Aspheric lenses have much lower f-numbers, allowing them to perform better than spherical lenses in light collection, projection, illumination, detection and condensing applications. Since the focal lengths are often very short, compact designs are frequently possible. We can available uncoated or with broadband visible or broadband NIR antireflection coatings. For more economic or OEM applications,If small diameter lenses are required, our molded glass aspheric lenses with visible or NIR antireflection coatings are available mounted in a stainless steel threaded holder or unmounted. Aspheric objective lenses are also available that offer the same magnification and on-axis performance as microscope objectives in a more compact package.

Zinc Selenide (ZnSe) Aspheric Lenses are designed to provide diffraction-limited focusing performance for 10.6µm CO2 lasers. Manufactured from Coherent® Infrared ZnSe material featuring <0.0005 cm-1 bulk absorption at 10.6µm,these lenses are available uncoated or with a broadband anti-reflection coating providing superior transmission from 8 - 12µm.

Notes: Special care should be taken when handling Zinc Selenide as it is a toxic material. Always wear rubber or plastic gloves to avoid risk of contamination.