JP5428832B2 - Handle device, optical equipment - Google Patents

Description

  The present invention relates to a handle device and an optical apparatus.

  Conventionally, as an electric handle device for coarsely and finely moving a movable part of an optical instrument, for example, a microscope stage, for example, a coarse handle is provided at both ends of the coarse hollow shaft, and the inside of the coarse hollow shaft is extended. A fine movement handle is provided at both ends of the existing fine movement shaft, and the first rotation detection means for detecting the rotation of the coarse movement hollow shaft and the second rotation detection means for detecting the rotation of the fine movement shaft are provided. There are some (see, for example, FIG. 3 of Patent Document 1).

JP-A-8-166545

  However, since the above-described electric handle device has a structure in which the second rotation detecting means for detecting the rotation of the fine movement shaft is provided inside the coarse movement hollow shaft, it has been desired to reduce the size of the handle device. .

  The present invention has been made in view of the above problems, and an object thereof is to provide a handle device that achieves miniaturization and an optical apparatus having the handle device.

  In order to solve the above-described problems, a handle device according to the present invention includes a coarsely-moving hollow shaft for coarsely moving a movable part, and an inside of the coarsely-moving hollow shaft for finely moving the movable part. A fine movement shaft; at least one coarse movement handle provided on the coarse movement hollow shaft; at least one fine movement handle provided on the fine movement shaft; and the coarse movement handle provided on an outer periphery of the coarse movement hollow shaft. First rotation detecting means for detecting the rotation of the coarse movement hollow shaft rotating in accordance with the rotation of the fine movement shaft, and transmitting the rotation of the fine movement shaft rotating in accordance with the rotation of the fine movement handle to the outside of the coarse movement hollow shaft. A rotation transmission means; a second rotation detection means provided on an outer periphery of the coarse movement hollow shaft for detecting the rotation of the fine movement shaft transmitted by the rotation transmission means; and in response to an operation of the coarse movement handle, Moving parts move relatively fast Then, the first and second rotation detecting means are connected to a control circuit that controls the driving unit for moving the movable part so that the movable part moves at a relatively low speed in response to the operation of the fine movement handle. Output means for outputting the detected detection value.

  An optical apparatus according to the present invention includes the handle device.

  ADVANTAGE OF THE INVENTION According to this invention, the handle apparatus which achieved size reduction and an optical apparatus which has this can be provided.

It is a side view showing an example of a microscope provided with a handle device concerning an embodiment. It is sectional drawing which shows the handle apparatus which concerns on embodiment. It is AA sectional drawing of the handle apparatus shown by FIG.

  Hereinafter, a handle device according to an embodiment of the present application and a microscope including the handle device will be described with reference to the drawings.

  First, a microscope 1 provided with an electric handle device 29 (see FIG. 2) according to the present embodiment will be described with reference to FIG. In addition, the microscope 1 shown in FIG. 1 is an example, and is not limited to this form. For example, it is possible to apply the handle device 29 of the present embodiment to an inverted microscope. Furthermore, the present invention can be applied not only to a microscope but also to a surveying instrument such as theodolite.

  As shown in FIG. 1, the microscope 1 includes a base 3, a support column 5, an arm 7, a substage 9, an eyepiece lens 11, and the like. A stage 13 is attached to the substage 9. A revolver 15 is attached to the arm 7, and a plurality of objective lenses 17 are attached to the revolver 15.

  The base 3 of the microscope 1 is provided with a handle device 29 according to an embodiment described later, and the coarse movement handle 19 and the fine movement handle 21 are exposed to the outside of the base 3. The spectroscope rotates the coarse movement handle 19 and the fine movement handle 21 to drive the substage 9 and the stage 13 (movable part) in the vertical direction (the optical axis of the objective lens 17 disposed in the observation optical path) by driving the motor. Direction).

  Further, for example, the base 3 is provided with a lighting device (not shown) for illuminating a sample (not shown) placed on the stage 13. Illumination light from the light source of the illuminating device travels from the rear to the front of the microscope 1, passes through the lower side of the handle device 29, passes through the front side of the handle device 29, travels upward, and irradiates the specimen on the stage 13. Is done. Of course, an epi-illumination device may be provided behind the arm 7. The spectroscope can observe the specimen through the optical system from the objective lens 17 to the eyepiece 11. In addition, a camera head (not shown) can be attached to a port 27 provided in the lens barrel 25 attached to the upper part of the arm 7, and a sample can be photographed to obtain an image.

  Next, the handle device 29 according to the embodiment will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 2, the handle device 29 includes a coarsely-moving hollow shaft 33 that is rotatably supported by a support portion 31 provided inside the base 3, and extends inside the coarsely-moving hollow shaft 33. And a fine movement shaft 35 rotatably held by the movement hollow shaft 33. The coarse movement handle 19 is fixed to both ends of the coarse movement hollow shaft 33 by handle fixing screws 37. Fine movement handles 21 are provided at both ends of the fine movement shaft 35.

  FIG. 2 is a view of the handle device 29 as viewed from the analyzer side. The coarse movement hollow shaft 33 and the fine movement shaft 35 penetrate the base 3 from side to side as viewed from the analyzer side. The coarse movement handle 19 and the fine movement handle 21 that are exposed to the outside of the base 3 are rotatably fitted to each other. In the handle device 29 of the present embodiment, the coarse movement hollow shaft 33 and the fine movement shaft 35 are coaxial, and have a uniaxial configuration as a whole.

  In FIG. 2, a cylindrical portion 39 is fitted on the right side of the coarse movement hollow shaft 33, and the cylindrical portion 39 is fixed to the coarse movement hollow shaft 33 by a cylindrical portion fixing screw 41. A first encoder wheel 43 is externally fitted and fixed to the cylindrical portion 39. When the spectroscope rotates the coarse movement handle 19, the coarse movement hollow shaft 33, the cylindrical portion 39, and the first encoder wheel 43 rotate accordingly.

  A first photo interrupter 45 is provided below the support portion 31 so as to sandwich the first encoder wheel 43. The first photo interrupter 45 is connected to a control circuit (not shown) by a first cable 47 as output means, and is proportional to the rotation amount (detected value) of the coarse movement handle 19, that is, the rotation amount of the coarse movement hollow shaft 33. A pulse signal having the number of pulses is output to the control circuit. The first encoder wheel 43, the first photo interrupter 45, and the like constitute first rotation detection means for detecting the rotation of the coarse movement hollow shaft 33.

  In FIG. 2, a shaft side taper 51 connected to the small diameter portion 49 at the left end is formed on the left side of the fine movement shaft 35. A cylindrical piece 53 and a compression spring 55 are fitted on the small diameter portion 49 of the fine movement shaft 35. In FIG. 2, a piece-side taper 57 that is opposed to the shaft-side taper 51 is formed at the right end of the piece 53.

  As shown in FIG. 2 and FIG. 3, there are three holes at the outer peripheral position of the shaft side taper 51 of the fine movement shaft 35 at equal intervals along the circumference (120 degree intervals). 59 is formed. Three steel balls (spherical members) 61 are rotatably fitted in these three holes 59. In addition, a cylindrical ring (annular portion) 63 is rotatably fitted on the left side of the coarse hollow shaft 33 in FIG. A second encoder wheel 65 is fitted and fixed to the cylindrical ring 63.

  In FIG. 2, a male screw 67 is formed at the left end of the small diameter portion 49 of the fine movement shaft 35, and a female screw 71 is formed at a protruding portion 69 protruding rightward from the center of the left fine movement handle 21. It is screwed. When assembling, after the piece 53 and the compression spring 55 are externally fitted to the small diameter portion 49, the male screw 67 and the female screw 71 are screwed and bonded and fixed, and the right side from the fine movement handle 21 and the small diameter portion 49 on the right side. The part up to the fine movement handle 21 is integrated.

  The piece 53 is pushed rightward in FIG. 2 by a compression spring 55 in contact with the tip of the protruding portion 69, and the three steel balls 61 are pushed by the piece side taper 57. The three steel balls 61 are pressed against the piece 53 and are brought into contact with and pressed against the shaft side taper 51 of the fine movement shaft 35 and the inner peripheral surface of the cylindrical ring 63. A pressing portion for pressing the three steel balls 61 to contact the fine movement shaft 35 and the cylindrical ring 63 is constituted by the piece 53, the compression spring 55, and the like.

  When the spectroscope rotates the fine movement handle 21, the fine movement shaft 35 rotates accordingly, and at the same time, the three steel balls 61 rotate to rotate the cylindrical ring 63 and the second encoder wheel 65. Here, for example, by inserting a wave washer (not shown) between the left and right end faces of the support portion 31 and the inner end faces of the left and right coarse movement handles 19 in FIG. 2, the spectroscope rotates the coarse movement handle 19. It is desirable that the resistance force received at the time be larger than the resistance force received when the fine movement handle 21 is rotated. Further, it is further desirable to sandwich the wave washer with resin in order to prevent the coarse movement handle 19 and the like from being damaged and to make the rotation smooth. By making the coarse movement handle 19 heavier than the fine movement handle 21, it is possible to prevent the coarse movement handle 19 from rotating when the fine movement handle 21 is rotated, and to provide a feeling of operation with a normal manual handle device. Can be the same. Rotation transmitting means for transmitting the rotation of the fine movement shaft 35 inside the coarse movement hollow shaft 33 to the outside of the coarse movement hollow shaft 33 from the above-mentioned piece 53, compression spring 55, three steel balls 61, cylindrical ring 63 and the like. Composed.

  A second photo interrupter 73 is provided below the support portion 31 so as to sandwich the second encoder wheel 65. The second photo interrupter 73 is connected to a control circuit (not shown) by a second cable 75 as an output means, and has a pulse number proportional to the rotation amount (detected value) of the fine movement handle 21, that is, the rotation amount of the fine movement shaft 35. The pulse signal is output to the control circuit. The second encoder wheel 65, the second photo interrupter 73, and the like constitute second rotation detecting means for detecting the rotation of the fine movement shaft 35 transmitted by the above-described rotation transmitting means.

  Since the light beam of the illumination device passes near the center of the handle device 29 provided on the base 3 of the microscope 1, the first rotation detection unit, the rotation transmission unit, and the second rotation detection unit described above are on the left side of the handle device 29. It is desirable to install it on the right side. Of course, the arrangement of the first rotation detection unit, the rotation transmission unit, and the second rotation detection unit may be reversed from that of the present embodiment.

  The handle device 29 is configured as described above, and the above-described control circuit (not shown) compares the substage 9 and the stage 13 of the microscope 1 with coarse movement, that is, fine movement in response to the operation of the coarse movement handle 19. An illustration for moving the sub-stage 9 and the stage 13 so that the sub-stage 9 and the stage 13 move at a high speed and the sub-stage 9 and the stage 13 move at a low speed as compared with the fine movement, that is, the coarse movement in response to the operation of the fine movement handle 21. Control the drive that does not.

  More specifically, when the spectroscope rotates the coarse handle 19, the control circuit controls the motor of the driving unit (not shown) at a rotational speed proportional to the frequency of the pulse signal input from the first photo interrupter 45. Is rotated to roughly move the substage 9 and the stage 13 in the vertical direction. The control circuit rotates a motor of a driving unit (not shown) at a rotation speed proportional to the frequency of the pulse signal input from the second photo interrupter 73 when the spectroscope rotates the fine movement handle 21. The substage 9 and the stage 13 are slightly moved up and down.

  Here, in order to realize the coarse movement and the fine movement of the substage 9 and the stage 13, respectively, even when the rotation amount when the coarse movement handle 19 is operated and the rotation amount when the fine movement handle 21 is operated are the same. The following two methods are used. That is, the resolution of the first encoder wheel 43 and the second encoder wheel 65 is changed (the former resolution is made higher than the latter resolution), or the motor rotation amount per pulse of the input pulse signal is set by the control circuit. Change between coarse motion and fine motion (the amount of motor rotation per pulse when a pulse signal is input from the first photo interrupter 45 is set to one pulse when a pulse signal is input from the second photo interrupter 73. Larger than the motor rotation amount).

  If the coarse handle 19 is made heavier than the fine handle 21 by providing a wave washer or the like as described above, the coarse handle 19 can be stopped when the fine handle 21 is turned. Therefore, at this time, a pulse signal for coarse movement is not input from the first photo interrupter 45 to the control circuit, and an accurate fine movement operation is possible.

  Further, even if the fine movement handle 21 is rotated when the coarse movement handle 19 is rotated, although the influence on the coarse movement operation is small, a control circuit is provided when the coarse movement handle 19 is rotated in order to realize a more accurate coarse movement operation. More preferably, the motor is rotated only by the pulse signal for coarse movement input from the first photo interrupter 45.

  In addition, although the case where the movable parts to be moved by the handle device 29 of the present embodiment are the substage 9 and the stage 13 of the upright microscope 1 has been described, the present invention is not limited to this. May be.

  As described above, according to the present embodiment, it is possible to reduce the size of the handle device as compared with the prior art.

  Further, according to the present embodiment, it is not necessary to electrically switch between the coarse movement mode and the fine movement mode by a switch, and the coarse movement handle 19 is rotated and operated in the same manner as a normal manual handle device. The fine movement operation can be realized by rotating the fine movement handle 21. In addition, the structure is simple and the cost can be reduced.

  Further, according to the present embodiment, in order to transmit the rotation of the fine movement shaft 35 inside the coarse movement hollow shaft 33 to the outside of the coarse movement hollow shaft 33, the coarse movement hollow shaft 33 is cut halfway and divided into two. There is no need to have a separate structure, and there is no problem of causing a sense of incongruity that the rotation of the left and right coarse movement handles 19 is separate.

  Note that the above-described embodiment is merely an example, and is not limited to the above-described configuration, and can be appropriately modified and changed within the scope of the present invention. For example, instead of using the piece 53, the compression spring 55, the three steel balls 61, the cylindrical ring 63, etc. as the rotation transmission means, the rotation transmission means may be constituted by a plurality of gears.

DESCRIPTION OF SYMBOLS 1 Microscope 3 Base 9 Substage 13 Stage 17 Objective lens 19 Coarse movement handle 21 Fine movement handle 29 Handle apparatus 33 Coarse movement hollow shaft 35 Fine movement shaft 43 First encoder wheel 45 First photo interrupter 53 Piece 55 Compression spring 59 Hole 61 Steel ball 63 Cylindrical ring 65 Second encoder wheel 73 Second photo interrupter

Claims (4)

A coarse hollow shaft for coarsely moving the movable part;
A fine movement shaft extending inside the coarse movement hollow shaft and finely moving the movable portion;
At least one coarse handle provided on the coarse hollow shaft;
At least one fine movement handle provided on the fine movement shaft;
First rotation detecting means provided on an outer periphery of the coarse movement hollow shaft and detecting rotation of the coarse movement hollow shaft rotating in accordance with rotation of the coarse movement handle;
Rotation transmission means for transmitting the rotation of the fine movement shaft that rotates in accordance with the rotation of the fine movement handle to the outside of the coarse movement hollow shaft;
Second rotation detection means provided on the outer periphery of the coarse movement hollow shaft for detecting the rotation of the fine movement shaft transmitted by the rotation transmission means;
Drive for moving the movable part so that the movable part moves relatively fast in response to the operation of the coarse handle, and the movable part moves relatively slowly in response to the operation of the fine handle An output means for outputting a detection value detected by the first and second rotation detecting means to a control circuit for controlling the part.   The rotation transmitting means is rotatably fitted in at least one hole formed in the peripheral portion of the coarse movement hollow shaft, and contacts the annular portion and the fine movement shaft that are rotatably fitted to the coarse movement hollow shaft. The handle device according to claim 1, comprising at least one spherical member.   The handle device according to claim 2, wherein the rotation transmission means includes a pressing portion for pressing the spherical member to contact the fine movement shaft and the annular portion.   An optical apparatus comprising the handle device according to any one of claims 1 to 3.

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