Meniscus Lens, ZnSe, 38.1 mm, 7.5 in. Focal Length, 7.4 mm Edge, DURALENS
The 61983-117 DURALENS™ coated Meniscus Infrared Lens is made of ZnSe material and is Trumpf® / Amada® OEM compatible. It has a diameter of 1.5 in. (38.1 mm), edge thickness of 7.4 mm, and a focal length of 7.5 in. Zinc Selenide's low absorption coefficient makes it a perfect candidate for focusing applications using high power CO2 lasers. They are designed for high durability and accuracy and manufactured by automated CNC technology to assure complete uniformity. In most laser cutting machines, meniscus lenses are used because they produce a smaller focus diameter.
Specifications
Lens Shape
Meniscus
Diameter
38.1 mm
Lens Material
ZnSe
Antireflection Coating
DURALENS™
Effective Focal Length (EFL)
7.5 in.
Surface Accuracy, Irregularity
0.5 Fringe @ 0.633 µm
Surface Figure
2 Fringes @ 0.633 µm
Diameter Tolerance
+0.0/-0.1 m
Edge Thickness (T<sub>e</sub>)
7.4 mm
Edge Thickness Tolerance
±0.1 mm
Clear Aperture
≥90%
Absorption
<0.20%
Transmission
>99.3%
Reflectance
<0.2%
OEM Compatibility
Trumpf®, Amada®
Lens Shape
Meniscus
Diameter
38.1 mm
Lens Material
ZnSe
Antireflection Coating
DURALENS™
Effective Focal Length (EFL)
7.5 in.
Surface Accuracy, Irregularity
0.5 Fringe @ 0.633 µm
Surface Figure
2 Fringes @ 0.633 µm
Diameter Tolerance
+0.0/-0.1 m
Edge Thickness (T<sub>e</sub>)
7.4 mm
Edge Thickness Tolerance
±0.1 mm
Clear Aperture
≥90%
Absorption
<0.20%
Transmission
>99.3%
Reflectance
<0.2%
OEM Compatibility
Trumpf®, Amada®