CN115113360B - Focusing device and focusing method for structured light laser light source - Google Patents
Focusing device and focusing method for structured light laser light source Download PDFInfo
- Publication number
- CN115113360B CN115113360B CN202210674689.0A CN202210674689A CN115113360B CN 115113360 B CN115113360 B CN 115113360B CN 202210674689 A CN202210674689 A CN 202210674689A CN 115113360 B CN115113360 B CN 115113360B
- Authority
- CN
- China
- Prior art keywords
- focusing
- knob
- hole
- collimating lens
- structured light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 14
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000012780 transparent material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001917 fluorescence detection Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/40—Optical focusing aids
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
The invention belongs to the technical field of laser, and relates to a focusing device and a focusing method of a structured light laser light source, wherein the main structure of the focusing device comprises a shell, and a laser light source assembly, a spring, a collimating mirror assembly, a focusing movable bracket and a focusing knob are sequentially and coaxially arranged in the shell; the structure light component is positioned inside the focusing movable bracket and the focusing knob and is in threaded connection with the shell; the extrusion force of the focusing knob is transmitted to the collimating lens component through the focusing movable bracket, the lower end of the collimating lens component is subjected to the elasticity of the spring, and under the action of the focusing knob and the spring, the collimating lens component can slide upwards or downwards by controlling the focusing knob to rotate upwards or downwards, so that accurate focusing is realized; the whole structure design is ingenious, the whole focusing process does not need to rotate the collimating lens and the structural light element, and the pattern formed by the structural light element is not influenced; and the components are reasonably matched, the focusing precision is high, the operation is convenient, the mass production is convenient, and the market prospect is wide.
Description
Technical field:
the invention belongs to the technical field of laser, and relates to a focusing device and a focusing method of a structured light laser light source. .
The background technology is as follows:
the structured light laser light source is a laser light source for converting laser points into various other forms such as lines, rings, square spots, patterns and the like. Taking laser lines as an example, the laser line light source is widely applied, and the conventional line light source is widely applied to building marking, industrial marking, warning indication, laser radar, micron-sized line laser light source, machine vision, face recognition, fluorescence detection and the like. For example, chinese patent application CN201310353024.0 discloses a universal rear focusing device for a laser light source, wherein a connecting rod fixedly connected with the adjusting sleeve is driven by a rotating focusing hand wheel to rotate a shaft sleeve connected with the inner end of the connecting rod through a mandrel, then the adjusting sleeve is driven by a universal rod connected with the shaft sleeve and the adjusting sleeve to rotate, and the adjusting sleeve is in threaded connection with the inner wall of the shell, and the shell is relatively static, so that the adjusting sleeve moves back and forth along the axial direction, and then a laser tube seat fixedly connected with the adjusting sleeve is driven to move back and forth along the axial direction, thereby realizing the adjustment of the focal length of the laser light source by changing the position of the light source; chinese patent application cn201822257860.X discloses a laser instrument autofocus device, including laser optical bench, focusing module, light path switching-over module, vision positioning module and scanning shake the camera lens, focusing module sets firmly in the front side of laser optical bench, light path switching-over module sets up in focusing module's inside, vision positioning module sets up in focusing module's one side, the scanning shakes the camera lens and sets up in focusing module's front side, vision positioning module and scanning shake the camera lens and can be for laser optical bench lift removal under focusing module's effect, the light path of laser optical bench transmits to the scanning shakes the camera lens after the switching-over effect of light path switching-over module, only need lift scanning shakes the camera lens when adjusting the focus.
But the line laser light source used in the market can be focused, and the direction of the laser line can also rotate along with the focusing process, so that the original direction cannot be kept for use, and the line also rotates along with the focus when the focus is changed, as shown in fig. 1.
The invention comprises the following steps:
the invention aims to overcome the defects of the prior art and provide a focusing device and a focusing method of a structured light laser light source, which have the advantages of no change of patterns formed by structured light elements in the focusing process, high focusing precision and convenient operation.
In order to achieve the above purpose, the invention provides a focusing method of a structured light laser light source, which is realized by a focusing device, wherein the main structure of the focusing device comprises a shell, a laser light source component, a spring, a collimating lens component, a focusing movable bracket, a structured light component and a focusing knob, and the laser light source component, the spring, the collimating lens component, the focusing movable bracket and the focusing knob are coaxially arranged in the shell in sequence; the focusing movable bracket and the collimating lens component can slide up and down; the structure light component is positioned inside the focusing movable bracket and the focusing knob and is in threaded connection with the shell; the extrusion force of the focusing knob is transmitted to the collimating lens component through the focusing movable support, the lower end of the collimating lens component is subjected to the elastic force of the spring, and under the action of the focusing knob and the spring, the collimating lens component can slide upwards or downwards by controlling the focusing knob to rotate upwards or downwards, so that accurate focusing is realized.
The central hole of the shell is sequentially divided into a knob threaded hole, a focusing bracket movable hole, a hollowed platform, a collimating lens component movable hole and a pump support threaded hole according to an assembly area, wherein the knob threaded hole is used for assembling a focusing knob; the inner diameter of the movable hole of the focusing support is smaller than that of the threaded hole of the knob, and the movable hole is in clearance fit with the focusing support, so that the focusing support can conveniently move up and down; the center of the hollow platform is provided with a through hole, the through hole is connected with the structured light assembly in a matching way, and hollow holes are formed in the periphery of the platform and are used for facilitating the movable focusing support to penetrate through the hollow platform and contact with the collimating lens assembly; the movable hole of the collimating lens component is used for assembling the collimating lens component and facilitating the up-and-down movement of the collimating lens component; the pump branch threaded hole is used for assembling the laser source component.
The laser light source component comprises a light-emitting light source and a heat sink, wherein the outer surface of the heat sink is provided with threads and is arranged in a pump branch threaded hole of the shell; the bottom of the heat sink is provided with a step hole and an insertion hole, the step hole is used for assembling the luminous light source, and the step hole is in interference fit with the luminous light source; the insertion hole is used for facilitating the insertion of a tiny tool, and the heat sink is screwed to enable the screw thread of the heat sink to penetrate into the shell.
The spring is positioned between the laser light source component and the collimating lens component, the spring is used for supporting the collimating lens component and applying upward elastic force to the collimating lens component, and when the focusing knob rotates upward, the collimating lens component moves upward under the action of the elastic force of the spring.
The collimating lens component comprises a collimating lens support and a collimating lens, wherein the collimating lens support is positioned in a collimating lens component moving hole of a shell, and the outer surface of the collimating lens support is a smooth surface and can slide up and down in the shell; the collimating lens bracket is internally provided with a step hole for bearing a collimating lens; the collimating lens is adhered to the collimating lens bracket through an adhesive.
The focusing movable bracket is positioned between the focusing knob and the collimating lens component and is used for transmitting the extrusion force of the focusing knob to the collimating lens component to enable the collimating lens component to slide downwards; the focusing movable support comprises a table top and a transmission rod, wherein a through hole is formed in the table top and is used for facilitating the passage of the structured light assembly; the transmission rods are arranged at the bottom of the table top at intervals, the positions of the transmission rods correspond to the hollowed-out platforms on the shell, and the transmission rods penetrate through the hollowed-out platforms to contact with the collimating lens component; the upper end of the table top is contacted with the focusing knob; because the transmission rod passes through the hollow platform of the shell, the support of the shell to the structural light component is not affected when the focusing movable support moves up and down.
The invention relates to a structured light component, which comprises a structured light component bracket and an optical component, wherein the structured light component bracket comprises a structured light component step hole and a light path through hole, and the optical component is arranged in the structured light component step hole; the inner diameter and the outer diameter of the light path through hole are smaller than those of the step hole of the structural light element, and the outer wall of the light path through hole is provided with threads for being in threaded connection with the through hole of the hollowed-out platform of the shell; the structure light element support further comprises a transverse notch and a limiting step, wherein the transverse notch is used for facilitating the rotation screwing of the structure light element support by using a straight screwdriver in the screwing process of the structure light element support into the shell; the limiting step is used for limiting the screwing-out degree of the focusing knob and avoiding complete screwing-out; the notch at the bottom of the outer wall thread of the light path through hole is a tool withdrawal groove, and the structural light element support can be screwed to the bottom, so that the bottom table surface of the structural light element support is tightly matched with the upper surface of the hollowed-out platform.
The focusing knob comprises a knob step hole and a knob through hole, wherein the inner diameter of the knob step hole is larger than that of the knob through hole, the knob through hole is used for facilitating the passage of the structural optical element support and the assembly of the structural optical element support with the shell, and the knob step hole is matched with a limiting step of the structural optical element support to play a limiting role, so that the focusing knob is prevented from falling off due to excessive twisting; the outer wall of the knob step hole is provided with knob threads which are matched with the shell threads to adjust the depth, and the depth is transmitted to the collimating lens bracket through the focusing movable bracket, so that the focal length is adjusted; the focusing knob also comprises a knob ring and a knob washer groove, wherein the outer diameter of the knob ring is larger than that of the knob step hole, so that the focusing knob is convenient for hand twisting; the knob gasket groove is used for placing the rubber ring.
Compared with the prior art, the invention has ingenious overall structural design, and through the hollow platform and the transmission structural member, not only can the force of screw thread focusing be transmitted to the collimating mirror bracket, but also the structural light element bracket can be borne; the whole focusing process does not need to rotate a collimating mirror and a structural light element and does not influence the pattern formed by the structural light element, so that focused structural light can be obtained at different positions; and the components are reasonably matched, the focusing precision is high, the operation is convenient, the mass production is convenient, and the market prospect is wide.
Description of the drawings:
fig. 1 is a schematic diagram of a focusing process in the prior art.
Fig. 2 is a schematic diagram of the overall structure of a focusing device of a structured light laser light source according to the present invention.
Fig. 3 is a schematic structural diagram of a housing according to the present invention, wherein a is an axial cross-sectional structural diagram, and B is an overall structural diagram.
Fig. 4 is a schematic structural diagram of a TO package LD heatsink according TO the present invention.
Fig. 5 is a schematic structural diagram of a focusing movable support according to the present invention.
Fig. 6 is a schematic structural diagram of a structured light element support according to the present invention, wherein a is an axial section structure diagram, B is an overall structure diagram, and C is an assembly diagram.
Fig. 7 is a schematic structural diagram of a focusing knob according to the present invention, wherein a is an axial section structural diagram, and B is an overall structural diagram.
The specific embodiment is as follows:
the invention will now be further illustrated by means of specific examples in connection with the accompanying drawings.
Example 1:
the embodiment relates to a focusing method of a structured light laser light source, which is realized by a focusing device, wherein the main structure of the focusing device comprises a shell 1, a laser light source component 2, a spring 3, a collimating mirror component 6, a focusing movable bracket 4, a structured light component 7 and a focusing knob 5, wherein the laser light source component 2, the spring 3, the collimating mirror component, the focusing movable bracket 4 and the focusing knob 5 are sequentially and coaxially arranged in the shell 1; the focusing movable bracket 4 and the collimating lens component 6 can slide up and down; the structured light component 7 is positioned inside the focusing movable bracket 4 and the focusing knob 5, is in threaded connection with the shell 1 and is used for converting laser points into line laser or other pattern laser; the extrusion force of the focusing knob 5 is transmitted to the collimating lens component through the focusing movable support 4, the lower end of the collimating lens component 6 is subjected to the elastic force of the spring 3, and under the action of the focusing knob 5 and the spring 3, the collimating lens component 6 can slide upwards or downwards by controlling the focusing knob 5 to rotate upwards or downwards, so that accurate focusing is realized.
The center hole of the shell 1 is sequentially divided into a knob threaded hole 101, a focusing bracket movable hole 102, a hollowed-out platform 103, a collimating lens component movable hole 104 and a pump support threaded hole 105 according to an assembly area, wherein the knob threaded hole 101 is used for assembling a focusing knob 5; the inner diameter of the movable hole 102 of the focusing support is smaller than that of the threaded hole 101 of the knob, and the movable hole is in clearance fit with the movable focusing support 4, so that the movable focusing support 4 can conveniently move up and down; the center of the hollow platform 103 is provided with a through hole, the through hole is connected with the structured light assembly 7 in a matching way, and hollow holes are formed in the periphery of the platform and are used for facilitating the movable focusing support 4 to pass through the hollow platform 103 and contact with the collimating lens assembly; the collimator lens assembly movable hole 104 is used for assembling the collimator lens assembly and facilitating the up-and-down movement of the collimator lens assembly; the pump branch screw hole 105 is used for assembling the laser light source assembly 2.
The laser light source assembly 2 comprises a light-emitting light source 21 and a heat sink 22, wherein the outer surface of the heat sink 22 is provided with threads, and the threads are arranged in a pump branch threaded hole 105 of the shell 1; the bottom of the heat sink 22 is provided with a step hole 221 and an insertion hole 222, the step hole 221 is used for assembling the luminous light source 21, and the step hole 221 is in interference fit with the luminous light source 21; the insertion hole 222 is used to facilitate insertion of tweezers, or other small tools, screwing the heat sink 22 into the housing; the light emitting source 21 of the present embodiment is a TO package LD including TO33, TO56, TO9, F package, C package, plastic package, and other LD package forms.
The spring 3 is located between the laser light source assembly 2 and the collimating mirror assembly, the spring 3 is used for supporting the collimating mirror assembly and applying upward elastic force to the collimating mirror assembly, and when the focusing knob 5 rotates upward, the collimating mirror assembly moves upward under the elastic force of the spring 3.
The collimating lens assembly 6 comprises a collimating lens bracket 61 and a collimating lens 62, the collimating lens bracket 61 is positioned in a collimating lens assembly movable hole 104 of the shell 1, the outer surface of the collimating lens bracket 61 is a smooth surface, and the collimating lens bracket 61 can slide up and down in the shell 1; a step hole is arranged in the collimating lens bracket 61 and is used for bearing a collimating lens 62; the collimator lens 62 is adhered to the collimator lens holder 61 by an adhesive.
The focusing movable bracket 4 is positioned between the focusing knob 5 and the collimating lens component 6 and is used for transmitting the extrusion force of the focusing knob 5 to the collimating lens component 6 so as to enable the collimating lens component 6 to slide downwards; the focusing movable support 4 comprises a table top 401 and a transmission rod 402, a through hole 404 is formed in the table top 401, and the through hole 404 is used for facilitating the passage of the structured light assembly 7; the transmission rods 404 are arranged at the bottom of the table top 401 at intervals, the positions of the transmission rods 404 correspond to the hollowed-out platforms 103 on the shell 1, and the transmission rods 404 penetrate through the hollowed-out platforms 103 to contact with the collimating lens component 6; the upper end of the table top 401 is contacted with the focusing knob 5; because the transmission rod 402 passes through the hollowed-out platform 103 of the shell 1, the support of the shell to the structured light assembly 7 is not affected when the focusing movable support 4 moves up and down.
The structured light assembly 7 comprises a structured light element support 71 and an optical element 72, wherein the structured light element support 71 comprises a structured light element step hole 711 and an optical path through hole 712, and the optical element 72 is arranged in the structured light element step hole 711; the inner diameter and the outer diameter of the light path through hole 712 are smaller than those of the structural light element step hole 711, and threads are arranged on the outer wall of the light path through hole 712 and are used for being in threaded connection with the through hole of the hollowed-out platform 103 of the shell 1; the structural light element support 71 further comprises a transverse notch 713 and a limiting step 714, wherein the transverse notch 713 is used for facilitating the rotary screwing of the structural light element support 71 by using a straight screwdriver in the screwing process of the structural light element support 71 into the shell 1; the limiting step 714 is used for limiting the unscrewing degree of the focusing knob 5 and avoiding complete unscrewing; the notch at the bottom of the outer wall thread of the light path through hole 712 is a tool retracting groove, so that the structural light element support 71 can be screwed to the bottom, and the bottom table surface of the structural light element support 71 is tightly matched with the upper surface of the hollowed-out platform 103.
The focusing knob 5 comprises a knob step hole 51 and a knob through hole 52, the inner diameter of the knob step hole 51 is larger than that of the knob through hole 52, the knob through hole 52 is used for facilitating the passage of the structural light element support 71 and the assembly of the structural light element support 71 with the shell 1, the knob step hole 51 is matched with a limiting step 714 of the structural light element support 71 to play a limiting role, and the falling-off of the focusing knob 5 due to excessive torsion is avoided; the outer wall of the knob step hole 51 is provided with knob threads which are matched with the threads of the shell 1 to adjust the depth, and the depth is transmitted to the collimating lens bracket 61 through the focusing movable bracket 4, so that the focal length is adjusted. The focusing knob 5 also comprises a knob ring 53 and a knob gasket groove 54, wherein the outer diameter of the knob ring 53 is larger than that of the knob step hole 51, so that the focusing knob is convenient for hand twisting; the knob gasket groove 54 is used for placing a rubber ring, and the outer diameter of the rubber ring is slightly larger than that of the knob step hole 51, for example, 0.2mm larger, so that the focusing knob cannot shake randomly due to a thread gap after being in threaded fit with the shell; the rubber ring inner diameter is slightly smaller than the outer diameter of the knob washer groove 54, for example, 0.2mm smaller, so that the rubber ring can be tightly matched without loosening when sleeved at the notch position; the diameter of the rubber coil wire (the wire diameter is called as the wire diameter in the industry) is slightly smaller than the width of the notch so as to be convenient for sleeving and assembling.
The materials of the housing 1, the heat sink 22, the collimator lens holder 61, the focusing movable holder 4, the structured light element holder 71 and the focusing knob 5 described in this embodiment are most preferably metal materials such as copper, aluminum, stainless steel, etc., but may be nonmetal materials such as plastics, bakelite, ceramics, glass, etc. when the strength and accuracy requirements are not high.
The optical element in this embodiment is a powell lens, and the most preferable material is a transparent material such as glass, quartz, or sapphire, and when the accuracy or stability is not high, a transparent material such as plastic or resin may be used. The optical element may also be a wave mirror, a cylindrical lens or other element, device, component.
The material of the collimating lens in this embodiment is most preferably transparent material such as glass, quartz, sapphire, etc., and may be PMMA, PC, etc. when the precision requirement is not high; the collimating lens is most preferably a plano-convex lens, but also a biconvex lens, a cemented lens, or a positive lens group, and the main functions of the collimating lens are as follows: the large-angle laser emitted by the luminous light source is focused to a small angle required, so that the laser point can be remotely transmitted or focused to a size required by machine vision identification when being converted into a line or other patterns.
The method for using the focusing device of the structured light laser light source in this embodiment is as follows:
(1) Firstly, assembling a laser light source assembly, a collimating lens assembly and a structured light assembly;
(2) Then sequentially installing a collimating lens assembly, a spring and a laser light source assembly at the bottom of the shell, and screwing the laser light source assembly into the shell in a rotating way;
(3) Firstly, installing a focusing movable support on the upper part of the shell, enabling a transmission rod of the focusing movable support to pass through a hollowed-out platform of the shell to be in contact with the collimating lens assembly, sleeving a rubber ring into a notch of a focusing knob, screwing the focusing knob into the shell, and enabling the focusing knob to be in contact with the focusing movable support; finally, the structured light component passes through the focusing knob, and is screwed into the hollowed-out platform of the shell by using a straight screwdriver, so that the bottom table surface of the structured light element bracket is tightly matched with the upper surface of the hollowed-out platform;
(4) Focusing is carried out by rotating the focusing knob, and when the focusing knob is rotated downwards, the extrusion force of the focusing knob is transmitted to the collimating lens component through the focusing movable bracket, and the collimating lens component moves downwards; when the rotary focusing is rotated upwards, the collimating mirror assembly moves upwards under the elasticity of the spring, so that accurate focusing is realized.
According to the embodiment, the hollowed-out platform is arranged on the shell, so that external, manual and threaded focusing force can be transmitted to the collimating lens support, and the structural optical element support can be borne.
According to the embodiment, the focal length is adjusted by extrusion of the internal spring and matching with the external screwable threads; the external screw thread rotation adjustment focus has the advantages that the precision is good when the adjustment is controlled manually, the precision is related to the screw thread diameter and the screw thread interval specification, and the larger the diameter is, the smaller the screw thread interval is, the better the precision is.
The embodiment sets the focusing movable support as a transmission element, and directly adjusts the collimating mirror when the external threads are used for rotating and adjusting the depth, and the collimating mirror does not need to be rotated, and the structural light element does not need to be rotated. The advantage of not rotating the collimating lens is that the decentration of the collimating lens caused by the rotating process is avoided; the advantage of not rotating the structured light element is that rotation of the light spot formed by the structured light element is avoided.
Claims (8)
1. The focusing method of the structured light laser light source is characterized in that the method is realized through a focusing device, the main structure of the focusing device comprises a shell, a laser light source component, a spring, a collimating lens component, a focusing movable bracket, a structured light component and a focusing knob, and the laser light source component, the spring, the collimating lens component, the focusing movable bracket and the focusing knob are coaxially arranged in the shell in sequence; the focusing movable bracket and the collimating lens component can slide up and down; the structure light component is positioned inside the focusing movable bracket and the focusing knob and is in threaded connection with the shell; the extrusion force of the focusing knob is transmitted to the collimating lens component through the focusing movable bracket, the lower end of the collimating lens component is subjected to the elasticity of the spring, and under the action of the focusing knob and the spring, the collimating lens component can slide upwards or downwards by controlling the focusing knob to rotate upwards or downwards, so that accurate focusing is realized; the whole focusing process does not need to rotate the collimating lens component and the structured light component and does not influence the pattern formed by the structured light element, so that focused structured light is obtained at different positions.
2. The focusing method of the structured light laser light source according to claim 1, wherein the central hole of the housing is sequentially divided into a knob threaded hole, a focusing bracket movable hole, a hollow platform, a collimating lens component movable hole and a pump branch threaded hole according to an assembling area, and the knob threaded hole is used for assembling a focusing knob; the inner diameter of the movable hole of the focusing support is smaller than that of the threaded hole of the knob, and the movable hole is in clearance fit with the focusing support, so that the focusing support can conveniently move up and down; the center of the hollow platform is provided with a through hole, the through hole is connected with the structured light assembly in a matching way, and hollow holes are formed in the periphery of the platform and are used for facilitating the movable focusing support to penetrate through the hollow platform and contact with the collimating lens assembly; the movable hole of the collimating lens component is used for assembling the collimating lens component and facilitating the up-and-down movement of the collimating lens component; the pump branch threaded hole is used for assembling the laser source component.
3. The focusing method of the structured light laser light source according to claim 1, wherein the laser light source assembly comprises a light-emitting light source and a heat sink, the outer surface of the heat sink is a thread and is arranged in a pump branch threaded hole of the housing; the bottom of the heat sink is provided with a step hole and an insertion hole, the step hole is used for assembling the luminous light source, and the step hole is in interference fit with the luminous light source; the insertion hole is used for facilitating the insertion of a tiny tool, and the heat sink is screwed to enable the screw thread of the heat sink to penetrate into the shell.
4. The focusing method of a structured light laser light source according to claim 1, wherein the spring is located between the laser light source assembly and the collimator assembly, the spring is used for supporting the collimator assembly and applying an upward elastic force to the collimator assembly, and when the focusing knob is rotated upward, the collimator assembly moves upward under the elastic force of the spring.
5. The focusing method of the structured light laser source according to claim 1, wherein the collimator lens assembly comprises a collimator lens support and a collimator lens, the collimator lens support is positioned in the collimator lens assembly moving hole of the housing, and the outer surface of the collimator lens support is a smooth surface and can slide up and down in the housing; the collimating lens bracket is internally provided with a step hole for bearing a collimating lens; the collimating lens is adhered to the collimating lens bracket through an adhesive.
6. The focusing method of the structured light laser light source according to claim 1, wherein the focusing movable bracket is located between the focusing knob and the collimating lens component, and is used for transmitting the extrusion force of the focusing knob to the collimating lens component so as to enable the collimating lens component to slide downwards; the focusing movable support comprises a table top and a transmission rod, wherein a through hole is formed in the table top and is used for facilitating the passage of the structured light assembly; the transmission rods are arranged at the bottom of the table top at intervals, the positions of the transmission rods correspond to the hollowed-out platforms on the shell, and the transmission rods penetrate through the hollowed-out platforms to contact with the collimating lens component; the upper end of the table top is contacted with the focusing knob; because the transmission rod passes through the hollow platform of the shell, the support of the shell to the structural light component is not affected when the focusing movable support moves up and down.
7. The focusing method of a structured light laser light source according to claim 1, wherein the structured light assembly comprises a structured light element holder and an optical element, the structured light element holder comprises a structured light element step hole and an optical path through hole, and the optical element is installed in the structured light element step hole; the inner diameter and the outer diameter of the light path through hole are smaller than those of the step hole of the structural light element, and the outer wall of the light path through hole is provided with threads for being in threaded connection with the through hole of the hollowed-out platform of the shell; the structure light element support further comprises a transverse notch and a limiting step, wherein the transverse notch is used for facilitating the rotation screwing of the structure light element support by using a straight screwdriver in the screwing process of the structure light element support into the shell; the limiting step is used for limiting the screwing-out degree of the focusing knob and avoiding complete screwing-out; the notch at the bottom of the outer wall thread of the light path through hole is a tool withdrawal groove, and the structural light element support can be screwed to the bottom, so that the bottom table surface of the structural light element support is tightly matched with the upper surface of the hollowed-out platform.
8. The focusing method of the structured light laser light source according to claim 1, wherein the focusing knob comprises a knob step hole and a knob through hole, the inner diameter of the knob step hole is larger than that of the knob through hole, the knob through hole is used for facilitating the passage of the structured light element support and the assembly with the shell, the knob step hole is matched with a limiting step of the structured light element support to play a limiting role, and the falling-off of the focusing knob due to excessive twisting is avoided; the outer wall of the knob step hole is provided with knob threads which are matched with the shell threads to adjust the depth, and the depth is transmitted to the collimating lens bracket through the focusing movable bracket, so that the focal length is adjusted; the focusing knob also comprises a knob ring and a knob washer groove, wherein the outer diameter of the knob ring is larger than that of the knob step hole, so that the focusing knob is convenient for hand twisting; the knob gasket groove is used for placing the rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210674689.0A CN115113360B (en) | 2022-06-15 | 2022-06-15 | Focusing device and focusing method for structured light laser light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210674689.0A CN115113360B (en) | 2022-06-15 | 2022-06-15 | Focusing device and focusing method for structured light laser light source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115113360A CN115113360A (en) | 2022-09-27 |
| CN115113360B true CN115113360B (en) | 2024-01-12 |
Family
ID=83328102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210674689.0A Active CN115113360B (en) | 2022-06-15 | 2022-06-15 | Focusing device and focusing method for structured light laser light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115113360B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100638891B1 (en) * | 2005-10-11 | 2006-10-27 | 삼성전기주식회사 | Knob for adjusting focus of lens |
| CN205962470U (en) * | 2016-02-02 | 2017-02-22 | 深圳市镭神智能系统有限公司 | Collimation focusing structure of laser device |
| CN210348031U (en) * | 2019-10-21 | 2020-04-17 | 广州市激度光科技有限公司 | Flashlight focusing device convenient for focusing and heat dissipation |
| CN210896155U (en) * | 2019-10-18 | 2020-06-30 | 南京浪博科教仪器有限公司 | Light speed measuring instrument transmitting objective lens base |
| CN211425346U (en) * | 2020-04-11 | 2020-09-04 | 镭凯光电(苏州)有限公司 | Light source module based on Bawell prism |
| CN111999903A (en) * | 2020-09-13 | 2020-11-27 | 常州沃翌智能科技有限公司 | Laser lighting device with annular light spot output distribution |
-
2022
- 2022-06-15 CN CN202210674689.0A patent/CN115113360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100638891B1 (en) * | 2005-10-11 | 2006-10-27 | 삼성전기주식회사 | Knob for adjusting focus of lens |
| CN205962470U (en) * | 2016-02-02 | 2017-02-22 | 深圳市镭神智能系统有限公司 | Collimation focusing structure of laser device |
| CN210896155U (en) * | 2019-10-18 | 2020-06-30 | 南京浪博科教仪器有限公司 | Light speed measuring instrument transmitting objective lens base |
| CN210348031U (en) * | 2019-10-21 | 2020-04-17 | 广州市激度光科技有限公司 | Flashlight focusing device convenient for focusing and heat dissipation |
| CN211425346U (en) * | 2020-04-11 | 2020-09-04 | 镭凯光电(苏州)有限公司 | Light source module based on Bawell prism |
| CN111999903A (en) * | 2020-09-13 | 2020-11-27 | 常州沃翌智能科技有限公司 | Laser lighting device with annular light spot output distribution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115113360A (en) | 2022-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080239707A1 (en) | Iluminating headlamp providing substantially uniform illumination | |
| CN110000468B (en) | Manual focusing optical fiber laser cutting head | |
| CN2800304Y (en) | Composite lighting system for mini size on-line high precision vision measure | |
| CN109358401B (en) | Optical lens frame | |
| KR20050016419A (en) | Stub having an optical fiber | |
| CN1955634A (en) | Displacement transducer | |
| CN114160963B (en) | Handheld laser welding head with adjustable light spots | |
| CN115113360B (en) | Focusing device and focusing method for structured light laser light source | |
| US3384965A (en) | Toolholder for engraving points | |
| CN217444817U (en) | Focusable structured light laser light source | |
| CN104570337A (en) | Scanning galvanometer system | |
| JP2539714Y2 (en) | Optical focusing device | |
| US20140211203A1 (en) | Testing device and testing lens member for testing camera module | |
| US20030147587A1 (en) | Instrument and method for aligning optical collimators | |
| CN210221096U (en) | Multifunctional laser module | |
| CN214153417U (en) | Laser line light source | |
| CN103878480B (en) | Light beam emergence position adjusting auxiliary device of laser processing head focusing lens | |
| SE520624C2 (en) | Device for optical connection of one optical fiber to another optical element | |
| CN217830645U (en) | Ultraviolet curing device installed on focal length instrument | |
| CN220019988U (en) | Telescope lens cone | |
| CN202093722U (en) | Multifunctional collimator tube used for photoelectric teaching | |
| CN217560920U (en) | Target plate capable of being replaced manually and focusing device | |
| CN213812138U (en) | Novel image measuring instrument | |
| CN220170073U (en) | Division image conversion zoom structure with parallax correction function | |
| CN217766921U (en) | Assembly for quickly adjusting position of collimating lens in colorimetry instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |