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Laser Protective Lens Description
Laser protective lens:
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.
Material Selection
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
What is the primary function of a laser protective lens?
The primary function of a laser protective lens is to block and prevent 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.
Where is the protective lens located in a laser cutting machine?
It is typically located at the front end of the laser head and acts as a sacrificial vulnerable component to protect the more expensive internal optics.
Why do laser protective lenses fail?
Due to their harsh working environment, they are prone to contamination from cutting slag and dust, physical damage, or general aging over time.
How do I choose the right lens material?
You should select the base material (such as K9 glass, quartz, or zinc selenide) based on the power of your laser cutting machine, the operating wavelength, and your specific usage environment.
What are the differences in temperature resistance among the materials?
Quartz glass has the highest temperature resistance limit of up to 1100℃. K9 glass supports temperatures up to 300℃, while Zinc Selenide (ZnSe) is limited to ≤100℃.
What to know about this product?
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