What is the wavelength of an ultraviolet laser marking machine?
The laser wavelength of an ultraviolet laser marking machine is typically 355 nanometers. This wavelength falls within the ultraviolet light spectrum, characterized by high energy density and a short wavelength, enabling high-precision marking and engraving effects.
Why 355 nanometers?
1. High-precision processing: The 355-nanometer ultraviolet laser wavelength is short, enabling it to focus on an extremely small spot size, thereby achieving high-precision marking and engraving. This makes ultraviolet laser marking machines excel in precision processing applications, such as in the electronics, semiconductor, and medical device industries, where extremely high precision is required.
2. Cold processing characteristics: The high-energy photons of ultraviolet lasers can directly break the molecular bonds on the surface of materials, achieving “cold processing,” meaning that almost no heat-affected zone is produced during the processing. This makes it particularly suitable for processing heat-sensitive materials such as plastics, glass, and ceramics.
3. Wide material applicability: The 355-nanometer ultraviolet laser has good absorption effects on a variety of materials, including both metals and non-metals. This enables UV laser marking machines to be applied across multiple industries, including electronics, semiconductors, medical devices, jewelry, and plastic products.
Application Areas
- Electronics Industry: Used to mark model numbers, specifications, production dates, and other information on electronic components.
- Medical Devices: Engraving trademarks, batch numbers, usage instructions, and other information on medical device surfaces.
- Food and Beverage Packaging: Marking production dates, expiration dates, batch numbers, and other information.
- Glass Products: Engraving patterns and text on glass surfaces.
In summary, the UV laser marking machine, with its 355-nanometer wavelength, achieves high precision, cold processing, and broad material compatibility, making it a vital tool in numerous fields.
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