JP2006350159A - Crystal holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crystal holder which prevents occurrence of a positional shift among members due to rotation of locking screws after completion of the angle adjustment of a crystal. <P>SOLUTION: A shoulder bolt 52 is inserted into the through-hole 27 of a first angle adjusting member 14 and its tip is screwed into the threaded hole 20 of a crystal holding member 12 and thereby both the members are freely rotatably engaged with each other. The tip of an adjusting screw 46 fixed to the angle adjusting member 14 is screwed to the cylindrical nut 21 of the crystal holding member 12, and then the crystal holding member 12 rotates around the shoulder bolt 52 as an axis. The through-hole 27 of the angle adjusting member 14 is provided with a small-diameter portion 56 into which the shank 52b of the shoulder bolt is freely rotatably inserted, a middle-diameter portion 57 in which a head 52a is housed and a large-diameter portion 58 which houses a locking washer 53. The locking washer 53 is pressed by the head of a locking screw 55 to a second stepped portion 60, and thereby the crystal holding member 12 and the first angle adjusting member 14 are fixed to each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a crystal holder that holds a unit including an electro-optic crystal, and more particularly to a crystal holder having a mechanism for finely adjusting the angle of a crystal.

A laser oscillator irradiates a laser medium such as a YAG rod installed between a total reflection mirror and an output mirror with excitation light, reflects and amplifies the light emitted from the laser medium between the mirrors, and then partially Is taken out from the output mirror.
Also, by passing the laser light emitted from the output mirror through a nonlinear optical crystal such as KTP or BBO, the second harmonic with a wavelength of half or the third harmonic with a wavelength of one third is obtained. It has also been generated.
In order to secure a stable laser output, the direction of the total reflection mirror and the output mirror arranged in parallel (parallelism) is of course important, but the axial direction of the crystal element depends on the laser beam. It is also extremely important to accurately position it so as to be at a predetermined angle with respect to the propagation direction.
For this reason, various crystal holders having a mechanism for finely adjusting the crystal angle have been proposed (see the following patent document).
JP 11-326970 A JP-A-8-3184745

  14 to 16 show an example of a conventional crystal holder. This crystal holder 100 is engaged with a crystal holding member 102 that sandwiches a Pockels cell 101 and the crystal holding member 102 so as to be freely rotatable. A first angle adjusting member 103 and a second angle adjusting member 104 rotatably engaged with the first angle adjusting member 103 are provided.

A recess 106 is formed in the vicinity of the center of the top plate 105 of the first angle adjusting member 103, and a shoulder bolt 107 for forming a rotating shaft is inserted into a through hole formed in the bottom surface of the recess 106. . The front end of the shoulder bolt 107 is screwed to the ceiling surface 108 of the crystal holding member 102.
Further, three through holes are formed in the top plate 105 of the first angle adjusting member 103, and a lock screw 109 is inserted into each through hole. The tip of each locking screw 109 is screwed into the ceiling surface 108 of the crystal holding member 102.
Further, a through hole is formed in the vertical plate 110 of the first angle adjusting member 103, and an adjusting screw 111 is inserted into the through hole. A coil spring 112 is inserted into the adjustment screw 111, and the tip thereof is screwed into a nut 113 embedded in the crystal holding member 102.

A recess 115 is formed near the center of the vertical plate 114 of the second angle adjustment member 104, and a shoulder bolt 116 for forming a rotating shaft is inserted through a through hole formed in the bottom surface of the recess 115. . The front end of the shoulder bolt 116 is screwed to the vertical plate 110 of the first angle adjusting member 103.
In addition, three through holes are formed in the vertical plate 114 of the second angle adjusting member 104, and a lock screw 117 is inserted into each through hole. The tip of each locking screw 117 is screwed to the vertical plate 110 of the first angle adjusting member 103.
A through hole is formed in the upper part of the right side surface of the second angle adjusting member 104, and an adjusting screw 118 is inserted through the through hole. A coil spring 119 is inserted into the adjustment screw 118, and the tip thereof is screwed into a nut 120 embedded in the upper part of the right side surface of the first angle adjustment member 103.
Further, a through hole 121 is formed in the vertical plate 114 of the second angle adjustment member 104, and the head of the adjustment screw 111 inserted through the vertical plate 110 of the first angle adjustment member 103 is exposed. (FIG. 16).

Hereinafter, a method for adjusting the angle of the crystal holder 100 will be described.
First, the three locking screws 109 engaged with the top plate 105 of the first angle adjusting member 103 are removed, so that the angle can be adjusted.
Next, a tool such as a hexagon wrench is inserted through the through-hole 121 formed in the vertical plate 114 of the second angle adjustment member 104, and the adjustment screw 111 is rotated left and right. As the adjustment screw 111 rotates, the nut 113 on the crystal holding member 102 side moves back and forth, and as a result, the crystal holding member 102 rotates left and right (rotating direction) around the first shoulder bolt 107.
When the necessary angle adjustment with respect to the rotation direction is completed, the three locking screws 109 are tightened again to fix the angle of the crystal holding member 102.

Next, the three locking screws 117 engaged with the vertical plate 114 of the second angle adjusting member 104 are removed, and the angle can be adjusted.
Next, the adjustment screw 118 engaged with the right side surface of the second angle adjustment member 104 is rotated left and right using a tool. As the adjusting screw 118 rotates, the nut 120 on the first angle adjusting member 103 side moves back and forth. As a result, the first angle adjusting member 103 moves up and down (in the tilt direction) around the shoulder bolt 116. Rotate.
When the necessary angle adjustment for the tilt direction is completed, the three locking screws 117 are tightened again to fix the angle of the first angle adjusting member 103.

  The crystal holder 100 rotates the crystal holding member 102 by a necessary amount in the rotation direction by rotating the adjusting screw 111 of the first angle adjusting member 103 as described above, and also adjusts the adjusting screw of the second angle adjusting member 104. By rotating 118, the first angle adjusting member 103 is rotated by a necessary amount in the tilt direction. As a result, the direction of the crystal contained in the Pockels cell 101 can be adjusted up, down, left and right.

  However, in the case of this conventional crystal holder 100, the angle of the Pockels cell 101 is fixed by tightening a plurality of locking screws 109 and 117 provided at locations away from the rotation axis formed by the shoulder bolts 107 and 116. Because of this mechanism, the fixing work takes a lot of trouble, as well as the positional deviation caused by the torque generated when tightening the locking screws 109 and 117, and the angle between the adjusted members Was likely to go crazy.

  The present invention has been devised to solve the above-mentioned problems of conventional crystal holders. After the crystal angle adjustment is completed, the positional displacement between the members is caused by the torque accompanying the rotation of the locking screw. The object is to provide a crystal holder that does not occur.

  In order to achieve the above object, a crystal holder according to claim 1 includes a crystal holding member that holds a unit including an electro-optic crystal, and an angle adjusting member, and a through hole formed in the angle adjusting member. Inserting the shoulder bolt and screwing the tip of the shoulder bolt into the screw hole of the crystal holding member, the two members are rotatably engaged with each other, and the tip of the adjustment screw fixed in a rotatable state to the angle adjustment member is A crystal holder having a structure in which the crystal holding member rotates in a predetermined direction around the body of the shoulder bolt as the adjustment screw rotates by being screwed to a screw receiving member provided on the crystal holding member. And the said through-hole is equipped with the shape which connected the small diameter part into which the trunk | drum of a shoulder bolt is rotatably inserted, and the large diameter part in which the head of a shoulder bolt is accommodated concentrically, the above The shoulder bolt head is engaged with a step formed at the boundary between the diameter portion and the large diameter portion, and a lock washer is placed on the surface of the angle adjusting member. At this time, the lock washer and the shoulder A gap is formed between the head of the bolt and the two are maintained in a non-contact state. A lock screw is inserted through the through hole of the lock washer, and the tip is formed at the center of the head of the shoulder bolt. When the screw is screwed into the screw hole, the lock washer is pressed against the surface of the angle adjusting member by the head of the lock screw, so that the crystal holding member and the angle adjusting member are fixed.

  The crystal holder according to claim 2 includes a crystal holding member for holding a unit including an electro-optic crystal, and an angle adjusting member, and a shoulder bolt is inserted into a through hole formed in the angle adjusting member, and a tip thereof Is screwed into the screw hole of the crystal holding member so that the two members are rotatably engaged with each other, and the tip of the adjustment screw fixed to the angle adjusting member in a rotatable state is attached to the screw provided on the crystal holding member. A crystal holder having a structure in which the crystal holding member rotates in a predetermined direction around the body of the shoulder bolt as the adjustment screw rotates by being screwed to the receiving member, A small diameter part that allows the body of the shoulder bolt to rotate freely, a medium diameter part that accommodates the head of the shoulder bolt, and a large diameter part that accommodates the lock washer are concentrically connected. And a head portion of the shoulder bolt is engaged with a first step portion formed at the boundary between the small diameter portion and the medium diameter portion, and a second portion formed at the boundary between the medium diameter portion and the large diameter portion. A locking washer is placed on the stepped portion, and a gap is formed between the locking washer and the head of the shoulder bolt at this time, and the two are maintained in a non-contact state. The through hole of the locking washer When the lock screw is inserted into the screw hole and screwed into the screw hole formed at the center of the head of the shoulder bolt, the lock washer is pressed against the second step by the head of the lock screw. The crystal holding member and the angle adjusting member are fixed.

  The crystal holder according to claim 3 is the crystal holder according to claim 1 or 2, wherein a screw receiving member provided on the crystal holding member is rotatable in the same direction as the rotation direction of the crystal holding member. It is characterized by being arranged in a simple state.

  The crystal holder according to claim 4 includes a crystal holding member that holds a unit including an electro-optic crystal, a first angle adjustment member, and a second angle adjustment member, and the first angle adjustment member includes: The shoulder bolt is inserted into the formed through hole, and the tip of the shoulder bolt is screwed into the screw hole of the crystal holding member so that the two members are rotatably engaged with each other, and the first angle adjusting member is rotatable. By screwing the tip of the fixed adjustment screw into a screw receiving member provided on the crystal holding member, the crystal holding member moves in a predetermined direction around the shoulder bolt body as the adjustment screw rotates. The shoulder bolt is inserted into the through hole formed in the second angle adjusting member, and the tip of the shoulder bolt is screwed into the screw hole of the first angle adjusting member. Second angle adjustment By screwing the tip of the adjustment screw fixed to the material in a rotatable state with a screw receiving member provided on the first angle adjustment member, the first angle adjustment member is rotated along with the rotation of the adjustment screw. A crystal holder having a structure that rotates in a predetermined direction about a body portion of the shoulder bolt, wherein the through hole of the first angle adjusting member has a small diameter through which the body portion of the shoulder bolt is rotatably inserted. And the shoulder bolt head at the step formed at the boundary between the small diameter portion and the large diameter portion. The locking washer is placed on the surface of the first angle adjusting member, and a gap is formed between the locking washer and the head of the shoulder bolt so that they are not in contact with each other. This lock is maintained When a lock screw is inserted into the through hole of the shear and the tip of the lock screw is screwed into a screw hole formed at the center of the head of the shoulder bolt, the lock washer becomes the first angle adjusting member by the head of the lock screw. The crystal holding member and the first angle adjusting member are fixed, and the through hole of the second angle adjusting member has a small diameter portion through which the body of the shoulder bolt is rotatably inserted. The shoulder bolt head is concentrically connected to the large diameter portion, and the shoulder bolt head is formed on the step formed at the boundary between the small diameter portion and the large diameter portion. The lock washer is placed on the surface of the second angle adjusting member, and a gap is formed between the lock washer and the head of the shoulder bolt so that they are not in contact with each other. This lock washer is maintained When the lock screw is inserted into the through hole of the first screw and the tip of the lock screw is screwed into the screw hole formed at the center of the head of the shoulder bolt, the lock washer is moved to the second angle adjusting member by the head of the lock screw. The first angle adjusting member and the second angle adjusting member are fixed by being pressed against the surface.

  The crystal holder according to claim 5 includes a crystal holding member that holds a unit including an electro-optic crystal, a first angle adjustment member, and a second angle adjustment member, and the first angle adjustment member includes: The shoulder bolt is inserted into the formed through hole, and the tip of the shoulder bolt is screwed into the screw hole of the crystal holding member so that the two members are rotatably engaged with each other, and the first angle adjusting member is rotatable. By screwing the tip of the fixed adjustment screw into a screw receiving member provided on the crystal holding member, the crystal holding member moves in a predetermined direction around the shoulder bolt body as the adjustment screw rotates. The shoulder bolt is inserted into the through hole formed in the second angle adjusting member, and the tip of the shoulder bolt is screwed into the screw hole of the first angle adjusting member. Second angle adjustment By screwing the tip of the adjustment screw fixed to the material in a rotatable state with a screw receiving member provided on the first angle adjustment member, the first angle adjustment member is rotated along with the rotation of the adjustment screw. A crystal holder having a structure that rotates in a predetermined direction about a body portion of the shoulder bolt, wherein the through hole of the first angle adjusting member has a small diameter through which the body portion of the shoulder bolt is rotatably inserted. Part, a medium diameter part in which the head of the shoulder bolt is accommodated, and a large diameter part in which the lock washer is accommodated are connected concentrically, The head of the shoulder bolt is engaged with the first step formed, and a lock washer is placed on the second step formed at the boundary between the medium diameter portion and the large diameter portion. When the lock washer and shoulder bolt head A gap is formed between the two and the two are maintained in a non-contact state. A lock screw is inserted through the through hole of the lock washer, and the tip of the lock screw is screwed into a screw hole formed in the center of the head of the shoulder bolt. And the lock washer is pressed against the second step by the head of the lock screw, whereby the crystal holding member and the first angle adjusting member are fixed, and the through hole of the second angle adjusting member is A small diameter part that allows the body of the shoulder bolt to rotate freely, a medium diameter part that accommodates the head of the shoulder bolt, and a large diameter part that accommodates the lock washer are concentrically connected. The shoulder bolt head is engaged with a first step portion formed at the boundary between the small diameter portion and the medium diameter portion, and a first step formed at the boundary between the medium diameter portion and the large diameter portion. The lock washer is placed on the step 2 and A gap is formed between the lock washer and the head of the shoulder bolt so that they are kept in a non-contact state. A lock screw is inserted into the through hole of the lock washer, and the tip of the head is the head of the shoulder bolt. When screwed into the screw hole formed in the center of the portion, the lock washer is pressed against the second step by the head of the lock screw, and thus the first angle adjustment member and the second angle adjustment member Is characterized by being fixed.

  The crystal holder according to claim 6 is the crystal holder according to claim 4 or 5, wherein a screw receiving member provided on the crystal holding member is rotatable in the same direction as the rotation direction of the crystal holding member. The screw receiving member provided on the first angle adjusting member is arranged in a state in which the screw receiving member is rotatable in the same direction as the rotation direction of the first angle adjusting member. Yes.

3. The crystal holder according to claim 1 or 2, wherein a lock screw is screwed into a screw hole formed at a center of a head of a shoulder bolt serving as a rotation axis of the crystal holding member, and the angle of the lock washer is adjusted. The system adopts a method of fixing the angle between both members by pressing the member, and a gap is formed between the shoulder bolt and the lock washer, so that a non-contact state between the two is secured. Even if the screw is rotated, no excessive torque is applied to the angle adjusting member.
For this reason, when fixing a crystal holding member and an angle adjustment member, it can prevent effectively that the angle between both the members adjusted with great effort shifts.
In addition, since the fixing of the angle between the two members is completed by tightening one locking screw, the fixing operation can be simplified.

  In the crystal holder according to claim 3, since the screw receiving member paired with the adjusting screw is arranged in a state in which the screw receiving member can rotate in the same direction as the rotation direction of the crystal holding member, the angle adjustment with the crystal holding member is performed. Even if the angle between the members is displaced, this is absorbed by the rotation of the screw receiving member, and the angle between the adjustment screw and the adjustment screw is maintained, so that the rotation of the adjustment screw can be prevented from being hindered.

In the crystal holder according to claim 4 or 5, a lock screw is screwed into a screw hole formed at the center of the head of a shoulder bolt serving as a rotation axis of the crystal holding member, and the lock washer is The angle adjustment member is pressed to fix the angle between the two members, and a gap is formed between the shoulder bolt and the lock washer, ensuring a non-contact state between the two. Therefore, no extra torque is applied to the first angle adjusting member even if the locking screw is rotated.
For this reason, when the angle between the crystal holding member and the first angle adjusting member is fixed, it is possible to effectively prevent the angle between the two members adjusted with great effort from shifting.
In addition, a locking screw is screwed into a screw hole formed in the center of the head of the shoulder bolt serving as the rotation axis of the first angle adjustment member, and both the lock washer is pressed against the second angle adjustment member. Since the angle between the members is fixed and a gap is formed between the shoulder bolt and the lock washer, and a non-contact state between the two is secured, the lock screw can be rotated. No excessive torque is applied to the second angle adjusting member.
For this reason, when fixing the angle between the 1st angle adjustment member and the 2nd angle adjustment member, it can prevent effectively that the angle between both the members adjusted much deviates.
Furthermore, since the fixing of the angle between the members is completed by tightening one locking screw, the fixing operation can be greatly simplified.

The crystal holder according to claim 6, wherein the screw receiving member that is paired with the adjusting screw engaged with the first angle adjusting member is arranged so as to be rotatable in the same direction as the rotation direction of the crystal holding member. Therefore, even if the angle between the crystal holding member and the first angle adjusting member is displaced, this is absorbed by the rotation of the screw receiving member, and the angle between the adjusting screw is held and adjusted. This can prevent the screw from rotating.
In addition, since the screw receiving member that makes a pair with the adjusting screw engaged with the second angle adjusting member is arranged in a state that it can rotate in the same direction as the rotation direction of the first angle adjusting member, Even if the angle between the angle adjusting member and the second angle adjusting member is displaced, this is absorbed by the rotation of the screw receiving member, and the angle between the adjusting screw and the adjusting screw is maintained, which hinders the rotation of the adjusting screw. Can be prevented.

FIG. 1 is a perspective view showing the front side of the crystal holder 10 according to the present invention, and FIG. 2 is a perspective view showing the back side thereof.
The crystal holder 10 includes a crystal holding member 12, a first angle adjusting member 14, and a second angle adjusting member 16. Each member is made of aluminum.

FIG. 3 is a perspective view showing a state in which each member is disassembled.
The crystal holding member 12 has a shape in which a substantially cylindrical cutout portion 18 is provided while being based on a rectangular parallelepiped shape. A crystal unit such as a Pockels cell is accommodated in the notch 18. In addition, when storing cube-shaped KTP and BBO crystals, a storage case suitable for each shape may be manufactured.
A screw hole 20 for screwing a shoulder bolt is formed in the center of the ceiling surface 19 of the crystal holding member 12.
Further, a recess 22 for accommodating a cylindrical nut 21 is formed next to the screw hole 20.
Further, a recess 24 for inserting an adjustment screw is formed on the inner side surface of the crystal holding member 12.

The first angle adjusting member 14 has a substantially L-shaped cross section in which a top plate 25 and a vertical plate 26 are connected at a right angle, and a multistage through hole 27 is formed at the center of the top plate 25.
Further, a screw hole 28 for screwing a shoulder bolt, a through hole 29 for inserting an adjustment screw, and a recess 31 for accommodating the cylindrical nut 30 are formed on the inner surface of the vertical plate 26.
Further, a notch 32 is formed in the back side joining portion of the vertical plate 26 and the top plate 25, and a recess 33 for inserting an adjusting screw is formed on the bottom surface of the notch 32.

The second angle adjusting member 16 has a substantially L-shaped cross section in which a vertical plate 34 and a bottom plate 35 are connected, and a multistage through hole 36 is formed at the center of the vertical plate 34.
Further, a through hole 37 is formed in the vertical plate 34 at a position corresponding to the through hole 29 of the first angle adjusting member 14.
Further, a protruding piece 38 is formed on the vertical plate 34 so as to be superimposed on the notch 32 of the first angle adjusting member 14, and a through hole 39 is formed in the protruding piece 38.
Further, the bottom plate 35 is formed with a through hole 40 through which a fixing bolt is inserted.

Next, a method of engaging the crystal holding member 12 and the first angle adjusting member 14 will be described with reference to FIG.
First, the cylindrical nut 21 is loaded in the nut housing recess 22 of the crystal holding member 12.
As shown in FIG. 5, the nut housing recess 22 intersects the adjustment screw insertion recess 24 in the crystal holding member 12.

Next, the adjusting screw is rotatably fixed to the adjusting screw insertion through hole 29 formed in the vertical plate 26 of the first angle adjusting member 14.
That is, as shown in FIG. 6 (a), the adjustment screw insertion through hole 29 has a shape in which the large diameter portion and the small diameter portion are communicated with each other, and a washer 42 is provided on the step portion 41 formed at the boundary. The tip of the screw head 43 is inserted into the washer 42 from the outer surface side.
Further, the screw rod portion 44 is inserted into the through hole 29 from the inner surface side. A screw hole 45 is formed in the tip surface of the screw rod portion 44, and the tip of the screw head 43 is screwed into the screw hole 45, and the two are fixed to each other through a predetermined adhesive.
As a result, as shown in FIG. 6B, an adjustment screw 46 is formed that is rotatably fixed to the first angle adjustment member 14.
A flange 47 is formed at the tip of the screw rod portion 44, and this abuts against the opening peripheral edge of the through hole 29, so that the adjusting screw 46 does not fall off to the outer surface side. Further, since the screw head 43 abuts on the step portion 41 via the washer 42, the adjustment screw 46 does not fall off to the inner surface side.
A coil spring 48 and a washer 49 are inserted through the adjustment screw 46.

Next, the adjusting screw 46 is inserted into the recess 24 of the crystal holding member 12 and screwed into the through screw hole 21a of the cylindrical nut 21 loaded in the recess 22.
As a result, as shown in FIG. 7, the coil spring 48 and the washer 49 inserted through the adjustment screw 46 abut on the stepped portion in the recess 24, and the screw rod portion 44 penetrates the cylindrical nut 21.
At this point, a predetermined space 50 is secured between the rear end of the screw rod portion 44 and the bottom surface of the recess 24.

Next, as shown in FIG. 8, a wave washer 51, a shoulder bolt 52, a lock washer 53, a small diameter washer 54, and a lock are formed in the multistage through hole 27 formed in the top plate 25 of the first angle adjustment member 14. Install the screw 55.
The multistage through-hole 27 has a shape in which a small diameter portion 56, a medium diameter portion 57, and a large diameter portion 58 are concentrically connected to each other, and a first step is formed at the boundary between the small diameter portion 56 and the medium diameter portion 57. A portion 59 is formed, and a second stepped portion 60 is formed at the boundary between the medium diameter portion 57 and the large diameter portion 58.

After the wave washer 51 is placed on the first step portion 59, the tip of the shoulder bolt 52 is screwed into the screw hole 20 formed in the ceiling surface 19 of the crystal holding member 12, as shown in FIG. As described above, the ceiling surface 19 of the crystal holding member 12 is engaged with the top plate 25 of the first angle adjusting member 14 in close contact.
And since the diameter of the trunk | drum 52b of the shoulder bolt 52 is a little smaller than the small diameter part 56 of the multistage type through-hole 27, the crystal holding member 12 is a shoulder bolt with respect to the top plate 25 of the 1st angle adjustment member 14. The body 52b of 52 is engaged with the shaft 52b so as to be rotatable.

Next, a lock washer 53 is placed on the second step portion 60, and a small-diameter washer 54 is stacked thereon, and a lock screw 55 is inserted through the through hole of each washer.
Next, the tip of the locking screw 55 is screwed into the screw hole 52c formed in the center of the head 52a of the shoulder bolt 52.
At this time, the dimensions of each part are set so that a slight gap 61 is formed between the lock washer 53 and the head 52a of the shoulder bolt 52.

Next, a method of engaging the first angle adjusting member 14 and the second angle adjusting member 16 will be described with reference to FIG.
First, the cylindrical nut 30 is loaded in the nut housing recess 31 of the first angle adjusting member 14.
Although not shown, the nut housing recess 31 intersects the adjustment screw insertion recess 33 in the top plate 25 of the first angle adjustment member 14.

Next, the adjustment screw is rotatably fixed to the adjustment screw insertion through hole 39 formed in the protruding piece 38 of the second angle adjustment member 16.
That is, as shown in FIG. 11 (a), the adjustment screw insertion through hole 39 has a shape in which the large diameter portion and the small diameter portion are communicated, and a washer 63 is provided at the step portion 62 formed at the boundary. At the same time, the tip of the screw head 64 is inserted into the washer 63 from the outer surface side.
Further, the screw rod portion 65 is inserted into the through hole 39 from the inner surface side. A screw hole 66 is formed in the tip surface of the screw rod portion 65, and the tip of the screw head 64 is screwed into the screw hole 66, and the two are fixed to each other through a predetermined adhesive.
As a result, as shown in FIG. 11B, an adjustment screw 67 is formed that is rotatably fixed to the protruding piece 38 of the second angle adjustment member 16.
A flange portion 68 is formed at the tip of the screw rod portion 65, and this abuts against the opening peripheral edge portion of the through hole 39, so that the adjustment screw 67 does not fall off to the outer surface side. Further, since the screw head 64 abuts on the stepped portion 62 via the washer 63, the adjustment screw 67 does not fall off to the inner surface side.
A coil spring 69 and a washer 70 are inserted through the adjustment screw 67.

Next, the adjustment screw 67 is inserted into the recess 33 of the first angle adjustment member 14 and screwed into the through screw hole 30a of the cylindrical nut 30 loaded in the recess 31.
As a result, as shown in FIG. 12, the coil spring 69 and the washer 70 inserted through the adjustment screw 67 abut on the stepped portion in the recess 33, and the screw rod portion 65 penetrates the cylindrical nut 30.
At this time, a predetermined space 71 is secured between the rear end of the screw rod portion 65 and the bottom surface of the recess 33.

Next, as shown in FIG. 13, a wave washer 72, a shoulder bolt 73, a lock washer 74, a small diameter washer 75, and a lock are formed in the multistage through hole 36 formed in the vertical plate 34 of the second angle adjustment member 16. Install the screw 76.
The multistage through hole 36 has a shape in which a small diameter portion 77, a medium diameter portion 78, and a large diameter portion 79 are concentrically connected, and the first step is formed at the boundary between the small diameter portion 77 and the medium diameter portion 78. A portion 80 is formed, and a second step portion 81 is formed at the boundary between the medium diameter portion 78 and the large diameter portion 79.

After the wave washer 72 is placed on the first step 80, the front end of the shoulder bolt 73 is screwed into the screw hole 28 formed in the vertical plate 26 of the first angle adjusting member 14. The vertical plate 26 of the first angle adjusting member 14 is engaged with the vertical plate 34 of the second angle adjusting member 16 in close contact.
Since the diameter of the body portion 73b of the shoulder bolt 73 is slightly smaller than the small diameter portion 77 of the multistage through-hole 36, the first angle adjusting member 14 is compared with the vertical plate 34 of the second angle adjusting member 16. Thus, the shoulder bolt 73 is engaged with the body 73b of the shoulder bolt 73 so as to be rotatable.

Next, a lock washer 74 is brought into contact with the second step portion 81, and a small-diameter washer 75 is placed thereon, and a lock screw 76 is inserted into the through hole of each washer.
Next, the tip of the locking screw 76 is screwed into the screw hole 73c formed at the center of the head 73a of the shoulder bolt 73.
At this time, the dimensions of each part are set so that a slight gap 82 is formed between the lock washer 74 and the head 73a of the shoulder bolt 73.

When adjusting the rotation angle of the crystal holder 10, first, the locking screw 55 of the first angle adjusting member 14 is loosened so that the crystal holding member 12 and the first angle adjusting member 14 are rotatable. .
Next, a tool such as a hexagon wrench is inserted from a through-hole 37 formed in the vertical plate 34 of the second angle adjusting member 16, and the adjusting screw 46 engaged with the vertical plate 26 of the first angle adjusting member 14. Rotate the left and right by the required amount.

For example, when the adjustment screw 46 is rotated clockwise, the cylindrical nut 21 moves to the right as apparent from FIG. 7, and as a result, the crystal holding member 12 rotates to the left about the shoulder bolt 52. Will be.
On the other hand, when the adjustment screw 46 is rotated counterclockwise, the cylindrical nut 21 is moved in the left direction, and as a result, the crystal holding member 12 is rotated in the right direction around the shoulder bolt 52.

As described above, the cylindrical nut 21 is used as a screw receiving member of the adjusting screw 46, and the nut 21 is rotatably loaded in the cylindrical recess 22. Further, the rotational axis of the cylindrical nut 21 is set to be parallel to the rotational axis of the crystal holding member 12.
As a result, even if the angle between the crystal holding member 12 and the first angle adjusting member 14 is displaced, the cylindrical nut 21 is absorbed by the rotation, and the adjustment screw 46 and the through screw hole 21a of the cylindrical nut 21 are absorbed. This angle is maintained at 180 degrees, so that the rotation of the adjusting screw 46 is not hindered.

After the necessary angle adjustment is completed, when the locking screw 55 is tightened, the locking washer 53 is strongly pressed against the second step portion 60 of the multi-stage through-hole 27, and the friction force causes the crystal holding member 12 and the The space between the angle adjusting members 14 is fixed.
This locking is realized by screwing a single locking screw 55 into a screw hole 52c formed in the center of the head of the shoulder bolt 52 that functions as the center axis of rotation.
Thus, as a result of the rotation of the locking screw 55 coaxially with the rotation axis of the crystal holding member 12, a strong torque is obtained as in the case of screwing a plurality of locking screws arranged outside the rotation axis. Therefore, it is possible to effectively prevent the position between the two members adjusted with great effort from being displaced.
In addition, since the locking is completed with one screwing, there is an advantage that the efficiency of the fixing work after the angle adjustment can be realized.

As described above, since the vertical plate 26 of the first angle adjusting member 14 is sandwiched between the flange portion 47 and the washer 42 of the adjusting screw 46 and the adjusting screw 46 is prevented from falling off, the adjusting screw 46 is rotated. The cylindrical nut 21 is surely reciprocated.
For this reason, even after the locking screw 55 is once tightened and locked, the angle between the crystal holding member 12 and the first angle adjusting member 14 can be finely adjusted by turning the adjusting screw 46 with a strong force. Become.

When adjusting the tilt angle of the crystal holder 10, the locking screw 76 of the second angle adjusting member 16 is first loosened so that the first angle adjusting member 14 and the second angle adjusting member 16 can be rotated. Put it in a state.
Next, the adjusting screw 67 engaged with the protruding piece 38 of the second angle adjusting member 16 is rotated to the left and right by a necessary amount by a tool such as a hexagon wrench.

For example, when the adjustment screw 67 is rotated clockwise, as shown in FIG. 12, the cylindrical nut 30 moves to the right, and as a result, the first angle adjustment member 14 moves to the right with the shoulder bolt 73 as the axis. Will rotate in the direction.
On the other hand, when the adjustment screw 67 is rotated counterclockwise, the cylindrical nut 30 moves to the left, and as a result, the first angle adjustment member 14 rotates to the left around the shoulder bolt 73. It becomes.

As described above, the cylindrical nut 30 is used as the screw receiving member of the adjusting screw 67, and the nut 30 is rotatably loaded in the cylindrical recess 31. The rotation axis of the cylindrical nut 30 is set to be parallel to the rotation axis of the first angle adjustment member 14.
As a result, even if the angle between the first angle adjusting member 14 and the second angle adjusting member 16 is displaced, this is absorbed by the rotation of the cylindrical nut 30, and the adjusting screw 67 and the through screw of the cylindrical nut 30 are absorbed. Since the angle between the holes 30a is maintained at 180 degrees, it does not hinder the rotation of the adjusting screw 67.

After the necessary angle adjustment is completed, when the lock screw 76 is tightened, the lock washer 74 is pressed against the second step portion 81 of the multi-stage through hole 36, and the first angle adjusting member 14 is caused by the frictional force thereof. And the second angle adjusting member 16 are fixed.
This locking is realized by screwing one locking screw 76 into a screw hole 73c formed in the center of the head of the shoulder bolt 73 that functions as the center axis of rotation.
As described above, as a result of the rotation of the locking screw 76 coaxially with the rotation axis of the first angle adjusting member 14, a plurality of locking screws arranged outside the rotation axis are screwed together. Therefore, it is possible to effectively prevent the position between the two members adjusted with great effort from being displaced.
Moreover, since it completes by screwing in one place, there is also an advantage that the efficiency of the fixing work after the angle adjustment can be realized.

As described above, since the protruding piece 38 of the second angle adjusting member 16 is sandwiched between the flange portion 68 and the washer 63 of the adjusting screw 67 and the adjusting screw 67 is prevented from falling off, the adjusting screw 67 is rotated. The cylindrical nut 30 is surely reciprocated.
For this reason, even after the lock screw 76 is once tightened and locked, the angle between the first angle adjustment member 14 and the second angle adjustment member 16 can be finely adjusted by turning the adjustment screw 67 with a strong force. Is possible.

Since the crystal holder 10 can adjust the angle in the tilt direction and the rotation direction as described above, when holding a crystal unit that requires angle adjustment in two different axial directions, such as a Pockels cell, for example. It is particularly effective.
Alternatively, a crystal unit obtained by integrating two crystals with different axial directions, such as a BBO crystal and a KTP crystal, is sandwiched by the crystal holding member 12, and the angle adjustment in the direction required for each crystal is performed. For example, space can be saved as compared with the case where each crystal unit is installed separately.
However, the present invention is not necessarily limited to the configuration capable of adjusting the angle in two axes, and includes a crystal holding member 12 and a first angle adjusting member 14 and capable of only adjusting the angle in one axis. It can also be applied to the crystal holder.

As described above, the top plate 25 of the first angle adjusting member 14 is formed with the multistage through hole 27 having the small diameter portion 56, the medium diameter portion 57 and the large diameter portion 58, and the shoulder bolt By storing the heads 52a of 52 and storing the lock washer 53 in the large diameter portion 58, it is possible to avoid the lock washer 53 from protruding greatly on the surface of the top plate 25.
However, the formation of the large diameter portion 58 may be omitted, and the lock washer 53 may be placed directly on the surface of the top plate 25.
Similarly, the lock washer 74 may be placed directly on the surface of the vertical plate 34 without forming the large diameter portion 79 on the vertical plate 34 of the second angle adjusting member 16.

It is a perspective view which shows the front side of the crystal holder which concerns on this invention. It is a perspective view which shows the back side of the crystal holder which concerns on this invention. It is a perspective view which shows the state which decomposed | disassembled the crystal holding member, the 1st angle adjustment member, and the 2nd angle adjustment member. It is a disassembled perspective view which shows the engagement method of a crystal holding member and a 1st angle adjustment member. It is a fragmentary sectional view which shows a mode that a cylindrical nut is loaded in the recessed part for nut accommodation of a crystal holding member. It is a fragmentary sectional view which shows a mode that an adjustment screw is rotatably fixed to a 1st angle adjustment member. It is a fragmentary sectional view showing the state where the adjustment screw engaged with the first angle adjustment member was screwed into the through screw hole of the cylindrical nut loaded in the recess of the crystal holding member. It is a fragmentary sectional view which shows a mode that a shoulder bolt, a lock washer, a lock screw, etc. are mounted | worn with the multistage type through-hole of a 1st angle adjustment member. It is a fragmentary sectional view which shows a mode that the shoulder bolt, the lock washer, the lock screw, etc. were attached to the multistage type through-hole of the 1st angle adjustment member. It is a disassembled perspective view which shows the engagement method of a 1st angle adjustment member and a 2nd angle adjustment member. It is a fragmentary sectional view which shows a mode that an adjustment screw is rotatably fixed to the protrusion piece of a 2nd angle adjustment member. It is a fragmentary sectional view which shows the state which screwed the adjustment screw engaged with the protrusion piece of the 2nd angle adjustment member to the penetration screw hole of the cylindrical nut with which the recessed part of the 1st angle adjustment member was loaded. It is a fragmentary sectional view which shows a mode that the shoulder bolt, the lock washer, the lock screw, etc. were attached to the multistage through hole of the second angle adjusting member. It is a top view which shows the front of the conventional crystal holder. It is a top view which shows the upper surface of the conventional crystal holder. It is a top view which shows the right side surface of the conventional crystal holder.

Explanation of symbols

10 Crystal holder
12 Crystal holding member
14 First angle adjustment member
16 Second angle adjustment member
18 Notch in crystal holding member
19 Ceiling surface of crystal holding member
20 Screw holes for shoulder bolts
21 Cylindrical nut
21a Cylindrical nut through screw hole
22 Nut storage recess
24 Recess for inserting adjustment screw
25 Top plate of first angle adjustment member
26 Vertical plate of the first angle adjustment member
27 Multi-stage through-hole of first angle adjustment member
28 Screw holes for shoulder bolts
29 Adjustment screw insertion through hole
30 Cylindrical nut
30a Cylindrical nut through screw hole
31 Nut storage recess
32 Notch
33 Adjustment screw insertion recess
34 Vertical plate
35 Bottom plate
36 Multi-stage through-hole
37 Through hole
38 Protruding piece
39 Adjustment screw insertion through hole
40 Through hole
41 steps
42 Washer
43 Screw head
44 Screw rod
45 Screw hole
46 Adjustment screw
47 Buttocks
48 Coil spring
49 Washer
50 spaces
51 washer
52 Shoulder bolt
52b Shoulder bolt body
52a Shoulder bolt head
52b Shoulder bolt body
52c Shoulder bolt screw hole
53 Lock washer
54 Small diameter washer
55 Locking screw
56 Small diameter part of multistage through hole
57 Medium diameter part of multistage through hole
58 Large diameter part of multi-stage through hole
59 First step of multi-stage through-hole
60 Second step of multistage through hole
61 Clearance
62 steps
63 Washer
64 Screw head
65 Screw rod
66 Screw hole
67 Adjustment screw
68 Buttocks
69 Coil spring
70 washer
71 space
72 washer
73 Shoulder bolt
73a Shoulder bolt head
73b Shoulder bolt body
73c Shoulder bolt screw hole
74 Lock washer
75 Small diameter washer
76 Locking screw
77 Small diameter part of multistage through hole
78 Medium diameter part of multi-stage through hole
79 Large diameter part of multistage through hole
80 First step of multi-stage through-hole
81 Second step of multi-stage through hole
82 Clearance

Claims (6)

A crystal holding member for holding a unit including an electro-optic crystal, and an angle adjusting member;
The shoulder bolt is inserted into the through hole formed in the angle adjustment member, and the tip of the shoulder bolt is screwed into the screw hole of the crystal holding member, so that both the members are rotatably engaged.
The tip of the adjustment screw fixed to the angle adjustment member in a rotatable state is screwed into a screw receiving member provided on the crystal holding member, so that the crystal holding member is connected to the shoulder bolt as the adjustment screw rotates. A crystal holder having a structure that rotates in a predetermined direction about the body portion of
The through hole has a shape in which a small diameter portion into which a body portion of a shoulder bolt is rotatably inserted and a large diameter portion in which a head portion of the shoulder bolt is accommodated concentrically,
The head portion of the shoulder bolt is engaged with a step portion formed at the boundary between the small diameter portion and the large diameter portion,
A lock washer is placed on the surface of the angle adjustment member,
At this time, a gap is formed between the lock washer and the head of the shoulder bolt, and the two are maintained in a non-contact state,
When the lock screw is inserted into the through hole of the lock washer and the tip of the lock screw is screwed into the screw hole formed at the center of the head of the shoulder bolt, the lock washer is turned into an angle adjusting member by the head of the lock screw. A crystal holder, wherein the crystal holding member and the angle adjusting member are fixed. A crystal holding member for holding a unit including an electro-optic crystal, and an angle adjusting member;
The shoulder bolt is inserted into the through hole formed in the angle adjustment member, and the tip of the shoulder bolt is screwed into the screw hole of the crystal holding member, so that both the members are rotatably engaged.
The tip of the adjustment screw fixed to the angle adjustment member in a rotatable state is screwed into a screw receiving member provided on the crystal holding member, so that the crystal holding member is connected to the shoulder bolt as the adjustment screw rotates. A crystal holder having a structure that rotates in a predetermined direction about the body portion of
The through hole concentrically communicates a small-diameter portion into which the body of the shoulder bolt is rotatably inserted, an intermediate-diameter portion in which the shoulder bolt head is accommodated, and a large-diameter portion in which the lock washer is accommodated. Has a shape,
The head portion of the shoulder bolt is engaged with the first step portion formed at the boundary between the small diameter portion and the medium diameter portion,
A lock washer is placed on the second step formed at the boundary between the medium diameter portion and the large diameter portion,
At this time, a gap is formed between the lock washer and the head of the shoulder bolt, and the two are maintained in a non-contact state,
When a lock screw is inserted into the through hole of the lock washer and the tip of the lock screw is screwed into a screw hole formed at the center of the head of the shoulder bolt, the lock washer is moved to the second position by the head of the lock screw. A crystal holder, wherein the crystal holding member and the angle adjusting member are fixed by being pressed by the stepped portion.   3. The crystal holder according to claim 1, wherein the screw receiving member provided on the crystal holding member is arranged in a state of being rotatable in the same direction as the rotation direction of the crystal holding member. A crystal holding member for holding a unit including an electro-optic crystal, a first angle adjusting member, and a second angle adjusting member;
The shoulder bolt is inserted into the through hole formed in the first angle adjusting member, and the tip of the shoulder bolt is screwed into the screw hole of the crystal holding member.
By screwing the tip of an adjustment screw fixed to the first angle adjusting member in a rotatable state with a screw receiving member provided on the crystal holding member, the crystal holding member is Rotate the shoulder bolt body in the specified direction around the axis,
The shoulder bolt is inserted into the through hole formed in the second angle adjusting member, and the tip of the shoulder bolt is screwed into the screw hole of the first angle adjusting member, so that both the members are rotatably engaged.
By screwing the tip of an adjustment screw fixed to the second angle adjustment member in a rotatable state with a screw receiving member provided on the first angle adjustment member, the first screw is rotated along with the rotation of the adjustment screw. A crystal holder having a structure in which the angle adjusting member rotates in a predetermined direction around the body of the shoulder bolt,
The through hole of the first angle adjusting member has a shape in which a small-diameter portion into which the body portion of the shoulder bolt is rotatably inserted and a large-diameter portion in which the head portion of the shoulder bolt is accommodated concentrically. And
The head portion of the shoulder bolt is engaged with a step portion formed at the boundary between the small diameter portion and the large diameter portion,
A lock washer is placed on the surface of the first angle adjustment member,
At this time, a gap is formed between the lock washer and the head of the shoulder bolt, and the two are maintained in a non-contact state,
When a lock screw is inserted into the through hole of the lock washer and the tip of the lock screw is screwed into a screw hole formed at the center of the head of the shoulder bolt, the lock washer is moved to the first position by the head of the lock screw. Pressed against the surface of the angle adjustment member, the crystal holding member and the first angle adjustment member are fixed,
The through hole of the second angle adjusting member has a shape in which a small-diameter portion into which the body portion of the shoulder bolt is rotatably inserted and a large-diameter portion in which the head portion of the shoulder bolt is accommodated concentrically. And
The head portion of the shoulder bolt is engaged with a step portion formed at the boundary between the small diameter portion and the large diameter portion,
A lock washer is placed on the surface of the second angle adjustment member,
At this time, a gap is formed between the lock washer and the head of the shoulder bolt, and the two are maintained in a non-contact state,
When a lock screw is inserted into the through hole of the lock washer and the tip of the lock screw is screwed into a screw hole formed at the center of the head of the shoulder bolt, the lock washer is moved to the second position by the head of the lock screw. A crystal holder, wherein the first angle adjusting member and the second angle adjusting member are fixed by being pressed against the surface of the angle adjusting member. A crystal holding member for holding a unit including an electro-optic crystal, a first angle adjusting member, and a second angle adjusting member;
The shoulder bolt is inserted into the through hole formed in the first angle adjusting member, and the tip of the shoulder bolt is screwed into the screw hole of the crystal holding member.
By screwing the tip of an adjustment screw fixed to the first angle adjusting member in a rotatable state with a screw receiving member provided on the crystal holding member, the crystal holding member is Rotate the shoulder bolt body in the specified direction around the axis,
The shoulder bolt is inserted into the through hole formed in the second angle adjusting member, and the tip of the shoulder bolt is screwed into the screw hole of the first angle adjusting member, so that both the members are rotatably engaged.
By screwing the tip of an adjustment screw fixed to the second angle adjustment member in a rotatable state with a screw receiving member provided on the first angle adjustment member, the first screw is rotated along with the rotation of the adjustment screw. A crystal holder having a structure in which the angle adjusting member rotates in a predetermined direction around the body of the shoulder bolt,
The through hole of the first angle adjusting member has a small diameter portion through which the body portion of the shoulder bolt is rotatably inserted, a middle diameter portion in which the head portion of the shoulder bolt is accommodated, and a large diameter in which the lock washer is accommodated. It has a shape that concentrically communicates the parts,
The head portion of the shoulder bolt is engaged with the first step portion formed at the boundary between the small diameter portion and the medium diameter portion,
A lock washer is placed on the second step formed at the boundary between the medium diameter portion and the large diameter portion,
At this time, a gap is formed between the lock washer and the head of the shoulder bolt, and the two are maintained in a non-contact state,
When a lock screw is inserted into the through hole of the lock washer and the tip of the lock screw is screwed into a screw hole formed at the center of the head of the shoulder bolt, the lock washer is moved to the second position by the head of the lock screw. Pressed by the stepped portion, the crystal holding member and the first angle adjusting member are fixed,
The through hole of the second angle adjusting member has a small diameter portion through which the body portion of the shoulder bolt is rotatably inserted, a medium diameter portion in which the shoulder bolt head portion is accommodated, and a large diameter in which the lock washer is accommodated. It has a shape that concentrically communicates the parts,
The head portion of the shoulder bolt is engaged with the first step portion formed at the boundary between the small diameter portion and the medium diameter portion,
A lock washer is placed on the second step formed at the boundary between the medium diameter portion and the large diameter portion,
At this time, a gap is formed between the lock washer and the head of the shoulder bolt, and the two are maintained in a non-contact state,
When a lock screw is inserted into the through hole of the lock washer and the tip of the lock screw is screwed into a screw hole formed at the center of the head of the shoulder bolt, the lock washer is moved to the second position by the head of the lock screw. A crystal holder, wherein the first angle adjusting member and the second angle adjusting member are fixed by being pressed by the stepped portion. The screw receiving member provided on the crystal holding member is arranged in a state that it can rotate in the same direction as the rotation direction of the crystal holding member,
The screw receiving member provided on the first angle adjusting member is arranged in a state of being rotatable in the same direction as the rotation direction of the first angle adjusting member. Crystal holder.

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