CN112234426A

CN112234426A - Precision adjusting device suitable for optical parametric oscillator

Info

Publication number: CN112234426A
Application number: CN202011147544.2A
Authority: CN
Inventors: 朱勇波
Original assignee: Zhejiang Deyang Precision Instrument Co ltd
Current assignee: Zhejiang Deyang Precision Instrument Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-01-15
Anticipated expiration: 2040-10-23
Also published as: CN112234426B

Abstract

The invention discloses a precise adjusting device suitable for an optical parametric oscillator, which comprises a transmission rod, a transmission disc, a fixing piece, a screw rod and an adjusting sleeve, wherein the adjusting sleeve is in threaded connection with the bottom of the screw rod provided with a threaded part, the bottom of the adjusting sleeve is rotatably connected with the fixing piece, one end of the fixing piece, which is positioned in the adjusting sleeve, is provided with a guide rod, the guide rod is inserted into the screw rod, a twill on the upper part of the screw rod provided with a twill part is meshed with a short-section vertical grain of the transmission disc, the transmission disc is connected with the bottom end of the transmission rod, the upper end of the transmission rod is fixedly connected with a clamp used for installing a load, the adjusting sleeve is rotated, the screw rod moves along the axial lead of the guide rod, the twill on the upper part of the screw rod can push the short-. According to the invention, the adjustment precision is amplified through the multiple thread fit on the screw rod, and the precise adjustment can be stably realized, so that the angle offset adjustment of the loaded crystal can be stably controlled.

Description

Precision adjusting device suitable for optical parametric oscillator

Technical Field

The invention relates to the technical field of optical parametric oscillators, in particular to a precision adjusting device suitable for the optical parametric oscillator.

Background

An optical parametric oscillator is a parametric oscillator that oscillates at an optical frequency. It converts the input laser light (so-called pump light) into two output lights of lower frequency (signal light and idler light) through second-order nonlinear optical interaction (crystal), and the sum of the frequencies of the two output lights is equal to the input optical frequency. Light can take place to refract when passing through the crystal, if only a crystal, different frequency's laser need correspond the crystal and change different angles, and different crystal angles then mean that the emergent light position can change, are unfavorable for follow-up use. It is generally necessary to adjust the laser position back by means of one or several pairs of crystals. The scheme that the prior art generally adopts is that each crystal is driven to rotate by one motor, so that the requirement on the motor is high, the consistency of the step lengths of different motors is very good, a plurality of high-precision motors are required to be matched for use, in addition, the scheme needs to use the motors as many as the number of the crystals, and the cost of the high-precision motors is high.

The initial position of the crystal on the substrate is an important fixed parameter. When the crystals are arranged at the initial positions, the initial deflection angle of each crystal needs to be adjusted, so that light can form a complete light path capable of realizing corresponding functions. Only by determining the initial deflection angle of the crystal, the subsequent output light position adjustment can be performed on the formed light path, and the adjustment is performed after the initial deflection adjustment is completed, regardless of synchronous adjustment or asynchronous adjustment. The existing deflection angle adjusting mode adopts the adjustment between threads, and can be adjusted in an all-round dead angle-free mode, but in the actual adjusting process, the initial deflection angle does not need a large offset, and a small deflection can form a large deflection error after experiencing a large optical path amount, so that a more precise and stable adjusting mode is needed, the refraction and reflection of light can be finely adjusted, and the use requirement is met.

Disclosure of Invention

The invention aims to provide a precision adjusting device suitable for an optical parametric oscillator, which can amplify and adjust precision through multiple thread matching on a screw rod, can stably realize precision adjustment and ensure that the angle deviation adjustment of a load crystal can be stably controlled.

The invention adopts the technical scheme that the invention provides a precise adjusting device suitable for an optical parametric oscillator, which comprises a transmission rod, a transmission disc, a fixing piece, a screw rod and an adjusting sleeve, wherein the adjusting sleeve is in threaded connection with the bottom of the screw rod provided with a threaded part, the bottom of the adjusting sleeve is rotationally connected with the fixing piece, one end of the fixing piece, which is positioned in the adjusting sleeve, is provided with a guide rod, the guide rod is inserted into the screw rod, so that the screw rod can only move along the axial lead direction of the guide rod, a twill on the upper part of the screw rod provided with a twill part is meshed with a short section of vertical grain of the transmission disc, the screw rod is vertical to the transmission disc, the transmission disc is connected with the bottom end of the transmission rod, the upper end of the transmission rod is fixedly connected with a clamp used for installing a load, and the adjusting, the screw rod moves along the axial lead direction of the guide rod, so that the inclined lines on the upper portion of the screw rod can push the short-section vertical lines at the occlusion position of the inclined line portion and the transmission disc to rotate the transmission disc, and the transmission disc is linked with the transmission rod to synchronously rotate, so that the offset angle of the load is adjusted.

The device further comprises a positioning device and a base plate, wherein a mounting ring is arranged on the base plate, a fixing part of the positioning device is mounted in the mounting ring, the transmission rod is inserted into the positioning device, the lower end of the transmission rod extends out of the fixing part, and the upper end of the transmission rod extends out of the dial part of the positioning device.

Furthermore, a bottom plate is further arranged below the base plate, the bottom of the fixing piece is fixedly connected with the bottom plate, a through hole is formed in the position, corresponding to the screw rod, of the base plate, and the aperture of the through hole is larger than the diameter of the inclined thread part, so that the screw rod is prevented from being abutted to the base plate when moving upwards.

Furthermore, the transmission rod comprises an insertion part, a rotating part and a limiting part, wherein the insertion part extends out of the fixing part and is inserted into the insertion hole of the transmission disc, so that the transmission disc and the transmission rod can rotate synchronously; the rotating part is positioned in a rotating cavity in the fixed part and can rotate freely; the limiting part is embedded in a limiting cavity of the dial part, so that the dial part and the transmission rod can synchronously rotate.

Furthermore, the central part of transmission dish is offered and is used for connecting the spliced eye of transfer line, the lateral wall of transmission dish has seted up short section vertical stripe, vertical stripe can with the interlock of twill on the lead screw, vertical stripe includes first vertical stripe, second vertical stripe.

Furthermore, the fixing piece is connected with the bottom of the adjusting sleeve in a rotating mode, the adjusting sleeve can rotate around the axis of the fixing piece, and the guide rod is arranged coaxially with the axis of the fixing piece.

Further, the guide rod is a polygonal prism, and the guide hole of the screw rod for accommodating the guide rod is matched with the guide rod, so that the guide rod and the screw rod do not rotate relatively.

Furthermore, a connecting and supporting structure is arranged between the substrate and the bottom plate, so that the horizontal structures of the substrate and the bottom plate are stable.

Furthermore, the base plate, on the bottom plate will positioner, the shared partial bearing structure of mounting follow the base plate, independently set up to an overall structure after the interception on the bottom plate, rotate during the overall structure, can adjust by a wide margin the skew angle of load thing.

Further, be provided with the transmission twill on the lateral wall of transmission dish, the inclination of transmission twill with the inclination of the twill of twill portion is unanimous, makes the transmission dish can with the meshing of twill portion.

The invention has the beneficial effects that:

1. the screw rod twill is matched with the short section vertical stripe of the transmission disc for use, the short section vertical stripe can be embedded in the screw rod twill, the twill moves in the vertical direction, and the vertical stripe moves in the horizontal direction; the screw rod descends, and the diagonal line pushes the vertical grains to rotate clockwise; the transmission disc is connected with the bottom of the transmission rod, the rotating part of the transmission rod penetrates through the positioning device to be fixedly connected with the clamp, and the clamp is used for mounting the load crystal, so that when the twill pushes the vertical grains to rotate, the load crystal rotates along with the vertical grains, and the deflection angle of the load crystal is adjusted.

2. The lower part of the screw rod is provided with fine threads which are matched with the adjusting sleeve for use, the center of a rod body of the screw rod is provided with a guide rod, the free end of the guide rod is inserted into the screw rod, the other end of the guide rod is fixedly connected with the fixing piece, so that the screw rod can only move up and down along the axial lead direction of the guide rod, the bottom of the adjusting sleeve is rotatably connected with the fixing piece, the adjusting sleeve can rotate around the central shaft of the fixing piece, and the height of the up-and-down movement of the screw rod can be adjusted; when the inclined angle of twill is fixed, the moving height of the screw rod is related to the width of the fine thread when the adjusting sleeve rotates for one circle, the fine thread can be amplified and adjusted and is not easy to loosen, and the relative position of the fine thread on the lower portion of the adjusting sleeve and the screw rod can be stably kept.

3. The method comprises the following steps that two layers of bearing plates are arranged, wherein a first layer is a base plate, a second layer is a bottom plate, a positioning device and a load crystal are installed on the base plate, an adjusting device is arranged on the bottom plate, and the base plate and the bottom plate are correspondingly arranged, so that inclined grains of a lead screw of the adjusting device can be embedded and used with vertical grains of a transmission disc; a plurality of connecting structures can be arranged between the two layers of bearing plates to ensure the horizontal stability of the bearing plates; the position of setting up the precision adjusting device can independently set up for whole loading board, makes it can link with synchronous adjustment motor or asynchronous control motor to adjust whole precision adjusting device and rotate, realize the angle skew adjustment by a wide margin.

4. The base plate is provided with a through hole for the screw rod to pass through, so that the situation that the screw rod abuts against the base plate in the ascending process and cannot be adjusted continuously is avoided, and the maximum height of the screw rod is not more than that of the clamp; the screw rod and the guide rod do not rotate relatively, so that the movement of the screw rod in the axis direction of the guide rod is always controlled by the fine thread, namely the movement of the screw rod in the axis direction is controlled by the rotation of the adjusting sleeve.

5. The center part of the transmission disc is provided with a splicing hole, the bottom of the transmission rod is provided with a splicing part, the splicing hole is a polygonal hole, the splicing part is a polygonal prism, and the number of the sides is more than two, so that splicing and linkage can be realized, the transmission rod can be driven by the rotating disc to rotate together, and the offset angle of a load crystal in the clamp on the transmission rod can be adjusted.

6. The positioning device comprises a fixing part and a display part, wherein a rotating part free rotation capable of accommodating the transmission rod is arranged in the fixing part, a limiting cavity is formed in the display part and used for accommodating the limiting part of the transmission rod, the display part can rotate together with the limiting part of the transmission rod, a dial gauge corresponding to the outer surface etching of the display part and the fixing part can be formed, reference data are formed, a data table is manufactured, and a worker can adjust the corresponding offset angle conveniently.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

FIG. 1 is a schematic structural diagram of a precision tuning apparatus suitable for an optical parametric oscillator according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an optical path of an optical parametric oscillator according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating positioning of an adjustable load of an optical parametric oscillator according to an embodiment of the present invention;

FIG. 4 is a front view of a driving rod and a fixture of a precision adjustment apparatus for an optical parametric oscillator according to an embodiment of the present invention;

FIG. 5 is a left side view of a driving rod and a fixture of a precision adjustment apparatus for an optical parametric oscillator according to an embodiment of the present invention;

FIG. 6 is a structural diagram of a transmission rod and a fixture of a precision adjustment apparatus for an optical parametric oscillator according to an embodiment of the present invention, as viewed from the bottom;

FIG. 7 is a structural diagram of a transmission rod of a precision adjustment apparatus for an optical parametric oscillator according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a positioning device and a driving plate of a precision adjustment apparatus for an optical parametric oscillator according to an embodiment of the present invention;

FIG. 9 is a top view of a positioning device of a fine tuning mechanism for an optical parametric oscillator, according to an embodiment of the present invention;

FIG. 10 is a top view of a drive plate of a precision adjustment mechanism for an optical parametric oscillator, according to an embodiment of the present invention;

FIG. 11 is a schematic view of a drive disk engaged with a conventional screw according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a lead screw and a tuning sleeve of a precision tuning apparatus for an optical parametric oscillator according to an embodiment of the present invention;

FIG. 13 is an enlarged view of the structure at A in FIG. 12 according to an embodiment of the present invention;

FIG. 14 is an enlarged view of the structure at B in FIG. 12 according to an embodiment of the present invention;

FIG. 15 is an enlarged view of the structure at C in FIG. 12 according to an embodiment of the present invention;

fig. 16 is a partial cross-sectional view of the bottom end of a lead screw of a fine adjustment apparatus for an optical parametric oscillator according to an embodiment of the present invention.

In the figure: 1. a transmission rod; 2. a clamp; 3. a drive plate; 4. a positioning device; 5. a load; 6. a substrate; 7. a fixing member; 8. a screw rod; 9. an adjustment sleeve; 10. a positioning ring; 11. a plug-in part; 12. a rotating part; 13. a limiting part; 31. inserting holes; 32. a first vertical stripe; 33. a second vertical stripe; 42. a rotation chamber; 43. a limiting cavity; 61. a mounting ring; 62. a base plate; 71. a guide bar; 81. a twill portion; 82. a smooth portion; 83. a threaded portion; 91. a limit ring.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention and the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is to be understood that the drawings in the following description are merely exemplary of the invention and that other drawings and embodiments can be derived by those skilled in the art without undue burden. The designation of the design orientation merely indicates the relative positional relationship between the respective members, not the absolute positional relationship.

An embodiment of the present invention provides a precision adjustment apparatus suitable for an optical parametric oscillator, please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13, fig. 14, fig. 15, and fig. 16, so as to facilitate explanation of the technical solution of the present invention. The precise adjusting device provided by the embodiment of the invention mainly comprises a transmission rod 1, a transmission disc 3, a fixing piece 7, a screw rod 8 and an adjusting sleeve 9. The bottom of the screw rod 8 is provided with a thread part 83 formed by fine threads, and the adjusting sleeve 9 is screwed with the fine threads of the thread part 83; the bottom of the adjusting sleeve 9 is rotatably connected with the fixing piece 7, one end of the fixing piece 7, which is positioned in the adjusting sleeve 9, is provided with a guide rod 71, and the free end of the guide rod 71 is inserted into a guide cavity of the screw rod 8, so that the screw rod 8 can only move along the axial lead direction of the guide rod 71, and the screw rod 8 and the guide rod 71 cannot rotate relatively; when the adjustment sleeve 9 is rotated, the lead screw 8 moves up or down along the guide rod 71. The upper portion of lead screw 8 is provided with the twill and forms twill portion 81, and the twill can interlock with the short section vertical line on the transmission dish 3, when the lead screw reciprocated, thereby the twill can promote vertical line and rotate transmission dish 3. The transmission disc 3 and the transmission rod 1 are arranged in a linkage mode, namely, the transmission disc and the transmission rod 1 can synchronously rotate, the upper end of the transmission rod 1 is fixedly connected with a clamp 2, and the clamp 2 is used for installing a load 5. Thus, by rotating the adjustment sleeve 9, the transmission disc 3 can be pushed by the screw 8 to rotate the offset angle of the load 5 fixedly mounted in the clamp 2. It can be understood that the fine threads are meshed tightly, the rotation of the adjusting sleeve 9 can be stabilized, further, the moving distance of the screw rod 8 is only the width of one fine thread when the adjusting sleeve 9 rotates for one circle, the adjusting precision can be enlarged, and therefore the precise adjustment of the offset angle is achieved.

In the embodiment of the present invention, the guide rod 71 and the screw rod 8 do not rotate relatively, and there are various implementation manners, one of which is to set the guide rod 71 to be a polygonal prism structure, and the guide hole in the screw rod 8 is set to match with the occupied space of the guide rod 71 and is completely abutted against the side wall of the guide rod 71, so that the guide rod 71 cannot rotate in the guide hole and can only be drawn out or inserted along the axial lead, that is, no relative rotation is generated between the guide rod 71 and the screw rod 8. As another embodiment, a limit structure may be additionally disposed on the outer side of the guide rod 71 to form a "rail" fit with the inner space of the guide hole, so that the guide rod 71 can only pass in and out along the "rail" and cannot rotate relative to the screw rod 8. It can be understood that, as long as the guide rod 71 cannot rotate in the guide hole, the effect of no relative rotation between the guide rod 71 and the screw rod 8 can be achieved, which has various implementation manners, and the requirement of no relative rotation between the guide rod 71 and the screw rod 8 can be met, and the embodiment of the present invention is only illustrated by way of example.

In the embodiment of the present invention, the mentioned twills are uniformly arranged on the twill part 81 of the screw rod 8, and fig. 12 is only a simple schematic diagram of the embodiment of the present invention, and since the adjusting range of the precision adjusting device of the embodiment of the present invention is relatively small, the twills can be arranged without fully spreading the upper part of the screw rod 8, so as to reduce the process, and when the twills are engaged, the reasonable position of the twills is selected for engagement. It can be understood that the twill can be fully paved on the upper part of the screw rod 8 to form the twill part 81, so that when the twill is meshed with the vertical line, the twill can be selected at will without specially selecting the position where the twill exists. The interval size of the twill should cooperate the setting with the interval size of the vertical line on the driving plate 3 for vertical line can be meshed with the twill together.

Taking the direction of the diagonal grain as an example in the embodiment of the invention, when the screw rod 8 moves upwards, the diagonal raised part below the raised part of the vertical grain generates a vertical upward thrust and a horizontal leftward thrust on the vertical grain at the occlusion part, when the horizontal leftward thrust is greater than the friction force between the diagonal grain and the vertical grain, the vertical grain is forced to rotate leftward, the transmission disc 3 synchronously rotates leftward (counterclockwise rotation when viewed from top to bottom), the screw rod 8 continuously moves upwards, the raised part of the vertical grain and the recessed part of the diagonal grain can be separated, and the raised part of the next vertical grain and the recessed part of the diagonal grain can form occlusion; when 8 downshifts of lead screw, in interlock department, the bellying of the twill of the bellying top of vertical line produces perpendicular decurrent thrust and the thrust that the level is to the right to vertical line, and when the thrust that the level is to the right was greater than twill and vertical line and the frictional force of oneself, vertical line atress rotates right, and transmission disc 3 rotates right in step (down seeing clockwise rotation from last), and 8 continuous downshifts of lead screw, and the bellying of vertical line will separate with the depressed part of twill, and the bellying of next vertical line will form the interlock with the depressed part of twill.

It can be understood that the thrust on the horizontal direction that the vertical lines received is relevant with the inclination of twill, and the inclination of adjustment twill can increase the horizontal thrust that the vertical lines received for the vertical lines can drive transmission disc 3 and rotate, thereby adjusts the skew angle of load 5.

Referring to fig. 1, the precision adjusting apparatus of the embodiment of the present invention is installed on a substrate 6 and a bottom plate 62, the substrate 6 is provided with a mounting ring 61 for installing the positioning apparatus 4; the bottom plate 62 is provided with the positioning part 7, and a connecting structure can be arranged between the base plate 6 and the bottom plate 62, so that the horizontal structure of the whole bearing plate is stable. It can be understood that the fine adjustment device in the embodiment of the present invention can achieve fine adjustment during the crystal adjustment process, and the large-angle offset adjustment needs to be achieved by an external structure other than the fine adjustment device. Part of the bearing structure occupied by the precise adjusting device of the embodiment of the invention can be cut off from the substrate 6 and the bottom plate 62 together with the connecting structure, and then independently arranged and packaged into an integral structure, and the adjusting position of the adjusting sleeve 9 is reserved, so that the integral structure is used as an object for angle offset adjustment, and large-angle offset adjustment is carried out through a driving motor or manual external force.

Referring to fig. 7 and 8, the transmission rod 1 includes an insertion part 11, a rotation part 12, and a limiting part 13; the central part of the transmission disc 3 is provided with an inserting groove 31; the positioning device 4 comprises a fixed part and a dial part, wherein a rotating cavity 42 is arranged in the fixed part, and a limiting cavity 43 is arranged in the dial part. The fixed part of the positioning device 4 is mounted in the mounting ring 61 such that the position of the positioning device 4 on the substrate 6 is fixed. The rotating cavity 42 in the fixing part can accommodate the rotating part 12, and the inserting part 11 can extend out of the rotating cavity 42 of the fixing part and be inserted into the inserting groove 31 of the transmission disc 3, so that the rotation of the transmission disc 3 can be synchronously performed with the transmission rod 1. The limiting cavity 43 of the dial part can be embedded with the limiting part 13, so that the limiting part 13 can drive the dial part to rotate together when rotating. Scales can be arranged on the covering lines of the outer surfaces of the dial plate part and the fixed part to indicate the rotating angle as reference data. It can be understood that a data reference table can be made according to the rotation angle data of each time, so that subsequent workers can adjust or find problems in time.

The upper end of the transmission rod 1 is a limiting part 13, and the limiting part 13 can be fixedly connected with the bottom of the clamp 2, so that the clamp 2 can synchronously rotate together with the transmission rod 1. The lower end of the transmission rod 1 is provided with an inserting part 11, the inserting part 11 can be a polygonal prism structure, and the corresponding inserting hole 31 can be matched with the inserting part 11, so that the inserting part 11 and the inserting hole 31 can be inserted and connected to form a linkage effect. The polygonal prism may be inscribed in a circle, the diameter of which is the diameter of the rotating part 12, so that the maximum upward displacement of the plugging hole 31 is the connecting end surface of the plugging part 11 and the rotating part 12. After the transmission disc 3 and the transmission rod 1 are inserted, the transmission disc 3 is perpendicular to the transmission rod 1, the transmission rod 1 is perpendicular to the base plate 6 and the bottom plate 62, and the base plate 6 and the bottom plate 62 of the screw rod 8 are perpendicular, so that the transmission disc 3 is perpendicularly meshed with the screw rod 8.

The diameter of the transmission disc 3 can be set according to actual conditions, please refer to fig. 1 and 8, and the minimum diameter of the transmission disc 3 should be larger than the diameter of the fixing part of the positioning device 4, so that the vertical lines of the transmission disc 3 can be engaged with the diagonal lines of the screw rod 8. Referring to fig. 10 and 11, compared with the engagement between the inclined threads and the vertical threads in the embodiment of the present invention, the engagement between the conventional threads changes the transmission direction of the driving force, so that the driving resistance is larger, and the engagement between the fine threads can also ensure that the current situation can be stably maintained and the change is not easily generated when the rotation is stopped, so as to ensure the stable offset angle of the load 5. The outer side wall of the transmission disc 3 can be symmetrically provided with a first vertical stripe 32 and a second vertical stripe 33, and one of the first vertical stripe and the second vertical stripe can be optionally engaged with the inclined stripes of the screw rod 8.

It can be understood that, in order to reinforce the engagement stability of the diagonal line of the screw rod 8 and the vertical line of the transmission disc 3, corresponding reinforcing structures can be made on the positioning piece 7 and the adjusting sleeve 9. The fixed connection area of the positioning piece 7 and the bottom plate 62 can be enlarged to stabilize the vertical structure of the guide rod 71 and the bottom plate 62, and further the engagement stability of the diagonal grains and the vertical grains of the screw rod 8 can be stabilized. Can set up spacing ring 91 at the tip of adjusting sleeve 9, spacing ring 91 only can move on the smooth part 82 of lead screw 8, and spacing ring 91 has certain width can stabilize the unstable phenomenon of lead screw 8 when fine thread rotates to the terminal point position for remain parallel throughout between lead screw 8 and the adjusting sleeve 9. The area of the positioning member 7 inside the adjusting sleeve 9 can be enlarged, so as to further ensure the position relationship and the rotation effect of the adjusting sleeve 9 and the axis of the positioning member 7.

It can be understood that, can also set up the transmission twill (not shown in the drawing) on the lateral wall of transmission dish 3, the inclination of transmission twill is unanimous with the inclination of the twill of twill portion 81 for the transmission twill can with the twill meshing of twill portion 81, when lead screw 8 reciprocated, thereby can promote the transmission twill and rotate transmission dish 3, its principle is the same with the perpendicular vertical line that sets up, does not detailed again here.

Based on the above-mentioned apparatus, please refer to fig. 2 and fig. 3, when the fine adjustment apparatus for an optical parametric oscillator of the present invention is installed, it is necessary to determine the installation position on the substrate 6, the installation ring 61 is only used for installing the positioning apparatus 4, and cannot be used as a reference of the whole optical path, a positioning ring 10 may be disposed on the substrate 6, and the center of the positioning ring 10 is located on the passing route of the optical path. The position of the positioning ring 10 may also serve as a mounting reference point for the load 5.

The position of the positioning piece 7 on the bottom plate 62 can be arranged corresponding to the mounting ring 61, and the position of the positioning piece 7 is arranged according to the diameter of the transmission disc 3; the base plate 6 is provided with a through hole, so that the screw rod 8 is not abutted to the base plate 6, and the screw rod 8 is ensured not to be stopped when moving upwards, and the adjustment is smoothly completed.

The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the specific embodiments of the invention be limited to these descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. The precision adjusting device suitable for the optical parametric oscillator is characterized by comprising a transmission rod (1), a transmission disc (3), a fixing piece (7), a screw rod (8) and an adjusting sleeve (9), wherein the adjusting sleeve (9) is in threaded connection with the bottom of the screw rod (8) provided with a threaded part (83), the bottom of the adjusting sleeve (9) is rotatably connected with the fixing piece (7), one end of the fixing piece (7) positioned in the adjusting sleeve (9) is provided with a guide rod (71), the guide rod (71) is inserted into the screw rod (8) in a plugging manner, so that the screw rod (8) can only move along the axial lead direction of the guide rod (71), a twill on the upper part of a twill part (81) of the screw rod (8) is meshed with a short-section vertical grain of the transmission disc (3), and the screw rod (8) is perpendicular to the transmission disc (3), the utility model discloses a bearing device, including the drive disc (3), the upper end rigid coupling of transfer line (1) has anchor clamps (2) that are used for installing load thing (5), rotates adjusting sleeve (9), lead screw (8) are followed the axial lead direction of guide bar (71) removes, makes the twill on lead screw (8) upper portion can promote twill portion (81) with thereby the short segment erects the line of drive disc (3) interlock department rotates drive disc (3), drive disc (3) linkage drive line (1) synchronous rotation, thereby adjust the skew angle of load thing (5).

2. The fine adjustment device for the optical parametric oscillator according to claim 1, further comprising a positioning device (4) and a base plate (6), wherein the base plate (6) is provided with a mounting ring (61), a fixing portion of the positioning device (4) is installed in the mounting ring (61), the transmission rod (1) is inserted into the positioning device (4), a lower end of the transmission rod (1) extends out of the fixing portion, and an upper end of the transmission rod (1) extends out of a dial portion of the positioning device (4).

3. The precise adjustment device for the optical parametric oscillator according to claim 2, wherein a bottom plate (62) is further disposed below the substrate (6), the bottom of the fixing member (7) is fixedly connected to the bottom plate (62), a through hole is formed in the substrate (6) at a position corresponding to the lead screw (8), and the aperture of the through hole is larger than the diameter of the inclined thread portion (81) so as to prevent the lead screw (8) from abutting against the substrate (6) when moving upward.

4. The precise adjusting device suitable for the optical parametric oscillator according to claim 2, wherein the transmission rod (1) comprises an insertion part (11), a rotating part (12) and a limiting part (13), the insertion part (11) extends out of the fixing part to be inserted into an insertion hole (31) of the transmission disc (3), so that the transmission disc (3) and the transmission rod (1) can rotate synchronously; the rotating part (12) is positioned in a rotating cavity (42) in the fixed part and can rotate freely; the limiting part (13) is embedded in a limiting cavity (43) of the dial part, so that the dial part and the transmission rod (1) can synchronously rotate.

5. The precise adjustment device suitable for the optical parametric oscillator according to claim 4, wherein the center of the transmission disc (3) is provided with an insertion hole (31) for connecting the transmission rod (1), the outer side wall of the transmission disc (3) is provided with short-section vertical lines, the vertical lines can be engaged with the inclined lines on the screw rod (8), and the vertical lines comprise first vertical lines (32) and second vertical lines (33).

6. A fine adjustment device suitable for an optical parametric oscillator according to claim 3, wherein the fixing member (7) is rotatably connected to the bottom of the adjustment sleeve (9), the adjustment sleeve (9) is capable of rotating around the axis of the fixing member (7), and the guide rod (71) is coaxially disposed with the axis of the fixing member (7).

7. A fine adjustment device suitable for an optical parametric oscillator according to claim 1, wherein the guide rod (71) is a polygonal prism, and a guide hole of the lead screw (8) for accommodating the guide rod (71) is disposed to match the guide rod (71) such that the guide rod (71) and the lead screw (8) do not rotate relatively.

8. A fine tuning arrangement suitable for an optical parametric oscillator according to claim 3, wherein a connection support structure is provided between the substrate (6) and the base plate (62) to stabilize the horizontal structure of the substrate and the base plate (62).

9. The fine adjustment device suitable for the optical parametric oscillator according to claim 8, wherein a portion of the carrying structure occupied by the positioning device (4) and the fixing member (7) on the substrate (6) and the bottom plate (62) is independently set as an integral structure after being intercepted from the substrate (6) and the bottom plate (62), and when the integral structure is rotated, the offset angle of the load (5) can be adjusted greatly.

10. The fine adjustment device for the optical parametric oscillator according to claim 1, wherein a transmission twill is disposed on an outer sidewall of the transmission disc (3), and an inclination angle of the transmission twill is consistent with an inclination angle of a twill of the twill portion (81), so that the transmission disc (3) can be engaged with the twill portion (81).