Duralens™ ZnSe Meniscus Lenses
Duralens™ ZnSe Meniscus Lenses
Our standard Duralens™ AR coated CO2 laser lenses are designed specifically for 10.6 micron wavelength to increase the amount of energy going through the lens and decrease the energy absorbed in the lens. These ZnSe Meniscus lenses enable a smaller beam diameter and hence, a reduction in spherical aberration and less beam waste when precision cutting or marking with a CO2 laser. They are manufactured by automated CNC technology and designed for highest durability and accuracy, assuring complete uniformity, repeatability and consistency.
- Meniscus lens for smaller spot size
- Duralens™ coating with >99.3% transmission
- High IR transmission Zinc Selenide (ZnSe) substrates
- Approved and used by leading OEMs See All Features
Specifications
- Lens ShapePositive Meniscus
- Lens MaterialZinc Selenide (ZnSe)
- Coating TypeDuralens™
- Absorption< 0.20%
- Reflection<0.2%
- Transmission>99.3%
- Surface Figure2 Fringes@ 0.633 µm
- Surface Irregularity0.5 Fringe @ 0.633 µm
- Clear Aperture≥ 90%
- Diameter Tolerance+0.0 /-0.1 mm
- Edge Thickness Tolerance± 0.1 mm
- ETV< 0.025 mm
Features
Meniscus Lenses
The positive meniscus directs a beam to one concentrated spot. A meniscus lens has one concave and one convex surface which enable a smaller beam diameter and hence, a reduction in spherical aberration and less beam waste when precision cutting or marking. The smaller spot size provided by the lens creates the same power output in a smaller area. To achieve the smallest possible spot size the concave side of the lens is mounted face down pointing towards the material being cut. Although meniscus lenses (right image) are more expensive when compared with Plano-Convex lenses (left image) the meniscus lens offers a higher accuracy of cut and hence, can increase cutting speeds by up to 5%.
CO2 Focusing Lens Coatings
Our standard Duralens™ AR coating features <0.2% absorption rate, HeNe transparency, a standard product lifetime, and a decent cost/benefit ratio. With guaranteed low absorption (LA) and other unique characteristics, the Black Magic™ coating has a lower absorption rate, but it is not transparent, although it is more durable with an extended product lifetime. The ultra low absorption (ULA) Clear Magic™ coating, as its name suggests, it transparent, and has an ultra-low absorption rate of <0.13%, as well as an extended product lifetime, but for a higher price. Both the Black Magic™ and the Clear Magic™ coatings are made from a radioactive-free coating.
| AR COATING | Duralens™ | Black Magic™ (LA) | Clear Magic™ (ULA) |
|---|---|---|---|
| Transmission | >99.3% | >99.35% | >99.37% |
| Absorption | <0.20% | <0.15% | <0.13% |
| Reflection | <0.20% | <0.25% | <0.25% |
Resources
Literature
Duralens™ High Quality CO2 Laser Lenses(650.4 kB, PDF) Handling and Cleaning Instructions for CO2 Optics(135.2 kB, PDF)
Videos
Find out whether your CO2 laser lens is Plano-convex or Meniscus(0:35) CO2 laser optics cleaning using EZ clean(0:33) EZ test polarizers set for CO2 lens stress inspection(0:42) EZ way to find focal length of CO2 laser lens(0:43) A Virtual Tour at Ophir Optics Jerusalem Production Site(2:31)
Catalogs
High Performance Optics for High Power Lasers Brochure(3.4 MB, PDF) Laser Optics Catalog(487.6 kB, PDF) OEM Laser Optical Components Manufacturing Brochure(5.8 MB, PDF)
Technical Articles
MSDS
Duralens EXT Lens Material Safety Data Sheet(258.8 kB, PDF) ZnSe Lens Material Safety Data Sheet(210.5 kB, PDF)
