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Lamp Standards
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Optical Radiation measurements require a series of precise steps to achieve the
highest accuracy possible. One of the most important issues is to use a well characterized
standard that is compatible in geometry and energy level (as well as spectral range).
Unfortunately, it is not always possible to achieve such compatibility when calibrating
an optical radiation measuring system. At Photo Research we provide several alternatives
in lamp standards. We maintain low calibration uncertainties by use of highly developed
equipment during the transfers from the
N.I.S.T. (National Institute of Standards and Technology) Standards and
the Standards being supplied to our customers. Full calibration black room set ups
with all the necessary hardware and accessories are offered by Photo Research to
enable users to establish their own low uncertainty traceability to N.I.S.T. (formerly N.B.S.).
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Our calibration standards include:
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Spectral Radiance
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Spectral Irradiance
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Luminous Intensity
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Color Temperature
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NVIS Radiance
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Integrating Sphere Sources and Reference Sources
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Photometric and Radiometric Filter Standards
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Reflectance Standards
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Our Measurement Services include:
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CRT/FPD
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Aerospace/Military Internal and External Lighting
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Automotive Interior Lighting
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Spatial Analysis
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Scientific Research
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Motion Picture Industry
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Research and Development
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Spectral Irradiance Lamp Standards
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Spectral Irradiance - These standards are tungsten filament lamp
standards of the same type calibrated by
N.I.S.T. and of other practical output levels for the calibration of photometers,
radiometers, and spectroradiometers. Their spectral ranges can vary from 250 nm
to 1100 nm, depending on the specific application. These can also be issued with
a Total Irradiance Calibration.
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6000-0014-00
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IRR-101 - Spectral Irradiance, 250-1100 nm
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6000-0014-01
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IRR-102 - Spectral Irradiance, 380-780 nm
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The above listed lamps are offered in 1000 Watt or 650 Watt models. All lamp standards
should be operated with a highly regulated current power supply with regulation
of ±0.05%. This will enable the user to maintain the uncertainty levels of
the measurements or transfers to an acceptable minimum.
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Photometric Lamp Standards
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Photometric - These standards are strictly used in photometry to
establish scales of illuminance, color temperature, and luminance. (It is necessary
to use Reflective or Transmissive Standards in conjunction with these lamp standards
to establish a luminance scale.) These Lamp Standards are derived from our Spectral
Irradiance Scale.
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6000-0014-02
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PHO-101 - Photometric, Cp Standard
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6000-0014-03
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PHO-102 - Additional Cp Calibration
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6000-0014-04
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PCT-111 - Photometric, Color Temperature Standard
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6000-0014-05
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PCT-112 - Additional Color Temperature Calibration
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6000-0014-06
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MCP-101 - Luminous flux or MSCp Standards (set of 3)
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6000-0014-07
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MPT-111 - Photometric, Color Temperature Standard (set of 3)
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6000-0014-08
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MPT-112 - MSCp & Color Temperature Standards (set of 3)
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NOTE: We offer No. 715, No.327, No.683 and other types for luminous flux or MSCp
Standards.
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DC Power Supplies
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Programmable DC Power Supplies - The Regulated Constant Current
Sources that we offer are designed to operate tungsten-filament lamp standards with
the highest accuracy possible. An error of ±0.25% in current can translate
to ±1.0% spectral error at 550nm and ±0.25% error at 250nm can translate
to ±3.0%. The supplies we offer operate with a ±0.01% uncertainty
with a ramp function to avoid electrical shocking to the filament. These also have
a built in elapsed time meter which allows the user to keep track of the operation
time on up to ten different lamp standards. These supplies come with an RS-232 interface
(IEEE-488 optional) to access the internal microprocessor's control functions via
a user's command program for automation of lamp operation.
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6000-0014-18
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PS-65A - Power Supply
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Power Supply for 10 Through 200 Watt Standards
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6000-0014-19
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PS-83A - Power Supply
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Power Supply for 10 Through 1000 Watt Standards
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Reflectance Standards
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Reflectance Standards - Reflectance Standards are grouped into
two areas: Diffused and Specular reflectance. Our Diffused Reflectance Standard
is designed with a ¼-20 screw mount and utilizes PTFE as the reflective material.
These are typically utilized in the measurements of illuminance or irradiance to
characterize lamp sources. A Specular Reflectance Standard is utilized in areas
where a specular component with known spectral characteristics needs to be introduced
for display analysis.
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6000-0014-29
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RS 3 - Diffuse Reflectance, (Nominal - 98% Reflectance in the Visible)
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6000-0014-30
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PRS-3 - Diffuse Reflectance, Photometric (Calibrated Photometrically)
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6000-0014-31
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SRS-3 - Diffuse Reflectance, (Spectral Calibration 350-780 nm)
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Transmissive Filter Standards
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Transmissive Filter Standards - Filter Standards are used for photometric,
colorimetric, and spectrophotometric calibrations and measurements. These are used
as reference materials to render specific transmittance or chromaticity coordinates.
These Standards are calibrated with our most accurate systems that provide high
spectral purity with low stray light levels. Another type of Transmissive Standards
are Opal Diffused Transmittance Standards. These are most typically used on a photometric
bench to accurately obtain a luminance level from known illuminance being projected
at a distance from a Lamp Standard.
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6000-0014-36
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CRF-35 - Chromaticity Reference Filters
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6000-0014-37
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NBS-3215 - IPL Red Limit Calibration Filter
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6000-0014-38
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AVR-5P - Aviation Red Filter Set
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6000-0014-39
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NDF-XX*P - Neutral Density Filters (Spectrally Calibrated)
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(*: XX Specifies density i.e. -05=0.5D, 10=1.0D, etc.)
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6000-0014-40
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OGC-4P - 4" diameter Opal Diffuser (Luminous Transmittance Factor other shapes and
sizes available on request)
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6000-0014-41
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D-65 - Day Light Filter
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2" x 2" (50.8 x 50.8 mm) external filter. D65 closely resembles the relative spectral
energy distribution of daylight and closely matches that of a black-body at 6500K.
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NOTE: Customer submitted filters may also be Characterized and Standardized if they
are found suitable for the specific requirement.
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Calibrated Test Pattern
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Calibrated Test Pattern Template - This Template with N.I.S.T. traceability will provide the means for spatial
calibration of the PR-920 or a microscanner.
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6000-0014-42
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CTP-103 - Calibrated Test Pattern Template
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