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.

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

Optical Gold Coated Mirrors Average Reflectance >94% from 800 nm to 20 µm Shape could be customized: Round, Square, Elliptical, Right angle prisms Material could be customized: Fused silica, Pyrex, N-BK7

Retroreflectors (Corner Cube Prisms) reflect an image or beam back toward its original direction via three total internal reflections (TIR) 180° Reflection Inverts Image 3 arcsec Beam Deviation

Polarizing Beamsplitter Cubes are constructed by cemented two right angle prisms High Damage Threshold Coated for Laser line 355, 405, 532, 633, 780 - 808, 1064 nm or Broadband

ZnS is used widely for IR components, windows and lenses, and applied for Thermal Imaging, long-wave infrared sensors.