Cylindrical lens element PCL

BK7zinc selenidefused silica

Positive cylindrical lenses are used to focus light into a thin line for effective harmonic generation in nonlinear crystals, for laser scanners, spectroscopy, dye lasers, acousto-optics and other applications. They are ideal for the circularization of diode laser outputs, energy collection for linear detectors, or coupling to a slit input. The most common materials used for these lenses are BK7 and UVFS. However, UVFS has various grades and a specific grade of glass should be chosen for specific applications. If you have doubts about which type of glass is best for your application, contact us for advice. Cylindrical lenses are typically coated with e-beam technology that can reach a reflectivity of R<0.2% per surface, but for more demanding applications sputtering technology is used to achieve a reflectivity of R<0.1%. Contact us for help with your challenge. We have a team of experienced coating engineers and metrology capabilities to prototype and transfer your idea into a well-defined production process. Material BK7, FS, UVFS, CaF2, ZnSe Type Positive, negative Dimensions 3 – 200 mm Surface quality, S-D 40-20, 20-10* Surface irregularity, P-V <λ/4 @ 632.8 nm* Focal length tolerance ±1% Centration error <3 arcmin Ar coatings On request