JP2012197839A - Optical axis adjustment base - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical axis adjustment base, capable of minutely and easily adjusting the direction of a laser optical axis vertically and preventing vertical deviation of the direction after the adjustment.SOLUTION: The optical axis adjustment base 15 includes a vertical adjustment fixing mechanism 50 which vertically adjusts and fixes the direction of a top base plate 35 for vertically adjusting and fixing the direction of the laser optical axis. The vertical adjustment fixing mechanism 50 includes a fixing member 55 and a receiving washer 57. The outer peripheral surface 55c of the fixing member 55 has a spherical shape so as to be closely fitted to the receiving washer 57. The inner peripheral surface 57c of the receiving washer 57 has a spherical shape so as to be closely fitted to the outer peripheral surface 55c.

Description

  The present invention relates to an optical axis adjusting table for adjusting the direction of a laser optical axis of a laser unit in a laser unit that wirelessly transmits data using a laser beam.

  Generally, a laser unit transmits data to a light receiver wirelessly using a laser beam. This light receiver is disposed far away from the laser unit.

  The laser unit is generally installed in an outdoor environment, and is easily affected by wind or rain outdoors. The laser unit is installed on a tripod for fixing, and is mounted on a vehicle or the like for movement. The laser unit is also subjected to vibration and impact during such installation and mounting. As a result, the direction of the laser optical axis may be shifted. Therefore, the laser unit is arranged on an optical axis adjustment base that adjusts the direction of the laser optical axis and collimates the laser optical axis.

  For example, Patent Document 1 discloses an optical axis calibration apparatus that can easily perform collimation calibration of a laser beam with high accuracy.

JP 2010-216679 A

  In the laser unit, it is more important to adjust the vertical direction (tilt) of the laser optical axis due to its own weight and gravity. However, it is not easy to finely adjust the vertical direction in a general optical axis adjustment table, and is not specifically disclosed in Patent Document 1. Further, the vibration or impact at the time described above may cause the orientation to be lost again after adjustment.

  Therefore, in view of the above circumstances, an object of the present invention is to provide an optical axis adjustment table that can finely and easily adjust the vertical direction of the laser optical axis and prevent the deviation of the vertical direction after adjustment. .

  In order to achieve the object, the present invention is an optical axis adjusting table for adjusting and fixing the direction of the laser optical axis of the laser beam emitted from the laser unit in the vertical direction, and collimating the laser optical axis, A base plate to be a substrate, a sub-base plate placed on the base plate, placed on the sub-base plate, the laser unit is placed, and the vertical direction of the laser optical axis is adjusted In addition, the top base plate that is movable in the vertical direction with respect to the sub base plate and the vertical direction of the top base plate are adjusted and fixed in order to adjust and fix the vertical direction of the laser optical axis. An up-and-down adjustment fixing mechanism, wherein the up-and-down adjustment fixing mechanism includes an opening disposed on one end portion side of the sub-base plate and the one end portion side of the back surface of the top base plate. Optical axis adjustment table height And an adjustment shaft that passes through the opening and serves as a center for vertical adjustment and fixing of the top base plate, and both sides of the sub base plate so as to sandwich the sub base plate. The adjusting shaft is fitted, the vertical direction of the top base plate is adjusted, and a fixing member that fixes the adjusted direction is disposed between the fixing member and the sub base plate. The adjusting shaft is inserted, the loosening member is prevented from loosening, the protective member protecting the sub-base plate from the fixing member, and the protective member and the fixing member, respectively, A receiving member that receives the fixing member, the outer peripheral surface of the fixing member has a spherical shape so as to be in close contact with the receiving member, and the entire inner peripheral surface of the receiving member is In close contact with the outer peripheral surface, The rotational force of the constant member is transmitted to the receiving member from the fixing member, so as to prevent slippage of the protective material, to provide an optical axis adjustment table which is characterized in that it has a spherical shape.

  ADVANTAGE OF THE INVENTION According to this invention, the optical axis adjustment stand which can adjust the vertical direction of a laser optical axis finely and easily and can prevent the shift | offset | difference of the vertical direction after adjustment can be provided.

FIG. 1 is a perspective view of the laser unit. FIG. 2A is an exploded perspective view of the optical axis adjustment base viewed from above. FIG. 2B is an exploded perspective view of the optical axis adjustment base viewed from below. FIG. 3A is a cross-sectional view of the optical axis adjustment base when the top base plate is horizontal, an enlarged view of the vertical adjustment fixing mechanism in this state, and the close contact between the outer peripheral surface of the fixing nut and the inner peripheral surface of the plate washer in this state It is an enlarged view of a state. FIG. 3B is a cross-sectional view of the optical axis adjustment base with the top base tilted upward, an enlarged view of the vertical adjustment fixing mechanism in this state, and the outer peripheral surface of the fixing nut and the inner peripheral surface of the plate washer in this state It is an enlarged view of a close_contact | adherence state. FIG. 3C is a cross-sectional view of the optical axis adjustment base in a state where the top base is inclined downward, an enlarged view of the vertical adjustment fixing mechanism in this state, and the outer peripheral surface of the fixing nut and the inner peripheral surface of the plate washer in this state It is an enlarged view of a close_contact | adherence state.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiment will be described with reference to FIGS. 1, 2, 3A, 3B, and 3C.
A laser unit 10 as shown in FIG. 1 is, for example, a projector that emits a laser beam having a desired irradiation range (hereinafter referred to as a laser pattern). The laser unit 10 wirelessly transmits data to a light receiver by transmitting a laser beam to which necessary data is added to a light receiver (not shown) that wirelessly receives the laser light.

  The light receiver (not shown) is disposed away from the laser unit 10 at a distance of, for example, 3000 m to 5000 m. The light receiver is a transmission destination of the laser beam emitted from the laser unit 10. Thus, in this embodiment, data is transmitted between 3000 m and 5000 m, for example.

  As shown in FIG. 1, the laser unit 10 changes the direction of the laser optical axis of the laser beam emitted from the laser unit 10 in the up / down / left / right directions based on the error for collimation calibration calculated by an error calculation unit (not shown). And is mounted on an optical axis adjustment base 15 for collimating and calibrating the laser optical axis. The optical axis adjustment base 15 is attached to a fixing portion 13 that fixes the laser unit 10 to an aiming unit 20 described later via the optical axis adjustment base 15. The fixing portion 13 is, for example, a mounting bracket. The fixed portion 13 has a shape corresponding to the aiming unit 20.

  The aiming unit 20 is a device that sets the aim of the laser beam of the laser unit 10 to the light receiver before the laser unit 10 transmits data to the light receiver. Thus, the aiming unit 20 is a device used as a preparation before the laser unit 10 transmits data to the light receiver. The aiming unit 20 has aiming glasses 21 that are telephoto optical lenses. The aiming eyeglasses 21 are lenses that can be looked into in order to set the aim of the laser beam of the laser unit 10 in the light receiver.

  As shown in FIG. 1, the sighting glasses 21 are provided with a reticle 20a that is, for example, a cross-shaped index for setting the aim of the laser beam as described above. The reticle 20 a indicates the position of the aiming axis of the aiming glasses 21. This reticle 20a coaxially overlaps (coincides with) a reticle (not shown) on the light receiver side, thereby aligning the laser unit 10 and the aiming unit 20 with respect to the light receiver, and setting the aim of the laser unit 10 Is. The magnification of the aiming glasses 21 is 10 times, for example. The aiming unit 20 is provided with a tripod for installation.

  Next, with reference to FIG. 2 and FIG. 3A, the optical axis adjusting table 15 that adjusts and fixes the direction of the laser optical axis in the vertical and horizontal directions and prevents the deviation of the orientation after the adjustment will be described in detail. In the following, the width direction of the optical axis adjustment table 15 is the X direction, the length direction of the optical axis adjustment table 15 is a direction perpendicular to the X direction, the Y direction, and the height direction of the optical axis adjustment table 15 is the X direction. The direction perpendicular to the Y direction is referred to as the Z direction.

  As shown in FIG. 2, the optical axis adjustment base 15 is disposed on the fixed portion 13 and is placed on the base plate 31 serving as a substrate and the base plate 31 to adjust the horizontal direction of the laser optical axis. The sub-base plate 33 is movable along the axis in the Z direction with respect to the base plate 31, that is, is movable in the left-right direction with respect to the base plate 31. The laser unit is mounted on the sub-base plate 33. 10 is mounted and is movable along the X-axis axis with respect to the sub-base plate 33 in order to adjust the vertical direction of the laser optical axis, that is, in the vertical direction with respect to the sub-base plate 33. It has a movable top base plate 35.

  As shown in FIG. 2B and FIG. 3A, the sub base plate 33 is stacked on the base plate 31, and the top base plate 35 is stacked on the sub base plate 33. At this time, one end of the top base plate 35 and the sub base plate 33 protrudes from one end of the base plate 31 in the Y direction.

  As shown in FIG. 2, the base plate 31 is provided with an opening 31 a through which a bolt or the like for attaching the base plate 31 (optical axis adjusting table 15) to the fixed portion 13 passes.

  As shown in FIG. 2A, the top base plate 35 is bent so as to have a concave shape. The top base plate 35 is provided with a mounting base 35a to which the laser unit 10 is attached.

As shown in FIG. 2, the optical axis adjustment base 15 adjusts and fixes the horizontal direction of the sub-base plate 33 in order to adjust and fix the horizontal direction of the laser optical axis. And a vertical adjustment fixing mechanism 50 for adjusting and fixing the vertical direction of the top base plate 35 in order to adjust and fix the vertical direction of the laser optical axis.
Hereinafter, the horizontal adjustment fixing mechanism 40, the horizontal adjustment method and fixing method using the left and right adjustment fixing mechanism 40, the vertical adjustment fixing mechanism 50, and the vertical adjustment method and fixing method using the vertical adjustment fixing mechanism 50 will be described. To do.

First, the left and right adjustment fixing mechanism 40 will be described with reference to FIG.
As shown in FIG. 2B, the left / right adjustment fixing mechanism 40 includes an opening 41 that is a shaft hole disposed on one end side of the base plate 31, and one end side of the back surface of the sub base plate 33. Is disposed along the Z direction, is fitted in the opening 41, and has a left and right central shaft 42 which serves as a rotation center in the left and right direction of the sub-base plate 33.

  Further, as shown in FIG. 2A, the left / right adjustment fixing mechanism 40 is disposed on the other end side of the base plate 31 so as to be movable along the X direction, and rotates about the axis to rotate the sub base plate. The left and right moving shaft 43 that moves the left and right 33, the holding member 44 that is disposed on the other end side of the base plate 31 and holds the left and right moving shaft 43, and the left and right moving shaft 43 are provided. The left and right operation unit 45, which is a knob for operating the left and right moving shaft 43 to rotate the shaft 43 around the axis, and the sub base plate 33 are fixed to the sub base plate 33 by receiving the rotational force of the left and right moving shaft 43. And a left-right moving part 46 for moving the

  A male screw (not shown) is formed at the center of the left / right moving shaft 43. The left / right moving shaft 43 is thicker than the opening 46a of the left / right moving portion 46, and when the left / right moving shaft 43 rotates around the axis, this rotational force is transmitted to the left / right moving portion 46 to move the sub-base plate 33 in the left / right direction. In order to move, it has the large diameter part 43a which presses the left-right moving part 46. FIG.

  The holding member 44 is a receiving part that receives the left and right moving shaft 43. The holding member 44 holds both ends of the left and right moving shaft 43.

  The left and right moving portion 46 is provided with an opening 46a through which the left and right moving shaft 43 passes. On the inner peripheral surface of the opening 46a, a female screw (not shown) that engages with the male screw of the left and right moving shaft 43 is formed. Such a left-right moving part 46 is a screw seat.

Next, the adjustment method and fixing method of the horizontal direction of the sub-base plate 33 by the left-right adjustment fixing mechanism 40 will be described.
When the sub-base plate 33 is placed on the base plate 31, the left / right moving shaft 43 opens so that the left / right central shaft 42 fits into the opening 41 and the male screw of the left / right moving shaft 43 meshes with the female screw of the opening 46a. It penetrates the part 46a. When the left / right operation unit 45, which is a knob, is operated and rotated, the left / right operation shaft 45 and the left / right moving shaft 43 also rotate around the axis. At this time, the left and right moving shaft 43 moves along the X direction, and the large diameter portion 43 a presses the left and right moving portion 46. As a result, the sub base plate 33 rotates in the left-right direction with respect to the base plate 31 about the left-right central axis 42 together with the left-right moving portion 46. Thereby, the laser unit 10 rotates in the left-right direction, and the direction of the laser optical axis in the left-right direction is adjusted.

  When the rotation of the left / right operation unit 45 stops, the sub-base plate 33 is fixed to the base plate 31, the horizontal direction of the laser unit 10 is fixed, and the horizontal direction of the laser optical axis is fixed.

Next, the vertical adjustment fixing mechanism 50 will be described with reference to FIG.
The vertical adjustment fixing mechanism 50 is disposed along the X direction on the other end portion side of the inner peripheral surface of the top base plate 35, and is a vertical center shaft 51 that is, for example, a screw serving as a vertical rotation center of the top base plate 35. And a base member 52b having an opening 52a into which the vertical center shaft 51 is fitted, and the other side of the sub-base plate 33, and the top base plate 35 is inclined in the vertical direction. A holding member 52 that holds the base member 52b is provided so as to rotate around the axis of the shaft.
The vertical adjustment fixing mechanism 50 further includes an opening 52d around the vertical center axis 51 in order to complement the fitting between the vertical center axis 51 and the opening 52a, and is disposed on the base member 52b. A central axis 52e, which is a protrusion, for example, is fitted around the opening 52d around the 52a.

  The vertical center axis 51 is disposed on this surface so as to penetrate each of the opposing surfaces of the concave top base plate 35. The base member 52 b and the holding member 52 are disposed so as to face each other in the X direction so as to correspond to the vertical center axis 51. When the top base plate 35 is placed on the sub base plate 33, the base member 52b and the holding member 52 are covered with the top base plate 35. At this time, the vertical center shaft 51 is fitted into the opening 52a, and the central shaft 52e. Is fitted into the opening 52d. Accordingly, the top base plate 35 is inclined in the vertical direction with respect to the holding member 44 (sub-base plate 33) via the vertical center shaft 51, the opening 52a, the central shaft 52e, the opening 52d, and the base member 52b.

  The vertical adjustment fixing mechanism 50 is disposed along the Z direction on the one end side of the back surface of the top base plate 35 and the opening 53 disposed on one end side of the sub base plate 33. An adjustment shaft 54 that penetrates the portion 53 and serves as a center for vertical adjustment and fixing of the top base plate 35 is provided.

The opening 53 and the adjustment shaft 54 are disposed closer to one end than the left and right central shaft 42. Further, the base plate 31, the sub base plate 33, and the top base plate 35 are laminated as described above so that the adjustment shaft 54 penetrating the opening 53 does not overlap with one end of the base plate 31 in the Z direction. Has been.
The adjustment shaft 54 is formed with a male screw (not shown).

The vertical adjustment fixing mechanism 50 is disposed on each side of the sub base plate 33 so as to sandwich the sub base plate 33, and adjusts the vertical direction of the top base plate 35 to fix the adjusted direction. A fixing nut 55 is provided.
The vertical adjustment fixing mechanism 50 is disposed between the fixing nut 55 and the sub base plate 33, and is a loosening prevention member that prevents the fixing nut 55 from loosening, and protects the sub base plate 33 from the fixing nut 55. It has a flat plate washer 56 which is also a protective material.
The vertical adjustment fixing mechanism 50 includes a receiving washer 57 that is disposed between the fixing nut 55 and the flat plate washer 56 and receives the fixing nut 55.

The fixing nut 55 has an opening 55 a into which the adjustment shaft 54 fits in the center. The opening 55 a has substantially the same size as the adjustment shaft 54. A female screw (not shown) that meshes with a male screw (not shown) of the adjustment shaft 54 is formed in the opening 55a. The flat washer 56 has an opening 56 a through which the adjustment shaft 54 is inserted, and the opening 56 a is larger than the adjustment shaft 54. The receiving washer 57 has an opening 57 a through which the adjustment shaft 54 is inserted, and the opening 57 a is larger than the adjustment shaft 54.
The flat washer 56 is a plate-shaped spring washer.

  An opening 55 d into which a rod-shaped jig is inserted in order to rotate the fixing nut 55 is disposed on the outer peripheral surface 55 c of the base end portion of the fixing nut 55.

  As shown in FIG. 3A, the fixing nut 55 has a convex shape, and the receiving washer 57 has a concave shape. The distal end portion 55 b of the fixing nut 55 is received by the receiving washer 57. The outer peripheral surface 55c of the distal end portion 55b has a spherical shape so as to be in close contact with the receiving washer 57 even if the distal end portion 55b is inclined.

  Further, the entire inner peripheral surface 57c of the receiving washer 57 is in close contact with the spherical outer surface 55c of the tip 55b, and the rotational force of the fixing nut 55 is transmitted from the distal end 55b to the receiving washer 57. Thus, the flat plate washer 56 is surely uniformly crushed, and the flat plate washer 56 is prevented from slipping. The entire inner peripheral surface 57c is larger than the entire outer peripheral surface 55c so that it always comes into close contact with the entire outer peripheral surface 55c when the fixing nut 55 is tilted together with the adjusting shaft 54.

Next, with reference to FIG. 3A, FIG. 3B, and FIG. 3C, the upward adjustment method and fixing method of the top base plate 35 by the vertical adjustment fixing mechanism 50 will be described.
When the top base plate 35 is placed on the sub-base plate 33, the vertical center shaft 51 is fitted into the opening 52a of the base member 52b, the central shaft 52e is fitted into the opening 52d, and the adjustment shaft 54 is opened to the opening 53. To penetrate. At this time, the flat plate washer 56, the receiving washer 57, and the fixing nut 55 pass through the adjustment shaft 54 in the Z direction from the sub base plate 33 so as to sandwich the sub base plate 33 in order from both sides.

  When tilting the top base plate 35 upward as shown in FIG. 3B from the state shown in FIG. 3A, a jig is inserted into the opening 55d of the fixing nut 551 on the base plate 31 side, and the fixing nut 551 is Rotates counterclockwise and loosens.

  Thereafter, a jig is inserted into the opening 55d of the fixing nut 552 on the top base plate 35 side, and the fixing nut 552 is rotated clockwise by the jig and tightened. As a result, the adjustment shaft 54 is pushed upward by, for example, 2 degrees, and the top base plate 35 is inclined upward by, for example, 2 degrees about the vertical center axis 51 and the central axis 52e. Thus, the inclination of the top base plate 35 is finely adjusted upward. Similarly, the inclination of the laser unit 10 placed on the top base plate 35 is finely adjusted upward, and the upward direction of the laser optical axis is finely adjusted.

  At this time, the adjustment shaft 54 is inclined with respect to the sub-base plate 33 as shown in FIG. 3B. Further, since the adjustment shaft 54 is fitted in the opening 55a, when the adjustment shaft 54 is inclined, the fixing nuts 551 and 552, together with the adjustment shaft 54, the sub-base plate 33 and the flat plate according to the inclination of the adjustment shaft 54. It is inclined with respect to the washer 56 and the receiving washer 57. The adjustment shaft 54 only passes through the openings 56 a and 57 a, and the openings 56 a and 57 a are larger than the adjustment shaft 54. Therefore, even if the adjustment shaft 54 is inclined, the flat washer 56 and the receiving washer 57 are not inclined.

  Then, a jig is inserted into the opening 55d of the loosened fixing nut 551 on the base plate 31 side, and the fixing nut 551 is rotated clockwise by the jig, tightened and fixed. Thereby, the upward direction of the top base plate 35 is fixed. Therefore, the upward direction of the laser unit 10 is fixed, and the upward direction of the laser optical axis is fixed.

  The laser unit 10 is generally installed in an outdoor environment, and is easily affected by wind, rain, or the like outdoors. The laser unit 10 is installed on the aiming unit 20 having a tripod for fixing, and is placed on a vehicle or the like for movement. The laser unit 10 is also subjected to vibration and impact during such installation and placement. For this reason, there is a risk that the orientation after adjustment may be lost due to vibration or impact.

  However, in this embodiment, as shown in FIG. 3B, the outer peripheral surface 55c of the tip 55b is an R surface in the fixing nut 55 and the receiving washer 57, and the entire inner peripheral surface 57c of the receiving washer 57 is the R surface. The entire inner peripheral surface 57c is larger than the entire outer peripheral surface 55c. Therefore, the tip 55b and the receiving washer 57 are always in close contact with each other even if the adjusting shaft 54 and the fixing nut 55 are inclined. Further, the rotational force when the fixing nut 55 is tightened is transmitted to the receiving washer 57 through the inner peripheral surface 57c (R surface) of the tip 55b, and the receiving washer 57 crushed the flat plate washer 56 uniformly and uniformly by this rotational force. The slip of the washer 56 is prevented. As a result, the rotational force of the fixing nut 55 is reliably transmitted to the sub-base plate 33, and the flat washer 56 is prevented from slipping. Therefore, the upward direction of the top base plate 35 is such as wind or rain outdoors. Even if it is affected or subjected to vibration or impact, it is securely fixed without slipping. The upward direction of the laser unit 10 is fixed, and the upward direction of the laser optical axis is fixed.

Next, a downward direction adjustment method and a fixing method of the top base plate 35 by the vertical adjustment fixing mechanism 50 will be described.
As shown in FIG. 3C from the state shown in FIG. 3A, when the top base plate 35 is inclined downward, a jig is inserted into the opening 55d of the fixing nut 552 on the top base plate 35 side. Rotate clockwise and loosen.

  Thereafter, a jig is inserted into the opening 55d of the fixing nut 551 on the top base plate 35 side, and the fixing nut 551 is rotated clockwise by the jig and tightened. As a result, the adjustment shaft 54 is pushed downward, for example, twice, and the top base plate 35 is tilted downward, for example, by 2 degrees about the vertical center axis 51 and the central axis 52e. Thus, the inclination of the top base plate 35 is finely adjusted downward. Similarly, the inclination of the laser unit 10 placed on the top base plate 35 is finely adjusted upward, and the upward direction of the laser optical axis is finely adjusted.

  A jig is inserted into the opening 55d of the loose fixing nut 552 on the base plate 31 side, and the fixing nut 552 is rotated clockwise by the jig, tightened, and fixed. Thereby, the downward direction of the top base plate 35 is fixed. Therefore, the downward direction of the laser unit 10 is fixed, and the downward direction of the laser optical axis is fixed.

  At this time, similarly to the upward fixing method of the top base plate 35, the rotational force of the fixing nut 55 is reliably transmitted to the sub base plate 33, and the flat washer 56 is prevented from slipping. The downward direction is securely fixed without being displaced even if it is affected by wind or rain outdoors, or when vibration or impact is applied. Thereby, the downward direction of the laser unit 10 is fixed, and the downward direction of the laser optical axis is fixed.

  Thus, in the present embodiment, the tilt of the top base plate 35 can be finely adjusted in the vertical direction by the fixing nut 55, and the tilt of the laser unit 10 mounted on the top base plate 35 is also finely adjusted in the vertical direction. Thus, the upward direction of the laser optical axis can be finely adjusted. In the present embodiment, the fixing nut 55 can fix the inclination of the top base plate 35, the inclination of the laser unit 10, and the inclination of the laser optical axis.

  In the present embodiment, the receiving washer 57 is disposed between the fixing nut 55 and the flat plate washer 56, the outer peripheral surface 55 c of the fixing nut 55 is formed in a spherical shape (R shape), and the inner peripheral surface of the receiving washer 57. The entire surface of 57c is formed in a spherical shape (R shape). Accordingly, in this embodiment, the fixing nut 55 and the receiving washer 57 can be in close contact with each other, and the rotational force when the fixing nut 55 is tightened can be transmitted to the receiving washer 57 through the inner peripheral surface 57c (R surface) of the distal end portion 55b. In addition, the receiving washer 57 can reliably crush the flat plate washer 56 by this rotational force, and the flat plate washer 56 can be prevented from slipping. Therefore, in the present embodiment, the rotational force of the fixing nut 55 can be reliably transmitted to the sub-base plate 33, and the flat washer 56 can be prevented from slipping. Even if it is affected by rain or rain, or is subjected to vibration or impact, it can be securely fixed without slipping. In this embodiment, as described above, after fixing the inclination of the top base plate 35, the inclination of the laser unit 10 and the inclination of the laser optical axis by the fixing nut 55, the influence of wind, rain, etc. is applied outdoors. Even if the laser unit 10 is subjected to vibration or shock, the vertical direction of the laser unit 10 can be fixed, and the vertical direction of the laser optical axis can be fixed.

  Further, in this embodiment, even after the inclination of the top base plate 35, the inclination of the laser unit 10, and the inclination of the laser optical axis are fixed by the fixing nut 55, the outer peripheral surface 55c of the fixing nut 55 is spherical ( Since the entire inner peripheral surface 57c of the receiving washer 57 is formed in a spherical shape (R shape), the top base plate 35 is oriented in the vertical direction by its own weight or gravity. The vertical direction of the laser unit 10 can be fixed, the vertical direction of the laser optical axis can be fixed, and displacement of these directions can be prevented.

  In this embodiment, the outer peripheral surface 55c of the fixing nut 55 is formed in a spherical shape (R shape), and the entire inner peripheral surface 57c of the receiving washer 57 is formed in a spherical shape (R shape). Therefore, in this embodiment, even if the adjustment shaft 54 and the fixing nuts 551 and 552 are inclined with respect to the sub base plate 33, the flat plate washer 56 and the receiving washer 57, the outer peripheral surface 55c and the entire inner peripheral surface 57c Can be transmitted to the washer 57 by receiving the rotational force when the fixing nut 55 is tightened, and the flat plate washer 56 can be reliably crushed uniformly, the sliding of the flat plate washer 56 can be prevented, and the above-described effects can be obtained. be able to.

  In this embodiment, the vertical center shaft 51, the holding member 52, and the like are disposed on the other end side of the top base plate 35 and the sub base plate 33, and the adjustment shaft 54, the fixing nut 55, and the like in the vertical adjustment mechanism 50 are connected to the sub base plate. By disposing on the one end side of the base plate 33 or the like, the direction (tilt) in the vertical direction can be adjusted with a small amount of rotational force of the fixing nut 55.

  In the present embodiment, the horizontal adjustment fixing mechanism 40 can adjust and fix the horizontal direction of the sub-base plate 33, and can adjust and fix the horizontal direction of the laser optical axis.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment.

Moreover, although embodiment of this invention was described, these are included in the invention described in the claim, and its equality range.
Hereinafter, the invention described in the scope of claims of the present application will be appended.
[1]
An optical axis adjusting table for adjusting and fixing the direction of the laser optical axis of the laser beam emitted from the laser unit in the vertical direction, and collimating the laser optical axis,
A base plate to be a substrate;
A sub-base plate placed on the base plate;
A top base plate mounted on the sub base plate, mounted on the laser unit, and movable in the vertical direction with respect to the sub base plate in order to adjust the vertical direction of the laser optical axis;
A vertical adjustment fixing mechanism for adjusting and fixing the vertical direction of the top base plate in order to adjust and fix the vertical direction of the laser optical axis;
Comprising
The vertical adjustment fixing mechanism is
An opening disposed on one end side of the sub-base plate;
Arranged along the height direction of the optical axis adjustment base on one end side of the back surface of the top base plate, penetrates the opening, and serves as a center for vertical adjustment and fixing of the top base plate. An adjustment axis;
A fixing member disposed on each side of the sub-base plate so as to sandwich the sub-base plate, the adjustment shaft is fitted, the vertical direction of the top base plate is adjusted, and the fixed direction is fixed. ,
A protective material disposed between the fixing member and the sub-base plate, the adjustment shaft being inserted therethrough, preventing loosening of the fixing member, and protecting the sub-base plate from the fixing member;
A receiving member that is disposed between the protective member and the fixing member, the adjustment shaft is inserted, and receives the fixing member;
Have
The outer peripheral surface of the fixing member has a spherical shape so as to be in close contact with the receiving member,
The entire inner peripheral surface of the receiving member is in close contact with the outer peripheral surface, and has a spherical shape so that the rotational force of the fixing member is transmitted from the fixing member to the receiving member and prevents the protective material from slipping. An optical axis adjustment stand characterized by that.

  DESCRIPTION OF SYMBOLS 10 ... Laser unit, 13 ... Fixing part, 15 ... Optical axis adjustment stand, 20 ... Aiming unit, 31 ... Base plate, 33 ... Sub base plate, 35 ... Top base plate, 40 ... Left and right adjustment fixing mechanism, 50 ... Vertical adjustment Fixing mechanism, 51 ... vertical axis, 52 ... holding member, 52a ... opening, 52b ... base member, 52d ... opening, 52e ... central axis, 53 ... opening, 54 ... adjusting shaft, 55 ... fixing nut, 55b ... tip part, 55c ... outer peripheral surface, 56 ... flat plate washer, 57 ... receiving washer, 57c ... inner peripheral surface.

Claims (1)

An optical axis adjusting table for adjusting and fixing the direction of the laser optical axis of the laser beam emitted from the laser unit in the vertical direction, and collimating the laser optical axis,
A base plate to be a substrate;
A sub-base plate placed on the base plate;
A top base plate mounted on the sub base plate, mounted on the laser unit, and movable in the vertical direction with respect to the sub base plate in order to adjust the vertical direction of the laser optical axis;
A vertical adjustment fixing mechanism for adjusting and fixing the vertical direction of the top base plate in order to adjust and fix the vertical direction of the laser optical axis;
Comprising
The vertical adjustment fixing mechanism is
An opening disposed on one end side of the sub-base plate;
Arranged along the height direction of the optical axis adjustment base on one end side of the back surface of the top base plate, penetrates the opening, and serves as a center for vertical adjustment and fixing of the top base plate. An adjustment axis;
A fixing member disposed on each side of the sub-base plate so as to sandwich the sub-base plate, the adjustment shaft is fitted, the vertical direction of the top base plate is adjusted, and the fixed direction is fixed. ,
A protective material disposed between the fixing member and the sub-base plate, the adjustment shaft being inserted therethrough, preventing loosening of the fixing member, and protecting the sub-base plate from the fixing member;
A receiving member that is disposed between the protective member and the fixing member, the adjustment shaft is inserted, and receives the fixing member;
Have
The outer peripheral surface of the fixing member has a spherical shape so as to be in close contact with the receiving member,
The entire inner peripheral surface of the receiving member is in close contact with the outer peripheral surface, and has a spherical shape so that the rotational force of the fixing member is transmitted from the fixing member to the receiving member and prevents the protective material from slipping. An optical axis adjustment stand characterized by that.

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