Optical Components

Manufacturer of dichroic glass polarizers for the UV, VIS, NIR, and MIR spectral range. Also produces patterned polarizers that have arbitrary shaped areas with different directions of polarization.

Manufactures and sells Fresnel lenses, lenticular lenses, sheet prisms, and linear Fresnel lenses. Manufactures any type of lens to customer specifications.

Supplier of sophisticated materials for research or production applications. Offers laser crystals and laser components, optical components, optoelectronic components, metals (high purity or single crystals), plasma technology, UHV components, and precision wire saws.

CASTECH is a global leader in nonlinear optical crystals, laser crystals, precision optics, and laser components for laser applications, optical communications, biomedical VR/AR, and lidar. With ISO 9001 and IAFT 16949 quality management system, we consistently enable our customers from prototype to mass production stage.

As a matured and professional global supplier with a sophisticated engineering background, we specialize in the manufacturing and sales of electro-optics, including laser crystals and components, laser mirrors, nonlinear crystals, wave plates, polarizers, optical windows and lenses, IR camera lens assemblies/optical filters, scintillators, and more.

Standard and custom photodetectors and high-quality VIS and IR LEDs. Our advanced performance sensors operate from the extreme ultraviolet (UV) to the mid-infrared (mid-IR). Photodetectors provide high-energy particle, electron, x-ray, and UV detection; plus excellent mid-IR sensitivity to discriminate gases, detect heat, sparks, and flames.