Survey Prisms are for Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional positions of points and the distances and angles between them.

CaF2 has transparent range from 170-7800nm. The refractive index is 1.399 at 5000nm. 1. Low absorption coefficient 2. High damage threshold, 3. Low Dispersion (with an Abbe Number of 95) 4. Low fluorescence 5. Excellent water, chemical, and heat resistance

BBO Crystal is an efficient NLO crystal for the second, third and fourth harmonic generation of Nd:YAG lasers, and the best NLO crystal for the fifth harmonic generation at 213 nm.

Plaon-convex cylindrical lenses are used to provide focusing power in one section only, For illumination or detection of light from line sources.Also used for anamorphic compression of beams and images. 1. Used to Focus Light in One Dimension 2. Provide Anamorphic Shaping of a Beam 3. Rectangular and Circular Form Factors Available

Hollow Retroreflectors are constructed of three first-surface mirrors assembled by a proprietary process into a mutually-orthogonal inside corner. Incident Light is Reflected Back to the Source Hollow Lightweight Design

Custom step windows are ideal use in viewports, pressure, and vacuum situations. Sapphire step windows also make great viewports for deep ocean vehicles.