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52 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
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
AccuCoat Inc.
AccuCoat Inc. - Rochester, NY
Supplier of thin-film coatings on polymer, metal, and glass components. Produces a wide variety of antireflective, beamsplitter, hot and cold mirror, filter and metallic coatings as well as custom coatings. Experienced in handling prototype through OEM volumes. Coatings available from UV to the IR.
Custom Manufacturer
Chroma Technology Corp.
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
Glass Fab Inc.
Glass Fab Inc. - Rochester, NY
Manufacturer of custom blanks. Products include fused quartz and silica, optical and filter glasses, and low/ultralow expansion glasses. Capabilities include annealing, slumping, sawing, grinding, edging, drilling, waterjet cutting, and CNC shaping and generating.
Custom Manufacturer
Isuzu Glass Inc.
Isuzu Glass Inc. - Torrance, CA
Manufacture and designer of integrated lens arrays, microlens arrays, aspheric lenses, and condenser lenses by glass molding. Melting heat-absorbing and laser protection glass; and UV absorbing filters, ND filters, and color glass filters. Provides optical design and assembly services.
Custom Manufacturer
Lambda Research Optics Inc. (USA)
Lambda Research Optics Inc. (USA) - Costa Mesa, CA
Lambda Research Optics manufactures catalog and custom lenses, mirrors, beamsplitters, windows, prisms, filters, and polarizers for defense, commercial, and medical laser applications. Lambda specializes in high-power coatings for excimer, YAG, fiber, CO2 lasers, and FLIR coatings. Precision polishing of CaF2, MgF2, BK7, fused silica, ZnSe, Ge, and Si.
Custom Manufacturer
OPCO Laboratory Inc.
OPCO Laboratory Inc. - Fitchburg, MA
Manufacturer of custom optics, optical replication, diffraction gratings, electro-optical assemblies, metallic and dielectric thin-film coatings for prototype and volume production. State-of-the-art manufacturing, coating, QC, assembly and class 1000 cleanrooms. Serving commercial and defense markets worldwide.
Custom Manufacturer
Rainbow Research Optics LLC
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
Schneider Optics Inc., Industrial Optics
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
Spectrogon US Inc.
Spectrogon US Inc. - Mountain Lakes, NJ
Designer and manufacturer of interference filters: narrow and broad bandpass, long- and shortwave, ND filters, atmospheric windows, AR and metallic coatings. Holographic diffraction gratings: plano, concave and blazed, pulse compression/stretcher gratings. WDM and telecom applications include diode laser tuning gratings and network communications gratings.
Stock Manufacturer
Hangzhou Shalom EO
Hangzhou Shalom EO - Hangzhou, China
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.
Custom Manufacturer
MKS/Newport
MKS/Newport - Franklin, MA
MKS/Newport designs and manufactures high performance optical filters and replicated mirrors in the UV, VIS, and NIR. Filters include bandpass, dichroic, edge, fluorescence, neutral density, and notch filters, as well as optomechanical and electro-optical assemblies based on filter technology. Mirrors include retroreflector, aspheric, and spherical.
Custom Manufacturer
National Photocolor Corporation
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
SCHOTT North America Inc.
SCHOTT North America Inc. - Duryea, PA
Develops products for applications in optics, lithography, astronomy, automotive, consumer electronics, industrial, and life sciences. Offers a variety of optical and laser glasses, optical filters, glass ceramic, IR materials, optical components, custom glass development, precision finishing, and metrology capabilities.
Stock Manufacturer
Sydor Optics Inc.
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
Guernsey Coating Laboratories Inc. - Ventura, CA
Abrisa Technologies - Santa Paula, CA
AHF analysentechnik AG - Tuebingen, Germany
American Polarizers Inc. - Reading, PA
Asahi Spectra USA Inc. - Torrance, CA
Astra Products Inc. - Copiague, NY
Avian Technologies LLC - New London, NH
bk Interferenzoptik Elektronik GmbH - Nabburg, Germany
Chang Chun Jiu Tian Optoelectric Co. Ltd. (JTOPTEC) - Changchun, China
Changchun Yutai Optics Co. Ltd. - Changchun, China
Esco Optics - Oak Ridge, NJ
eSource Optics - Whitinsville, MA
Filtrop AG - Balzers, Liechtenstein
Galvoptics Ltd. - Basildon, United Kingdom
Gurley Precision Instruments Inc. - Troy, NY
HEBO Spezialglas - Aalen, Germany
Hoya Corp. USA, Optics Div. - Milpitas, CA
IMPhotonix Inc. - North Andover, MA
Infinite Optics Inc. - Santa Ana, CA
Knight Optical - North Kingstown, RI
Koshin Kogaku Co. Ltd. - Hadano, Japan
L&L Optical Services Inc. - Indio, CA
Lasnix - Berg, Germany
LC-Tec Displays AB - Borlange, Sweden
Maier Photonics Inc. - Manchester Center, VT
Optical Instrument Laboratory Inc. - Houston, TX
Opticology Inc. - Brooklyn, NY
Opto-Line International Inc. - Wilmington, MA
Republic Lens Co. Inc. - Bangor, PA
Santec USA Corp. - Fort Lee, NJ
Shanghai HXF-LaiYi Precision Optics Co. Ltd. - Shanghai, China
Sherlan Optics - Changchun, China
Spectrogon AB - Taby, Sweden
Spectrogon UK Ltd. - Glenrothes, United Kingdom
Starna Cells Inc. - Atascadero, CA

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...
Neutral Density Filters Supplierslight filtergray filterfilters neutral densityoptical filterfilters light intensitydecrease light intensityopticsnd filters

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