A kind of sealed carbon dioxide laser front mirror, tail mirror lens mounting adjusting device

Abstract

A sealed-off carbon dioxide laser front and rear mirror lens mounting and adjustment device is characterized in that the front and rear mirrors are respectively mounted on flexible micro-deformation connectors, which are respectively mounted on the interfaces of the front or rear mirrors of a hard quartz glass tube. The two ends of the flexible micro-deformation connectors are: one is a lens mounting surface, and the other is a fixing surface to the hard quartz glass tube. The mounting surface and the fixing surface are connected by a thin wall, forming a cavity inside. The outer side of the thin wall forms a gap between the mounting surface and the fixing surface, and an adjustment screw connecting the mounting surface and the fixing surface is provided at the outer end of the gap. This invention uses an adjustment screw to flexibly adjust the lens angle. The micro-deformation of the thin wall on the flexible micro-deformation connector adapts to this adjustment, ensuring sealing while facilitating adjustment. It has significant advantages and convenience, effectively reducing adjustment difficulty and improving process quality.

Description

(I) Technical Field:

[0001] This utility model relates to the field of sealed carbon dioxide laser technology, specifically a novel front and rear mirror mounting and adjustment device for a sealed carbon dioxide laser. It is used at the front and rear ends of the laser discharge tube and is a key component for forming a stable optical resonant cavity and realizing laser oscillation, amplification, and directional output. (II) Background Technology:

[0002] Sealed-out carbon dioxide lasers are high-power, continuous-output laser devices widely used in industrial production and materials processing. In actual production processes, the laser mode has a decisive impact on the processing effect. The collimation of the discharge tube, i.e., the laser's resonant cavity, and its perpendicularity to the front and rear mirrors are crucial factors determining the final laser output. Ensuring that the front and rear mirrors are perpendicular to the central optical axis of the discharge tube is a critical performance indicator in the design and manufacturing of sealed-out carbon dioxide lasers.

[0003] The shell and discharge tube of a sealed-type carbon dioxide laser are made of quartz glass. The installation and bonding of its front and rear mirrors are done manually, requiring the use of grinding wheels and other tools to finely grind and polish the areas where the mirrors will be installed, creating a flat surface that perfectly fits the lens base before the mirrors are bonded. During this process, due to issues with glass tube processing and grinding techniques, it is difficult to create a smooth, flat, and precise mounting surface. Operators must continuously grind and experiment, repeatedly adjusting the position and angle of the mirrors, which is time-consuming and demands a high level of skill. Furthermore, during the lens bonding process, any minor adjustment can create gaps between the mounting surface and the mirror, making it difficult to form a sealed optical resonant cavity. Therefore, these difficulties in the production process significantly increase the production cycle and cost of sealed-type carbon dioxide lasers, severely impacting the application and promotion of domestically produced high-power sealed-type carbon dioxide lasers.

[0004] Commonly used sealed-off carbon dioxide laser structures include: Figure 1 As shown, it is mainly composed of a front mirror 1, a tail mirror 2, and a hard quartz glass tube 3. The discharge tube 4 in the hard quartz glass tube 3, together with the front mirror 1 and the tail mirror 2, forms a concentric, coaxial, and highly sealed optical cavity, which is also known as an optical resonant cavity. During operation, it is filled with a carbon dioxide mixture and operates under the excitation of a high-voltage power supply, emitting laser light. (III) Utility Model Content:

[0005] The purpose of this invention is to provide a novel mounting and adjustment device for the front and rear mirrors of a sealed carbon dioxide laser. This device addresses the shortcomings of existing technologies, improves the processing and adjustment of the front and rear mirrors, reduces the processing difficulty in laser production, and thus enhances the technological level and product performance of the sealed carbon dioxide laser.

[0006] The technical solution of this utility model is as follows: a sealed carbon dioxide laser front mirror and tail mirror lens mounting and adjustment device, characterized in that the front mirror and tail mirror are respectively mounted on a flexible micro-deformation connector, and the flexible micro-deformation connector is respectively mounted on the interface of the front mirror or tail mirror of a hard quartz glass tube.

[0007] The flexible micro-deformation connector has two ends: one is the mounting surface of the lens, and the other is the fixing surface of the hard quartz glass tube. The mounting surface and the fixing surface are connected by a thin wall, forming a cavity inside. The outer side of the thin wall is the gap between the mounting surface and the fixing surface, and an adjusting screw connecting the mounting surface and the fixing surface is provided at the outer end of the gap.

[0008] The lens is either a front lens or a rear lens.

[0009] The thickness of the thin wall is 0.5 to 1.0 mm.

[0010] The adjusting screws are evenly distributed on the mounting surface and the fixing surface.

[0011] The adjusting screws are three screws evenly distributed at 120° intervals.

[0012] The adjusting screw is fixed in position by a set screw.

[0013] The flexible micro-deformation connector is made of stainless steel, copper or other metals.

[0014] The mounting surface of the flexible micro-deformation connector is sealed and bonded to the lens.

[0015] The fixing surface of the flexible micro-deformation connector is sealed and bonded to the hard quartz glass tube with adhesive; or, it is fixed by mechanical means with rubber rings.

[0016] The fixing surface of the connector is connected to a metal mounting ring pre-sintered on a hard quartz glass tube; or a mounting ring is pre-placed at the front mirror or rear mirror, and the mounting ring is connected and fixed to the fixing surface of the connector by screws, with a groove in the middle to embed a rubber sealing ring, and a seal is formed after the screws are tightened.

[0017] The working method of this utility model is as follows: 1. Fix the hard quartz glass tube on the base, and adjust its position and angle to ensure the stability and horizontal structure of the hard quartz glass tube.

[0018] 2. Install flexible micro-deformation connectors at the positions where the front mirror and the tail mirror are installed at both ends of the hard quartz glass tube prepared in step 1. Install the front mirror and the tail mirror on the flexible micro-deformation connectors respectively.

[0019] 3. Fix the front or rear mirror to the mounting surface of the flexible micro-deformation connector by adjusting the screws and set screws. With the assistance of an optical telescope, adjust the evenly spaced adjusting screws on the flexible micro-deformation connector to fine-tune the angle between the front and rear mirrors and the optical axis of the discharge tube, so that the optical axes of the front and rear mirrors and the discharge tube are perpendicular, thus completing the final optical path adjustment.

[0020] The advantages of this utility model are:

[0021] 1. To address the technical challenges of installing and adjusting the front and rear mirrors of a carbon dioxide laser, a mechanical, flexible, and highly sealed front and rear mirror adjustment connector is proposed. This connector allows for flexible adjustment of the mirror installation angle using adjusting screws, ensuring it is perpendicular to the optical axis of the discharge tube. This effectively improves the manufacturing process and reduces adjustment difficulty. During installation, there are no strict requirements regarding angle and position; simply polish the contact surface of the quartz glass until smooth and flat, then firmly bond and seal it. The process is easy to implement. When adjusting the mirror angle, the angle of the front or rear mirror is fine-tuned using adjusting screws. Adjusting the evenly spaced adjusting screws on the fixing ring allows for convenient and flexible fine-tuning of the mirror's angle relative to the discharge tube's optical axis until it is perpendicular. Once perpendicular, it is secured using set screws.

[0022] 2. The lens angle is flexibly adjusted by using adjusting screws. The micro-deformation of the thin wall on the flexible micro-deformation connector adapts to this adjustment, ensuring a seal while facilitating adjustment. This has great advantages and convenience, effectively reducing the difficulty of adjustment and improving the process level. Practice shows that the efficiency of this process is 1 to 2 times that of the traditional structure. (iv) Description of the attached drawings:

[0023] Figure 1 Schematic diagram of a sealed-off carbon dioxide laser.

[0024] Figure 2-1 : Structural diagram of the flexible micro-deformation connector for the front and rear mirrors; Figure 2-2 : Schematic diagram of the connection between the adjusting screw and the set screw; Figure 2-3 : Figure 2-1 The right view. (V) Specific Implementation Methods:

[0025] Example: Figure 2-1 , Figure 2-2 , Figure 2-3As shown, a sealed carbon dioxide laser front and rear mirror lens mounting and adjustment device is characterized in that the front mirror 1 and the rear mirror 2 are respectively mounted on a flexible micro-deformation connector 5, and the flexible micro-deformation connector 5 is respectively mounted on the interface 10 of the front mirror 1 or the rear mirror 2 of the hard quartz glass tube 3.

[0026] The flexible micro-deformation connector 5 has two ends: one is the mounting surface of the lens 9, and the other is the fixing surface of the hard quartz glass tube 3. The mounting surface and the fixing surface are connected by a thin wall 8, forming a cavity inside. The outer side of the thin wall is the gap between the mounting surface and the fixing surface. An adjusting screw 6 connecting the mounting surface and the fixing surface is provided at the outer end of the gap.

[0027] The lens 9 is either the front lens 1 or the rear lens 2.

[0028] The thickness of the thin wall 8 is 0.7 mm.

[0029] The adjusting screws 6 are three screws evenly distributed at 120° intervals.

[0030] The adjusting screw 6 is fixed in position by the set screw 7.

[0031] The flexible micro-deformation connector 5 is made of stainless steel, copper or other metals.

[0032] The mounting surface of the flexible micro-deformation connector 5 is sealed and bonded to the lens 9.

[0033] The fixing surface of the flexible micro-deformation connector 5 is sealed and bonded to the hard quartz glass tube 3 by an adhesive.

[0034] The working method of this embodiment is as follows: 1. Fix the hard quartz glass tube 3 on the base, and adjust its position and angle to ensure the stability and horizontal structure of the hard quartz glass tube 3.

[0035] 2. Install flexible micro-deformation connectors 5 at the positions where the front mirror 1 and the tail mirror 2 are installed at both ends of the hard quartz glass tube 3 prepared in step 1. The front mirror 1 and the tail mirror 2 are installed on the flexible micro-deformation connectors 5 respectively.

[0036] 3. Fix the front mirror 1 or the tail mirror 2 to the mounting surface of the flexible micro-deformation connector by adjusting the screws 6 and the set screws 7. With the assistance of the optical telescope, adjust the evenly spaced adjusting screws 6 on the flexible micro-deformation connector 5 to finely adjust the angle between the front mirror, the tail mirror and the optical axis of the discharge tube 4, so that the optical axes of the front mirror, the tail mirror and the discharge tube are perpendicular, and the final optical path adjustment is completed.

Claims

1. A sealed-off carbon dioxide laser front and rear mirror lens mounting and adjustment device, characterized in that... The front mirror and the rear mirror are respectively mounted on the flexible micro-deformation connector, which is respectively mounted on the interface of the front mirror or the rear mirror of the hard quartz glass tube.

2. The sealing-type carbon dioxide laser front and rear mirror mounting and adjustment device according to claim 1, characterized in that... The flexible micro-deformation connector has two ends: one is the mounting surface of the lens, and the other is the fixing surface of the hard quartz glass tube. The mounting surface and the fixing surface are connected by a thin wall, forming a cavity inside. The outer side of the thin wall is the gap between the mounting surface and the fixing surface, and an adjusting screw connecting the mounting surface and the fixing surface is provided at the outer end of the gap.

3. The sealing-type carbon dioxide laser front and rear mirror mounting and adjustment device according to claim 2, characterized in that... The lens is either a front lens or a rear lens.

4. The sealing-type carbon dioxide laser front and rear mirror lens mounting and adjustment device according to claim 2, characterized in that... The thickness of the thin wall is 0.5 to 1.0 mm.

5. The sealing-type carbon dioxide laser front and rear mirror mounting and adjustment device according to claim 2, characterized in that... The adjusting screws are evenly distributed on the mounting surface and the fixing surface.

6. The sealing-type carbon dioxide laser front and rear mirror mounting and adjustment device according to claim 2, characterized in that... The adjusting screws are three screws evenly distributed at 120° intervals.

7. The sealing-type carbon dioxide laser front and rear mirror mounting and adjustment device according to claim 2, characterized in that... The adjusting screw is fixed in position by a set screw.

8. The sealing-type carbon dioxide laser front and rear mirror mounting and adjustment device according to claim 1 or 2, characterized in that... The flexible micro-deformation connector is made of stainless steel or copper.

9. The sealing-type carbon dioxide laser front and rear mirror mounting and adjustment device according to claim 2, characterized in that... The mounting surface of the flexible micro-deformation connector is sealed and bonded to the lens.

10. The sealing-type carbon dioxide laser front and rear mirror mounting and adjustment device according to claim 2, characterized in that... The fixing surface of the flexible micro-deformation connector is sealed and bonded to the hard quartz glass tube with adhesive; or, it is fixed by mechanical means with rubber rings.

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