Reflectance Targets

Product Portfolio
Diffuse reflectance targets and standards are available from AMS Technologies with reflectance values of 2% to 99% over wavelength spectra as wide as 250 nm to 2500 nm. Reflective areas range from 31.75 mm diameter all the way up to 1.2 m x 2.4 m.

Maintaining constant contrast over a wide range of lighting conditions, our series of diffuse reflectance targets is ideal for laboratory, production and field applications that require long exposure to harsh environmental conditions. These targets are available in white or gray plates up to 610 x 610 mm, mounted in an aluminium frame.

Uniform spectral response and consistent appearance within varying lighting environments are main characteristics of our greyscale reference reflectance targets, available as rectangular boards (0.5 x 0.5 to 1.2 x 2.4 m) in grey or white, and used to characterize the performance of e.g. spectral imaging and Lidar sensing systems. These targets’ material shows no gloss, no polarization, and no fluorescence, is thermally and physically durable, thermally color stable, and UV light stable.

Our durable, chemically inert, diffuse reflectance standards are spectrally flat over the UV-VIS-NIR spectrum using a reflectance material which is the most Lambertian reflector available for use over this wavelength range. Housed in a durable delrin holder with a protective cover, these reflectance standards are available individually and in sets of four or eight standards.

Custom targets of various reflectance values and/or in larger dimensions up to 3 x 3 m can be constructed and calibrated – contact the AMS Technologies experts to discuss your customized diffuse reflectance target or standard solution!

Related Products
Complementing our reflectance targets, AMS Technologies offers a broad portfolio of integrating spheres for creating diffuse light radiation or collecting strongly divergent radiation. General-purpose integrating spheres are available with diameters from 2.5 cm up to 1.5 m, 3 or 4 ports and a choice of reflectance materials or coatings – also as ready-to-use starter kits packaged with the most common accessories.

Both our reflectance targets and integrating spheres can be used with our selection of broadband, ASE and supercontinuum light sources, including full-spectrum LED sources, full-range halogen/deuterium light sources, LED/SLED broadband light sources, and many more.

In addition to integrating spheres and reflectance targets, we carry a broad portfolio of further optical test and measurement solutions: our beam profilers allow for beam analysis, beam position detection and control, and the precise alignment of the beam to a target point. Our extensive range of spectroscopic instruments includes spectrometers, spectrographs and spectroscopy cameras. Our interferometers are important tools for quality control. We carry interferometers for measuring fiber holders, single- and multi-fiber connectors, but also systems for other applications like a fiber-pigtailed Mach-Zehnder free space interferometer or Michelson and Mach-Zehnder fiber interferometers.

A broad portfolio of further devices for inspection, test and measurement of optical connectors is available like an extensive range of fiber optic microscopes for every application and budget, tools and systems for measuring passive optics and connectors, as well as other fiber properties measurement devices like fiber analysers, tensile testers, or refractive index measurement services.

Equipment like light sources, optical power meters or OTDRs allow tests of optical fibers or patch cables in the laboratory as well as in the field.

Tools for fiber optics processing, dispensing and curing of optical adhesives and cleaning of optical connector surfaces round off the AMS Technologies range of solutions around optical test, tools and measurement.

Definition
Diffuse reflectance targets and standards are designed to be as close as possible to “Lambertian reflectance”, a property defining an ideal "matte" or diffusely reflecting surface. To an observer, a Lambertian surface’s brightness appears to be the same regardless of the viewing angle. The Lambertian surface (named after Johann Heinrich Lambert) yields isotropic luminance, while the luminous intensity obeys Lambert's cosine law.

Applications: Reflectance targets are useful as field calibration targets for processing reflectance images derived from multi- or hyperspectral cameras. If a camera does not have an automatic color correction function (white balance), reflectance standards enable true color reproduction under different lighting conditions by performing the color balance manually. Reflectance targets are used to test and calibrate remote sensing instruments, spectrophotometers, spectroradiometers and image sensors in autonomous vehicle technology – perfect for testing time-of-flight instrumentation (LIDAR systems) – and they are also suitable for determining light levels and uniform illumination in imaging systems.

Alternative Terms: Diffuse Reflectance Target; Reflectance Standard; Lambertian Reflectance Target; Reflective Target; Diffuse Reflecting Reference Measuring Surface

Permaflect® Diffuse Reflectance Targets

Near Lambertian; 350-1000 nm; Grey Scale Level 5-94%; Uniformity ±1%, ±1.5%, ±2%; Target Size 0.5x0.5-1.2x2.4 m Labsphere’s Permaflect® large-area, grey and white, reference diffuse reflectance targets are ideal for accurately assessing short-range and long-range sensitivity over the dynamic range of LiDAR systems. For imaging applications your grey target solution must work for a wide variety of lighting environments and still maintain its appearance. Most importantly it has to have uniform spectral response. It also must be thermally and physically durable, UV light stable, thermally color stable, no gloss, no polarization and no fluorescence. If your grey target solutions do not meet these requirements, you need Permaflect diffuse reflectance targets. Permaflect targets are available for individual purchase in three sizes: 0.5 x 0.5, 1.0 x 1.0, 1.5 x 1.5 or 1.2 x 2.4 m, unframed and with or without mounting. Available reflectance factors are 5%, 10%, 18%, 50%, 80% and 94%. Permaflect diffuse reflectance targets are also available in Labsphere's LiDAR Test Target Kits, including three reflectance levels; 10%, 50% and 80%, a robust case that holds all three Permaflect targets for storage and transport, and spectral reflectance and uniformity test reports. The kits come in a choice of three target sizes; 0.5 x 0.5, 1.0 x 1.0 and 1.5 x 1.5 m. Key Features: Lightweight: 1.5 kg (0.5 x 0.5 m) to 18 kg (1.2 x 2.4 m) Tailorable Targets Sizes: 0.5 x 0.5, 1.0 x 1.0, 1.5 x 1.5, 1.2 x 2.4 m Target Sizes Are Ideal for the Operating Distance Reflectance Levels in NIR Laser Wavelength 905 to 940 and 1550 nm Grey Scale Levels: 5%, 10%, 18%, 50%, 80%, 94% Variance From Average: ±1%, ±1.5%, +3%/-0% Uniform Reflectance Over the Entire Reflecting Surface – Uniformity: ±1%, ±1.5%, ±2% Typical Flatness: 0% to 8% Peak-to-Peak From 350 to 950 nm Near Lambertian Diffuse Reflectance Factor for Incident Angle Independence Durable and Robust for Production and Field Use Easy to Clean LiDAR Test Kit Accommodates Mounting of the Frameless Targets Applications: LiDAR; Time of Flight; Ground Truth; Imager Calibration; Sensor/Source Compensation; Remote Sensing; Coatings & Materials; Airborne Calibration; Automotive Sensor Calibration; Spectral Radiance; Spectroradiometer Calibration; Reflectance Factor

Product number: SW11387

Manufacturer: Labsphere

Spectralon® Diffuse Reflectance Standards

Highly Lambertian; 250-2500 nm; Reflectance Factor 2-99%; Reflective Area Ø 31.75, 50.80 mm; Dimensions Ø38.1x14.0, Ø60.45x15.2 mm Labsphere’s Spectralon® diffuse reflectance standards can offer the highest diffuse reflectance values of any known substance. These durable, chemically inert standards can have typical reflectance values ranging from 2% to 99% and are spectrally flat over the UV-VIS-NIR spectrum. All Spectralon materials are optically flat to ±4% over the range of 250 to 2500 nm and ±1% over the photopic region of the spectrum. Spectralon diffuse reflectance standards are highly Lambertian, with Spectralon SRM-99 reflectance material being the most Lambertian reflector available for use over the wavelength range from 250 to 2500 nm. All reflectance calibration tests are performed in the Reflectance Spectroscopy Laboratory at Labsphere. The standards used in these tests are directly traceable to the National Institute of Standards and Technology (NIST). Spectralon diffuse reflectance standards are available individually and in sets, consisting of a diffuse white standard and a selection of diffuse gray standards. Each standard is supplied with complete diffuse reflectance data from 250 to 2500 nm, every 50 nm. All standards are housed in a durable delrin holder with a protective cover. Diffuse reflectance standards are available in sets of four or eight standards in either 31.75 or 50.80 mm diameters. A set of four standards includes one each of the following reflectance values: 99%, 75%, 50% and 2%. A set of eight standards includes one each of the following reflectance values: 99%, 80%, 60%, 40%, 20%, 10%, 5% and 2%. Diffuse reflectance standards are also available individually (31.75 or 50.80 mm diameter, reflectance values 99%, 80%, 75%, 60%, 50%, 40%, 25%, 20%, 10%, 5% and 2%) or even on custom order with reflectance properties to meet your specific needs. Please contact the AMS Technologies reflectance standard experts to discuss your customized diffuse reflectance standard solution. Key Features: Calibrated Spectralon Standards, Accredited Under NVLAP ISO 17025 Lab Code 200951-0 Highly Lambertian Durable Chemically Inert Wavelength Range: 250 to 2500 nm Spectrally Flat Over the UV-VIS-NIR Spectrum Optically Flat to ±4% Over Wavelength Range, ±1% Over the Photopic Region of the Spectrum Reflectance Factor: 2% to 99% Reflective Area: 31.75, 50.80 mm Diameter Dimensions: 38.1 mm Dia. x 14.0 mm Height, 60.45 mm Dia. x 15.2 mm Height Applications: Densitometers; Integrating Sphere Systems; Optical Equipment; Photographic Equipment; Reflectometers; Remote Sensing Instruments

Product number: SW11386

Manufacturer: Labsphere

Spectralon® Diffuse Reflectance Targets

250-2500 nm; Reflectance Value 2-99%; Reflectance Tolerance at 600 nm ±2%-±5%; Reflective Area 50.8x50.8-610x610 mm; Dimensions 57x57x17-616x616x17 mm Labsphere’s Spectralon® diffuse reflectance targets are ideal for laboratory, production and field applications that require long exposure to harsh environmental conditions such as field validation experiments performed to collect remote sensing data. Because of the diffuse reflectance properties of Spectralon, these targets maintain a constant contrast over a wide range of lighting conditions. Spectralon diffuse reflectance targets are available in plates up to 610 x 610 mm, in white or gray material, and are mounted in a rugged anodized aluminum frame. Calibration data from 250 to 2500 nm, every 50 nm, is supplied with the targets. Calibration data is traceable to the National Institute of Standards and Technology (NIST). All targets are thermally and chemically stable and easily cleaned. Targets larger than 610 x 610 mm can be constructed and calibrated, and custom targets of various reflectance values are also available up to 3 x 3 m. Please contact the AMS Technologies reflectance target experts to discuss your customized diffuse reflectance target solution. Key Features: Durable and Washable Wavelength Range: 250 to 2500 nm Various Reflectance Values Available: 2% to 99% Reflectance Tolerance at 600 nm: ±2% , ±3% , ±5% Flatness Range over 350 to 760 nm: ±4% , ±5% Impervious to Harsh Environments Thermally and Chemically Stable Reflective Area: 50.8 x 50.8 to 610 x 610 mm Dimensions Mounted: 57 x 57 x 17 to 616 x 616 x 17 mm Applications: Backlight Illuminators; Environmental Test Targets; Laser Targets; Optical Reflectors; Remote Sensing Targets; Proximity Sensors; Light/Sensor Compensation

Product number: SW11388

Manufacturer: Labsphere