Collimating light path system of red light laser

Abstract

The utility model provides a red light laser collimation light path system, which comprises a far-field light spot camera, a far-field manual crossed roller sliding table, a near-field light spot camera, a near-field manual crossed roller sliding table, a spectroscope, a rhombic prism, a laser mounting plate and a laser main body, all the parts can move up, down, left and right; the laser main body is placed on the laser mounting plate, and the rhombic prism is located above the laser main body; lenses of the far-field light spot camera and the near-field light spot camera are vertically arranged and are consistent with the spectroscope in height, the lens of the near-field light spot camera is adjacent to the spectroscope, and the lens of the far-field light spot camera is relatively far away from the spectroscope; the rhombic prism is arranged on a light path where the near-field light spot camera and the spectroscope are connected, and the set height of the rhombic prism enables light guided out of the rhombic prism to enter the near-field light spot camera and the far-field light spot camera through the spectroscope. The optical path system can improve the chip collimation efficiency and reduce the time cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of chip alignment, and in particular relates to a red laser alignment optical path system. Background Art

[0002] Currently, the need for laser testing and calibration is becoming increasingly prominent, especially for optical path shaping and alignment, which directly impacts the output power, spot shape, and saturation. In less automated manufacturers, manual placement is often performed with auxiliary equipment. This manual alignment method has certain drawbacks: low efficiency, unstable output power within each alignment pass, and poor spot consistency. Therefore, a device that can automatically grasp and align the optical path is needed to address this consistency issue and ultimately ensure product quality. Utility Model Content

[0003] Purpose of the utility model: In order to overcome the defects of low efficiency, high time cost, and front-to-back position difference of FAC in the tube shell in the prior art during chip alignment, the utility model provides a red laser collimation optical path system, which is calibrated by light spot reading and is particularly suitable for 30W red lasers.

[0004] Technical solution: To achieve the above purpose, the present invention adopts the following technical solution:

[0005] A 30W red laser collimation optical path system includes a far-field spot camera, a far-field manual cross-roller slide, a near-field spot camera, a near-field manual cross-roller slide, a beam splitter, a rhombus prism, a laser mounting plate and a laser body, wherein the far-field spot camera is mounted on the far-field manual cross-roller slide and can move up, down, left and right; the near-field spot camera is mounted on the near-field manual cross-roller slide and can also move up, down, left and right; the laser body is placed on the laser mounting plate, and the rhombus prism is located above the laser body; the lenses of the far-field spot camera and the near-field spot camera are arranged vertically and are both consistent with the height of the beam splitter, the lens of the near-field spot camera is adjacent to the beam splitter, and the lens of the far-field spot camera is relatively far away from the beam splitter; the rhombus prism is arranged on the optical path connecting the near-field spot camera and the beam splitter, and its arrangement height enables the light it exports to enter the near-field spot camera and the far-field spot camera through the beam splitter.

[0006] As a specific implementation scheme, the far-field spot camera is mounted on a far-field manual cross roller slide via a far-field camera mounting plate.

[0007] As a specific implementation scheme, the near-field spot camera is installed on a near-field manual cross-roller slide through a camera adapter, and the manual cross-roller slide is installed on a lifting seat.

[0008] As a specific implementation scheme, the laser mounting plate is provided with a limiting plate for fixing the laser body.

[0009] As a specific implementation scheme, a mounting seat is provided at the bottom of the laser mounting plate.

[0010] As a specific implementation scheme, the laser mounting plate is an aluminum alloy base plate.

[0011] Beneficial effect: Compared with the existing technology, when the optical path of the utility model is used, the chip output light can be directly introduced into the spot camera, which can improve the chip alignment efficiency, reduce time cost, and solve the defect of the front and back position difference of the COS chip in the tube shell. It is especially suitable for 30W red light lasers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the collimated optical path system of a 30W red laser in this utility model.

[0013] Figure 2 This is a structural diagram of the laser mounting plate of the utility model.

[0014] Figure 3 This is a schematic diagram of the collimation of the light output path of the laser of this utility model. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0018] Example

[0019] A 30W red laser collimation optical path system, such as Figure 1 and Figure 2 As shown, it includes a far-field spot camera 1, a far-field manual cross roller slide 2, a near-field spot camera 3, a near-field manual cross roller slide 4, a beam splitter 5, a rhombus 6, a laser mounting plate 7, a laser body 8, a lifting seat 9 and a mounting seat 10;

[0020] The far-field spot camera 1 is horizontally mounted on a far-field manual cross roller slide 2 via a far-field camera mounting plate 11 (which also serves as an elevation mechanism), allowing for vertical and horizontal movement. The manual cross roller slide 2 allows for fine-tuning in the X, Y, and Z dimensions.

[0021] The near-field spot camera 3 is mounted on the near-field manual cross-roller slide 4 via a camera adapter 31, allowing for vertical and horizontal movement. The mounting surface of the adapter 31 is relatively horizontal, and the near-field spot camera 3 is set horizontally. The manual cross-roller slide 4 is mounted on a lifting base 9 and can be fine-tuned in three dimensions (X, Y, and Z) by tightening screws.

[0022] A limit plate 71 is provided on the laser mounting plate 7, and the laser body 8 is fixed on the laser mounting plate 7 through the limit plate 71. The rhombus prism 6 is located above the laser body 8. An aluminum alloy mounting seat 10 is provided at the bottom of the laser mounting plate 7 (the two are connected by screws).

[0023] The lenses of the far-field spot camera 1 and the near-field spot camera 3 are arranged vertically (both are relatively horizontal with the laser body 8), and are both consistent in height with the beam splitter 5. The lens of the near-field spot camera 3 is adjacent to the beam splitter 5 (that is, the beam splitter 5 is placed directly in front of the near-field spot camera 3), and the lens of the far-field spot camera 1 is relatively far away from the beam splitter 5; the rhombus prism 6 is arranged on the optical path connecting the near-field spot camera 3 and the beam splitter 5, and its setting height enables the light it exports to enter the near-field spot camera 3 and the far-field spot camera 1 through the beam splitter 5.

[0024] Both the far-field manual cross-roller stage 2 and the near-field manual cross-roller stage 4 can be conventional cross-roller stages available in the prior art. These high-precision manual stages enable precise adjustment of the camera position by rotating the micrometer head. The beam splitter 5 and rhombus prism 6 can be mounted on a conventional light guide arm, which can be sunk into the laser cavity.

[0025] The working process and principle of the above 30W red laser collimation optical path system are as follows:

[0026] After the laser body 8 is powered on, it emits light. The camera position is fine-tuned through the far-field manual cross roller slide 2 and the near-field manual cross roller slide 4 to center the light path. The light passes through the rhombus prism 6 and the beam splitter 5 and enters the near-field spot camera 3 and the far-field spot camera 1 respectively. The effect of the laser collimation is judged by identifying the shape, position, size and saturation of the light spot presented in the camera.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A red laser collimation optical path system, characterized in that: The invention comprises a far-field spot camera (1), a far-field manual cross roller slide (2), a near-field spot camera (3), a near-field manual cross roller slide (4), a beam splitter (5), a rhombus prism (6), a laser mounting plate (7) and a laser body (8), wherein the far-field spot camera (1) is mounted on the far-field manual cross roller slide (2) and can be moved up, down, left and right; the near-field spot camera (3) is mounted on the near-field manual cross roller slide (4) and can also be moved up, down, left and right; the laser body (8) is placed on the laser mounting plate (7) The rhombus prism (6) is located above the laser body (8); the lenses of the far-field spot camera (1) and the near-field spot camera (3) are vertically arranged and both are kept in the same height as the beam splitter (5); the lens of the near-field spot camera (3) is adjacent to the beam splitter (5), and the lens of the far-field spot camera (1) is relatively far away from the beam splitter (5); the rhombus prism (6) is arranged on the optical path connecting the near-field spot camera (3) and the beam splitter (5), and the arrangement height thereof can enable the light derived from the rhombus prism to enter the near-field spot camera (3) and the far-field spot camera (1) via the beam splitter (5).

2. The red laser collimation optical path system according to claim 1, characterized in that: The far-field spot camera (1) is mounted on a far-field manual cross roller slide (2) via a far-field camera mounting plate (11).

3. The red laser collimation optical path system according to claim 1, characterized in that: The near-field spot camera (3) is mounted on a near-field manual cross roller slide (4) via a camera adapter (31), and the manual cross roller slide (4) is mounted on a lifting seat (9).

4. The red laser collimation optical path system according to claim 1, characterized in that: The laser mounting plate (7) is provided with a limiting plate (71) for fixing the laser body (8).

5. The red laser collimation optical path system according to claim 1, characterized in that: A mounting seat (10) is provided at the bottom of the laser mounting plate (7).

6. The red laser collimation optical path system according to claim 1, characterized in that: The laser mounting plate (7) is an aluminum alloy base plate.

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