12 suppliers

Neutral Density Filters

A neutral density filter is a light filter that decreases the intensity of the light without altering the relative spectral distribution of the energy. Also known as a gray filter.

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Reynard Corporation - San Clemente, CA

Reynard Corporation manufactures custom optics and thin-film coatings from 0.2 to 50 microns (UV-IR). Other in-house capabilities include diamond turning, optical fabrication, photolithography pattern optics, environmental testing, and design services. Prototype to production, ISO 9001:2015 certified, ITAR registered, and Cybersecurity (CMMC) compliant.

Custom Manufacturer

Rainbow Research Optics LLC - Centennial, CO

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.

Custom ManufacturerDesigner

Sydor Optics Inc. - Rochester, NY

Custom manufacturer of precision flat-surfaced, parallel, and wedged optics specializing in double-sided polishing for transmitted wavefront and parallelism. Products include optical and IR windows, glass wafers, color glass filters, mirrors, wedges, plate beamsplitters, and witness samples. ITAR registered, ISO 9001:2015 certified.

Custom Manufacturer

Chroma Technology Corp. - Bellows Falls, VT

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.

Stock Manufacturer

Schneider Optics Inc., Industrial Optics - Hauppauge, NY

Provides high-performance lenses for demanding video, digital projection, and industrial optics applications offering precision optical design, manufacture, test, and distribution of both standard and custom solutions. Serving the precision industrial market, manufactures photographic and industrial lenses and filters.

Stock Manufacturer

National Photocolor Corporation - Mamaroneck, NY

Manufacturer of thin-film pellicles for use as beamsplitters, beam combiners, attenuators, filters, and optical windows. Standard items, uncoated and coated, are available from inventory; special frames, coatings, flatness, transmission and documentation are available for custom applications.

Stock ManufacturerCustom Manufacturer

Abrisa Technologies - Santa Paula, CA

eSource Optics - Whitinsville, MA

Galvoptics Ltd. - Basildon, United Kingdom

HEBO Spezialglas - Aalen, Germany

Sherlan Optics - Changchun, China

UQG (Optics) Ltd. - Cambridge, United Kingdom

Glossary

neutral density filter A light filter that equally decreases the intensity of all wavelengths of light without altering the relative spectral distribution of the energy.
light filter A homogeneous optical medium or coating that transmits only in particular regions of the spectrum. It is used to change or modify the total or relative energy distribution of a beam of light.
optical density A measure of the transmittance through an optical medium. Optical density equals the log to the base 10 of the reciprocal of the transmittance. where τλ is transmittance. In spectroscopy, optical density is the measure of absorbance, and...
optical filter An optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical filters are used to control the spectral content of light in various applications, allowing certain wavelengths to pass through...

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