Product Announcements:
Optical Lenses

What are the advantages of Fresnel lenses?
Thin and portable: significant reduction in thickness and weight for applications with stringent weight and space requirements.
Low cost: low material usage and simple manufacturing process.
Flexible design: different focal lengths and optical properties can be designed according to requirements. Read more...

A Plano-Convex (PCX) or Double-Convex (DCX) lens causes light to focus to a point, while a Plano-Concave (PCV) or Double-Concave (DCV) lens causes the light traveling through the lens to diverge. Read more...

Diameter: 25–25.4 mm Thickness: 4–4.5 mm Radius of curvature (concave): 5 m Coating: 99.8% R / AR @ 10.6 μm Custom machining available Read more...

Sapphire Windows are glass with parallel surfaces used to enable optical radiation to pass from one environment to another without allowing environments to mix. Material, transmission, scattering, wavefront distortion,damage threshold and resistance to certain environments should be considered when selecting windows.
Specifications:

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Precision thin-film polarizer for high-power lasers, delivering high transmission, linear polarization, and superior damage resistance. Read more...

Comparison of silicon lenses and germanium lenses
Silicon lens: suitable for NIR and MIR, high hardness, good thermal stability, low cost.
Germanium lens: suitable for MIR and FIR, high refractive index, easy to process, but high cost, poor thermal stability. Read more...

Fused silica rod lenses are processed from high purity fused silica material and have excellent optical properties. The shape is cylindrical and the length is usually larger than the diameter. Read more...

Fused silica has good transmission in the ultraviolet (UV), visible (VIS), and near-infrared (NIR) wavelengths, and especially excels in the deep ultraviolet (DUV) wavelengths. Read more...

Avantier manufactures custom zinc selenide (ZnSe) lenses in spherical, aspheric, cylindrical, and meniscus forms. With total absorption below 0.3%, they are well suited to thermal imaging, high-power CO₂ lasers, and life sciences instrumentation. Surface figure is λ/20 at 10.6 µm before coating, and anti-reflective coatings are available. Read more...

Avantier manufactures custom cylindrical lenses, including plano-convex, plano-concave, and aspheric profiles, in substrates from N-BK7 and fused silica to CaF2, Ge, Si, ZnSe, and SiC. Surface figure reaches λ/10, and each part is verified with Zygo interferometry and custom CGH nulls. Typical uses include laser beam conditioning, spectroscopy, and aerospace metrology. Read more...