Andover Corporation manufactures high-quality optical filters and coatings including bandpass, ND, long- and short-pass, heat-control filters, and more. Wavelengths from UV to FIR. Deposition techniques include ion-assited e-beam deposition (IAD), and magnetron sputtering.

Conoptics design and manufacture laser modulators, beam deflectors, associated drive electronics, optical isolators and polarizers.

CVI-Melles Griot offers a complete line of opto-mechanical mounting and positioning components for the laboratory and for production or OEM requirements.

Edmund Optics (EO) is a leading producer of optics, imaging, and photonics technology.

Gooch and Housego offer frequency-conversion crystals, single crystals, pockels cells, waveplates and related optics.

Moeller-Wedel offers the largest range of visual and electronic autocollimators, providing an accuracy of up to 0.01 arc seconds, for measuring straightness, flatness, and positioning accuracy of index tables in the machine tool industry.

OFS Specialty Photonics Division is the industry leader in optical fiber design or modification for highly customized applications.

SphereOptics designs and manufactures a comprehensive line of standard and custom integrating spheres and components for photometric and radiometric applications.

Thorlabs offers a huge range of optical and photonics products.

Wavelength Technology offer CO2 laser optics.