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LS-65-8E

LUMINANCE/RADIANCE STANDARD

Hoffman Engineering's LS-65-8E is a self-contained Calibration Standard for Luminance, Radiance, and Correlated Color Temperature. This microprocessor-controlled instrument offers precise control of luminance from 0 to 2000 footlamberts and correlated color temperature from 1800 to 3100 Kelvins. As with all Hoffman products, this unique design offers N.I.S.T. traceability. Our temperature-stabilized detector array assures high precision in fluctuating ambient environments. The micrometer-driven aperture provides precise linear control of luminance levels without affecting color temperature.

Features:

  • NIST Traceable
  • Self-monitoring luminance readout in FL and cd/m2
  • Radiance calibration from 350 nm to 900 nm, in 5 nm increments
  • Temperature-stabilized detector array
  • 1.75-inch exit port with 0.2% uniformity
  • Removable 2" x 2" filter holder
  • Self-diagnostic for both sphere and controller unit

Applications:

  • Calibration of photometers and radiometers
  • Calibration for Spectral Radiance and Irradiance
  • Source to determine filter transmission and correlated color
  • Determination of Color Corrections when used with proper filters
  • Meets Luminance Standard requirements of MIL-P-7788


 
Product Specifications

Description:


Variable from 0 to 2000 fL at 2856 Kelvins Continuously variable from 1800 to 3100 Kelvins Three Temperature Stabilized Silicon Photodiodes: Red, Blue and CIE Photopic response Sphere self-test capabilities via Blue/Red ratio Multi-range photometer 6 -inch integrating sphere with BaSO4 coating 10-foot cable to console control unit 2" x 2" filter holder with focus and alignment target Multi-functional 32-character LCD display Full 5 digit LCD display, with contrast and brightness variability

Accuracies:
System:   2% over 100 hours operation or 1 year cycle
Stability:   0.1% or 0.01 fL/hour at 23°C
Luminance Uniformity Across Exit Port:   01%

Options:


Chromaticity reference filters Carrying case 220 volt operation
An ISO-9001:2000/AS9100
Rev. B Registered Company