doricTM Gradient-Index Half Cylindrical Lens These plano-convex cylindrical lenses are derived from doric™ gradient-index cylindrical lenses by grinding and polishing. Compared to its parent lens, half-doric lens has longer focal length, longer working distance and NA = 0.35. They can be used in the visible and near infra-red spectrum as fast-axis collimators for single laser diodes or for building cylindrical lens arrays for laser diode bars. The absence of acylindrical surfaces makes the alignment of plano-convex cylindrical lenses simple and fast. In order to accommodate a small emitter pitch, the edge of the lens may be ground to a desired width and the initial rod diameter could be trimmed to a smaller height as well. Core is proprietary graded index material. Index profile is available after signing a non-disclosure agreement. WEBCODE: Lens Type FUSED SILICA (with doped core) Transition Temperature Design Wavelength Operating Wavelength Available diameter Dimension tolerance Effective focal length Working distance Numerical aperture Beam quality factor 2S-VIS : broad band 2 side AR coating @ 600 – 900 nm 2S-NIR : broad band 2 side AR coating @ 750 – 1100 nm AA-808 : narrow band all-around @ 800 – 820 nm AA-940 : narrow band all-around @ 930 - 950 nm other custom diameter and custom AR coating are available upon request page 1 / 1 doricTM Gradient-Index Half Cylindrical Lenses (12/07) www.doriclenses.com 418.877.5600