Laser frequency doubling crystal point changing device and control method

Abstract

The invention belongs to the technical field of lasers, and discloses a laser frequency doubling crystal point changing device and a control method. The laser frequency doubling crystal point changing device comprises a mounting seat, a crystal assembly, a first guiding mechanism, a second guiding mechanism and a detection mechanism. The crystal assembly comprises a frequency doubling crystal and a sliding seat. The sliding seat is slidably arranged on the mounting seat, and the frequency doubling crystal is arranged on the sliding seat. The first guiding mechanism is installed on the mounting seat, the first guiding mechanism is connected to the sliding seat and is used to drive the sliding seat to move along a first direction, the second guiding mechanism is installed on the mounting seat, the second guiding mechanism is connected to the sliding seat and is used to drive the sliding seat to move along a second direction, and the detection mechanism comprises a first detection component and a second detection component. The first detection component and the second detection component are used to detect the point changing position of the frequency doubling crystal. The frequency doubling crystal automatically changes points from an origin point to a last point position, thereby realizing precise movement and automatic point changing of the frequency doubling crystal, and ensuring that the frequency doubling crystal can emit light normally.

Description

Technical Field

[0001] The invention relates to the technical field of lasers, and in particular to a laser frequency doubling crystal point changing device and a control method. Background Art

[0002] The frequency doubling crystal is the core optical device inside the laser. The laser spot has high energy and the energy is focused to one point. It is used to up-convert the light beam on the incident surface of the crystal, thereby reducing the wavelength of the light beam. It is usually used to generate ultraviolet light. The incident surface of the frequency doubling crystal is a plane, which is usually rectangular. The spot of the incident light beam is usually incident vertically onto the incident surface of the frequency doubling crystal, and the position of the incident spot is fixed.

[0003] When the incident light beam passes through the frequency doubling crystal, it will cause heat concentration at the local point on the crystal that contacts the light beam. After the use time exceeds the design life of the single point of the frequency doubling crystal, this point will be damaged, forming a "bad point", resulting in failure to emit light normally. The crystal needs to be replaced to solve this problem. In the prior art, a manual pull rod type crystal point change is usually adopted. When the laser has been working for a certain period of time, the position of the crystal is manually adjusted by pushing the railing so that the light spot can irradiate different parts of the crystal. However, this method of manual adjustment is not precise and has large deviations. After the point change, the relative position of the crystal and the incident light spot changes, affecting the normal light beam. In addition, the point change cannot be performed automatically, and the frequency doubling crystal cannot emit light normally.

[0004] Therefore, there is an urgent need for a laser frequency doubling crystal point changing device and a control method to solve the above problems. Summary of the invention

[0005] According to one aspect of the present invention, the present invention provides a laser frequency doubling crystal point changing device, which realizes the point changing of the frequency doubling crystal in the first direction and the second direction, increases the number of point changes, and improves the service life of the frequency doubling crystal. At the same time, the frequency doubling crystal automatically changes from the original point to the last point, realizing the precise movement and automatic point changing of the frequency doubling crystal.

[0006] In order to solve the above problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] Laser frequency doubling crystal point changing device, comprising:

[0008] Mounting seat;

[0009] A crystal assembly, the crystal assembly comprising a frequency doubling crystal and a sliding seat, the sliding seat being slidably disposed on the mounting seat, and the frequency doubling crystal being disposed on the sliding seat;

[0010] A first guide mechanism, the first guide mechanism is installed on the mounting seat, the first guide mechanism is connected to the sliding seat and is used to drive the sliding seat to move along a first direction;

[0011] a second guide mechanism, the second guide mechanism being mounted on the mounting seat, the second guide mechanism being connected to the sliding seat and being used to drive the sliding seat to move along a second direction, the second direction being arranged perpendicular to the first direction;

[0012] The detection mechanism comprises a first detection component and a second detection component, wherein the first detection component and the second detection component are respectively installed on the first guide mechanism and the second guide mechanism and are used to detect the switching point position of the frequency doubling crystal.

[0013] Preferably, the first guiding mechanism includes a first motor, a first connecting member and a first fixing member, the first motor is installed on the mounting seat, and the output end of the first motor is connected to one end of the first connecting member and is used to drive the first connecting member to move along the first direction, the other end of the first connecting member is arranged on the first fixing member, and the first fixing member is fixedly connected to the sliding seat, and the sliding seat can drive the frequency doubling crystal to move along the first direction under the action of the first connecting member.

[0014] Preferably, the first guiding mechanism further includes a magnetic member, and the magnetic member is disposed between the first connecting member and the first fixing member, and the first connecting member and the first fixing member can slide relatively along the second direction under the action of the magnetic member.

[0015] Preferably, the first detection component includes a first positioning member and a first control circuit board electrically connected to the first positioning member, the first positioning member is slidably disposed on the housing of the first motor, the first positioning member is used to detect the switching position of the sliding seat along the first direction, and the first control circuit board is used to control the first motor to be turned on or off.

[0016] Preferably, the second guiding mechanism includes a second motor, a second connecting member, a second fixing member and a sliding guide rail, the second motor is mounted on the mounting seat, and the output end of the second motor is connected to the second connecting member and is used to drive the second connecting member to move along the second direction, the second connecting member is fixedly connected to one end of the second fixing member, the middle end of the second fixing member is fixedly connected to the sliding guide rail, and the other end of the second fixing member is fixedly connected to the sliding seat, and the sliding seat can drive the frequency doubling crystal to move along the second direction under the guidance of the sliding guide rail under the action of the second connecting member.

[0017] Preferably, the second detection component includes a second positioning member and a second control circuit board electrically connected to the second positioning member, the second positioning member is slidably arranged on the housing of the second motor, the second positioning member is used to detect the switching position of the sliding seat along the second direction, and the second control circuit board is used to control the second motor to be turned on or off.

[0018] Preferably, the detection mechanism also includes an alarm, which is electrically connected to the first detection component and the second detection component. When the first detection component and the second detection component respectively detect that the sliding seat is at the end position along the first direction and the second direction, the alarm sounds an alarm.

[0019] Preferably, the frequency doubling crystal comprises a crystal body, an upper cover and a base, the base is mounted on the sliding seat, the crystal body is located between the upper cover and the base, and the upper cover is disposed on the crystal body.

[0020] According to another aspect of the present invention, a laser frequency doubling crystal point changing control method is provided. By implementing the above-mentioned laser frequency doubling crystal point changing device, the laser frequency doubling crystal point changing control method comprises:

[0021] S100: The first detection component and the second detection component respectively detect the positions of the driving source of the first guide mechanism and the driving source of the second guide mechanism and restore them to the origin, so that the frequency doubling crystal can be at the origin position;

[0022] S200: Under the action of the first guiding mechanism and the second guiding mechanism, the frequency doubling crystal can move along the first direction and the second direction according to a preset trajectory;

[0023] S300: Under the action of the detection mechanism, the frequency doubling crystal automatically changes from the original point to the last point, and the frequency doubling crystal emits light normally.

[0024] Preferably, the first guiding mechanism comprises a first motor, a first connecting member and a first fixing member, the first motor is mounted on the mounting seat, and the output end of the first motor is connected to one end of the first connecting member and is used to drive the first connecting member to move along the first direction, the other end of the first connecting member is arranged on the first fixing member, the first fixing member is fixedly connected to the sliding seat, and the sliding seat can drive the frequency doubling crystal to move along the first direction under the action of the first connecting member, and the second guiding mechanism comprises a second motor, a second connecting member, a second fixing member and a sliding guide rail, the second motor is mounted on the mounting seat, and the output end of the second motor is connected to the second connecting member and is used to drive the second connecting member to move along the second direction, the second connecting member is fixedly connected to one end of the second fixing member, the middle end of the second fixing member is fixedly connected to the sliding guide rail, and the other end of the second fixing member is fixedly connected to the sliding seat, and the sliding seat can drive the frequency doubling crystal to move along the second direction under the guidance of the sliding guide rail under the action of the second connecting member;

[0025] The laser frequency doubling crystal point change control method S200 specifically includes:

[0026] S201: Turn on the first motor, and the output shaft of the first motor and the first connecting member move synchronously along the first direction, thereby driving the first fixing member to move synchronously along the first direction;

[0027] S202: The sliding seat can drive the frequency doubling crystal to move along the first direction under the action of the first connecting member, so as to achieve a point change of the frequency doubling crystal in the first direction;

[0028] S203: Turn on the second motor, so that the output shaft of the second motor and the second connecting member move synchronously along the second direction, thereby driving the second fixing member to move synchronously along the second direction;

[0029] S204: The sliding seat can drive the frequency doubling crystal to move along the second direction under the action of the second connecting member, so as to achieve a point change of the frequency doubling crystal in the second direction.

[0030] The beneficial effects of the present invention are:

[0031] The laser frequency doubling crystal point changing device provided by the present invention comprises a sliding seat slidably arranged on a mounting seat, and a frequency doubling crystal is arranged on the sliding seat. A first guide mechanism is installed on the mounting seat, the first guide mechanism is connected to the sliding seat and is used to drive the sliding seat to move along a first direction, and a second guide mechanism is installed on the mounting seat, the second guide mechanism is connected to the sliding seat and is used to drive the sliding seat to move along a second direction. When the first guide mechanism is started, the sliding seat drives the frequency doubling crystal to move along the first direction under the driving action of the first guide mechanism, and when the second guide mechanism is started, the sliding seat drives the frequency doubling crystal to move along the second direction under the driving action of the second guide mechanism, so as to realize the point changing of the frequency doubling crystal in the first direction and the second direction, increase the number of point changing, and improve the service life of the frequency doubling crystal. A first detection component and a second detection component are respectively installed on the first guide mechanism and the second guide mechanism and are used to detect the point changing position of the frequency doubling crystal in the first direction and the second direction, and the frequency doubling crystal automatically changes from the original point position to the last point position, so as to realize the precise movement and automatic point changing of the frequency doubling crystal, ensure that the frequency doubling crystal can emit light normally, and ensure the stable and effective operation of the laser.

[0032] The laser frequency doubling crystal point changing control method provided by the present invention, through the implementation of the above-mentioned laser frequency doubling crystal point changing device, the first detection component and the second detection component respectively detect the positions of the driving source of the first guide mechanism and the driving source of the second guide mechanism and restore them to the origin, so that the frequency doubling crystal can be at the origin point; under the action of the first guide mechanism and the second guide mechanism, the frequency doubling crystal can move along the first direction and the second direction according to the preset trajectory; under the action of the detection mechanism, the frequency doubling crystal automatically changes from the origin point to the last point, and the frequency doubling crystal emits light normally. The point changing of the frequency doubling crystal in the first direction and the second direction is realized, the number of point changes is increased, and the service life of the crystal is improved. The frequency doubling crystal automatically changes from the origin point to the last point, realizing the precise movement and automatic point changing of the frequency doubling crystal, and ensuring that the frequency doubling crystal can emit light normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a laser frequency doubling crystal point changing device in an embodiment of the present invention;

[0034] Figure 2 It is a cross-sectional view of a laser frequency doubling crystal point changing device in an embodiment of the present invention;

[0035] Figure 3 is a schematic structural diagram of a second guide mechanism in an embodiment of the present invention;

[0036] Figure 4 It is a side view of the laser frequency doubling crystal point changing device in the embodiment of the present invention;

[0037] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0038] Figure 6 Schematic diagram of the movement path of the incident laser spot relative to the frequency doubling crystal in an embodiment of the present invention;

[0039] Figure 7 The process of the laser frequency doubling crystal point changing control method in the embodiment of the present invention is as follows Figure 1 ;

[0040] Figure 8 The process of the laser frequency doubling crystal point changing control method in the embodiment of the present invention is as follows Figure 2 .

[0041] Reference numerals:

[0042] 1. Mounting seat;

[0043] 2. Frequency doubling crystal; 21. Crystal body; 22. Upper cover; 23. Base;

[0044] 3. Sliding seat;

[0045] 4. First guide mechanism; 41. First motor; 42. First connecting member; 43. First fixing member; 44. Magnetic member; 45. Fixing seat;

[0046] 5. Second guide mechanism; 51. Second motor; 52. Second connecting member; 53. Second fixing member; 54. Sliding guide rail;

[0047] 6. First detection component; 61. First positioning member;

[0048] 7. Second detection component; 71. Second positioning member. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0050] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0053] like Figure 1-Figure 6As shown, in this embodiment, the laser frequency doubling crystal point changing device includes a mounting seat 1, a crystal assembly, a first guide mechanism 4, a second guide mechanism 5 and a detection mechanism. Among them, the crystal assembly includes a frequency doubling crystal 2 and a sliding seat 3, the sliding seat 3 is slidably arranged on the mounting seat 1, and the frequency doubling crystal 2 is arranged on the sliding seat 3. The first guide mechanism 4 is installed on the mounting seat 1, the first guide mechanism 4 is connected to the sliding seat 3 and is used to drive the sliding seat 3 to move along the first direction, the second guide mechanism 5 is installed on the mounting seat 1, the second guide mechanism 5 is connected to the sliding seat 3 and is used to drive the sliding seat 3 to move along the second direction, and the second direction is arranged perpendicular to the first direction. The detection mechanism includes a first detection component 6 and a second detection component 7, the first detection component 6 and the second detection component 7 are respectively installed on the first guide mechanism 4 and the second guide mechanism 5 and are used to detect the point changing position of the frequency doubling crystal 2. Specifically, the first direction is the AB direction, that is, the X-axis direction, and the second direction is the CD direction, that is, the Y-axis direction. The first guide mechanism 4 and the second guide mechanism 5 are respectively mounted on the mounting seat 1 of the laser in the first direction and the second direction, and the frequency doubling crystal 2 is mounted on the sliding seat 3, and the sliding seat 3 is located on the mounting seat 1 and slides with the mounting seat 1. The first guide mechanism 4 and the second guide mechanism 5 respectively control the sliding seat 3 and the frequency doubling crystal 2 on the sliding seat 3 to move linearly in the first direction and the second direction to achieve automatic point change. The first detection component 6 and the second detection component 7 respectively detect the positions of the driving source of the first guide mechanism 4 and the driving source of the second guide mechanism 5 and restore them to the origin so that the frequency doubling crystal 2 can be at the origin point. The first guide mechanism 4 is started, and the sliding seat 3 drives the frequency doubling crystal 2 to move in the first direction under the driving action of the first guide mechanism 4. The second guide mechanism 5 is started, and the sliding seat 3 drives the frequency doubling crystal 2 to move in the second direction under the driving action of the second guide mechanism 5, so as to achieve point change of the frequency doubling crystal 2 in the first direction and the second direction, increase the number of point changes, and improve the service life of the crystal. At the same time, the first detection component 6 is used to detect the changing point position of the frequency doubling crystal 2 along the first direction, and the second detection component 7 is used to detect the changing point position of the frequency doubling crystal 2 along the second direction. The frequency doubling crystal 2 automatically changes from the original point to the last point, thereby realizing the precise movement and automatic changing of the frequency doubling crystal 2, ensuring that the frequency doubling crystal 2 can emit light normally, and ensuring the stable and effective operation of the laser.

[0054] Further, continue to refer to Figure 1-Figure 6The first guide mechanism 4 includes a first motor 41, a first connecting member 42, a first fixing member 43 and a magnetic member 44. The first motor 41 is mounted on the mounting base 1 through a fixing base 45, and the output end of the first motor 41 is connected to one end of the first connecting member 42 and is used to drive the first connecting member 42 to move along the first direction. The other end of the first connecting member 42 is arranged on the first fixing member 43, and the first fixing member 43 is fixedly connected to the sliding base 3. The sliding base 3 can drive the frequency doubling crystal 2 to move along the first direction under the action of the first connecting member 42. The magnetic member 44 is arranged between the first connecting member 42 and the first fixing member 43. The first connecting member 42 and the first fixing member 43 can slide relative to each other along the second direction under the action of the magnetic member 44. Specifically, the magnetic member 44 is a magnet, and the first motor 41 is a linear stepping motor, and its output shaft can move linearly along the first direction. The output shaft of the first motor 41 is fixedly connected to the left end of the first connecting member 42, the bottom of the first fixing member 43 is installed on the sliding seat 3, and the upper end of the first fixing member 43 is connected to the right end of the first connecting member 42 through the magnetic member 44, wherein the first connecting member 42 is provided with a first card slot, and the first fixing member 43 is provided with a second card slot, the second card slot is a U-shaped guide slot, and the guide direction is the second direction, and the magnetic member 44 is adsorbed in the first card slot and the second card slot. Since the magnetic member 44 has a magnetic attraction along the first direction and no magnetic attraction along the second direction, the first connecting member 42 and the first fixing member 43 can be adsorbed and fixed along the first direction, and relative sliding occurs along the second direction. When the second guide mechanism 5 drives the sliding seat 3 to move along the second direction, the first fixing member 43 connected to the sliding seat 3 can slide relatively along the first connecting member 42, thereby ensuring that the first guide assembly and the second guide assembly move independently along the first direction and the second direction respectively. The first motor 41 is started, and the output shaft of the first motor 41 moves △X along the first direction, △X being the distance between adjacent light spot positions in the first direction when changing points. The power transmission through the first connecting member 42 and the first fixing member 43 drives the frequency doubling crystal 2 to move linearly △X along the first direction under the guidance of the sliding seat 3, thereby realizing the point change of the frequency doubling crystal 2 in the first direction.

[0055] Further, continue to refer to Figure 1-Figure 6The second guide mechanism 5 includes a second motor 51, a second connecting member 52, a second fixing member 53, and a sliding guide rail 54. The second motor 51 is mounted on the mounting base 1 through the fixing base 45, and the output end of the second motor 51 is connected to the second connecting member 52 and is used to drive the second connecting member 52 to move along the second direction. The second connecting member 52 is fixedly connected to one end of the second fixing member 53, the middle end of the second fixing member is fixedly connected to the sliding guide rail 54, and the other end of the second fixing member 53 is fixedly connected to the sliding base 3. The sliding base 3 can drive the frequency doubling crystal 2 to move along the second direction under the guidance of the sliding guide rail 54 under the action of the second connecting member 52. Specifically, the second motor 51 is a linear stepping motor, and its output shaft can move linearly along the second direction. The output shaft of the second motor 51 is fixedly connected to the lower end of the second connecting member 52, and the second fixing member 53 is connected to the sliding base 3. The second motor 51 is started, and the output end of the second motor 51 moves △Y along the second direction, where △Y is the distance between adjacent light spots in the second direction when changing points. The frequency doubling crystal 2 is driven to move linearly △Y along the second direction under the guidance of the sliding seat 3, thereby changing the point position of the frequency doubling crystal 2 in the second direction.

[0056] Further, continue to refer to Figure 1-Figure 6The first detection component 6 includes a first positioning member 61 and a first control circuit board electrically connected to the first positioning member 61. The first positioning member 61 is slidably disposed on the housing of the first motor 41. The first positioning member 61 is used to detect the change point position of the sliding seat 3 along the first direction. The first control circuit board is used to control the first motor 41 to be turned on or off. The second detection component 7 includes a second positioning member 71 and a second control circuit board electrically connected to the second positioning member 71. The second positioning member 71 is slidably disposed on the housing of the second motor 51. The second positioning member 71 is used to detect the change point position of the sliding seat 3 along the second direction. The second control circuit board is used to control the second motor 51 to be turned on or off. Specifically, when the first motor 41 and the second motor 51 rotate a certain angle respectively, the frequency doubling crystal 2 can be driven to move arbitrarily within a certain range along the first direction and the second direction of the incident light spot with the minimum displacement of △X and △Y. Assuming that the frequency doubling crystal 2 is regarded as fixed, the crystal incident light spot can automatically change points along the preset change point path in the first direction of the X axis and the second direction of the Y axis in the crystal incident plane. Taking the S-shaped switching path as an example, when the frequency doubling crystal 2 is ready to switch points along the first direction, the first positioning member 61 detects the switching position of the sliding seat 3 along the first direction, and sends a high level to the first control circuit board, and the first control circuit board can control the first motor 41 to open, and the sliding seat 3 moves along the first direction, while the second positioning member 71 does not detect that the sliding seat 3 switches points along the second direction, and then sends a low level to the second control circuit board, and the second control circuit board can control the second motor 51 to turn off, and the sliding seat 3 does not move along the second direction. Similarly, when the frequency doubling crystal 2 is ready to switch points along the second direction, the first positioning member 61 does not detect the switching position of the sliding seat 3 along the first direction, and sends a low level to the first control circuit board, and the first control circuit board can control the first motor 41 to turn off, and the sliding seat 3 does not move along the first direction, while the second positioning member 71 detects that the sliding seat 3 switches points along the second direction, and then sends a high level to the second control circuit board, and the second control circuit board can control the second motor 51 to open, and the sliding seat 3 moves along the second direction. The frequency doubling crystal 2 automatically changes from the origin to the last point, achieving accurate movement and automatic point change of the frequency doubling crystal 2, ensuring that the frequency doubling crystal 2 can emit light normally. In addition, the first detection component 6 and the second detection component 7 can respectively detect the positions of the driving source of the first guide mechanism 4 and the driving source of the second guide mechanism 5 and restore them to the origin, so that the frequency doubling crystal 2 can be at the origin.

[0057] Further, continue to refer to Figure 1-Figure 6The detection mechanism also includes an alarm, which is electrically connected to the first detection component 6 and the second detection component 7. When the first detection component 6 and the second detection component 7 respectively detect that the sliding seat 3 is at the end position along the first direction and the second direction, the alarm sounds an alarm. Specifically, when the frequency doubling crystal 2 changes points to the last point in sequence, the first positioning member 61 does not detect the changing point position of the sliding seat 3 along the first direction, and sends a low level to the first control circuit board. The first control circuit board can control the first motor 41 to turn off, and the sliding seat 3 does not move along the first direction. The second positioning member 71 does not detect that the sliding seat 3 changes points along the second direction, and then sends a low level to the second control circuit board. The second control circuit board can control the second motor 51 to turn off, and the sliding seat 3 does not move along the second direction. At the same time, the first control circuit board and the second control circuit board control the alarm to sound an alarm, indicating that the frequency doubling crystal 2 needs to be replaced.

[0058] Further, continue to refer to Figure 1-Figure 6 The frequency doubling crystal 2 includes a crystal body 21, an upper cover 22 and a base 23. The base 23 is installed on the sliding seat 3. The crystal body 21 is located between the upper cover 22 and the base 23. The upper cover 22 is covered on the crystal body 21. The crystal body 21 is clamped by the upper cover 22 and the base 23 and fixed on the sliding seat 3.

[0059] This embodiment also provides a method for controlling the switching point of a laser frequency doubling crystal 2. Figure 7-Figure 8 As shown, through the implementation of the above laser frequency doubling crystal point changing device, the laser frequency doubling crystal 2 point changing control method includes:

[0060] S100: The first detection component 6 and the second detection component 7 respectively detect the positions of the driving source of the first guide mechanism 4 and the driving source of the second guide mechanism 5 and restore them to the origin, so that the frequency doubling crystal 2 can be at the origin.

[0061] S200: Under the action of the first guiding mechanism 4 and the second guiding mechanism 5, the frequency doubling crystal 2 can move along the first direction and the second direction according to a preset trajectory.

[0062] Among them, S200 specifically includes:

[0063] S201: Turn on the first motor 41, and the output shaft of the first motor 41 and the first connecting member 42 move synchronously along the first direction, driving the first fixing member 43 to move synchronously along the first direction.

[0064] S202: The sliding seat 3 can drive the frequency doubling crystal 2 to move along the first direction under the action of the first connecting member 42, so as to achieve a point change of the frequency doubling crystal 2 in the first direction.

[0065] The first motor 41 is a linear stepping motor, and its output shaft can move linearly along the first direction. The output shaft of the first motor 41 is fixedly connected to the left end of the first connecting member 42, the bottom of the first fixing member 43 is installed on the sliding seat 3, and the upper end of the first fixing member 43 is connected to the right end of the first connecting member 42 through the magnetic member 44, wherein the first connecting member 42 is provided with a first card slot, and the first fixing member 43 is provided with a second card slot, the second card slot is a U-shaped guide slot, and the guide direction is the second direction, and the magnetic member 44 is adsorbed in the first card slot and the second card slot. Since the magnetic member 44 has a magnetic attraction force along the first direction and no magnetic attraction force along the second direction, the first connecting member 42 and the first fixing member 43 can be adsorbed and fixed along the first direction, and relative slip occurs along the second direction. When the second guide mechanism 5 drives the sliding seat 3 to move along the second direction, the first fixing member 43 connected to the sliding seat 3 can slide relatively along the first connecting member 42, thereby ensuring that the first guide assembly and the second guide assembly move independently along the first direction and the second direction respectively. The first motor 41 is started, and the output shaft of the first motor 41 moves along the first direction. Through the power transmission of the first connecting member 42 and the first fixing member 43, the frequency doubling crystal 2 is driven to move linearly along the first direction under the guidance of the sliding seat 3, thereby realizing the point change of the frequency doubling crystal 2 in the first direction.

[0066] S203: Turn on the second motor 51, and the output shaft of the second motor 51 and the second connecting member 52 move synchronously along the second direction, driving the second fixing member 53 to move synchronously along the second direction.

[0067] S204: The sliding seat 3 can drive the frequency doubling crystal 2 to move along the second direction under the action of the second connecting member 52, so as to achieve a point change of the frequency doubling crystal 2 in the second direction.

[0068] The second motor 51 is installed on the mounting base 1, and the output end of the second motor 51 is connected to the second connecting member 52 and is used to drive the second connecting member 52 to move along the second direction. The second connecting member 52 is fixedly connected to one end of the second fixing member 53, the middle end of the second fixing member is fixedly connected to the sliding guide rail 54, and the other end of the second fixing member 53 is fixedly connected to the sliding seat 3. The sliding seat 3 can drive the frequency doubling crystal 2 to move along the second direction under the guidance of the sliding guide rail 54 under the action of the second connecting member 52. The output shaft of the second motor 51 can move linearly along the second direction. The output shaft of the second motor 51 is fixedly connected to the lower end of the second connecting member 52, and the second fixing member 53 is connected to the sliding seat 3. When the second motor 51 is started, the output end of the second motor 51 moves along the second direction, driving the frequency doubling crystal 2 to move linearly along the second direction under the guidance of the sliding seat 3, so as to achieve the point change of the frequency doubling crystal 2 in the second direction.

[0069] S300: Under the action of the detection mechanism, the frequency doubling crystal 2 automatically changes from the original point to the last point, and the frequency doubling crystal 2 emits light normally.

[0070] The first detection component 6 includes a first positioning member 61 and a first control circuit board electrically connected to the first positioning member 61. The first positioning member 61 is slidably disposed on the housing of the first motor 41. The first positioning member 61 is used to detect the change point position of the sliding seat 3 along the first direction. The first control circuit board is used to control the first motor 41 to open or close. The second detection component 7 includes a second positioning member 71 and a second control circuit board electrically connected to the second positioning member 71. The second positioning member 71 is slidably disposed on the housing of the second motor 51. The second positioning member 71 is used to detect the change point position of the sliding seat 3 along the second direction. The second control circuit board is used to control the second motor 51 to open or close. The frequency doubling crystal 2 automatically changes from the origin point to the last point, realizing the precise movement and automatic change of the frequency doubling crystal 2, and ensuring that the frequency doubling crystal 2 can emit light normally.

[0071] The laser frequency doubling crystal 2 point change control method provided in this embodiment, through the implementation of the above-mentioned laser frequency doubling crystal point change device, the first detection component 6 and the second detection component 7 respectively detect the position of the driving source of the first guide mechanism 4 and the driving source of the second guide mechanism 5 and restore to the origin, so that the frequency doubling crystal 2 can be at the origin point; under the action of the first guide mechanism 4 and the second guide mechanism 5, the frequency doubling crystal 2 can move along the first direction and the second direction according to the preset trajectory; under the action of the detection mechanism, the frequency doubling crystal 2 automatically changes from the origin point to the last point, and the frequency doubling crystal 2 emits light normally. The point change of the frequency doubling crystal 2 in the first direction and the second direction is realized, the number of point changes is increased, and the service life of the crystal is improved. The frequency doubling crystal 2 automatically changes from the origin point to the last point, and the frequency doubling crystal 2 is accurately moved and automatically changed, ensuring that the frequency doubling crystal 2 can emit light normally.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. Laser frequency doubling crystal point changing device, characterized in that: include: Mounting seat (1); A crystal assembly, the crystal assembly comprising a frequency doubling crystal (2) and a sliding seat (3), the sliding seat (3) being slidably arranged on the mounting seat (1), and the frequency doubling crystal (2) being arranged on the sliding seat (3); a first guiding mechanism (4), the first guiding mechanism (4) being mounted on the mounting seat (1), the first guiding mechanism (4) being connected to the sliding seat (3) and being used to drive the sliding seat (3) to move along a first direction; a second guiding mechanism (5), the second guiding mechanism (5) being mounted on the mounting seat (1), the second guiding mechanism (5) being connected to the sliding seat (3) and being used for driving the sliding seat (3) to move along a second direction, the second direction being arranged perpendicular to the first direction; A detection mechanism, the detection mechanism comprising a first detection component (6) and a second detection component (7), the first detection component (6) and the second detection component (7) being respectively mounted on the first guide mechanism (4) and the second guide mechanism (5) and used for detecting the switching point position of the frequency doubling crystal (2); The first guiding mechanism (4) comprises a first motor (41), a first connecting member (42) and a first fixing member (43); the first motor (41) is mounted on the mounting seat (1); an output end of the first motor (41) is connected to one end of the first connecting member (42) and is used to drive the first connecting member (42) to move along the first direction; the other end of the first connecting member (42) is arranged on the first fixing member (43); the first fixing member (43) is fixedly connected to the sliding seat (3); and the sliding seat (3) can drive the frequency doubling crystal (2) to move along the first direction under the action of the first connecting member (42); The first guiding mechanism (4) further comprises a magnetic attraction member (44), wherein the magnetic attraction member (44) is arranged between the first connecting member (42) and the first fixing member (43), and the first connecting member (42) and the first fixing member (43) are capable of sliding relative to each other along the second direction under the action of the magnetic attraction member (44); The second guiding mechanism (5) comprises a second motor (51), a second connecting member (52), a second fixing member (53) and a sliding guide rail (54); the second motor (51) is mounted on the mounting seat (1); an output end of the second motor (51) is connected to the second connecting member (52) and is used to drive the second connecting member (52) to move along the second direction; the second connecting member (52) is fixedly connected to one end of the second fixing member (53); a middle end of the second fixing member (53) is fixedly connected to the sliding guide rail (54); and the other end of the second fixing member (53) is fixedly connected to the sliding seat (3); and the sliding seat (3) can, under the action of the second connecting member (52), drive the frequency doubling crystal (2) to move along the second direction under the guidance of the sliding guide rail (54).

2. The laser frequency doubling crystal point changing device according to claim 1, characterized in that: The first detection component (6) comprises a first positioning member (61) and a first control circuit board electrically connected to the first positioning member (61); the first positioning member (61) is slidably disposed on a housing of the first motor (41); the first positioning member (61) is used to detect a switching point position of the sliding seat (3) along the first direction; and the first control circuit board is used to control the first motor (41) to be turned on or off.

3. The laser frequency doubling crystal point changing device according to claim 2, characterized in that: The second detection assembly (7) comprises a second positioning member (71) and a second control circuit board electrically connected to the second positioning member (71); the second positioning member (71) is slidably disposed on a housing of the second motor (51); the second positioning member (71) is used to detect a switching point position of the sliding seat (3) along the second direction; and the second control circuit board is used to control the second motor (51) to be turned on or off.

4. The laser frequency doubling crystal point changing device according to claim 1, characterized in that: The detection mechanism further comprises an alarm, which is electrically connected to the first detection component (6) and the second detection component (7), and when the first detection component (6) and the second detection component (7) respectively detect that the sliding seat (3) is located at an end position along the first direction and the second direction, the alarm sounds an alarm.

5. The laser frequency doubling crystal point changing device according to claim 1, characterized in that: The frequency doubling crystal (2) comprises a crystal body (21), an upper cover (22) and a base (23); the base (23) is mounted on the sliding seat (3); the crystal body (21) is located between the upper cover (22) and the base (23); and the upper cover (22) is covered on the crystal body (21).

6. A method for controlling the switching point of a laser frequency doubling crystal (2), characterized in that: By implementing the laser frequency doubling crystal point changing device as claimed in any one of claims 1 to 5, the laser frequency doubling crystal (2) point changing control method comprises: S100: the first detection component (6) and the second detection component (7) respectively detect the positions of the driving source of the first guide mechanism (4) and the driving source of the second guide mechanism (5) and restore them to the origin, so that the frequency doubling crystal (2) can be at the origin; S200: Under the action of the first guiding mechanism (4) and the second guiding mechanism (5), the frequency doubling crystal (2) can move along the first direction and the second direction according to a preset trajectory; S300: Under the action of the detection mechanism, the frequency doubling crystal (2) automatically changes from the origin to the last point, and the frequency doubling crystal (2) emits light normally.

7. The laser frequency doubling crystal (2) switching point control method according to claim 6, characterized in that: The first guide mechanism (4) comprises a first motor (41), a first connecting member (42) and a first fixing member (43); the first motor (41) is mounted on the mounting seat (1); an output end of the first motor (41) is connected to one end of the first connecting member (42) and is used to drive the first connecting member (42) to move along the first direction; the other end of the first connecting member (42) is arranged on the first fixing member (43); the first fixing member (43) is fixedly connected to the sliding seat (3); the sliding seat (3) can drive the frequency doubling crystal (2) to move along the first direction under the action of the first connecting member (42); the second guide mechanism (5) comprises a second motor (51), a second connecting member ( 52), a second fixing member (53) and a sliding guide rail (54), the second motor (51) being mounted on the mounting seat (1), and the output end of the second motor (51) being connected to the second connecting member (52) and being used for driving the second connecting member (52) to move along the second direction, the second connecting member (52) being fixedly connected to one end of the second fixing member (53), the middle end of the second fixing member (53) being fixedly connected to the sliding guide rail (54), and the other end of the second fixing member (53) being fixedly connected to the sliding seat (3), the sliding seat (3) being able to drive the frequency doubling crystal (2) to move along the second direction under the guidance of the sliding guide rail (54) under the action of the second connecting member (52); The laser frequency doubling crystal (2) switching point control method S200 specifically includes: S201: turning on the first motor (41), causing the output shaft of the first motor (41) and the first connecting member (42) to move synchronously along the first direction, thereby driving the first fixing member (43) to move synchronously along the first direction; S202: the sliding seat (3) is able to drive the frequency doubling crystal (2) to move along the first direction under the action of the first connecting member (42), so as to achieve a point change of the frequency doubling crystal (2) in the first direction; S203: turning on the second motor (51), causing the output shaft of the second motor (51) and the second connecting member (52) to move synchronously along the second direction, thereby driving the second fixing member (53) to move synchronously along the second direction; S204: The sliding seat (3) can drive the frequency doubling crystal (2) to move along the second direction under the action of the second connecting member (52), thereby achieving a point change of the frequency doubling crystal (2) in the second direction.

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