Buy print edition
Photonics Buyers' Guide
Neutral Density Filters
Large Fresnel Lens
UV Cold Mirrors
Mid-IR Optical Isolators
Precision Optical Manufacturing
Argyle International is Manufacturing Mini and Micro Lens Elements
Custom Polymer Optics
Precision Glass and Sapphire Optics
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.
Spectrogon US, Inc., Sub. of Spectrogon AB - Mountain Lakes, NJ
Designer and manufacturer of interference filters: narrow and broad bandpass, long wave and short wave, ND filters, atmospheric windows, AR and metallic coatings. Holographic diffraction gratings: plano, concave and blazed, pulse compression/stretcher gratings. WDM and telecommunication...
Glass Fab Inc. - Rochester, NY
Manufacturer of custom blanks. Products include fused quartz, fused silica, optical glasses, filter glasses, and low/ultralow expansion glasses. Capabilities include annealing, slumping, sawing, grinding, edging, drilling, water jet cutting, CNC shaping and CNC generating.
Reynard Corporation - San Clemente, CA
Global Manufacturer of Custom Optical Thin Film Coatings For over 25 years, Reynard Corporation has been a premier supplier of custom optics to a global customer base. Reynard focuses on manufacturing the highest quality products with...
A.R.W. Optical Corporation - Wilmington, NC
Manufacturer of custom, standard and OEM optical components and coatings in the UV to IR region. Provides rapid prototyping through volume production for all industries. Products include assemblies, beamsplitters, filters, lenses (achromatic, cylindrical, spherical), mirrors (cylindrical, flat,...
Chroma Technology Corp. - Bellows Falls, VT
Manufacturer of optical filters and coatings for biomedical instruments and imaging systems, fluorescence microscopy, astronomy, space exploration and chemical analysis.
Gurley Precision Instruments, Inc. - Troy, NY
Manufactures stock and custom reticles, lenses, prisms, mirrors, resolution targets, step wedges, divided circles, absolute and incremental discs/scales, precision patterns and replications, measuring devices, rotary/linear encoders, engineering and surveying instruments and digital readout systems...
Kentek Corporation - Pittsfield, NH
Laser safety eyewear, barriers & signs, laser components, laser replacement parts, laser accessories, medical laser safety eye protection - find these LaserSmart® products and more in the Kentek Laser Store. Laser Safety KENTEK offers a wide range of laser safety products including over...
National Photocolor Corp. - Mamaroneck, NY
National Photocolor is a manufacturer of off-the-shelf and custom pellicles. We offer a broad selection of pellicle beamsplitters, filters and windows for UV to IR applications. Many custom type coatings and specially sized mounts are available for shipment within days after receipt of an order....
Acton Optics & Coatings/Princeton Instruments, Div. of Roper Industries - Acton, MA
Acton Optics & Coatings provides high laser damage threshold excimer and UV laser optics, Al and MgF2 broadband mirrors and coatings, VUV/UV optical filters, detector-enhanced coatings and assemblies. Acton has a reputation spanning 50 years working with researchers and engineers in disciplines...
Berliner Glas KGaA Herbert Kubatz GmbH & Co. - Berlin, Germany
Offers precision thin-film coated optical components, optomechanical and electro-optical assemblies and systems from design to production for semiconductor, industrial and medical applications, as well as customized measurement set-ups. Also offers technical glass refinement for displays. ISO...
Bond Optics, LLC - Lebanon, NH
Custom manufacturer of precision optical components and precision mechanical glasswork. Materials processed include fused quartz/silica, optical glass, filter glass, pyrex, Zerodur and ULE. Custom coating and interferometric testing services available.
China Daheng Group, Inc. - Beijing, China
Offers a wide variety of off-the-shelf and custom optics; optomechanical components including lenses, telecentric lenses, mirrors, prisms, filters, polarizing beamsplitters, gratings; and crystal optics. Designs and manufactures lens systems for CCDs, CMOS, projectors and scanners. Also offers a...
Cosmo Optics, Inc. - Middletown, NY
Founded in 1957, Cosmo Optics is involved primarily in prototypes of optical components and assemblies for industrial and scientific use. Small-scale production is also frequently undertaken. Cosmos’ wide range of facilities enables fabrication, testing and assembly of the most intricate...
Esco Optics - Oak Ridge, NJ
US manufacturer of custom and standard optics for the UV, visible and IR wavelengths. In house production of lenses, windows, mirrors, blanks, prisms, filters and optical coatings. For over 50 years, we have proudly offered exceptional customer service, low prices and short lead times. ITAR...
Guernsey Coating Laboratories, Inc. - Ventura, CA
Supplier of vacuum deposited optical coatings including bandpass and neutral density filters, antireflection coatings, and thermal, electron-beam, ion-assisted and ion-sputtered thin films. Research and development of ultrastable films for optical and semiconductor applications. Over 30 Years in...
Newport Corporation - Irvine, CA
Newport Corporation is a leading global supplier of advanced technology products and solutions for Scientific Research, Life & Health Science, Aerospace and Microelectronics markets. Established in 1969, Newport has over 40 years of industry knowledge and...
OPCO Laboratory, Inc. - Fitchburg, MA
Full service manufacturer of high precision custom optics, optical replication, diffraction gratings, electro-optical assemblies, metallic and dielectric thin-film coatings for prototype and high volume production. State-of-the-art manufacturing, coating, QC, assembly and class 1000 cleanrooms,...
PFG Precision Optics - Ocean Springs, MS
Manufacturer of precision optical components from UV through mid-IR wavelengths. Components include prisms, windows, filters, wedges, mirrors, beamsplitters, and all types of singlet, doublet and triplet lenses. Electron and ion-assisted deposition coating services available. Prototype production...
Rainbow Research Optics, Inc. - Centennial, CO
Manufacturer of precision optical components and high-power laser coatings from UV to IR. Supplier of stock and custom optics. Products include lenses, beamsplitters, filters, windows, mirrors, wave plates, large wedges and prisms. In-house coatings include antireflection, high reflection, dichroic...
Rocky Mountain Instrument Co. (RMI) - Lafayette, CO
Rocky Mountain Instrument Co. is a fully integrated manufacturer of high quality photonics products. Capabilities include: custom optical fabrication, UV/visible/IR coatings, optical assemblies, DPSS laser systems (1064/532/355 nm) and ultracompact laser marking engines. RMI can handle OEM...
SCHOTT North America, Inc., Advanced Optics - Duryea, PA
SCHOTT is a multinational, technology based group developing and manufacturing special glass, specialty materials, components and systems for more than 125 years to improve how people live and work. SCHOTT Advanced Optics, with its deep technological expertise, is a valuable partner for its...
Valley Design Corp., Headquarters - Shirley, MA
Since 1975 Valley Design Corp. has been an industry leader in advanced materials processing, as providers of precision lapping, polishing, dicing, CNC machining, grinding and other precision machining services including slicing, backgrinding, wafer and die thinning, optical edge/angle polishing and...
Vogelin Optical Company, Inc. - Norwood Young America, MN
Vogelin Optical Company is an established manufacturer of precision optics and optical material edging, polishing, and machining services. Founded over 60 years ago, Vogelin has been the leader in the production of specialized optical components. Our client base spans from Fortune 100 firms to...
AHF analysentechnik AG - Tuebingen, Germany
American Polarizers, Inc. - Reading, PA
Anchor Optics, Div. of Edmund Optics, Inc. - Barrington, NJ
Avian Technologies LLC - New London, NH
bk Interferenzoptik Elektronik GmbH - Nabburg, Germany
Cheshire Optical, Inc. - Keene, NH
Curtis Technology, Inc. - San Diego, CA
Elliot Scientific Ltd. - Harpenden, England
EMF Corp., A Dynasil Member Co. - Ithaca, NY
eSource Optics - Whitinsville, MA
Ferroperm Optics A/S - Vedbaek, Denmark
Filtrop AG - Balzers, Liechtenstein
Fotodyne, Inc. - Hartland, WI
Frontier Optics, Inc. - Tustin, CA
Goettinger Farbfilter GmbH - Bovenden, Germany
HEBO Spezialglas GBR - Aalen, Germany
Infinite Optics Inc. - Santa Ana, CA
International Micro Photonix Inc. - North Andover, MA
JG InterNational - Shanghai, China
Knight Optical (UK) Ltd. - Harrietsham, England
Koshin Kogaku Co., Ltd., Sub. of Yamaichi Electronics Co. Ltd - Hadano, Japan
Kryptronic Technologies - Munich, Germany
L&L Optical Services, Inc. - Santa Ana, CA
L-Lite Optics Corp. - Ontario, CA
Lasnix - Berg, Germany
Maier Photonics, Inc. - Manchester Center, VT
Materion Barr Precision Optics & Thin Film Coatings - Westford, MA
Newport Industrial Glass, Inc. - Stanton, CA
NSG Precision Cells, Inc. - Farmingdale, NY
ONTF-Optics For Science, Technology & Photography - Cherkassy, Ukraine
Optical Instrument Laboratory, Inc. - Houston, TX
Opto-Line International Inc. - Wilmington, MA
Precision Applied Science, LC - Ann Arbor, MI
Reichmann Feinoptik GmbH - Brokdorf, Germany
Republic Lens Co., Inc. - Bangor, PA
Schneider Optics, Sub. of Jos. Schneider Optische Werke GmbH - Van Nuys, CA
Scientific Optical Ltd. - St. Leonards On Sea, England
Shanghai HXF-LaiYi Precision Optics Co., Ltd. - Shanghai, China
Shanghai Optics - Clark, NJ
Spectrogon AB - Taby, Sweden
Spectrogon UK Ltd., Sub. of Spectrogon AB - Glenrothes, Scotland
Spectrum Optical Sources, Inc. - Hackettstown, NJ
Starna Cells, Inc., Member of the Starna Scientific Group - Atascadero, CA
Sterling Resale Optics - Erie, CO
UQG Ltd. - Milton, England
neutral density filter
Also known as a gray filter. A light filter that decreases the intensity of the light without altering the relative spectral distribution of the energy.
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.
filters neutral density
filters light intensity
decrease light intensity
PhotonicsBuyersGuide.com is part of Photonics.com and is published by Photonics Media. For more coverage of photonics, visit these pages on Photonics.com.
Photonics Buyers' Guide
Prism Awards for Photonics Innovation
Research & Technology
Light Matters Weekly Newscast
Browse by Subject
Lasers & Laser Systems
Imaging & Sensing
Optics & Optical Coatings
LEDs & Other Light Sources
Test, Measurement & Positioning
Browse by Region
Photonics Dictionary Plus
Calendar of Courses & Events
Laser Wavelength Chart
Site Info and Support
Submit a Press Release
Advertise / Media Kit
Buyers' Guide Listing
Purchase Buyers' Guide
Purchase Wall Charts
Term and Conditions
VIEW MOBILE VERSION
Please log in In to use this feature.
Keep me logged in?
Not a member? Click here to register.
Please register to use this feature.
Complete member details now?
Welcome to the "My Photonics" bar! This tool allows you to personalize your experience throughout the Photonics.com site.
To start using the "My Photonics" bar, simply log in to your Photonics.com account by clicking on the "Log In" button on the right side of this bar. If you do not have a Photonics.com account, you may create one simply by clicking on the "Register" button on the right side of this bar.