CN118017346A - Semiconductor laser collimation device - Google Patents
Semiconductor laser collimation device Download PDFInfo
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- CN118017346A CN118017346A CN202410423955.1A CN202410423955A CN118017346A CN 118017346 A CN118017346 A CN 118017346A CN 202410423955 A CN202410423955 A CN 202410423955A CN 118017346 A CN118017346 A CN 118017346A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000009966 trimming Methods 0.000 claims description 34
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- 238000000034 method Methods 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 10
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- 229910001220 stainless steel Inorganic materials 0.000 description 4
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Abstract
The invention relates to a collimation device of a semiconductor laser, which belongs to the field of focal length adjustment of light source lenses and comprises a main frame, a lens component and a lens fine-tuning component, wherein one end of the lens component is matched with the main frame in a sliding way along a Y axis and is detachably connected with the main frame, the lens fine-tuning component is fixedly connected with the top of the main frame and is in transmission connection with the other end of the lens component, and the aim of improving the collimation precision of the semiconductor laser and the beam quality and the irradiation effect of the laser is achieved.
Description
Technical Field
The invention relates to the technical field of focal length adjustment of light source lenses, in particular to a collimation device of a semiconductor laser.
Background
Existing semiconductor laser collimation is typically tuned using either the sleeve method or the direct method. The sleeve method is to put a cylinder (also called a collimator) behind the laser to limit the divergence range of the laser. The laser beam direction can be enabled to be perpendicular to the optical axis by fine adjustment of the position of the collimating barrel, so that the collimation degree is improved. Direct methods use standard collimated light or parallel line interferometers to reflect or transmit a beam through a mirror for precise adjustment. This method requires specialized personnel to use and the equipment is relatively expensive. The method belongs to line contact after fastening. After the fastening, the relative position of the lens X, Y shaft changes, the center line of the light source is not collinear with the center line of the lens, the collimation degree changes, and the data after debugging changes. And the distance from the lens to the laser directly influences the collimation degree, so that the collimation is difficult to accurately adjust by the existing jackscrew adjustment, and the locking and the adjustability of the lens component cannot be realized.
A semiconductor laser collimation device is therefore provided to solve the problems set forth in the background art above.
Disclosure of Invention
The invention provides a semiconductor laser collimation device for solving the technical problem, and aims to increase the collimation precision of a semiconductor laser and improve the beam quality and the irradiation effect of the laser.
The technical scheme for solving the technical problems is as follows: the utility model provides a semiconductor laser collimation device, includes body frame, lens subassembly and lens trimming subassembly, the one end of lens subassembly with the body frame is along Y axle sliding fit and with the body frame can dismantle the connection, the lens trimming subassembly with the top of body frame can be dismantled the connection, and with the other end transmission of lens subassembly is connected.
The beneficial effects of the invention are as follows: the lens assembly is mounted in the main frame so as to limit the movement of the lens assembly in the X-axis and Z-axis directions. The lens fine adjustment component can accurately adjust the lens component to move in the main frame along the Y-axis direction, so that the collimation precision is increased, and the stability of the device is improved.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the lens assembly includes a lens holder having one end slidably engaged with the main frame along the Y axis and detachably connected with the main frame, and a lens having a through hole provided along the Y axis, one end of the through hole being mounted with the lens.
The beneficial effects of adopting the further scheme are as follows: the main frame can limit the displacement of the lens holder and the lens along the X-axis and the Z-axis, fasten the lens holder and the lens along the X-axis and the Z-axis, ensure that the relative positions of the lens in the X-axis and the Z-axis are not changed, the collimation degree is not changed, and the debugged data are not changed. And ensures that the lens holder can be displaced in the main frame in the Y-axis direction.
Further, the outer wall of the lens assembly is provided with a protruding block, the main frame is provided with two locking walls which are oppositely arranged at intervals, a groove matched with the protruding block in shape is formed between the two locking walls, and the two locking walls are detachably connected with the protruding block.
The beneficial effects of adopting the further scheme are as follows: the convex blocks are matched with the two locking walls to increase the tightness of the lens component and the main frame.
Further, the outer wall of the lug is provided with a first positioning surface, a second positioning surface and a fastening surface which are sequentially connected, an included angle between the first positioning surface and the second positioning surface is an acute angle, and an included angle between the second positioning surface and the fastening surface is an acute angle.
The beneficial effects of adopting the further scheme are as follows: the projection has a first positioning surface, a second positioning surface and a fastening surface to restrict five degrees of freedom of the lens assembly other than the movement in the Y-axis direction when mounted with the main frame.
Further, the lens fine tuning assembly comprises a fine tuning frame, a first fine tuning assembly and a second fine tuning assembly, the fine tuning frame is detachably connected with the main frame, the first fine tuning assembly and the second fine tuning assembly are connected with the fine tuning frame, the first fine tuning assembly is located above the second fine tuning assembly, and the first fine tuning assembly and the second fine tuning assembly are in transmission connection with the other end of the lens assembly.
The beneficial effects of adopting the further scheme are as follows: the first fine tuning assembly and the second fine tuning assembly can drive the lens assembly to move along the Y-axis direction on the fine tuning frame, so that focal length fine tuning is realized, collimation precision is improved, and then beam quality and irradiation effect of the laser are improved.
Further, the first fine adjustment component comprises a first cam, a second cam, a first cam connecting rod, a second cam connecting rod, two first connecting rods, two second connecting rods, a first spring, a first sliding block, a first sliding rail and a first differential head, wherein the first cam, the first cam connecting rod and one of the first connecting rods are arranged in a one-to-one correspondence manner, the second cam connecting rod and the other first connecting rod are arranged in a one-to-one correspondence manner, the first cam connecting rod and the second cam connecting rod are rotatably arranged at one end of the fine adjustment frame, the first cam and the second cam are respectively positioned at one side of the other end of the main frame, far away from the lens component, and are respectively positioned at two ends of the lens component in the X direction, one end of the first cam is fixedly connected with one end of the first cam connecting rod, the other end of the first cam is hinged with one end of the first connecting rod, the other end of the first cam connecting rod is fixedly connected with one end of the second sliding rail, the other end of the other first cam connecting rod is fixedly connected with one end of the other first sliding rail, the other end of the other first sliding rod is fixedly connected with one end of the other sliding rod, the other sliding rod is fixedly connected with the other sliding rod, the other sliding rod is hinged with the other end of the other sliding rod is fixedly connected with one end of the other sliding rod, one ends of the two second connecting rods, which are far away from the first sliding block, are respectively connected with two ends of the first spring.
The beneficial effects of adopting the further scheme are as follows: the first differential head is screwed anticlockwise, and the screw rod of the first differential head pushes the first sliding block to move backwards along the Y-axis direction. The movement of the first sliding block drives the two second connecting rods to move backwards along the Y-axis direction (namely move along the negative Y-axis direction), and the two second connecting rods apply acting force to the first springs at the same time, so that the first springs are in a compressed state. The two second connecting rods are respectively driven to move backwards along the Y-axis direction in a one-to-one correspondence manner. The movement of the two first connecting rods correspondingly drives the first cam connecting rods and the second cam connecting rods to rotate in opposite directions, and then drives the first cams and the second cams to rotate in opposite directions.
The first differential head is screwed clockwise, and the screw rod of the first differential head pushes the first sliding block to move forwards along the Y-axis direction. The movement of the first sliding block drives the two second connecting rods to move forwards along the Y-axis direction (namely, move along the Y-axis positive direction), and the two second connecting rods apply acting force to the first springs at the same time, so that the first springs are in a stretching state. The two second connecting rods are respectively driven to move forward along the Y-axis direction in a one-to-one correspondence manner. The movement of the two first connecting rods correspondingly drives the first cam connecting rods and the second cam connecting rods to rotate in opposite directions, and then drives the first cams and the second cams to rotate in opposite directions.
Further, the second fine adjustment assembly comprises a third cam, a fourth cam, a third cam connecting rod, a fourth cam connecting rod, two third cam connecting rods, two third connecting rods, two fourth connecting rods, a second spring, a second sliding block, a second sliding rail and a second differential head, wherein the third cam, the third cam connecting rod and one of the third connecting rods are arranged in one-to-one correspondence, the fourth cam connecting rod and the other third connecting rod are arranged in one-to-one correspondence, the third cam connecting rod and the fourth cam connecting rod are rotatably arranged at one end of the fine adjustment frame, the third cam and the fourth cam connecting rod are all positioned at one side of the other end of the lens assembly close to the main frame and are all in butt joint with the lens assembly, the third cam and the fourth cam are respectively positioned at two ends of the lens assembly in the X direction, one end of the third cam connecting rod is fixedly connected with one end of the third cam connecting rod, the other end of the third cam connecting rod is hinged with one end of the third connecting rod, the other end of the third cam connecting rod is fixedly connected with one end of the second sliding rail, the other end of the third connecting rod is fixedly connected with the other end of the second sliding rail, the other end of the fourth sliding rod is fixedly connected with the other end of the second sliding rail, the other end of the sliding rod is hinged with the other end of the fourth sliding rod is fixedly connected with one end of the fourth sliding rod, the other sliding rod is fixedly connected with the other end of the sliding rod, one ends of the two fourth connecting rods, which are far away from the second sliding block, are respectively connected with two ends of the second spring.
The beneficial effects of adopting the further scheme are as follows: the second differential head is screwed clockwise, and the screw rod of the second differential head pushes the second sliding block to move forwards along the Y-axis direction. The movement of the second sliding block drives the two fourth connecting rods to move forwards along the Y-axis direction, and the two fourth connecting rods apply acting force to the second springs at the same time, so that the second springs are in a stretching state. The movement of the two fourth connecting rods respectively drive the two third connecting rods to move forwards along the Y-axis direction in a one-to-one correspondence manner. The movement of the two third connecting rods respectively drive the third cam connecting rods and the fourth cam connecting rods to rotate in opposite directions, and further drive the third cams and the fourth cams to rotate in opposite directions.
Further, the fine tuning frame one end has two first through holes and two second through holes, first cam connecting rod with the second cam connecting rod respectively with two first through holes rotate to be connected, third cam connecting rod with the fourth cam connecting rod respectively with two second through holes rotate to be connected.
The beneficial effects of adopting the further scheme are as follows: the first cam connecting rod and the second cam connecting rod rotate in the two first through holes respectively, so that larger displacement errors of the first cam connecting rod and the second cam connecting rod in the rotation process can be avoided. The third cam connecting rod and the fourth cam connecting rod rotate in the two second through holes respectively, so that larger displacement errors of the third cam connecting rod and the fourth cam connecting rod in the rotation process can be avoided.
Further, the first cam link and the second cam link are identical in diameter and length, and the third cam link and the fourth cam link are identical in diameter and length.
The beneficial effects of adopting the further scheme are as follows: the displacement generated by the rotation of the first cam connecting rod and the second cam connecting rod in opposite directions is ensured to be the same as the displacement generated by the rotation of the third cam connecting rod and the fourth cam connecting rod in opposite directions.
Further, the first cam, the second cam, the third cam, and the fourth cam are all on the same horizontal plane.
The beneficial effects of adopting the further scheme are as follows: errors occurring when the lens assembly is driven to move along the Y-axis direction are reduced.
Drawings
FIG. 1 is a schematic diagram of a collimation device of a semiconductor laser according to the present invention;
FIG. 2 is a schematic view of a part of the collimating device of the semiconductor laser according to the present invention;
FIG. 3 is a schematic view of a lens assembly according to the present invention;
FIG. 4 is a schematic view of a lens holder according to the present invention;
FIG. 5 is a cross-sectional view of a lens holder of the present invention;
FIG. 6 is a cross-sectional view of a boss in accordance with the present invention;
FIG. 7 is a schematic view of a fine tuning frame according to the present invention;
FIG. 8 is a schematic view of a first trimming assembly according to the present invention;
FIG. 9 is a schematic diagram of a second trimming assembly according to the present invention;
FIG. 10 is a schematic view of a clockwise rotation first trimming member according to the present invention;
FIG. 11 is a schematic diagram of a counterclockwise rotation first trimming assembly according to the present invention;
FIG. 12 is a schematic diagram of a sleeve collimation method;
FIG. 13 is a schematic view of the center of the sleeve and the center of the light source prior to fastening the sleeve-method laser;
FIG. 14 is a schematic view of the center of the sleeve and the center of the light source after the sleeve-method laser is fastened;
FIG. 15 is a schematic view of the collimation of the lens to the right of the axis M;
FIG. 16 is a schematic view of the collimation of the lens on the axis M;
FIG. 17 is a schematic view of the collimation of the lens to the left of the axis M;
FIG. 18 is a schematic diagram of a first trim component according to the present invention;
Fig. 19 is a schematic view of the first, second, third and fourth cams and lens assembly of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. A main frame; 101. a locking wall; 102. a bolt; 2. a lens assembly; 201. a lens holder; 202. a lens fastener; 203. a bump; 2031. a first positioning surface; 2032. a second positioning surface; 2033. a fastening surface; 204. rubber sponge; 3. a lens fine tuning assembly; 301. a fine tuning frame; 3011. a first slide rail; 3012. a second slide rail; 3013. a first through hole; 3014. a second through hole; 3015. a third through hole; 3016. a fixed block; 302. a first trimming assembly; 3021. a first cam; 3022. a first link; 3023. a first spring; 3024. a first slider; 3025. a first differentiating head; 3026. a first cam link; 3027. a second link; 3028. a second cam; 3029. a second cam link; 303. a second trimming assembly; 3031. a third cam; 3032. a third link; 3033. a second spring; 3034. a second slider; 3035. a second differentiating head; 3036. a third cam link; 3037. a fourth link; 3038. a fourth cam; 3039. a fourth cam link; 4. a sleeve lens; 5. a sleeve main frame; 6. and a laser assembly.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 12, which is a schematic view of a structure of a sleeve method in the related art, a sleeve lens 4 is installed in a sleeve main frame 5. As shown in fig. 13, the center of the sleeve and the center of the light source are schematic before the laser is fastened, and the center line of the light source is collinear with the center line of the lens. As shown in fig. 14, after the laser is fastened, the relative positions of the X-axis and the Y-axis of the lens change due to the line contact after the sleeve fastening, the center line of the light source is not collinear with the center line of the lens, the collimation degree changes, and the data after debugging changes.
As shown in fig. 15-17, there are shown different degrees of collimation of the laser when the sleeve lens 4 is at three different distances from the light source, so the distance of the lens to the light source (laser assembly) directly affects the degree of collimation.
As shown in fig. 1-11 and fig. 18-19, the present embodiment provides a semiconductor laser collimation device, which includes a main frame 1, a lens assembly 2 and a lens trimming assembly 3, wherein one end of the lens assembly 2 is slidably engaged with the main frame 1 along the Y-axis and detachably connected with the main frame 1, and the lens trimming assembly 3 is detachably connected with the top of the main frame 1 and is in transmission connection with the other end of the lens assembly 2.
The lens assembly 2 is mounted in the main frame 1 so as to restrict movement of the lens assembly 2 in the X-axis and Z-axis directions. The lens assembly 2 can be precisely adjusted to move in the main frame 1 along the Y-axis direction through the lens fine adjustment assembly 3, so that the collimation precision is increased, and the stability of the device is improved.
Specifically, the lens assembly 2 and the laser assembly 6 are respectively at both ends of the main frame 1.
On the basis of the above, the lens assembly 2 includes a lens holder 201 and a lens, one end of the lens holder 201 is slidably engaged with the main frame 1 along the Y axis and detachably connected with the main frame 1, the lens holder 201 has a through hole provided along the Y axis, and one end of the through hole is mounted with the lens.
The main frame 1 can limit the displacement of the lens holder 201 and the lens along the X-axis and Z-axis directions, fasten the lens holder 201 and the lens along the X-axis and Z-axis directions, ensure that the relative positions of the lens in the X-axis and Z-axis directions are not changed, the collimation degree is not changed, and the data after debugging are not changed. And ensures that the lens holder 201 can be displaced in the Y-axis direction within the main frame 1.
Specifically, as shown in fig. 5, the lens assembly 2 further includes a lens fastener 202 and a rubber sponge 204, the lens fastener 202 is installed in a through hole at one end of the lens holder 201, and the rubber sponge 204 is provided between the lens fastener 202 and the lens.
Wherein the lens fastener 202 may be an annular fixing block for fixing the lens.
On the basis of the above scheme, the outer wall of the lens assembly 2 is provided with the protruding block 203, the main frame 1 is provided with two locking walls 101 which are oppositely arranged at intervals, a groove matched with the protruding block 203 in shape is formed between the two locking walls 101, and the two locking walls 101 are detachably connected with the protruding block 203.
The engagement of the protrusions 203 with the two locking walls 101 increases the tightness of the lens assembly 2 with the main frame 1.
Specifically, the outer wall of the lens holder 201 is provided with a bump 203.
The upper parts of the two locking walls 101 are fixedly connected through a plurality of bolts 102, so as to clamp the protruding block 203, and prevent the protruding block 203 from moving along the Z-axis direction. After the lens assembly 2 is mounted in the main frame 1, a plurality of the bolts 102 are tightened to increase the tightness of the lens assembly 2 in the main frame 1.
On the basis of the above scheme, the outer wall of the bump 203 has a first positioning surface 2031, a second positioning surface 2032 and a fastening surface 2033 which are sequentially connected, an included angle between the first positioning surface 2031 and the second positioning surface 2032 is an acute angle, and an included angle between the second positioning surface 2032 and the fastening surface 2033 is an acute angle.
The projection 203 has a first positioning surface 2031, a second positioning surface 2032, and a fastening surface 2033 so that five degrees of freedom of the lens assembly 2 other than the movement in the Y-axis direction can be restricted in mounting with the main frame 1.
Specifically, in this embodiment, the longitudinal section of the bump 203 is triangular.
The protruding block 203 may be configured as an inverted triangular prism or a conical body according to actual needs, and sequentially has a first positioning surface 2031, a second positioning surface 2032, and a fastening surface 2033, and a groove matching with the inverted triangular prism or the conical body is disposed in the main frame 1.
On the basis of the above scheme, the lens fine tuning assembly 3 comprises a fine tuning frame 301, a first fine tuning assembly 302 and a second fine tuning assembly 303, wherein the fine tuning frame 301 is detachably connected with the main frame 1, the first fine tuning assembly 302 and the second fine tuning assembly 303 are both connected with the fine tuning frame 301, the first fine tuning assembly 302 is located above the second fine tuning assembly 303, and the first fine tuning assembly 302 and the second fine tuning assembly 303 are both in transmission connection with the other end of the lens assembly 2.
The first trimming component 302 and the second trimming component 303 can drive the lens component 2 to move along the Y-axis direction on the trimming frame 301, so that focal length trimming is realized, collimation precision is improved, and then beam quality and irradiation effect of the laser are improved.
Specifically, the fine tuning frame 301 may be made of stainless steel, so as to improve the service life of the device.
As shown in fig. 7, two third through holes 3015 are disposed at one end of the fine tuning frame 301, and the first fine tuning component 302 and the second fine tuning component 303 are connected to the fine tuning frame 301 through the two third through holes 3015, respectively.
On the basis of the above scheme, the first fine adjustment assembly 302 includes a first cam 3021, a second cam 3028, a first cam link 3026, a second cam link 3029, two first links 3022, two second links 3027, a first spring 3023, a first slider 3024, a first slide 3011, and a first micro head 3025, where the first cam 3021, the first cam link 3026, and one of the first links 3022 are disposed in one-to-one correspondence, the second cam 3028, the second cam link 3029, and another of the first links 3022 are disposed in one-to-one correspondence, the first cam link 3026 and the second cam link 3029 are both rotatably mounted at one end of the fine adjustment frame 301, the first cam 3021 and the second cam 3028 are both located at one side of the lens assembly 2, which is far away from the main frame 1, and are both abutted with the lens assembly 2, the first cam 3021 and the second cam 3028 are respectively located at one end of the first slider 3022, the other end of the first slider 3028 is hinged with the first link 3022, the other end of the first slider 3022 is hinged with the other end of the first link 3027, the other end of the first link 3028 is hinged with the other end of the first link 3022, the other end of the first link 3028 is hinged with the other end of the first link 3022, the other end of the other link 3028 is hinged with the other end of the first link 3022, and one end is hinged to the other end of link 3022 is hinged with the other end of link 2 is hinged to the other end 3 link 2 is hinged to be, the first micro head 3025 is connected to the other end of the fine tuning frame 301, a screw of the first micro head 3025 is fixed to the first slider 3024, and one ends of the two second connecting rods 3027, which are far away from the first slider 3024, are respectively connected to two ends of the first spring 3023.
The first micro head 3025 is screwed counterclockwise, and the screw of the first micro head 3025 pushes the first slider 3024 to move backward in the Y-axis direction. The movement of the first slider 3024 simultaneously drives the two second links 3027 to move backward along the Y axis direction (i.e., move in the Y axis negative direction), and the two second links 3027 simultaneously apply a force to the first spring 3023, so that the first spring 3023 is in a compressed state. The movement of the two second links 3027 respectively drives the two first links 3022 to move backward along the Y-axis direction in a one-to-one correspondence. The movement of the two first links 3022 drives the first cam link 3026 and the second cam link 3029 to rotate in opposite directions, and further drives the first cam 3021 and the second cam 3028 to rotate in opposite directions.
The first micro head 3025 is screwed clockwise, and the screw of the first micro head 3025 pushes the first slider 3024 to move forward in the Y-axis direction. The movement of the first slider 3024 simultaneously drives the two second links 3027 to move forward in the Y-axis direction (i.e., move in the Y-axis positive direction), and the two second links 3027 simultaneously apply a force to the first spring 3023, so that the first spring 3023 is in a stretched state. The movement of the two second links 3027 respectively drives the two first links 3022 to move forward along the Y-axis direction in a one-to-one correspondence. The movement of the two first links 3022 drives the first cam link 3026 and the second cam link 3029 to rotate in opposite directions, and further drives the first cam 3021 and the second cam 3028 to rotate in opposite directions.
Specifically, the first micro-head 3025 has a retractable screw therein, and the first micro-head 3025 is fixedly connected to the fine adjustment frame 301 through the third through hole 3015. The first slider 3024 is moved by 1mm by screwing the first micro head 3025 one turn.
Wherein, two first links 3022 are symmetrically arranged. The two second links 3027 are also symmetrically disposed.
Alternatively, both the first cam 3021 and the second cam 3028 may employ eccentric wheels. And the protruding ends of the first cam 3021 and the second cam 3028 are disposed opposite or facing away from each other.
Alternatively, the first micro-head 3025 may employ a stepper motor or a servo motor, and an output end of the stepper motor or the servo motor is connected to the first slider 3024.
Alternatively, the first slider 3024 and the first slide 3011 may be replaced with a gear and a rack. The gear is rotatably mounted on the first slider 3024, and the first micro head 3025 is connected to the rack and drives the rack to move, and the rack drives the gear to rotate.
In addition, the first cam link 3026, the second cam link 3029, the two first links 3022, the two second links 3027, and the first slider 3024 may be made of stainless steel.
On the basis of the above scheme, the second fine tuning assembly 303 includes a third cam 3031, a fourth cam 3038, a third cam link 3036, a fourth cam link 3039, two third links 3032, two fourth links 3037, a second spring 3033, a second slider 3034, a second slide rail 3012 and a second micro head 3035, the third cam 3031, the third cam link 3036 and one of the third links 3032 are disposed in one-to-one correspondence, the fourth cam 3038, the fourth cam link 3039 and the other of the third links 3032 are disposed in one-to-one correspondence, the third cam link 3036 and the fourth cam link 3039 are rotatably mounted at one end of the fine tuning frame 301, the third cam 3031 and the fourth cam 3038 are located at one side of the other end of the lens assembly 2 close to the main frame 1 and are abutted with the lens assembly 2, the third cam 3031 and the fourth cam 3038 are respectively located at two ends of the lens assembly 2 in the X direction, one end of the third cam 3031 is fixedly connected with one end of the third cam connecting rod 3036, the other end of the third cam connecting rod 3036 is hinged with one end of one of the third connecting rods 3032, the other end of the third connecting rod 3032 is hinged with one end of one of the fourth connecting rods 3037, one end of the fourth cam 3038 is fixedly connected with one end of the fourth cam connecting rod 3039, the other end of the fourth cam connecting rod 3039 is hinged with one end of the other third connecting rod 3032, the other end of the third connecting rod 3032 is hinged with one end of the other fourth connecting rod 3037, the other ends of the two fourth connecting rods 3037 are both hinged with the second sliding rod 3034, the second sliding rail 3012 is fixed on the fine tuning frame 301, the second sliding rod 3034 is slidingly connected with the second sliding rail 3012, the second differential head 3035 is connected to the other end of the fine tuning frame 301, the screw rod of the second differential head 3035 is fixed to the second slider 3034, and one ends of the two fourth links 3037, which are far away from the second slider 3034, are respectively connected to two ends of the second spring 3033.
The second differential head 3035 is screwed clockwise, and the screw of the second differential head 3035 pushes the second slider 3034 to move forward in the Y-axis direction. The movement of the second slider 3034 simultaneously drives the two fourth links 3037 to move forward in the Y-axis direction, and the two fourth links 3037 simultaneously apply an urging force to the second spring 3033 to place the second spring 3033 in a stretched state. The movement of the two fourth links 3037 respectively drives the two third links 3032 to move forward in the Y-axis direction in a one-to-one correspondence. The movement of the two third connecting rods 3032 respectively drives the third cam connecting rod 3036 and the fourth cam connecting rod 3039 to rotate in opposite directions, so as to respectively drive the third cam 3031 and the fourth cam 3038 to rotate in opposite directions.
Specifically, the second differential head 3035 has a retractable screw therein, and the second differential head 3035 is fixedly connected to the fine tuning frame 301 through the third through hole 3015. The second micro head 3035 is screwed one turn and the second slider 3034 moves 1mm. The first micro head 3025 or the second micro head 3035 is screwed by 50mm, so that the lens assembly 2 can be driven to move by 0.1mm, and the focal length fine adjustment is realized with a secondary magnification.
Wherein, two third connecting rods 3032 are symmetrically arranged. The two fourth links 3037 are also symmetrically disposed.
Alternatively, the third cam 3031 and the fourth cam 3038 may each use an eccentric, and the protruding ends of the third cam 3031 and the fourth cam 3038 are disposed opposite to each other or are disposed opposite to each other.
Alternatively, the second differential head 3035 may employ a stepper motor or a servo motor, the output of which is coupled to the second slider 3034.
Alternatively, the second slider 3034 and the second slide 3012 can be replaced with a gear and rack. The gear is rotatably mounted on the second slider 3034, and the second differential head 3035 is connected to the rack and drives the rack to move, and the rack drives the gear to rotate.
In addition, the third cam link 3036, the fourth cam link 3039, the third link 3032, the fourth link 3037 and the second slider 3034 may be made of stainless steel.
As shown in fig. 18, a schematic diagram of the first trimming assembly 302 is identical to a schematic diagram of the second trimming assembly 303. As shown in fig. 19, in the present embodiment, the protruding ends of the first cam 3021 and the second cam 3028 are provided opposite to each other, and the protruding ends of the third cam 3031 and the fourth cam 3038 are provided opposite to each other in an initial state. The protruding ends of the first cam 3021 and the second cam 3028 may be disposed opposite to each other, and the protruding ends of the third cam 3031 and the fourth cam 3038 may be disposed opposite to each other in the initial state.
In other words, the first cam 3021 and the second cam 3028 are symmetrical about the axis of the lens assembly 2. The third cam 3031 and the fourth cam 3038 are symmetrical about the axis of the lens assembly 2. When the first cam 3021 and the second cam 3028 are rotated to push the lens holder 201, the third cam 3031 and the fourth cam 3038 escape from the movement of the lens holder 201. When the third cam 3031 and the fourth cam 3038 are rotated to push the lens holder 201, the first cam 3021 and the second cam 3028 escape the movement of the lens holder 201.
When the lens holder 201 is driven to move backward in the Y-axis direction (i.e., move in the Y-axis negative direction), the second trimming member 303 needs to be adjusted first so that the third cam 3031 and the fourth cam 3038 are away from and abut against the lens holder 201, and then the first trimming member 302 is adjusted so that the protruding end portions of the first cam 3021 and the second cam 3028 apply a force to the lens holder 201 to perform the focal length trimming of the lens backward in the Y-axis direction.
When the lens holder 201 is driven to move forward in the Y-axis direction (i.e., move forward in the Y-axis direction), the first trimming assembly 302 needs to be adjusted first so that the first cam 3021 and the second cam 3028 are away from and abut against the lens holder 201, and then the second trimming assembly 303 is adjusted so that the protruding end portions of the third cam 3031 and the fourth cam 3038 apply a force to the lens holder 201 to perform focal length trimming of the lens forward in the Y-axis direction.
On the basis of the above scheme, one end of the fine tuning frame 301 has two first through holes 3013 and two second through holes 3014, the first cam link 3026 and the second cam link 3029 are respectively rotatably connected to the two first through holes 3013, and the third cam link 3036 and the fourth cam link 3039 are respectively rotatably connected to the two second through holes 3014.
The first cam link 3026 and the second cam link 3029 rotate in the two first through holes 3013, respectively, so that a large displacement error of the first cam link 3026 and the second cam link 3029 during rotation can be avoided. The third cam link 3036 and the fourth cam link 3039 rotate in the two second through holes 3014, respectively, so that a large displacement error of the third cam link 3036 and the fourth cam link 3039 in the rotation process can be avoided.
Specifically, the fine tuning frame 301 includes a fixing block 3016, as shown in fig. 7, the fixing block 3016 is a step fixing block, one end of the fixing block 3016 has two first through holes 3013, and the other end of the fixing block 3016 has two second through holes 3014.
Wherein, the fixing block 3016 can be made of stainless steel.
On the basis of the above-described scheme, the diameters and lengths of the first and second cam links 3026 and 3029 are the same, and the diameters and lengths of the third and fourth cam links 3036 and 3039 are the same.
The displacement of the first and second cam links 3026 and 3029 in the opposite direction rotation to each other is ensured to be the same as the displacement of the third and fourth cam links 3036 and 3039 in the opposite direction rotation to each other.
Specifically, the diameters of the two first through holes 3013 are slightly larger than the diameters of the first cam link 3026 and the second cam link 3029, respectively, and the diameters of the two second through holes 3014 are slightly larger than the diameters of the third cam link 3036 and the fourth cam link 3039, respectively.
On the basis of the above, the first cam 3021, the second cam 3028, the third cam 3031 and the fourth cam 3038 are all on the same horizontal plane.
Errors occurring when the lens assembly 2 is driven to move in the Y-axis direction are reduced.
Specifically, the heights of the first and second cam links 3026 and 3029 are greater than the heights of the third and fourth cam links 3036 and 3039, respectively.
In this embodiment, in use, first, the lens is mounted in the lens holder 201, and then mounted in the main frame 1 via the bump 203. Subsequently, the plurality of bolts 102 between the two locking walls 101 are tightened, thereby restricting the movement of the lens holder 201 in the X-axis and Z-axis directions;
Secondly, the second micro head 3035 is screwed clockwise, and under the action of the third connecting rod 3032, the fourth connecting rod 3037 and the second spring 3033, the third cam 3031 can be driven to rotate clockwise, and the fourth cam 3038 rotates anticlockwise, so that the third cam 3031 and the fourth cam 3038 are far away from and abutted with the lens holder 201;
Again, when the first micro head 3025 is screwed counterclockwise, the first cam 3021 is driven to rotate counterclockwise by the first link 3022, the second link 3027, and the first spring 3023, the second cam 3028 rotates clockwise, and the protruding end portions of the first cam 3021 and the second cam 3028 apply force to the lens assembly 2, so that the lens holder 201 is driven to move backward in the Y-axis direction, and fine adjustment of the focal length of the lens backward in the Y-axis direction is achieved.
Finally, the plurality of bolts 102 between the two locking walls 101 are again tightened, tightening the fine adjustment of the lens. The second micro head 3035 and the first micro head 3025 are then released, at which time the first cam 3021 rotates clockwise, the second cam 3028 rotates counterclockwise, the third cam 3031 rotates clockwise, the fourth cam 3038 rotates counterclockwise, and the first cam 3021, the second cam 3028, the third cam 3031 and the fourth cam 3038 are all brought into abutment away from the lens holder 201, and the lens fine adjustment assembly 3 is removed in preparation for the next laser alignment.
In the description of the present invention, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. The utility model provides a semiconductor laser collimation device, its characterized in that includes body frame (1), lens subassembly (2) and lens fine setting subassembly (3), the one end of lens subassembly (2) with body frame (1) are followed Y axle sliding fit and are connected with body frame (1) can be dismantled, lens fine setting subassembly (3) with the top of body frame (1) can be dismantled and be connected, and with the other end transmission of lens subassembly (2) is connected.
2. A semiconductor laser collimation device according to claim 1, characterized in that the lens assembly (2) comprises a lens holder (201) and a lens, one end of the lens holder (201) being slidingly engaged with the main frame (1) along the Y-axis and being detachably connected to the main frame (1), the lens holder (201) having a through hole arranged along the Y-axis, one end of the through hole being mounted with the lens.
3. A semiconductor laser alignment device according to claim 1, wherein the outer wall of the lens assembly (2) is provided with a bump (203), the main frame (1) is provided with two locking walls (101) arranged oppositely at intervals, a groove matching with the bump (203) in shape is formed between the two locking walls (101), and the two locking walls (101) are detachably connected with the bump (203).
4. A semiconductor laser collimation device according to claim 3, characterized in that the outer wall of the projection (203) is provided with a first positioning surface (2031), a second positioning surface (2032) and a fastening surface (2033) which are sequentially connected, an included angle between the first positioning surface (2031) and the second positioning surface (2032) is an acute angle, and an included angle between the second positioning surface (2032) and the fastening surface (2033) is an acute angle.
5. A semiconductor laser alignment device according to claim 1, characterized in that the lens trimming assembly (3) comprises a trimming frame (301), a first trimming assembly (302) and a second trimming assembly (303), the trimming frame (301) is detachably connected with the main frame (1), the first trimming assembly (302) and the second trimming assembly (303) are both connected with the trimming frame (301), the first trimming assembly (302) is located above the second trimming assembly (303), and the first trimming assembly (302) and the second trimming assembly (303) are both in transmission connection with the other end of the lens assembly (2).
6. The alignment device according to claim 5, wherein the first micro-adjustment assembly (302) comprises a first cam (3021), a second cam (3028), a first cam link (3026), a second cam link (3029), two first links (3022), two second links (3027), a first spring (3023), a first slider (3024), a first slide rail (3011) and a first micro-head (3025), the first cam (3021), the first cam link (3026) and one of the first links (3022) are arranged in a one-to-one correspondence, the second cam (3028), the second cam link (3029) and the other of the first links (3022) are arranged in a one-to-one correspondence, the first cam link (3026) and the second cam link (3029) are each rotatably mounted at one end of the micro-adjustment frame (301), the first cam (3021) and the second cam (3028) are each located at the other end of the first cam (3022) and the second cam (3028) and are each connected to one end (3022) of the first lens frame (1) in a one-to-one end (2), the other end of first cam connecting rod (3026) is articulated with one of them one end of first connecting rod (3022), the other end of first connecting rod (3022) is articulated with one of them one end of second connecting rod (3027), the one end of second cam (3028) with one end fixed connection of second cam connecting rod (3029), the other end of second cam connecting rod (3029) is articulated with another one end of first connecting rod (3022), the other end of first connecting rod (3022) is articulated with another one end of second connecting rod (3027), two the other end of second connecting rod (3027) all with first slider (3024) is articulated, be fixed with first slide rail (3011) on fine setting frame (301), first slider (3024) with first slide rail (3011) sliding connection, first micro-head (3025) with the other end of fine setting frame (301), first micro-head (3025) with two ends of first slider (3027) are connected with first screw rod (3024) respectively.
7. The semiconductor laser alignment device according to claim 6, wherein the second micro-adjustment assembly (303) comprises a third cam (3031), a fourth cam (3038), a third cam link (3036), a fourth cam link (3039), two third links (3032), two fourth links (3037), a second spring (3033), a second slider (3034), a second slide rail (3012) and a second micro-head (3035), the third cam (3031), the third cam link (3036) and one of the third links (3032) are arranged in a one-to-one correspondence, a fourth cam (3038), a fourth cam link (3039) and the other of the third links (3032) are arranged in a one-to-one correspondence, the third cam link (3036) and the fourth cam link (3039) are each rotatably mounted at one end of the micro-adjustment frame (301), the third cam (3031) and the fourth cam (3038) are each located at the other end of the cam frame (3032) near the other end of the third cam (3031) and the other end of the third lens assembly (3031) are respectively fixed at the one end (3031), the other end of the third cam connecting rod (3036) is hinged with one end of the third connecting rod (3032), the other end of the third connecting rod (3032) is hinged with one end of the fourth connecting rod (3037), one end of the fourth cam (3038) is fixedly connected with one end of the fourth cam connecting rod (3039), the other end of the fourth cam connecting rod (3039) is hinged with one end of the other third connecting rod (3032), the other end of the third connecting rod (3032) is hinged with one end of the other fourth connecting rod (3037), the other ends of the two fourth connecting rods (3037) are hinged with the second sliding rail (3034), the second sliding rail (3012) is fixed on the fine tuning frame (301), the second sliding rail (3034) is in sliding connection with one end of the second sliding rail (3012), the second micro-dividing head (3035) is connected with the other end of the third connecting rod (3032), and the second micro-dividing head (3035) is far away from the second sliding rail (3034) and the two ends of the second connecting rod (3034) are respectively connected with the two ends of the second sliding rod (3034).
8. The semiconductor laser alignment device according to claim 7, wherein the fine tuning frame (301) has two first through holes (3013) and two second through holes (3014) at one end, the first cam link (3026) and the second cam link (3029) are respectively rotatably connected to the two first through holes (3013), and the third cam link (3036) and the fourth cam link (3039) are respectively rotatably connected to the two second through holes (3014).
9. The semiconductor laser alignment device of claim 8 wherein the first cam link (3026) and the second cam link (3029) are identical in diameter and length and the third cam link (3036) and the fourth cam link (3039) are identical in diameter and length.
10. The semiconductor laser alignment device according to claim 8, wherein the first cam (3021), the second cam (3028), the third cam (3031) and the fourth cam (3038) are all on the same horizontal plane.
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| CN202410423955.1A CN118017346B (en) | 2024-04-10 | 2024-04-10 | Semiconductor laser collimation device |
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| CN202410423955.1A CN118017346B (en) | 2024-04-10 | 2024-04-10 | Semiconductor laser collimation device |
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