A laser focusing system and a focusing method

Abstract

The application discloses a kind of laser focusing system and focusing method, wherein the laser focusing system includes transmitting end, baffle and bottom plate, the transmitting end and baffle are all arranged on bottom plate;The transmitting end is laser transmitter, the baffle is used to block the laser of transmitting end and form shaped spot.The transmitting end is installed on the bottom plate by transmitting support, the mounting groove for placing transmitting end is equipped on the transmitting support, the top pin hole passing through the groove wall is equipped on the mounting groove, the angle of transmitting end is adjusted by adjusting top pin to be screwed into top pin.The device adjusts the distance of light source from lens by confirming the size and position of good spot on baffle in fixed distance to finally confirm the position of focal point.The detection accuracy and repeatability problem of product itself is solved, the performance is more excellent, the service life of product is improved.The consumables of product are reduced, the output rate is improved, the maintenance cost is reduced, work is efficient, convenient and better consistent.

Description

Technical Field

[0001] This invention relates to the field of optical focusing technology, and in particular to a laser focusing system and a focusing method for the system. Background Technology

[0002] Existing laser focusing systems can achieve the expected design results when assembled. For example, a laser optical path dual-focus adjustment device and method disclosed in 202111027974.5 can quickly and efficiently adjust the focus of the laser optical path through the cooperation of the main optical path, beam splitter, focusing optical path, beam combiner, first reflector, second reflector, optical shutter, focusing device, third reflector and light outlet.

[0003] However, the applicant believes that the existing laser focusing method has the following shortcomings in practical applications: 1. The position where the two optical paths intersect on the same plane is not the focal point, resulting in low product detection accuracy. 2. The distance between the focal points of the two axes deviates in the Z-axis direction, causing a slight time difference when the probe passes through the detection position. 3. The repeatability of the product at the detection position point is insufficient. 4. The cross-assembly of the two optical systems results in a high defect rate, increased costs, and wasted resources. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention aims to provide a laser focusing system and focusing method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A laser focusing system includes a transmitter, a baffle, and a base plate, wherein the transmitter and the baffle are both disposed on the base plate; the transmitter is a laser emitter, and the baffle is used to block the laser from the transmitter and form a shaped light spot;

[0007] The transmitter is mounted on a base plate via a transmitter bracket. The transmitter bracket has a mounting groove for placing the transmitter, and the mounting groove has a set screw hole that penetrates the groove wall. The laser emission angle of the transmitter is adjusted by adjusting the length of the set screw screw into the set screw hole. After the set screw screw is screwed into the mounting groove, it is equivalent to applying an external force to the transmitter to change its angle within the mounting groove.

[0008] Furthermore, the bracket is provided with at least two set screw holes, and the set screw holes are spaced at the same angle. The two set screws can cooperate with each other to apply force from both sides, so that the transmitting end can maintain an angle of stability.

[0009] Furthermore, the bracket is provided with three set screw holes, which are spaced 120° apart. The three set screws can be on the same plane, and this plane is parallel to the lens, further enhancing the stability of the angle.

[0010] Furthermore, the transmitting end includes a transmitting lens tube, inside which are provided a lens and a light source. The lens is at the front end of the transmitting lens tube, and the light source is at the rear end of the transmitting lens tube.

[0011] Furthermore, the launch bracket and the baffle are both connected to the base plate by bolts, and the launch bracket, the baffle, and the base plate are detachable, which facilitates disassembly and assembly and saves space.

[0012] And a focusing method for a laser focusing system, including the aforementioned laser focusing system, comprising the following steps:

[0013] S1. After adjusting the focus position of the transmitter for the first time, install the transmitter onto the transmitter bracket; turn on the transmitter to form a light spot Y1 on the baffle;

[0014] S2. Record the straight-line distance X1 between the transmitter and the baffle, and record the position and size of the light spot Y1;

[0015] S3. Adjust the linear distance X2 between the light source and the lens so that the laser spot Y2 formed on the baffle is the same size as the spot Y1; adjust the set screw on the emission bracket so that the positions of spot Y2 and spot Y1 are the same;

[0016] S4. Fix the light source inside the transmitting lens tube and fix the transmitting lens tube on the transmitting bracket.

[0017] Furthermore, in step S4, the straight-line distance between the light source and the lens is always maintained at X2.

[0018] Furthermore, the light source and the emitting lens barrel are connected by a threaded connection. The internal and external threaded connection effectively prevents the distance between the light source and the lens from changing due to accidental contact during fixing, thus ensuring the accuracy of focusing.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This device, within a fixed distance, adjusts the distance between the light source and the lens by determining the size and position of the light spot on the baffle, ultimately confirming the focal point. The issues of detection accuracy and repeatability are resolved, resulting in superior performance and extended product lifespan. Reduced consumables increase output, lower maintenance costs, and enhanced market competitiveness. The optical system's focusing and installation are more convenient, leading to more efficient, convenient, and consistent operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention.

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the transmitter in Embodiment 1 of the present invention.

[0024] Figure 3 This is a schematic diagram of the launch bracket of Embodiment 1 of the present invention.

[0025] Figure 4 This is a schematic diagram of the system in Embodiment 2 of the present invention.

[0026] In the figure, the attached figures are labeled as follows:

[0027] 1-Baffle; 2-Base plate; 3-Shaped light spot; 4-Emitting end; 5-Emitting bracket; 6-Light source; 7-Emitting lens tube; 8-Lens; 9-Top screw hole. Detailed Implementation

[0028] To more clearly illustrate the present invention, the invention will be further described in detail below with reference to embodiments and accompanying drawings. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] Example 1:

[0031] like Figure 1-3The laser focusing system shown includes an emitter 4, a baffle 1, and a base plate 2, with both the emitter 4 and the baffle 1 mounted on the base plate 2. The emitter 4 is a laser emitter, and the baffle 1 is used to block the laser emitted from the emitter 4 and form a shaped light spot 3. The emitter 4 includes an emitting lens tube 7, inside which are disposed a lens 8 and a light source 6. The lens 8 is located at the front end of the emitting lens tube 7, and the light source 6 is located at the rear end of the emitting lens tube 7.

[0032] The transmitter 4 is mounted on the base plate 2 via a transmitter bracket 5. Both the transmitter bracket 5 and the baffle are bolted to the base plate 2. The transmitter bracket 5, baffle 1, and base plate 2 are detachable for easy assembly and disassembly, saving space. The transmitter bracket 5 has a mounting groove for placing the transmitter 4. The mounting groove has a set screw hole 9 that penetrates the groove wall. The laser emission angle of the transmitter 4 is adjusted by adjusting the length of the set screw screw inserted into the set screw hole 9. After the set screw is screwed into the mounting groove, it is equivalent to applying an external force to the transmitter 4, thereby changing its angle within the mounting groove.

[0033] The transmitter bracket 5 has at least two set screw holes 9. The two set screws can cooperate with each other to apply force from both sides, so that the transmitter end 4 can maintain a stable angle. In this embodiment, the transmitter bracket 5 has three set screw holes 9, and the angle between the set screw holes 9 is 120°. When the number of set screw holes 9 is not less than three, they can be arranged on the same plane, and this plane is parallel to the lens 8, further enhancing the stability of the angle of the transmitter end 4.

[0034] Example 2:

[0035] like Figure 4 The laser focusing system illustrated here includes a laser focusing system as shown in Example 1, and the specific steps are as follows:

[0036] S1. After adjusting the focus position of the transmitter 4 for the first time, install the transmitter 4 onto the transmitter bracket 5; turn on the transmitter 4 so that it forms a light spot Y1 on the baffle 1.

[0037] S2. Record the straight-line distance X1 between the transmitter 4 and the baffle 1, and record the position and size of the light spot Y1.

[0038] S3. Adjust the linear distance X2 between the light source 6 and the lens 8 so that the laser spot Y2 formed on the baffle 1 is the same size as the laser spot Y1; adjust the set screw on the emission bracket 5 so that the position of the laser spot Y2 is the same as that of the laser spot Y1.

[0039] S4. Fix the light source 6 inside the emitting lens tube 7, and fix the emitting lens tube 7 on the emitting bracket 5; the straight-line distance between the light source 6 and the lens 8 is always kept at X2. The light source 6 and the emitting lens tube 7 are connected by a threaded connection. The internal and external threaded connection effectively prevents the distance between the light source 6 and the lens 8 from changing due to accidental contact during fixing, effectively ensuring the focusing accuracy.

[0040] This device, within a fixed distance, adjusts the distance between the light source 6 and the lens 8 by determining the size and position of the light spot on the baffle 1, ultimately confirming the focal point. The issues of detection accuracy and repeatability are resolved, resulting in superior performance and extended product lifespan. Reduced consumables increase output, lower maintenance costs, and enhanced market competitiveness. The optical system's focusing and installation are more convenient, leading to more efficient, convenient, and consistent operation.

[0041] Obviously, the above embodiments of the present invention are merely examples to illustrate the present invention more clearly, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all implementation methods here. Any obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A laser focusing system, characterized in that, It includes a transmitter (4), a baffle (1) and a base plate (2), wherein the transmitter (4) and the baffle (1) are both disposed on the base plate (2); the transmitter (4) is a laser emitter, and the baffle (1) is used to block the laser from the transmitter (4) and form a shaped light spot (3); The transmitter (4) is mounted on the base plate (2) via a transmitter bracket (5). The transmitter bracket (5) has a mounting groove for placing the transmitter (4). The mounting groove has a top screw hole (9) that penetrates the groove wall. The angle of the transmitter (4) can be adjusted by adjusting the length of the top screw screw screwed into the top screw hole (9).

2. The laser focusing system according to claim 1, characterized in that, The bracket (11) is provided with at least two set screw holes (9), and the set screw holes (9) are spaced at the same angle.

3. The laser focusing system according to claim 2, characterized in that, The bracket (11) is provided with three set screw holes (9), and the set screw holes (9) are spaced at an angle of 120°.

4. The laser focusing system according to claim 1, characterized in that, The transmitting end (4) includes a transmitting lens tube (7), inside which are provided a lens (8) and a light source (6). The lens (8) is at the front end of the transmitting lens tube (7), and the light source (6) is at the rear end of the transmitting lens tube (7).

5. A laser focusing system according to claim 1, characterized in that, The launch bracket (5) and the baffle (1) are both connected to the base plate (2) by bolts.

6. A focusing method for a laser focusing system, characterized in that, The laser focusing system according to claim 4 includes the following steps: S1. After adjusting the focal position of the transmitter (4) for the first time, install the transmitter (4) on the transmitter bracket (5); turn on the transmitter (4) so ​​that it forms a light spot Y1 on the baffle (1); S2. Record the straight-line distance X1 between the transmitter (4) and the baffle (1), and record the position and size of the light spot Y1; S3. Adjust the linear distance X2 between the light source (6) and the lens (8) so that the laser spot Y2 formed on the baffle (1) is the same size as the laser spot Y1; adjust the set screw on the emission bracket (5) so that the position of the laser spot Y2 is the same as that of the laser spot Y1; S4. Fix the light source (6) inside the emitting lens tube (7) and fix the emitting lens tube (7) on the emitting bracket (5).

7. The focusing method of a laser focusing system according to claim 6, characterized in that, In step S4, the straight-line distance between the light source (6) and the lens (8) is always kept at X2.

8. A laser focusing system according to claim 6, characterized in that, The light source (6) and the emitting lens tube (7) are connected by a threaded connection.

Images