Optical Components

Precision optical components, polarization optics, crystals, assemblies, megapixel CCTV lenses, 20 MP machine vision lenses, and optical system solutions. Advanced measurement systems include Prism Master, spheric lens measurement systems, interferometers, and spectrophotometers. ISO 9001, IATF/TS16949, ISO 14001, and ISO 13485 certified with SGS.

Design and manufacture advanced custom thin-film components for OEM volume applications. Products include linear variable filters, variable dichroics, high-quality fluorescence filter sets, filters and dichroics, and filter sets for point-of-care instruments, beamsplitter cubes, and many other components.

Manufacturer of optical filters and coatings for many demanding applications such as: biomedical instruments and imaging systems, fluorescence microscopy, aerospace, surveillance, machine vision, industrial inspection such as semiconductors, food and lumber, multispectral imaging, and chemical analysis. Employee-owned.

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.

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.

Manufacturer of precision optical components and high-power laser coatings from UV to IR. Stock and custom optics: lenses, beamsplitters, filters, windows, mirrors, wave plates, large wedges, prisms, and many more. In-house custom coatings: AR, high reflection, dichroic, and polarizing. Optics from 4 mm to 16 inches.

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.

Optical devices supplier and manufacturer of acousto-optic modulators, acousto-optic frequency shifter, avalanche photodiodes, fiber coil and ASE source, couplers, isolator, circulator, FRM, WDM, narrow linewidth laser diode, semiconductor optical amplifier, EDFA, used for for fiber laser, sensor systems, and FOG.

Provides precision analog measurement and signal generation, data acquisition and control instrumentation, pulse and picosecond timing delay generation, laser diode drivers, waveform generators, and fiber optic, photonics, and mixed technology products for demanding aerospace and defense, scientific, and industrial applications.

PM fiber components; patch cords, splitters/combiners, polarizers, isolators, fused/PLCS couplers, test equipment; PER meter, polarized sources, PDL emulators, polarization controllers/analyzers, digital/motor driven/manual variable attenuators, laser/laser diode to fiber delivery systems; collimators/focusers, polarization entangled photon sources.