1Mainly used in laser processing and is an indispensable accessory for laser engraving machines, laser marking machines, and laser cutting machines 2The substrate of the silicon reflective lens is silicon, come with good optical and thermal properties 3After the reflective film is coated on the surface of the silicon, its reflectivity can be greatly improved, about 99%, almost avoid the loss of light caused by reflection 4Good optical thermal properties, high reflectivity, goldplated film with scratch resistance 5Laser engraving machine parts can be used to work in harsh environments with long service life Item Type: Laser Lens Set Laser Reflective Mirror:Material: Silicon Coating Band: 10.6m Diameter Tolerance: +0/-0.1mm Thickness Tolerance: 0.1mm Surface Type: /2per1in Dia Surface Quality: 40-20 Diameter: Approx. 20mm / 0.8in Thickness: Approx. 3mm / 0.1in Applicable Power: 60W-300W (high power) Scope of Application:Laserreflective lens is widely used in laser processing and is an indispensable accessory for laser engraving machine, laser marking machine and laser cutting machine 3 x Reflective Mirror 1. Install in the laser head with the concave surface facing down and the convex surface facing up.2. Depending on the specific usage, wipe 1 or 2 times a : use a cotton swab or lens cleaning paper, gently rotate the wipe from the inside to the outside, and then process after evaporates.3. The laser hits the edge of the lens and the junction of the lens barrel, which is easy to crack.