High Quality Protective Lenses from China's Leading Suppliers and Factory for Optimal Safety and Performance
Laser Protective Lens Description
Laser cutting protective lens play a crucial role in laser cutting machines.
The protective lens are mainly responsible for blocking and preventing high-temperature splashes, dust and slag produced during the cutting process from directly contacting and damaging the focusing lenses and other internal precision optical components. Protective lens are usually located at the front end of the laser head and are one of the vulnerable parts in laser cutting machines. Due to their harsh working environment, laser protective lens are prone to failure due to contamination, damage or aging. Therefore, the protective lens need to be cleaned or replaced regularly to ensure the normal operation and processing quality of the laser cutting machine.
Lens Material Classification & Specifications
Based on the power of the laser cutting machine and the usage environment, select the appropriate protective lenses for the base material, such as K9 glass, quartz or zinc arsenide, etc. The protective lenses made of different materials have differences in light transmittance, temperature resistance and mechanical strength, and the choice should be made according to the actual requirements.
| Material | Transmittance Advantage Band | Temperature Resistance Limit | Mechanical Strength | Applicable Scenarios |
|---|---|---|---|---|
| K9 Glass | Visible Light (>92%) | ≤300℃ | Hardness Medium-Low | Low-power marking/engraving machines |
| Quartz Glass | Ultraviolet Deep Ultraviolet (>93%) | 1100℃ | High Hardness | Excimer Laser/Precision Microprocessing |
| Zinc Selenide (ZnSe) | CO₂ Laser (10.6μm > 70%) | ≤100℃ | Extremely Soft (Requires Coating) | Non-metallic Thick Plate Cutting |
Frequently Asked Questions
The laser protective lens is mainly responsible for blocking and preventing high-temperature splashes, dust, and slag produced during cutting from directly contacting and damaging the focusing lens and internal precision optical components.
It is usually located at the front end of the laser head and acts as a barrier, making it one of the key vulnerable parts that require regular maintenance.
Due to their harsh working environment, protective lenses are prone to failure from contamination, damage, or aging. Regular cleaning or replacement is necessary to ensure normal operation and processing quality.
You should select the lens material based on the laser power, usage environment, light transmittance, temperature resistance, and mechanical strength requirements.
K9 Glass is suitable for low-power marking and engraving with temperature resistance up to 300℃. Quartz Glass offers higher hardness, ultraviolet transmittance, and temperature resistance up to 1100℃, making it ideal for precision microprocessing.
Zinc Selenide (ZnSe) is suitable for CO₂ lasers (10.6μm) and non-metallic thick plate cutting. Due to its soft nature, it requires a protective coating to prevent damage.
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