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ZnSe CO2 Laser Focus Lens D25.4mm for die board laser cutting machine
SPT manufacturing CO2 laser lens all adopt the U.S.A. imported CVD ZnSe. Imported CVD ZnSe
has double -sided semipermeable films, which its main function is to decrease or eliminate the
reflective light from lens, prisms, etc. and thus to increase these component transmittance level
and decline or eliminate stray light.
Our CO2 laser lens have advantages over than those of others, such as low material absorption rate
enduring high power density, firm surface membrane and resistant to wipe.
In CO2 laser industry working band 10.6 um, our lenses are commonly used through rate of 99.8%.
As a most economical transmission focus components, lens are widely used in some industries,
such as laser heat treatment, welding, cutting and infrared radiation collection, in order to obtain
satisfactory performance and achieve the purpose that the surface of the lens should be towards
the direction of imputed light beam towards the conjugate distance the longer end.



The Parameter of SPT CO2 laser lens F.L50.8mm
Material | ZnSe / GaAs |
Design Wavelength | 10.6μm |
Focal Length Tolerance | ±1% |
Diameter Tolerance | +0.0/-0.12mm |
Thickness Tolerance | ±0.2mm |
Surface Accuracy | <λ/2per 1” Dia 632.8nm |
Surface Quality | 20-10scratch and dig |
Centration | <3' arc minutes |
Clear aperture | >90% |
Bevelling | <0.2×45° |
AR/AR coating | R<0.5% per surface 10.6μm |
The Technology Parameters of SPT CO2 laser lens
Type | Diameter(mm) | F.L(mm) | E.T(mm) | Material |
SPT12.7-2.0-1.8 | 12.0 | 50.8 | 1.8 | PVD ZnSe / GaAs |
SPT14.5-2.0-1.8 | 14.5 | 50.8 | 1.8 | CVD ZnSe |
SPT16.0-1.5-2.0 | 16.0 | 50.8 | 2.0 | CVD ZnSe |
SPT16.0-2.0-2.0 | 16.0 | 50.8 | 2.0 | CVD ZnSe |
SPT18.0-2.0-2.0 | 18.0 | 50.8 | 2.0 | CVD/PVD ZnSe |
SPT19.05-2.0-2.0 | 19.05 | 50.8 | 2.0 | CVD/PVD ZnSe |
SPT20.0-2.0-2.0 | 20.0 | 50.8 | 2.2 | CVD ZnSe/ GaAs |
SPT1.0”-2.0-3.0 | 25.4 | 50.8 | 3.0 | CVD ZnSe |
SPT1.1”-2.0-3.0 | 27.94 | 50.8 | 3.0 | CVD ZnSe |


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Company information & Certifications
SPT laser is a HI-Tech enterprise specialized in researching, developing, manufacturing & selling of laser photonics products with more than 10 years industry experience. Our main products includes CO2 laser tube, laser lens, laser power supply and 3D Dynamic focusing marking control system. We have powerful R&D term, high efficiency manufacture capacity and excellent quality control system. Our production carry out strictly as ISO9001
International management standards, its obtained lots of China patents, C E certificate.


SPT laser insists on growing up with customers together by honest and responsable attitude, and put fully energy to making a most vigorous international famous brand, we are dedicated to laser field and realize the sustainable development.

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