JP4812334B2 - Upright microscope - Google Patents

Description

  The present invention relates to an upright microscope that illuminates a sample through an objective lens and obtains an observation image of the sample by moving the objective lens up and down along the optical axis direction above the sample.

  In general, the focusing mechanism of an upright microscope has a configuration in which a stage on which a sample is placed is moved along the optical axis direction of the objective lens so that the objective lens is focused on the sample. In recent years, samples to be observed have been diversified, and the weight has been increased with the increase in size. In order to observe such a sample with an upright microscope, the stage on which the sample is placed needs to be enlarged.

  Under such circumstances, a large weight is added to the focusing mechanism of the upright microscope. For this reason, the focusing mechanism requires rigidity for the guide part and the drive part, and for example, a mechanism for reducing the amount of operation force such as a spring having a pushing force in a direction opposite to the direction in which the weight is applied.

  A focusing mechanism for observing such a large and heavy sample with an upright microscope is disclosed in Patent Document 1, for example. This focusing mechanism is not intended to focus by moving the stage on which the sample is placed in the vertical direction. A revolver equipped with an objective lens is provided in the objective lens holding section, and this objective lens holding section is used as the focusing mechanism. Provided.

By the operation of the focusing mechanism, the objective lens is moved in the vertical direction to change the distance between the objective lens and the sample and focus on the sample. In addition, since the distance between the objective lens and the lens barrel is variable, it is necessary to employ an infinite optical system between the objective lens and the lens barrel.
JP 7-333520 A

  The optical microscope provided with the focusing mechanism disclosed in Patent Document 1 has a configuration for observing a sample with transmitted illumination, and is different from a configuration for observing a sample with epi-illumination. In order to attach the epi-illumination device to the optical microscope, for example, the epi-illumination device is attached instead of the observation support unit, or the epi-illumination device is attached between the observation support unit and the lens barrel.

  An illumination system used in recent microscopes employs a Koehler illumination system capable of acquiring a bright observation image without unevenness in brightness. The Koehler illumination system includes, for example, a light source and an aperture stop. When this Koehler illumination system is employed, the light source of the Koehler illumination system, the aperture stop, and the rear focal point (pupil) of the objective lens are arranged in conjugate positional relationships. With this conjugate positional relationship, the sample is illuminated with bright and uniform epi-illumination.

  However, if the positional relationship among the light source, the aperture stop, and the back focal point (pupil) of the objective lens is extremely broken, uneven illumination may occur or the amount of light may be insufficient.

  In the focusing mechanism disclosed in Patent Document 1, when the thickness of the sample is large, the amount of movement of the objective lens is often large in order to focus the sample. For this reason, the back focal point (pupil) of the objective lens deviates from the conjugate positional relationship between the light source and the aperture stop, and unevenness in brightness occurs in the incident illumination on the sample.

The present invention relates to an epi-illumination system comprising a stage for placing a sample, at least one objective lens, a revolver to which the objective lens is attached, a light source for epi-illuminating the sample through the objective lens, and a Koehler illumination system having an aperture stop. A coarse focusing mechanism that has a rotatable operation unit for coarse movement and coarsely moves the stage in the optical axis direction of the objective lens in response to an operation on the operation unit, and a fine movement has a rotatable operation unit use, comprising a fine movement focusing mechanism finely moving in the direction of the optical axis of the revolver of the objective lens by receiving an operation on the operation unit is attached objective lens, rotatable for fine movement The amount of movement of the stage in the optical axis direction according to the amount of rotation of the operation unit is set smaller than the amount of movement of the stage in the optical axis direction according to the amount of rotation of the rotatable operation unit for coarse movement. In observation, the coarse focusing mechanism moves the stage in the direction of the optical axis of the objective lens in response to an operation on the rotary operation unit for coarse movement, so that the position of the sample is substantially aligned with the in-focus position by the objective lens. Thereafter, the fine movement focusing mechanism is an upright microscope that receives an operation on a rotatable operation unit for fine movement and finely moves it in the optical axis direction of the objective lens so as to adjust the in-focus position of the objective lens to the sample. .

  The present invention makes it possible to observe a sample regardless of the thickness of the sample without minimizing the deviation of the conjugate relationship between the light source of the epi-illumination system, the aperture stop, and the back focal point of the objective lens and degrading the epi-illumination performance. An upright microscope can be provided.

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

  FIG. 1 shows a configuration diagram of an upright microscope. The microscope main body 1 is integrally formed with a base portion 2, a support portion 3 erected on the base portion 2, and an epi-illumination projection tube portion 4 provided on the upper portion of the support portion 3.

  The base unit 2 is provided with a focusing table 5 so as to be movable in the vertical direction (in the direction of arrow A). A stage 7 on which the sample 6 is placed is provided on the focusing table 5.

  An arm 8 is provided on the base portion 2 and the support portion 3 so as to be movable in the vertical direction (arrow B direction). The arm 8 is integrally formed with a guide portion 9 that guides movement in the vertical direction (arrow B direction) and an objective lens holding portion 10 that extends in the horizontal direction above the guide portion 9. . In addition, the guide part 9 of this arm 8 moves to an up-down direction (arrow B direction) with the guide member which is not shown in figure.

  The microscope main body 1 is provided with a lower limit stopper 11 and an upper limit stopper 12. The lower limit stopper 11 is provided at a position where it comes into contact with the lower end of the arm 8 and restricts the lowering of the arm 8 at the lower limit position.

  The upper limit stopper 12 is provided at a position where it comes into contact with the upper end of the arm 8 and restricts the rise of the arm 8 at the upper limit position.

  A revolver 13 is provided on the lower surface of the objective lens holding portion 10 of the arm 8. An objective lens 14 is attached to the revolver 13. Note that a plurality of objective lenses 14 are attached to the revolver 13, but one objective lens 14 is shown here. The objective lens 14 is disposed on the observation optical axis A.

  A light source box 16 constituting an epi-illumination system 15 is provided on the back surface of the microscope body 1. In the light source box 16, a light source 17 that emits a light beam for epi-illumination is provided. The epi-illumination system 15 is provided in the epi-illumination projection tube portion 4. A condensing lens 18, an aperture stop 19, a field stop 20, a light projection lens 21, and a half mirror 22 are provided on the illumination optical axis B of the epi-illumination system 15. Among these, the light source 17, the aperture stop 19, and the back focal point P of the objective lens 14 are in a conjugate relationship.

  The half mirror 22 is provided on the intersection of the observation optical axis A and the illumination optical axis B. The half mirror 22 bends the light beam emitted from the light source 17 to the objective lens 14 side and transmits the reflected light from the sample 6 to guide it to the lens barrel 23 side.

  The lens barrel 23 is provided on the upper surface of the epi-illumination projection tube portion 4. An eyepiece lens 24 is attached to the lens barrel 23. The eyepiece 24 is attached at a position where an image of the sample 6 can be observed.

  The base portion 2 of the microscope main body 1 is provided with a coarse focusing mechanism 25 that coarsely moves the stage 7 in the same direction as the observation optical axis A of the objective lens 14. The coarse focusing mechanism 25 includes the focusing table 5, and a rack 26 is provided on the side surface of the focusing table 5 in the same direction as the observation optical axis A, that is, in the same direction as the vertical movement of the stage 7. Is provided. An idler 27 meshes with the rack 26 and is rotatably provided. Further, the idler 27 is provided with a pinion 28 so as to be rotatable. On the rotational axis of the pinion 28, a coarse movement handle 29 as a coarse movement operation unit is attached.

  On the other hand, a fine focusing mechanism 30 that finely moves the revolver 13 with the objective lens 14 attached in the same direction as the observation optical axis A is provided on the base 2 of the microscope body 1. The fine movement focusing mechanism 30 has a rack 31 provided at the lower end of the arm 8. The rack 31 is provided in the same direction as the observation optical axis A, that is, in the same direction as the up and down direction of the objective lens 14. An idler 32 meshes with the rack 31 and is rotatably provided. Further, the idler 32 is provided with a pinion 33 so as to be rotatable. On the rotation shaft of the pinion 33, a fine movement handle 34 is attached as an operation section for fine movement.

  The idler 27 and pinion 28 of the coarse adjustment mechanism 25 and the idler 32 and pinion 33 of the fine adjustment mechanism 30 are the idler 32 and pinion 33 of the fine adjustment mechanism 30 and the idler 27 of the coarse adjustment mechanism 25. The rate of deceleration is set lower than that of the pinion 28. That is, the vertical movement of the objective lens 14 according to the rotation amount of the fine movement handle 34 of the fine movement focusing mechanism 30 is higher than the vertical movement amount of the stage 7 according to the rotation amount of the coarse movement handle 29 of the coarse movement focusing mechanism 25. The amount of movement in the direction is less. Specifically, the fine movement handle 34 and the coarse movement handle 29 are formed to have the same diameter. The diameter of the idler 32 of the fine movement focusing mechanism 30 is formed larger than the diameter of the idler 27 of the coarse movement focusing mechanism 25. The diameter of the idler 32 of the fine movement focusing mechanism 30 is smaller than the diameter of the pinion 28 of the coarse movement focusing mechanism 25.

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

  The light beam emitted from the light source 17 is incident on the half mirror 22 through the condenser lens 18, the aperture stop 19, the field stop 20, and the light projecting lens 21, and is lowered downward toward the objective lens 14 side by the half mirror 22. The sample 6 is bent and applied to the sample 6 as incident illumination light by the objective lens 14. The reflected light from the sample 6 enters the half mirror 22 through the objective lens 14, passes through the half mirror 22, and enters the eyepiece lens 24. Thereby, the image of the sample 6 can be observed.

  Next, the focusing operation for observing the image of the sample 6 will be described.

Rotation of the Sodoyo handle 29 for example in the arrow a ₁ direction, the pinion 28 with the rotation of the coarse handle 29 is rotated in the arrow a ₂ direction, the idler 27 by the rotation of the pinion 28 is rotated in the arrow a ₃ direction. The rotation of the idler 27 is transmitted to the rack 26, and the rack 26 rises in the same direction as the observation optical axis A. The semi-pedestal 5 focus with increasing rack 26 is raised in the arrow a ₄ direction, which is the observation optical axis A in the same direction. As a result, the stage 7 rises, and the sample 6 on the stage 7 approaches the objective lens 14.

Is rotated in a direction opposite to the Sodoyo handle 29 to the arrow a ₁ direction, the stage 7 is lowered, the sample 6 on the stage 7, away from the objective lens 14.

  Since the rotation amount of the coarse movement handle 29 is accelerated through the pinion 28 and the idler 27 and transmitted to the rack 26 of the focusing table 5, the movement of the focusing table 5 with respect to the rotation amount of the coarse movement handle 29. The amount increases. As a result, the stage 7 on which the sample 6 is placed by the rotation of the coarse movement handle 29 coarsely moves in the same direction as the observation optical axis A, and thus focusing by the coarse movement is possible.

On the other hand, when rotating the fine control handle 34, for example, in the arrow b ₁ direction, the pinion 33 along with the rotation of the fine control handle 34 is rotated in the arrow b ₂ direction, rotating the idler 32 is an arrow b ₃ direction by the rotation of the pinion 33 To do. The rotation of the idler 32 is transmitted to the rack 31 and the arm 8 provided with the rack 31 rises in the same direction as the observation optical axis A. The arm 8 objective attached to the revolver 13 with increasing 14 rises in an arrow b ₄ direction, which is the observation optical axis A in the same direction. As a result, the objective lens 14 moves away from the sample 6 on the stage 7.

When the fine movement handle 34 is rotated in the direction opposite to the arrow b ₁ direction, the arm 8 is lowered in the same direction as the observation optical axis A, so that the objective lens 14 is lowered and approaches the sample 6 on the stage 7. .

  Since the rotation amount of the fine movement handle 34 is decelerated via the pinion 33 and the idler 32 and transmitted to the rack 31 of the arm 8, the movement amount of the arm 8 with respect to the rotation amount of the fine movement handle 34 is reduced. . As a result, the objective lens 14 attached to the arm 8 through the revolver 13 by the rotation of the fine movement handle 34 finely moves in the same direction as the observation optical axis A, so that focusing by fine movement is possible.

  In order to acquire an observation image of the sample 6, first, the coarse movement handle 29 is rotated to coarsely move the stage 7 on which the sample 6 is placed in the same direction as the observation optical axis A. As a result, the position of the sample 6 is substantially matched with the in-focus position by the objective lens 14, that is, coarsely focused.

  Next, the fine movement handle 34 is rotated to finely move the objective lens 14 in the same direction as the observation optical axis A. Thereby, the in-focus position by the objective lens 14 fits on the sample 6, that is, finely adjusts.

  Thus, according to the first embodiment, the coarse focusing mechanism 25 that coarsely moves the stage 7 in the same direction as the observation optical axis A of the objective lens 14 and the revolver 13 to which the objective lens 14 is attached are observed. The fine movement focusing mechanism 30 that finely moves in the same direction as the optical axis A is provided separately. Accordingly, first, the position of the sample 6 is substantially aligned with the in-focus position by the objective lens 14 by the coarse adjustment mechanism 25, and then the in-focus position of the objective lens 14 is adjusted on the sample 6 by the fine adjustment mechanism 30. As a result, the amount of movement of the objective lens 14 can be reduced and the in-focus position of the objective lens 14 can be adjusted on the sample 6.

  Therefore, the amount of movement of the objective lens 14 is reduced, and the deviation of the conjugate relationship among the light source 17 of the epi-illumination system 15, the aperture stop 19 and the back focal point P of the objective lens 14 can be minimized. Even if the thickness of the sample 6 is thin or thick, this deviation in the conjugate relationship can be minimized regardless of the thickness. Thereby, the sample 6 is observed from the thin sample 6 to the thick sample 6 without deteriorating the performance of the epi-illumination of the sample 6 by the epi-illumination system 15, that is, the epi-illumination performance such as uneven illumination and insufficient peripheral light amount. it can.

  In the first embodiment, the fine movement focusing mechanism 30 decelerates according to the ratio of the gears of the pinion 33 and the idler 32. This deceleration is performed by using a decelerating mechanism such as a planetary gear. Also good.

  Next, a second embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 2 shows a configuration diagram of the upright microscope. In the upright microscope, the fine movement focusing mechanism 30 changes the ascending / descending direction of the arm 8 with respect to the rotation direction of the fine movement handle 34 to the opposite direction to that of the first embodiment.

  That is, the fine movement focusing mechanism 30 is rotatably provided with the idler 32 meshing with the rack 31 provided at the lower end portion of the arm 8. An idler 40 is engaged with the idler 32 so as to be rotatable. The idler 40 is provided with a pinion 33 so as to be rotatable. On the rotation shaft of the pinion 33, a fine movement handle 34 is attached as an operation section for fine movement.

  Thus, the diameter of the idler 40 interposed between the idler 32 and the pinion 33 is formed smaller than each diameter of the idler 32 and the pinion 33.

In the fine movement focusing mechanism 30, when the fine movement handle 34 is rotated in the direction of the arrow c _1, for example, the pinion 33 is rotated in the direction of the arrow c ₂ along with the rotation of the fine movement handle 34. idler 40 is rotated in the arrow _{c 3} direction and the idler 32 is rotated in the arrow _{c 4} direction by.

The rotation of the idler 33 is transmitted to the rack 31, the arm 8 provided with the rack 31 is lowered in the arrow C ₅ the direction of the observation optical axis A in the same direction. An objective lens mounted on the revolver 13 with descent of the arm 8 14 descends in the arrow C ₆ direction, which is the observation optical axis A in the same direction. Thereby, the objective lens 14 approaches the sample 6 on the stage 7.

Is rotated in the opposite direction to the fine movement handle 34 arrow C ₁ direction, the arm 8 is raised to the observation optical axis A in the same direction, the objective lens 14 moves away from the sample 6 on the stage 7 to rise.

  At this time, the rotation amount of the fine movement handle 34 is decelerated through the pinion 33, the idler 40, and the idler 32 and transmitted to the rack 31 of the arm 8, so that the fine movement handle 34 is used as in the first embodiment. The amount of movement of the arm 8 with respect to the amount of rotation of the handle 34 is reduced. As a result, the objective lens 14 attached to the arm 8 via the revolver 13 by the rotation of the fine movement handle 34 finely moves in the same direction as the observation optical axis A, so that it can be focused by the fine movement.

As described above, according to the second embodiment, since the idler 40 is interposed between the idler 32 and the pinion 33 in the fine movement focusing mechanism 30, the lifting / lowering direction of the arm 8 with respect to the rotation direction of the fine movement handle 34. Is opposite to the ascending / descending direction of the arm 8 of the first embodiment. For example, when the fine movement handle 34 is rotated in the direction of the arrow C ₁ , the objective lens 14 approaches the sample 6, while the coarse movement handle 29 is rotated in the direction of the arrow a _{1 in the} same direction as the rotation direction of the fine movement handle 34. However, the objective lens 14 can be brought close to the sample 6.

  In this focusing operation, in addition to the effect of the first embodiment, the distance between the objective lens 14 and the sample 6 with respect to the respective rotation directions of the fine movement handle 34 and the coarse movement handle 29 is changed. The direction of change, that is, the direction of approaching or leaving can be made the same, and it becomes easy to use for a user who is accustomed to the operation of a general microscope.

  Next, a third embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 3 shows a configuration diagram of the upright microscope. This upright microscope is provided with a coarse movement handle 29 and a fine movement handle 34 on one axis.

  The coarse focusing mechanism 25 includes a rack 50 provided on the focusing table 5. The rack 50 is provided on the surface of the focusing table 5 facing the arm 8 along the same direction as the observation optical axis A. An idler 51 is meshed with the rack 50 and is rotatably provided. Further, the idler 51 is provided with an idler 52 so as to be rotatable. The idlers 51 and 52 are formed to have substantially the same diameter, and gears are provided on the outer peripheral surfaces thereof.

  On the other hand, an idler 53 is engaged with a rack 31 constituting the fine movement focusing mechanism 30 so as to be rotatable. A gear is provided on the outer peripheral surface of the idler 53. A pinion 54 meshes with the idler 53 and is rotatably provided. A pinion 55 is provided on the rotation axis of the pinion 54. The pinion 55 meshes with the idler 52 of the coarse movement focusing mechanism 25. Note that the diameter of the pinion 54 is smaller than the diameter of the idler 53. The diameter of the pinion 55 is formed larger than the diameter of the pinion 54.

  On the rotation shafts of the pinions 54 and 55, handles 56 and 57 for coarse movement and fine movement as operation units are attached.

  FIG. 4 is a specific upper cross-sectional view of the coarse adjustment mechanism 25 and the fine adjustment mechanism 30. On the bottom surface of the base portion 2, first and second holding portions 58 and 59 are provided between the coarse adjustment mechanism 25 and the fine adjustment mechanism 30, and between the coarse adjustment mechanism 25 and the fine adjustment mechanism. 30 are provided in parallel to each other along the facing direction.

  Each shaft 60 and 61 is provided in the first holding portion 58. Conical depressions are provided at the tip portions of the shafts 60 and 61, respectively. The balls 62 and 63 are fitted in the recesses at the tip portions of the shafts 60 and 61, respectively. However, the idlers 51 and 52 are rotatably supported at the tip portions of the shafts 60 and 61 via the balls 62 and 63, respectively.

  These idlers 51 and 52 are also rotatably supported by the second holding portion 59, respectively. That is, each idler 51, 52 is provided with each conical recess, and each ball 64, 65 is fitted in each recess. The second holding portion 59 is provided with lids 66 and 67 for supporting the idlers 51 and 52, respectively. Conical depressions are provided on the lids 66 and 67 on the side of the idlers 51 and 52, respectively. Thereby, the idlers 51 and 52 are rotatably provided between the lids 66 and 67 via the balls 64 and 65, respectively.

The shafts 60 and 61, the balls 62 and 63, and the balls 64 and 65 are provided on the rotation axes R ₁ and R _{2 of the} idlers 51 and 52, respectively.

  A third holding portion 68 is provided on the bottom surface of the base portion 2 on the fine movement focusing mechanism 30 side in the second holding portion 59. An idler 53 is rotatably provided between the second holding part 59 and the third holding part 68. That is, the third holding portion 68 is provided with a shaft 69. A conical depression is provided at the tip of the shaft 69. A ball 70 is fitted in the recess at the tip of the shaft 69. However, the idler 53 is rotatably supported at the tip of the shaft 70 via the ball 70.

  The idler 53 is also rotatably supported by the second holding part 59. That is, the idler 53 is provided with a conical recess, and the ball 71 is fitted in the recess. The second holding part 59 is provided with a lid 72 for supporting the idler 53. A conical depression is provided on the lid 72 on the idler 53 side. Thereby, the idler 53 is rotatably provided between the lid 72 and the ball 71.

The shaft 69 and the balls 70 and 71 are respectively provided on the rotation shaft _{R 3} idler 53.

  A cylindrical coarse shaft 73 is rotatably supported between the base portion 2 and the first holding portion 58. A pinion 55 is fixed to one end side of the coarse motion shaft 73 (inside the base portion 2). Further, a projection 74 is provided on the outer peripheral surface of the coarse movement shaft 73 on the other end side (the outside of the base portion 2). On the other end side of the coarse movement shaft 73, a coarse movement handle 56 is provided. A concave portion is provided on the coarse motion shaft 73 in the coarse motion handle 56, and a coarse motion shaft set screw 75 is screwed to the coarse motion shaft 73 protruding into the concave portion. Thereby, the coarse movement handle 56 is fixed to the coarse movement shaft 73 by the protrusion 74 and the coarse movement shaft set screw 75.

  A fine movement shaft 76 is rotatably provided in the cylindrical portion of the coarse movement shaft 73. One end of the fine movement shaft 76 extends outside the coarse movement handle 56, and the other end is rotatably supported by the second holding portion 59. A fine movement handle 57 is attached to one end side of the fine movement shaft 76. A spring washer 77 is sandwiched between the fine movement handle 57 and the coarse movement handle 56. The spring washer 77 has an elastic force in the same direction as the axial direction of the fine movement shaft 76 and is in contact with both the fine movement handle 57 and the coarse movement handle 56. A pinion 54 is fixed to the other end side of the fine movement shaft 76 by tightening a screw 78.

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

When the coarse motion handle 56 is rotated, the coarse motion shaft 73 is rotated by the rotation of the coarse motion handle 56. For example, when the coarse movement handle 56 is rotated in the direction of the arrow d ₁ as shown in FIG. 5, the coarse movement shaft 73 is also rotated in the same arrow d ₁ direction. Since the pinion 55 with the rotation of the Sodojiku 73 is rotated in the same arrow d ₁ direction, the idler 52 by the rotation of the pinion 55 is rotated in the arrow d ₂ direction and rotates idler 51 in the arrow d ₃ directions .

The rotation of the idler 51 is transmitted to the rack 50, and the rack 50 rises in the same direction as the observation optical axis A. The semi-pedestal 5 focus with increasing rack 50 is raised in the arrow d ₄ direction, which is the observation optical axis A in the same direction. As a result, the stage 7 rises, and the sample 6 on the stage 7 approaches the objective lens 14.

When the coarse movement handle 56 arrow d ₁ direction is rotated in the opposite direction, since Sodojiku 73 is the arrow d ₁ direction rotate in opposite directions, a pinion 55, idler 52 and the idler 51, and each of the above operation Rotates in the opposite direction. Thereby, the rotation of the idler 51 is transmitted to the rack 50, so that the rack 50 is lowered in the same direction as the observation optical axis A. As the rack 50 is lowered, the focusing table 5 is lowered in the same direction as the observation optical axis A, so that the sample 6 on the stage 7 is separated from the objective lens 14.

On the other hand, when the fine movement handle 57 is rotated, the fine movement shaft 76 is rotated by the rotation of the fine movement handle 57. For example, when the fine movement handle 57 is rotated in the direction of the arrow e ₁ as shown in FIG. 6, the fine movement shaft 76 is also rotated in the same arrow e ₁ direction. Since the pinion 54 with the rotation of the fine motion shaft 76 is rotated in the same arrow e ₁ direction, idler 53 by the rotation of the pinion 54 is rotated in the arrow e ₂ directions. The rotation of the idler 53 is transmitted to the rack 31 and the arm 8 provided with the rack 31 rises in the same direction as the observation optical axis A. The arm 8 objective attached to the revolver 13 with increasing 14 rises in an arrow e ₄ direction, which is the observation optical axis A in the same direction. As a result, the objective lens 14 moves away from the sample 6 on the stage 7.

Rotating the fine control handle 57 in the direction opposite to the arrow e ₁ direction, the arm 8 is lowered to the observation optical axis A in the same direction, the objective lens 14 approaches the sample 6 on the stage 7 descends .

  As described above, according to the third embodiment, the fine movement shaft 76 is rotatably provided in the cylindrical portion of the coarse movement shaft 73, and the coarse movement handle 56 and the fine movement handle 57 are arranged on the same axis. In addition to the effects of the first embodiment, it is possible to reduce the amount of movement of the operator's hand when switching between the coarse motion focus and the fine motion focus, thereby improving the operability.

  Note that the raising / lowering direction of the focusing table 5 with respect to the rotation direction of the coarse movement handle 56 and the raising / lowering direction of the arm 8 with respect to the rotation direction of the fine movement handle 57 can be changed by changing the number of idlers or the like. Further, if the coarse movement handle 56 and the fine movement handle 57 are arranged at positions where the coarse movement focusing mechanism 25 and the fine movement focusing mechanism 30 can be screwed with each idler or pinion, for example, the upper part of the base unit 2 or It can be changed to any position such as the front side.

  Next, a fourth embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 7 shows a block diagram of an upright microscope. In this upright microscope, the coarse movement handles 56 and 93 and the fine movement handles 57 and 96 are respectively provided on the left and right sides of the base portion 2.

  On the bottom surface of the base portion 2, a first holding unit 80, a second holding unit 81, and a third holding unit 82 are provided between the coarse focusing mechanism 25 and the fine focusing mechanism 30, and The coarse moving focusing mechanism 25 and the fine moving focusing mechanism 30 are provided in parallel to each other along the facing direction.

  The first holding unit 80 is provided with a shaft 60. A conical depression is provided at the tip of the shaft 60. A ball 62 is fitted in the recess at the tip of the shaft 60. However, the idler 51 is rotatably supported at the tip of the shaft 60 via the ball 62.

  The idler 51 is also rotatably supported by the second holding portion 81. That is, the idler 51 is provided with a conical recess, and the ball 64 is fitted in the recess. The second holding portion 81 is provided with a lid 66 for supporting the idler 51. A conical recess is provided on the idler 51 side of the lid 66. Thereby, the idler 51 is rotatably provided between the lid 66 and the ball 64.

The shaft 60, the balls 62 and 64 are respectively provided on the rotation shaft _{R 4} idler 51.

  A shaft 83 is provided between the first holding unit 80 and the third holding unit 82. An idler shaft 84 is rotatably supported on the shaft 83. On the left and right sides on the outer periphery of the idler shaft 84, idlers 85 and 86 are provided, respectively. Of these, the idler 85 meshes with the idler 51.

  A cylindrical coarse motion shaft 87 is rotatably supported between the base portion 2 and the first holding portion 80. A pinion 88 is fixed to one end side of the coarse movement shaft 87 (inside the base portion 2). The pinion 88 meshes with the idler 85. Further, a protrusion 89 is provided on the outer peripheral surface of the coarse movement shaft 87 on the other end side (external side of the base portion 2). On the other end side of the coarse movement shaft 87, one coarse movement handle 56 is provided. A concave portion is provided on the coarse motion shaft 87 in the one coarse motion handle 56, and a coarse motion shaft set screw 75 is screwed to the coarse motion shaft 87 protruding into the concave portion. Thereby, one coarse movement handle 56 is fixed to the coarse movement shaft 87 by the projection 89 and the coarse movement shaft set screw 75.

  Further, a cylindrical coarse movement shaft 90 is rotatably supported between the base portion 2 and the third holding portion 82. The coarse movement shaft 90 is provided on the same axis as the coarse movement shaft 87. A pinion 91 is fixed to one end side of the coarse motion shaft 90 (inside the base portion 2). The pinion 91 is engaged with the idler 86. Further, a protrusion 92 is provided on the outer peripheral surface of the coarse movement shaft 90 on the other end side (external side of the base portion 2). On the other end side of the coarse movement shaft 90, the other coarse movement handle 93 is provided. A concave portion is provided on the coarse movement shaft 90 of the other coarse movement handle 93, and a coarse movement shaft set screw 94 is screwed to the coarse movement shaft 90 protruding into the concave portion. As a result, the other coarse movement handle 93 is fixed to the coarse movement shaft 90 by the protrusion 92 and the coarse movement shaft set screw 94.

  In each hollow portion of the coarse motion shaft 87 and the coarse motion shaft 90, a fine motion shaft 95 is rotatably provided. The fine movement shaft 95 has one end extending to the outside of one coarse movement handle 56 and the other end extending to the outside of the other coarse movement handle 93.

  One of the fine movement shafts 57 is attached to one end side of the fine movement shaft 95. A spring washer 77 is sandwiched between the fine movement handle 57 and the coarse movement handle 56. The spring washer 77 has an elastic force in the same direction as the axial direction of the fine movement shaft 95 and is in contact with both the fine movement handle 57 and the coarse movement handle 56.

  On the other end side of the fine movement shaft 95, the other fine movement handle 96 is attached. On the other end side of the fine movement shaft 95, a concave fitting portion 97 is provided. The other fine movement handle 96 is fixed to the fine movement shaft 95 by tightening a screw 98 and fitting the tip of the screw 98 into the fitting portion 97.

  A fourth holding part 99 and a fifth holding part 100 are provided in parallel to each other on the fine movement focusing mechanism 30 side on the bottom surface of the base part 2.

  The fourth holding part 99 is provided with a shaft 101. A conical depression is provided at the tip of the shaft 101. A ball 102 is fitted in the recess at the tip of the shaft 101. However, the idler 53 is rotatably supported at the tip of the shaft 101 via the ball 102.

  The idler 53 is also rotatably supported by the fifth holding unit 100. That is, the idler 53 is provided with a conical recess, and the ball 103 is fitted in the recess. The fifth holding unit 100 is provided with a lid 104 for supporting the idler 53. A conical recess is provided on the idler 53 side of the lid 104. Thereby, the idler 53 is rotatably provided between the lid 104 and the ball 103.

The shaft 101, the ball 102 and 103 are respectively provided on the rotation shaft _{R 5} of the idler 53.

  A pinion 54 is provided at the center of fine movement shaft 95, that is, between pinions 88 and 91. The pinion 54 is fixed to the fine movement shaft 95 with a screw 105. The pinion 54 meshes with the idler 53.

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

  When one or both of the coarse movement handles 56 and 93 are rotated, the coarse movement shafts 87 and 90 are rotated by the rotation of the coarse movement handles 56 and 93. The rotations of the coarse movement shafts 87 and 90 are transmitted from the pin-ons 88 and 91 to the idler 51 through the idler shafts 84 provided with the idlers 85 and 86, respectively.

  In this case, since each coarse motion shaft 87, 90 is connected via each pin-on 88, 91 and idler shaft 84 provided with each idler 85, 86, only one coarse motion handle 56 or 93 is provided. , The coarse movement shafts 87 and 90 are rotated in conjunction with each other.

  The rotation of the idler 51 is transmitted to the rack 50, and the rack 50 moves up and down in the same direction as the observation optical axis A. As the rack 50 moves up and down, the focusing table 5 moves up and down in the same direction as the observation optical axis A. Thereby, the stage 7 moves up and down, and the sample 6 on the stage 7 approaches or leaves the objective lens 14.

  On the other hand, when one or both of the fine movement handles 57 and 96 are rotated, the fine movement shaft 95 is rotated by the rotation of the fine movement handles 57 and 96. Since the pinion 54 rotates together with the rotation of the fine movement shaft 95, the idler 53 rotates by the rotation of the pinion 54. The rotation of the idler 53 is transmitted to the rack 31, and the arm 8 provided with the rack 31 moves up and down in the same direction as the observation optical axis A. The objective lens 14 attached to the revolver 13 moves up and down in the same direction as the observation optical axis A as the arm 8 moves up and down. As a result, the objective lens 14 moves away from or approaches the sample 6 on the stage 7.

  As described above, according to the fourth embodiment, the coarse movement handles 56 and 93 and the fine movement handles 57 and 96 are provided on the left and right sides of the base portion 2, respectively. In addition to the effects of the above, the operator uses the coarse movement handles 56 and 93 and the fine movement handles 57 and 96 on the left and right sides of the microscope main body 1 toward the front side. The operability for the operator can be improved.

  Coarse focusing and fine focusing can be performed using the coarse movement handles 56 and 93 and the fine movement handles 57 and 96 on the left and right sides, so that it can easily cope with, for example, the dominant hand of the operator, and the microscope is installed. It can cope with restrictions of the surrounding environment.

  The coarse focusing and fine focusing can be performed, for example, by operating both the coarse movement handles 56 and 93 and the both fine movement handles 57 and 96 with both hands. For example, even when the mass of the sample 6 is large, the coarse movement focusing is performed. The operations of the coarse adjustment handles 56 and 93 can be easily performed with a small rotational force. Accordingly, the coarse motion handles 56 and 93 can be easily operated with a small rotational force when the stage 7 is moved up and down.

  Next, a fifth embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 8 shows a configuration diagram of the upright microscope. This upright microscope is motorized for fine focusing. The arm 110 is provided so as to be movable up and down in the same direction as the observation optical axis A by a guide portion (not shown) with respect to the incident light projection tube portion 4. The arm 110 is formed by integrating an objective lens holding part 110a and a movement support part 110b. A revolver 13 to which the objective lens 14 is attached is provided on the lower surface of the objective lens holding portion 110a. The movement support part 110b is provided so as to be movable up and down in the same direction as the observation optical axis A by a guide part (not shown) with respect to the incident light projection tube part 4. A rack 111 is provided in the movement support portion 110b in the same direction as the observation optical axis A.

  The incident light projection tube portion 4 is provided with a motor 112 as a driving means, and a pinion 113 is provided on a rotation shaft of the motor 112. The pinion 113 meshes with a rack 111 provided on the arm 110. Therefore, when the motor 112 is driven, the rotation of the rotation shaft of the motor 112 is transmitted to the rack 111 provided on the arm 110 via the pinion 113, whereby the arm 110 is rotated in the rotation direction of the rotation shaft of the motor 112. Accordingly, it moves up and down in the same direction as the observation optical axis A. The motor 112 is electrically connected to the control unit 115 via the cable 114.

  On the other hand, the focusing table 5 is provided with racks 26a and 26b. These racks 26a and 26b are rotatably provided with meshed idlers 116a and 116b, respectively. These idlers 116a and 116b are rotatably provided with their respective pinions 117a and 117b engaged with each other. A pinion 118 is provided coaxially with the axes of these pinions 117a and 117b. The pinion 118 has a diameter smaller than that of the pinion 117. An idler 119 is engaged with the pinion 118 so as to be rotatable.

  FIG. 9 shows a specific upper cross-sectional view of the coarse adjustment mechanism 25 in the microscope. The same parts as those in FIG. 7 are denoted by the same reference numerals, and detailed description thereof is omitted. A first holding part 120 and a second holding part 121 are provided in parallel to each other on the bottom surface of the base part 2. One coarse motion shaft 87 is rotatably provided in the first holding portion 120, and the other coarse motion shaft 90 is rotatably provided in the second holding portion 121. In each hollow portion of the coarse motion shaft 87 and the coarse motion shaft 90, a fine motion shaft 95 is provided so as to be rotatable and rotatable.

  A pinion 117a is provided at the opposite end of the coarse movement shaft 87 where the coarse movement handle 56 is provided, and an opposite end of the other coarse movement shaft 90 where the coarse movement handle 93 is provided. A pinion 117b is provided.

  The idlers 116 a and 116 b are integrally provided on the idler shaft 122. These idlers 116a and 116b mesh with the racks 26a and 26b, respectively, and mesh with the pinions 117a and 117b. The idler shaft 122 is provided with a hollow portion, and a shaft 123 is rotatably provided in the hollow portion. The shaft 123 is rotatably provided between the first holding unit 120 and the second holding unit 121.

  A pinion 118 is fixed to the center of the fine movement shaft 95 with a screw 118a. A third holding part 124 is provided on the bottom surface of the base part 2. A rotary encoder 125 as a fine movement information detection unit is fixed to the third holding unit 124. An idler 119 is fixed to the shaft 126 of the rotary encoder 125 with a screw 119a. The idler 119 meshes with the pinion 118.

The rotary encoder 125 detects fine movement operation information according to the rotation amount of the idler 119, that is, the operation amounts of the fine movement handles 57 and 96, and outputs, for example, a pulse signal as the detection signal. The rotary encoder 125 also outputs a signal indicating the rotation direction of the fine movement handles 57, 96, that is, the raising / lowering direction of the objective lens 14. The rotary encoder 125 is electrically connected to the control unit 115 via the cable K.

  The control unit 115 receives the pulse signal output from the rotary encoder 125, counts the pulse signal, obtains fine movement operation information, and sends a drive control signal to the motor 112 based on the fine movement operation information. To do.

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

  When one or both of the coarse movement handles 56 and 93 are rotated, the coarse movement shafts 87 and 90 are rotated by the rotation of the coarse movement handles 56 and 93. The rotations of the coarse movement shafts 87 and 90 are transmitted from the pin-ons 117a and 117b to the racks 26a and 26b via the idlers 116a and 116b, respectively. In this case, since each coarse motion shaft 87, 90 is connected to each pin-on 117a, 117b via each idler 116a, 116b, by rotating only one coarse motion handle 56 or 93, both The coarse movement shafts 87 and 90 rotate in conjunction with each other.

  Thereby, the rotation of the idlers 116a and 116b is transmitted to the racks 26a and 26b, so that the racks 26a and 26b are moved up and down in the same direction as the observation optical axis A. The focusing table 5 moves up and down in the same direction as the observation optical axis A as the racks 26a and 26b move up and down. Thereby, the stage 7 moves up and down, and the sample 6 on the stage 7 approaches or leaves the objective lens 14.

  On the other hand, when one or both of the fine movement handles 57 and 96 are rotated, the fine movement shaft 95 is rotated by the rotation of the fine movement handles 57 and 96. The pinion 118 is rotated by the rotation of the fine movement shaft 95, and the idler 119 is further rotated.

The rotary encoder 125 detects fine movement operation information according to the rotation amount of the idler 119, that is, the operation amounts of the fine movement handles 57 and 96, and outputs, for example, a pulse signal as the detection signal. At this time, the rotary encoder 125 also outputs a signal indicating the rotation direction of the fine movement handles 57 and 96, that is, the raising and lowering direction of the objective lens 14. This pulse signal is sent to the control unit 115 through the cable K.

  The control unit 115 receives the pulse signal output from the rotary encoder 125, counts the pulse signal, obtains the fine movement distance of the objective lens 14 in the optical axis direction A, and obtains the elevation direction of the objective lens 14. Then, a drive control signal including the fine movement distance and the raising / lowering direction of the objective lens 14 is sent to the motor 112.

  As a result, the motor 112 rotates in the rotation direction corresponding to the raising / lowering direction of the objective lens 14 by the rotation amount corresponding to the fine movement distance of the objective lens 14. As a result, the pinion 113 is rotated by the rotation of the motor 112, and the rotation of the pinion 113 is transmitted to the rack 111. As a result, the rack 111 moves up and down in the same direction as the observation optical axis A, so that the arm 110 also moves up and down in the same direction as the observation optical axis A as the rack 111 moves up and down. However, the objective lens 14 moves away from or approaches the sample 6 on the stage 7.

  As described above, according to the fifth embodiment, the arm 110 provided with the revolver 13 to which the objective lens 14 is attached is provided on the epi-illumination projection tube unit 4 so that it can be moved up and down. According to the fine movement operation information, the rotary encoder 125 detects the fine movement operation information, and the control unit 115 drives and controls the motor 112 based on the fine movement operation information to finely move the arm 110 in the optical axis direction A of the objective lens 14.

  Thereby, in addition to the effect of the first embodiment, each of the coarse motion handles 56 and 93 can be disposed on the front side of the base portion 2, that is, on the front side of the microscope. That is, the fine movement handles 57 and 96 are arranged coaxially with the coarse movement handles 56 and 93 by providing the fine movement shaft 95 in the hollow portion of the coarse movement shafts 87 and 90. For example, as shown in FIG. 1, the coarse movement handles 56 and 93 can be provided at different positions. However, if only the coarse movement handles 56 and 93 are arranged on the front side of the base portion 2, for example, when the stage 7 is large, the operability of the coarse movement handles 56 and 93 can be improved.

  Since the arm 110 is provided in the incident light projection tube portion 4 and the arm 110 is moved up and down by driving the motor 112, the guide portion of the arm 110 and the motor 112 can be provided near the objective lens 14. It can be made smaller than the size of the arm 8 in each of the above embodiments. Thereby, the arm 110 can be reduced in weight, the load applied to the fine movement focusing mechanism can be reduced, and the durability of the fine movement focusing mechanism can be improved. Furthermore, since the arm 110 and the like can be made smaller, accuracy errors caused by tolerances of parts such as the arm 110 can be kept small, the movement accuracy of the arm 110 when performing fine movement focusing can be increased, and a highly reliable microscope. Can be.

  Next, a sixth embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 8 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 10 shows a configuration diagram of an upright microscope. In this upright microscope, the epi-illumination projection tube portion 4 is detachably provided to the microscope body 1. That is, the incident light projection tube mounting surface 130 is provided on the bottom surface of the incident light projection tube portion 4 on the light source box 16 side. A projecting tube side connector 131 is provided on the incident light projecting tube mounting surface 130. The projection tube side connector 131 and the motor 112 are electrically connected via a cable 132.

  On the other hand, a microscope body mounting surface 133 is provided on the upper portion of the support portion 3 in the microscope body 1. The microscope body attachment surface 133 and the epi-illumination projection tube attachment surface 130 can be attached to and detached from each other by a positioning attachment / detachment mechanism (not shown), and are positioned and fixed at a predetermined position. For example, a concave fitting portion 134 is provided on the microscope main body attachment surface 133. The fitting portion 134 is formed in a shape that fits with the connector 131, for example. A main body side connector 135 is provided inside the fitting portion 134. The main body side connector 135 is electrically connected to the light emitting tube side connector 131. The main body side connector 135 and the control unit 115 are electrically connected by a cable 136.

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

  The epi-illumination projection tube portion 4 is attached to the microscope main body 1. In this case, the epi-illumination projection tube portion 4 is positioned and fixed at a predetermined position by a positioning attachment / detachment mechanism provided on the microscope body attachment surface 133 and the epi-illumination projection tube attachment surface 130. At the same time, the projection tube side connector 131 is fitted into the fitting portion 134, and the projection tube side connector 131 and the main body side connector 135 are electrically connected.

  As described above, according to the sixth embodiment, the incident light projection tube portion 4 is detachably provided to the microscope main body 1, and the projection tube side connector 131 and the main body are provided between the control portion 115 and the motor 112. In addition to the effects of the fifth embodiment, the epi-illumination projection tube portion 4 can be easily replaced in addition to the effects of the fifth embodiment. When a failure occurs in the tube portion 4, it can be replaced with an incident light projection tube portion 4 having no failure. The incident light projection tube portion 4 in which the failure has occurred can be removed from the microscope body 1 and repaired. Therefore, it is excellent in dealing with maintenance. It is also possible to replace the epi-illumination projection tube portion 4 with an epi-illumination projection tube portion having another optical function.

  Next, a seventh embodiment of the present invention will be described with reference to the drawings. The same parts as those in FIG. 8 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 11 shows a configuration diagram of an upright microscope. In this upright microscope, both the fine focusing and coarse focusing operations are motorized. Here, the motor 112 is referred to as a first motor 112.

  The idler shaft 122 having the idlers 116 a and 116 b is fixed to the shaft 123. A second motor 140 is connected to the shaft 123.

  An operation panel 141 is provided on the front surface of the base portion 2. On the operation panel 141, there are provided switches, buttons, and the like for operating the coarse movement focusing operation and the fine movement focusing operation. For example, the operation panel 141 includes coarse movement focusing switches and buttons for instructing to move the stage 7 up and down, and fine movement focusing switches and buttons for instructing to raise and lower the objective lens 14. Is provided. Alternatively, on the operation panel 141, a coarse-focusing selection switch for instructing to raise and lower the stage 7, a fine-movement focusing selection switch for instructing to raise and lower the objective lens 14, and the stage 7 or the objective lens 14 are raised. An up switch and a down switch for lowering the stage 7 or the objective lens 14 may be provided.

  The second motor 140 and the control unit 142 are electrically connected by a cable 143, and the operation panel 141 and the control unit 142 are also electrically connected by a cable 144.

  The control unit 142 receives the operation instruction from the operation panel 141, for example, the coarse movement focusing instruction for raising or lowering the stage 7, or the fine movement focusing instruction for raising or lowering the objective lens 14, or the first motor 112 or the first motor 112. Each drive control signal is sent to one or both of the two motors 140. In this case, if the control unit 142 continues to push, for example, each switch or button for coarse movement focusing on the operation panel 141 or each switch or button for fine movement focusing, the first motor 112 or Each drive control signal is continuously sent to one or both of the second motors 140.

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

  For example, when an instruction to raise or lower the stage 7 is performed on each switch, button, etc. for coarse movement focusing on the operation panel 141, this coarse movement focusing instruction is sent to the control unit 142 through the cable 143. .

  The control unit 142 sends a drive control signal to the second motor 140 when receiving a coarse movement focusing instruction to raise or lower the stage 7 from the operation panel 141. In this case, when the rough movement focusing switches and buttons on the operation panel 141 are continuously pressed, the control unit 142 continues to send a drive control signal to the second motor 140.

  As a result, the second motor 140 is driven to rotate, so that this rotation is transmitted to the shaft 123 and the idlers 116a and 116b rotate. Since the rotations of the idlers 116a and 116b are transmitted to the racks 26a and 26b, the racks 26a and 26b move up and down in the same direction as the observation optical axis A. The focusing table 5 moves up and down in the same direction as the observation optical axis A as the racks 26a and 26b move up and down. Thereby, the stage 7 moves up and down, and the sample 6 on the stage 7 approaches or leaves the objective lens 14.

  On the other hand, when an operation for raising or lowering the objective lens 14 is performed with respect to each switch, button, etc. for fine movement focusing on the operation panel 141, the fine movement focusing instruction is sent to the control unit 142 through the cable 143. It is done.

  When the control unit 142 receives a fine movement focusing instruction to raise or lower the objective lens 14 from the operation panel 141, the control unit 142 sends a drive control signal to the first motor 112. In this case, when the switches and buttons for fine movement focusing on the operation panel 141 are continuously pressed, the control unit 142 continues to send a drive control signal to the first motor 112.

  As a result, the first motor 112 is driven to rotate. The pinion 113 is rotated by the rotation of the first motor 112, and the rotation of the pinion 113 is transmitted to the rack 111. As a result, the rack 111 moves up and down in the same direction as the observation optical axis A, so that the arm 110 also moves up and down in the same direction as the observation optical axis A as the rack 111 moves up and down. However, the objective lens 14 moves away from or approaches the sample 6 on the stage 7.

  As described above, according to the seventh embodiment, the stage 7 is automatically raised or lowered by the coarse or fine movement instruction from the operation panel 141, or the objective lens 14 is automatically raised or lowered. For example, by simply pressing each switch, button or the like on the operation panel 141, coarse focusing and fine focusing can be performed, and the operability can be improved.

  Further, for example, each switch, each button, etc. on the operation panel 141 can be replaced with each handle for coarse movement and fine movement, so that each handle for coarse movement and fine movement can be eliminated, and the rotary encoder 125 is also provided. It can be lost.

  In addition, this invention is not limited to said each embodiment, You may deform | transform as follows.

  For example, in each of the above-described embodiments, for example, the epi-illumination light projecting tube portion 4 that is close to the arms 8 and 110 for fine focusing is provided with a scale, and each arm 8 and 110 is provided with an index such as an arrow, You may be able to recognize the amount of movement when finely focusing.

  Further, the epi-illumination projection tube portion 4 may be configured as a separate unit separated from the support portion 3 of the microscope main body 1 so as to be detachable from the microscope main body 1.

  Similarly to the incident light projection tube portion 4 shown in FIG. 10, the incident light projection tube portion 4 shown in FIG. 11 is provided with a light emission tube side connector 131 and a main body side connector 135 so as to be detachable from the microscope main body 1. It may be provided.

Another feature of the present invention will be described.
In the present invention, the handle for coarse movement and the handle for fine movement have the same rotation direction for coarse movement of the stage in the vertical direction and rotation direction for fine movement of the revolver in the vertical direction. This is an upright microscope characterized by the above.
In the present invention, the coarse movement handle and the fine movement handle may be configured such that a rotation direction for coarse movement of the stage in the vertical direction and a rotation direction for fine movement of the revolver in the vertical direction are opposite to each other. This is an upright microscope characterized by being.
In the present invention, the coarse movement focusing mechanism accelerates and transmits the rotation amount of the coarse movement handle to the stage, and the fine movement focusing mechanism decelerates the rotation amount of the fine movement handle. The upright microscope is characterized by transmitting to the revolver to which the objective lens is attached.
The present invention is the upright microscope, wherein the fine movement information detection unit is a rotary encoder.

The present invention includes a microscope main body including at least the stage, the coarse movement focusing mechanism, the coarse movement information detection unit, and the control unit, at least one objective lens, the revolver, the epi-illumination system, and the motor. An epi-illumination unit, and a connector for electrically connecting or disconnecting the control unit and the motor, wherein the epi-illumination unit is detachably provided to the microscope body. It is an upright microscope.
In the present invention, the epi-illumination system includes a Koehler illumination system including a light source that emits at least the luminous flux for the epi-illumination and an aperture stop, and the back focal point of the objective lens, the light source, and the aperture stop are conjugate. It is an upright microscope characterized by having each positional relationship.

The block diagram which shows 1st Embodiment of the upright microscope which concerns on this invention. The block diagram which shows 2nd Embodiment of the upright microscope which concerns on this invention. The block diagram which shows 3rd Embodiment of the upright microscope which concerns on this invention. FIG. 3 is a specific upper cross-sectional view of a coarse focusing mechanism and a fine focusing mechanism in the microscope. The figure which shows operation | movement of the coarse movement focusing mechanism in the microscope. The figure which shows operation | movement of the fine movement focusing mechanism in the microscope. The block diagram which shows 4th Embodiment of the upright microscope which concerns on this invention. The block diagram which shows 5th Embodiment of the upright microscope which concerns on this invention. The specific upper cross-sectional view of the coarse focusing mechanism in the microscope. The block diagram which shows 6th Embodiment of the upright microscope which concerns on this invention. The block diagram which shows 7th Embodiment of the upright microscope which concerns on this invention.

Explanation of symbols

  1: microscope main body, 2: base portion, 3: support portion, 4: incident light projection tube portion, 5: focusing table, 6: sample, 7: stage, 8: arm, 9: guide portion, 10: objective lens Holding unit, 11: lower limit stopper, 12: upper limit stopper, 13: revolver, 14: objective lens, 15: epi-illumination system, 16: light source box, 17: light source, 18: condenser lens, 19: aperture stop, 20: Field stop, 21: projector lens, 22: half mirror, 23: barrel, 24: eyepiece, 25: coarse focusing mechanism, 26: rack, 26a, 26b: rack, 27: idler, 28: pinion, 29: Coarse movement handle, 30: Fine movement focusing mechanism, 31: Rack, 32: Idler, 33: Pinion, 34: Fine movement handle, 40: Idler, 50: Rack, 51: Idler, 52: Idler, 53: Idler 5 : Pinion, 55: pinion, 56: coarse movement handle, 57: fine movement handle, 58: first holding section, 59: second holding section, 60, 61: shaft, 62, 63: ball, 64, 65 : Ball, 66, 57: Lid, 68: Third holding portion, 69: Shaft, 70: Ball, 71: Ball, 72: Lid, 73: Coarse motion shaft, 74: Projection, 75: Coarse motion shaft stopper Screw: 76: Fine movement shaft, 77: Spring washer, 78: Screw, 80: First holding portion, 81: Second holding portion, 82: Third holding portion, 83: Shaft, 84: Idler shaft, 85 86: Idler, 87: Coarse shaft, 88: Pinion, 89: Protrusion, 90: Coarse shaft, 91: Pinion, 92: Protrusion, 93: Coarse handle, 94: Coarse shaft screw, 95 : Fine movement shaft, 96: Fine movement handle, 97: Fitting portion, 98: Screw, 99: Fourth Holding unit, 100: fifth holding unit, 101: shaft, 102: ball, 103: ball, 104: lid, 105: screw, 110: arm, 110a: objective lens holding unit, 110b: movement support unit, 111: Rack: 112: Motor, 113: Pinion, 114: Cable, 115: Control unit, 116a, 116b: Idler, 117a, 117b: Pinion, 118: Pinion, 118a: Screw, 119: Idler, 120: First holding unit 121: second holding part, 122: idler shaft, 123: shaft, 124: third holding part, 125: rotary encoder, 126: shaft, 130: incident light projection tube mounting surface, 131: projection tube side Connector: 132: Cable, 133: Microscope main body attachment surface, 134: Fitting part, 135: Main body side connector, 136: Cable, 140: Second Motor, 141: operation panel, 142: control unit, 143, 144: cable, K: cable.

Claims (5)

An epi-illumination system comprising a stage for placing a sample, at least one objective lens, a revolver to which the objective lens is attached, a light source for epi-illuminating the sample through the objective lens and a Koehler illumination system having an aperture stop In an upright microscope with
A coarse focusing mechanism that has a rotatable operation unit for coarse movement, and coarsely moves the stage in the optical axis direction of the objective lens in response to an operation on the operation unit;
A fine adjustment mechanism that has a rotatable operation unit for fine movement, and finely moves the revolver to which the objective lens is attached in response to an operation on the operation unit in an optical axis direction of the objective lens ,
The amount of movement of the stage in the optical axis direction according to the amount of rotation of the rotatable operation unit for fine movement is the amount of movement of the stage in the optical axis direction according to the amount of rotation of the rotatable operation unit for coarse movement. Set less than
In observing the image of the sample, the coarse movement focusing mechanism receives an operation on the rotary operation unit for coarse movement, and coarsely moves the stage in the optical axis direction of the objective lens to position the sample. Then, the fine movement focusing mechanism is caused to finely move in the optical axis direction of the objective lens in response to an operation on the rotatable operation unit for fine movement. Align the in-focus position with the sample,
An upright microscope characterized by that. It said rotatable each operation unit for coarse-movement and the fine movement are upright microscope according to claim 1, wherein each, characterized in that provided in the lower position than the stage in the microscope body. It said rotatable each operation unit for coarse-movement and the fine movement are upright microscope according to claim 1 or 2, wherein each characterized by having at least one respective rotatable handle. The upright type according to any one of claims 1 to 3, wherein the rotatable operation unit for coarse movement and the rotatable operation unit for fine movement are arranged on the same axis. microscope. The fine movement focusing mechanism includes a fine movement information detection unit that detects operation information by the rotatable operation unit for fine movement,
Drive means for finely moving the revolver in the vertical direction along the optical axis direction of the objective lens;
A control unit that drives and controls the driving means based on the operation information of the fine movement detected by the fine movement information detection unit;
The upright microscope according to claim 1, wherein the upright microscope is provided.

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