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Double beam coupling device

A dual-beam coupling and laser technology, applied in optics, optical components, laser welding equipment, etc., can solve the problems of high price and inability to obtain welding effects, improve production efficiency and quality, improve welding efficiency and welding quality, overcome difficult effect

Inactive Publication Date: 2012-06-20
SHENZHEN GDLASER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metals such as gold, silver, and copper are expensive, and using an achromatic combination lens to couple and focus the Nd:YAG laser and its frequency-doubled laser cannot obtain a better welding effect

Method used

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Embodiment Construction

[0014] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] figure 1 It is a simplified schematic diagram of a device for coupling and focusing two laser beams with different wavelengths according to an embodiment of the present invention. The coupling device includes: a collimation system 11, which collimates the Nd:YAG laser beam 1 into a nearly parallel laser beam; a first 45-degree reflector 12, which is used to reflect the Nd:YAG laser beam 1 with little loss, so that it can be transmitted The direction is changed by 90 degrees; the beam expander system 13 expands the frequency-doubled laser beam 2 of Nd:YAG into a beam with a certain divergence angle; the second 45-degree reflector 14 is used to pass the Nd:YAG laser beam 1 with little loss , and reflect the frequency-doubled laser beam 2 of Nd:YAG with small loss, so that the transmission direction of the frequency...

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PUM

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Abstract

The invention discloses a double beam coupling device, which includes a collimation system used for collimating Nd:YAG laser and enabling the collimated laser beam to form a beam of parallel light, a first 45-degree reflector used for reflecting and changing the transmission direction of the Nd:YAG laser, a beam expanding system used for expanding the Nd:YAG frequency-doubled laser and obtaining light beams with different divergence angles, a second 45-degree reflector used for changing the transmission direction of the Nd:YAG frequency-doubled laser through the Nd:YAG laser and reflection, and a focusing system used for coupling and focusing the Nd:YAG laser and the Nd:YAG frequency-doubled laser to one position. The device overcomes the difficulty in welding processing by adopting the single Nd:YAG laser, and greatly improves the welding efficiency and the welding quality.

Description

technical field [0001] The invention relates to a device for coupling and focusing two beams of laser beams with different wavelengths, in particular to a double-beam coupling device for welding with two laser beams of different wavelengths. Background technique [0002] In the past ten years, laser has been widely used in industrial production, especially for metal welding, cutting, drilling, marking and surface treatment. In production, laser welding technology is becoming more and more important, which is mainly due to the high precision, high processing rate, low thermal stress on the workpiece and the degree of automation that laser welding can achieve. Laser welding technology is gradually replacing traditional welding technology, especially in the production and processing of high value-added products, laser welding technology is unmatched by traditional welding technology. [0003] There are generally two types of laser light sources most widely used in current lase...

Claims

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Application Information

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IPC IPC(8): G02B27/10G02B27/09G02B1/10B23K26/04B23K26/06
Inventor 何林叶红叶毅聪
Owner SHENZHEN GDLASER TECH CO LTD
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