the rotating stage unit 14 of such a polarizing microscope, for example, when the angle of the slide glass (observation sample) S in the orthoscope is changed or the extinction position and the diagonal position are detected in the retardation measurement, the slide glass is used. Even if the rotary stage unit 14 on which the (observation sample) S is placed is rotated, the observation can be performed without changing the position of an arbitrary portion of the slide glass (observation sample) S to be observed in the observation field of view.

  Next, a modification of the first embodiment will be described.

  7 and 8 are configuration diagrams showing modifications of the respective adjustment members provided in the rotary stage unit 14, wherein FIG. 7 is a sectional view and FIG. 8 is a bottom view of the rotary stage unit. Each of the adjustment members 50 and 51 has a contact width with the rotary stage shaft 32 that is larger than the contact width and the contact height dimension of the adjustment members 39 and 40 with the rotary stage shaft 32 in the first embodiment. It is formed large and has a high contact height. The stage seat 52 may change its shape in accordance with changes in the contact width and contact height dimensions of the adjustment members 50 and 51.

  The shape of each adjustment member 39, 40 and 50, 51 is not particularly defined with respect to the contact width and contact height with the rotary stage shaft 32. If the contact area with the rotary stage shaft 32 increases, the surface pressure per unit area decreases, which is advantageous in terms of durability such as wear.

  The material of each adjustment member 39, 40 and 50, 51 may be any material as long as it maintains accuracy and has strength against resistance during rotation of the rotary stage shaft 32. For example, aluminum, brass, iron, resin, etc. Good. The adjustment members 39, 40, 50, and 51 have compatibility with the rotary stage shaft 32. For example, if the rotary stage shaft 32 is made of aluminum, the adjustment members 39, 40, and 50, 51 is preferably the same aluminum or a material having equivalent mechanical properties.

  Each of the adjustment members 39, 40 and 50, 51 is a slide type, but may be in the shape of a bearing, a roller, a ball, or a pin, as long as it can regulate two points of the rotary stage shaft 32.

  In the first embodiment, the adjustment members 39, 40 and 50, 51 are provided at two locations, respectively, but the adjustment members 39, 40, 50, and 51 are not limited to two locations, and may be provided at a plurality of three or more locations.

  Next, a second embodiment of the present invention will be described with reference to the drawings. 2 and 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  9 and 10 are configuration diagrams of the rotary stage unit 14. FIG. 9 is a cross-sectional view, and FIG. 10 is a bottom view. In addition, the right side of the optical axis P in FIG. 9 is a BB cross-sectional view of FIG. In the inner periphery of the stage seat 30, for example, bearings 60, 61, 62 are provided at three locations at equal intervals for each angle 120. These bearings 60, 61, 62 correspond to, for example, a grade 4 small diameter ball bearing or a deep groove ball bearing. These bearings 60, 61, 62 are rotatably supported on respective shafts 63, 64, 65 fixed to the stage seat 30. These bearings 60, 61, 62 are in contact with the fitting piece 33 of the rotary stage shaft 32.

  Of these, the bearing 62 is rotatably supported by a leaf spring-like elastic member 66. The elastic member 66 is fixed to the stage seat 30 by each pin 67. The elastic member 66 applies a biasing force toward the center direction of the stage seat 30. The amount of force of the elastic member 66 is such that a small backlash of the bearing 62 itself can be moved to one side so that it is not affected even when the rotary stage shaft 32 is rotated, for example, by a finger. Large capacity is set.

  As described above, according to the second embodiment, the bearings 60, 61, 62 are provided, for example, at three locations on the inner periphery of the stage seat 30, and the bearing 62 is centered on the stage seat 30 by the elastic member 66. A biasing force was given in the direction.

  As a result, the rotary stage shaft 32 can be moved toward the stage seat 30 by the backlash amount so that the backlash between the stage seat 30 and the rotary stage shaft 32 can be minimized or eliminated. By this adjustment, the stage seat 30 and the rotary stage shaft can be adjusted. The rotary stage unit 14 on which the slide glass (observation sample) S is placed can be rotated in a state in which the backlash between the slide glass 32 and the slide glass 32 is minimized or eliminated.

  Here, the roundness of the axis of the rotary stage shaft 32 in contact with each of the bearings 60, 61, 62 is suppressed to high accuracy (about 1 to 2 μm). Each bearing 60, 61, 62 has a small backlash, but since it is always moved toward the center of the stage seat 30 by the action of the elastic member 66, the center of the rotary stage shaft 32 is its own true position. Eccentricity is generated only by the variation due to circularity and the rotational eccentricity of the bearings 60, 61, 62 themselves.

  Compared with the first embodiment, since the bearings 60, 61, 62 are used as the rotation guide, the amount of rotational force is small, and the operability can be improved. Moreover, since there is no fitting sliding, it is further inexpensive.

  The durability is clearly improved compared to the slip between the adjusting members 39 and 40 and the rotary stage shaft 32 in the first embodiment because the rolling by the bearings 60, 61 and 62 is used. it can.

  Next, a modification of the second embodiment will be described.

  In the second embodiment, the bearings 60, 61, and 62 are supported by the elastic member 66 and pressed against the rotary stage shaft 32. However, the positioning and fixing can be easily performed. The elastic member 66 is formed in the shape of a leaf spring, but a compression / tensile coil spring, rubber or the like may be used.

  Further, instead of the bearings 60, 61, 62, balls or rollers may be used. The bearings 60, 61 and 62 are in contact with the rotary stage shaft 32 in the horizontal direction. However, if there is axial backlash, the rotary stage shaft 32 is moved in the axial direction as shown in FIG. You may contact at an angle to press.

  Each bearing 60, 61, 62 is attached to the stage seat 30 in an inclined manner. Accordingly, the bearings 60, 61, 62 are arranged so as to roll perpendicularly to the axial surface of the rotary stage shaft 32. Of these, the bearing 62 applies an urging force toward the center of the stage seat 30 by a leaf spring-like elastic member 66 in an inclined state. As a result, the rotary stage shaft 32 always exerts a force in the Z direction and as a result always abuts against a surface in one direction, thereby reducing backlash in the rotational axis direction.

  In the second embodiment, the bearings 60, 61, and 62 are provided at three locations, respectively, but may be provided at a plurality of three or more locations.

  Further, the number of adjusting members 39, 40, 50, 51 is not limited to two, and one or two or more may be provided. For example, one adjustment member 39 is provided, and the adjustment piece 41 in the adjustment member 39 is slid in the center direction with respect to the stage seat 30, and the rotary stage shaft 32 is pressed against the adjustment member 39 in the stage seat 30. You may make it adjust so that the backlash between the stage seat 30 and the rotation stage axis | shaft 32 may be minimized or eliminated.

  Further, for example, two bearings 62 and 62 are provided at a predetermined interval, and these bearings 62 and 62 are slid in the center direction with respect to the stage seat 30 so that the rotary stage shaft 32 faces the adjustment member 39 on the stage seat 30. The backlash between the stage seat 30 and the rotary stage shaft 32 may be adjusted to be minimized or eliminated by pressing toward the side.

  In addition, for example, one adjustment member 39 and two fixed reference pieces on the opposite side of the adjustment member 39 are provided at a predetermined interval, and the adjustment piece 41 in one adjustment member 39 is disposed with respect to the stage seat 30. You may make it adjust so that the backlash between the stage seat 30 and the rotation stage axis | shaft 32 may be minimized or eliminated by sliding to the center direction and pressing the rotation stage axis | shaft 32 against two reference pieces.

  Further, for example, one adjustment member 39 and two fixed bearings on the side opposite to the adjustment member 39 are provided at a predetermined interval, and the adjustment piece 41 in one adjustment member 39 is centered with respect to the stage seat 30. The rotary stage shaft 32 may be slid in the direction and pressed against the two bearings to adjust so that the backlash between the stage seat 30 and the rotary stage shaft 32 is minimized or eliminated.

1 is an overall configuration diagram of a polarization microscope to which a first embodiment of a microscope rotation stage according to the present invention is applied. FIG. Sectional drawing of the rotation stage unit in the rotation stage of the microscope. The bottom view of the rotation stage unit in the rotation stage of the microscope. The enlarged view of the fitting part of the stage seat and rotation stage axis | shaft in the rotation stage of the microscope. The figure which shows the backlash between the stage seat and rotation stage axis | shaft in the rotation stage of the microscope. Sectional drawing of the rotation stage unit which provided each adjustment member in the rotation stage of the microscope. Sectional drawing which shows the modification of the adjustment member provided in the rotation stage unit in the rotation stage of the microscope. The bottom view of the rotation stage unit in the rotation stage of the microscope. Sectional drawing of the rotation stage unit in 2nd Embodiment of the rotation stage of the microscope which concerns on this invention. The bottom view of the rotation stage unit in the rotation stage of the microscope. Sectional drawing which shows the modification of the bearing in the rotation stage of the microscope.

Explanation of symbols

  1: microscope body, 2: transmitted illumination light source, 3: collector lens, 4: stage receiver, 5: end of stage receiver, 6: condenser receiver, 7: handle, 8: condenser lens, 9: polarizer unit, 10: Polarizer (polarizing plate), 11: Coarse / fine movement handle, 12: Stage base, 13: Opening, 14: Rotating stage unit, 15: Push pin, 16: Coil spring, 17: Screw, 18: Core screw, 19: Revolver, 20: objective lens, 21: intermediate lens barrel, 22: eyepiece lens, 23: belt run lens, 24: slot, 25: lens barrel, 26: imaging lens, 27: prism, 30: stage seat, 31: stage Side face of seat, 32: rotary stage shaft, 33: fitting piece, 34: opening, 35: taper part, 36, 37: relief part, 38: stop member, 39, 40: adjustment part , 41: adjusting piece, 43: screw, 50, 51: adjustment member, 52: Stage seat, 60-62: Bearing, 63, 64 and 65: Axis 66: elastic member.

Claims (13)

A stage seat with an opening in the center,
A rotating stage shaft on which an observation sample is placed and rotatably fitted in the opening of the stage seat;
A stop member that supports the rotary stage shaft in a rotatable state with respect to the stage seat;
An adjustment member provided on the stage seat and pressing and fixing the rotary stage shaft in one direction within the opening of the stage seat;
A microscope rotation stage characterized by comprising: 2. The microscope rotation stage according to claim 1, wherein the adjustment member is provided so as to be adjustable at at least two positions having a predetermined opening angle from a center position of the stage seat. 3. The microscope rotation stage according to claim 2, wherein the opening angle is within 180 [deg.]. The adjustment member is an adjustment piece slidable in the center direction of the stage seat with respect to the stage seat;
A fixing member for fixing the adjustment piece to the stage seat;
The rotation stage of the microscope according to claim 1 or 2, characterized by comprising: The plurality of adjustment members are respectively a plurality of adjustment pieces that can slide in the center direction of the stage seat with respect to the stage seat;
A plurality of fixing members for fixing the adjusting pieces to the stage seat;
The microscope rotation stage according to claim 2, further comprising: 6. The microscope rotation stage according to claim 4, wherein the adjustment piece can be arbitrarily set in contact width and contact height with the rotation stage axis. 2. The microscope rotation stage according to claim 1, wherein the adjustment member is provided so as to be adjustable at least at one place with respect to the stage seat. The adjusting member includes a shaft provided on the stage seat,
A bearing provided rotatably with respect to the shaft;
The microscope rotation stage according to claim 1, comprising: The adjustment member is provided in a plurality at each position where a predetermined opening angle is opened from the center position of the stage seat, and at least one of the bearings is an elastic member that applies a biasing force to the bearing in the center direction of the stage seat. The microscope rotation stage according to claim 8, wherein the microscope rotation stage is supported by a member. The microscope rotation stage according to claim 9, wherein the elastic member is a spring. The microscope rotation stage according to claim 8 or 9, wherein the plurality of adjusting members are provided to be inclined with respect to the stage seat. A rotary stage unit is formed by rotatably fitting the rotary stage shaft into the opening of the stage seat,
2. The microscope rotation stage according to claim 1, wherein the rotation stage unit is provided on the stage base so as to be movable in the X and Y directions by operation of a core screw. A polarizing microscope using the rotating stage of the microscope according to any one of claims 1 to 12.

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