Photometry Equipment


Integrating Sphere System

  • A system to measure the spectral properties, light efficiency
  • Luminous flux radiate from a central position of the light source on the inner surface
  • Real time measure of lamp stability and statistical analysis

standard metric

  • CIE 84
  • IESNA LM79

Test Results

  1. Test Temperature (˚C)
  2. Burning Time (min)
  3. Burning Attitude (Orientation)
  4. Input Power (Voltage, Current, Power)
  5.  Total Lumen (lm)
  6.  Efficiency (lm/W)
  7. Relative Spectral Energy Distribution Diagram
  8. Relative Spectral Energy Data
  9. Color Coordinates (x, y)
  10. CIE 1931 Chromaticity Diagram
  11. Correlated Color Temperature (K)
  12. CRI (Color Rendering Index, Ra)
  13. Special Color Rendering Indices (R1 ~ R15, Rt)
  14. Color Rendering Group
  15. Color Appearance Group
  16. IESNA Zonal Cavity Coefficient table
  17. CIBSE TM5 Utilizatin factor table
  18. Roadway Utilization factor diagram with table export
  19. CIBSE LG3 rating (glare control for VDUs)
  20. UGR Table
  21. IESNA Roadway : Type I/II/III/IV and Short/Medium/Long
  22. Colorimetric Purity (%)
  23. SDCM (Standard Deviation of Color Matching) : McAdam Ellipse step calculation
  24. ANSI C78.377-2011 Color System

Mirror Type Goniophotometer

  • Rotating luminaire or light source around the optical axis and reflecting emitted light to mirror to measure the spectral properties and luminous intensity via sensor
  • Set burning position to the same as actual installation of luminaire
  • CIE and IESNA LM79 Stabilization Method applied for stabilization evaluation of light source
  • Measurement Integration Time autoconfiguation
  • Measure in conformity with NEMA Classification

standard metric

  • CIE 43, 69, 70, 84, 121, 127
  • IESNA LM31, LM35, LM41, LM42, LM46, LM79

Test Results

  1. Beam angle / Field angle
  2. LID diagram : Polar curve, H-V Plot
  3. 10% LID diagram : Polar curve, H-V Plot
  4. Cone Intensity Distribution diagram
  5. Luminous Intensity Data table
  6. IsoCandela diagrams
  7. ConeLux Levels
  8. IsoLux diagrams
  9. 3D web format for IsoLux and IsoCandela diagrams
  10. Luminance table
  11.  Cone Luminance Distribution diagram
  12. Luminous flux summary table
  13. Zonal flux diagram
  14. Lumen Pie Chart
  15. Luminance Limiting Curve (glare rating)
  16. IESNA Zonal Cavity Coefficient table
  17. CIBSE TM5 Utilizatin factor table
  18. Roadway Utilization factor diagram with table export
  19. CIBSE LG3 rating (glare control for VDUs)
  20. UGR Table
  21. IESNA Roadway : Type I/II/III/IV and Short/Medium/Long
  22. Photometric Solid with azimuth angle offset
  23. LM79 Test Report software
    1. Weighted Average (x, y) data
    2. Weighted Average (u, v) data
    3. Weighted Average CCT data
    4. Maximum Delta u’v’
    5. xy, u’v’ distribution chart at CIE1931 chromaticity diagram