CO2 Laser Focusing Lens SPT15.26-1.5-1.8
Sptlaser laser focusing lenses use CVD zinc selenide imported from the United States. Its low material absorption allows the lenses to withstand high power densities. The surface coating adheres firmly, resists peeling and tolerates wiping. Both surfaces of the imported zinc selenide receive antireflection coatings, whose main function is to reduce or eliminate reflected light at the optical surfaces, increasing component transmission and reducing or eliminating stray light in the system. As applications expand, coatings have been developed for different requirements, including single-wavelength, broadband, ultrabroadband, dual-band and dual-wavelength antireflection coatings. Transmission can reach 99.8% at 10.6μm, a commonly used operating wavelength in the CO2 laser industry. As an economical transmissive focusing element, the lens is suitable for laser heat treatment, welding, cutting and infrared radiation collection. For satisfactory performance, the curved surface should face the collimated incident beam or the side with the longer conjugate distance; object distance and image distance are collectively called conjugate distances.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | ZnSe/GaAs |
| Surface finish | 20-10 scratch and dig |
| Wavelength | 10.6μm |
| Eccentricity | <3' arc minutes |
| Focal length Tolerance | ±1% |
| Effective Aperture | >90% |
| Outline tolerance | +0.0/-0.12mm |
| Edge bevel [45°] | <0.2x45° |
| Thickness tolerance | ±0.2mm |
| Coating [per surface; @10.6μm] | R<0.5% per surface @10.6μm |
| Surface figure λ [@632.8nm] | 4<λ/2per 1” Dia@632.8nm |
| Diameter | 15.26 mm |
| Focal length | 38.1 mm |
| Thickness | 1.8 mm |
| Material | CVD ZnSe |
Applications
Datasheet
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