Conforms to Recommendation of CIE Publication 84
nm Spectral Resolution
Photodiode Array Detectors
- Arc Lamps
- Architecture Lighting
- Art, Museum Exhibit Lighting
- Automotive Lighting
- CRT Displays
- Entertainment Lighting
- Fluorescent Lighting
- HID Lamps
- Incandescent Lamps
- Miniature Lamps
- Photographic Flash Units
- Photolithographic Systems
SLMS Spectral Lamp Measurement Systems are designed for spectral
measurements of sources with strong emission lines, such as the
high intensity discharge (HID) lamps used in commercial and urban
lighting. The strong peaks of these lamps require careful spectral
analysis. A lamp is spectrally analyzed relative to the properties
of a calibrated lamp standard.
Lamp Measurement Systems reduce the potential spectral errors
associated with a photopic detector-based measurement system.
A photodiode array spectrometer permits digital computation of
luminous flux. Easy-to-use application software computes the lumens
of the lamp using the CIE luminous efficacy function. Spectral
lamp data also yields important color properties such as chromaticity,
correlated color temperature and the color rendering indices.
sphere sizes are offered, each designed to accommodate a particular
class of lamp defined by their physical size and flux. Each system
includes a lamp measurement integrating sphere, a calibrated spectral
flux standard, a precision power supply and a diode array spectrometer.
Computer interface and applications software are included with
each system. The system power supply and diode array spectrometer
are packaged in a rack-mount console.
integrating spheres range in size from 10 to 76 inches in diameter.
The sphere design conforms to the recommendations of CIE Publication
84, providing an easy-to-operate highly accurate measurement system.
The sphere interior is coated with Spectraflect, a diffuse white
reflectance coating specifically formulated for lamp measurement.
SLMS-XX1 I Series Spectral Lamp Measurement Systems incorporate
the DAS-1100 Diode Array Spectrometer for applications in the
390 - 760 nm wavelength range. The DAS-1100 spectrometer is
a single grating, 1024 element thermoelectrically cooled photodiode
SLMS-XX21 Series Spectral Lamp Measurement Systems incorporate
the DAS-2100 Diode Array Spectrometer for applications in the
350 - 1050 nm wavelength range. The DAS-2100 spectrometer uses
two diffraction gratings and two 1024 element thermoelectrically
cooled photodiode array detectors. This novel design approach
provides both wide spectral coverage and narrow spectral resolution.
software supplied with SLMS Spectral Lamp Measurement Systems
uses a single screen to guide the user through the lamp measurement
procedures and continuously reports all spectral energy distribution
and color data of the test lamp. The lamp luminous flux is computed
using the CIE luminous efficacy function. Spectral lamp data
yields important color properties including chromaticity (x,
y, and u, v), correlated color temperature and color rendering
indices (Ra, R1 to R14, J15 and Rt). A graphic screen displays
spectral flux versus wavelength, the CIE chromacity diagram
with the measured chromacity.
Calibrated Spectral Flux Standard is supplied with each lamp
measurement system. Lamp standards are calibrated in our Optical
Calibration Laboratory with standards traceable to national
and Exports Data
up to 5 User Scans for Quick Access
lamps are available for use in more demanding measurements when
the absorption of the test lamp must be considered. Labsphere
recommends the use of an auxiliary lamp for situations where
the physical configuration and characteristics of the test lamps
differ from those of the calibrated lamp. The throughput of
the sphere varies given such differences in lamps, and an auxiliary
lamp corrects for these differences by providing a means of
correcting for lamp absorption.
Spectral Flux Standards are sold in sets of three lamps. The
use of three lamps prolongs the useful life of each lamp since
they may be used interchangeably. The multiple lamp sets allow
the user to check the lamps against each other to verify calibration
data over time. A calibration certificate verifying traceability
to national laboratory standards is provided for each lamp in
Quality of Lamps
- Color Rendering
- LED Bandwidth