Photometric measurements

The laboratory offers a wide range of tests in the field of lighting technology. Measurements are carried out in a photometric darkroom with dimensions of 12,5 x 4,5 x 7,5 m. The darkroom is equipped with a photometric tunnel that ensures a measurement distance of 25 m. Measurements are performed under the stable temperature conditions required to obtain reliable and reproducible results.

Below, a presentation of the photometric darkroom at the BOSMAL Automotive Research and Development Institute Ltd

(music: www.bensound.com)

Quantities measured

  • spatial distribution of light in geometrical systems C-γ, H-V (B-β),
  • luminous flux,
  • luminance and surface distribution thereof; uniformity and contrast,
  • illuminance,
  • spectral distribution of radiation, light colour,
  • reflective factor,
  • effective light (for flash devices).
Light intensity measurements are performed on a goniophotometer with 0,1 degree resolution, or using a matrix luminance meter and a transmission screen.

Test objects

  • interior and exterior lights of vehicles, fulfilling lighting, signalling, information and decorative functions; other lighting devices,
  • special warning lamps,
  • decorating and reflective material,
  • road marking: road signs, signal lights, warning lights,
  • lighting fixtures, modules and lighting devices with LED light sources,
  • monitors, displays, illuminated advertising.

Norms and regulations

  • ECE Regulations Nos. 3, 4, 6, 7, 23, 27, 38, 69, 70, 87
  • CIE 15.3
  • IES LM 79
  • PN-EN 13032-1+A1:2012
  • PN-EN 13032-4:2015-09
  • IES LM 79-08:2008
  • CIE 13.3:1995
  • CIE 15:2004
  • CIE 015:2018
  • CIE 54.2:2001
  • CIE 63:1984
  • CIE 70:1987
  • CIE 84:1989
  • PN-E-04040-03:1983
  • PN-E-04040-04:1983
  • SAE J1757-1:2015-05
  • PN-EN 12966:2015-03
  • PN-EN 12368:2015-07 p. 8.3
  • PN-EN 12464-1:2012
  • PN-EN 12464-2:2014-05
  • PN-EN 12899-1:2010
  • ASTM D1003:2013
  • PN-EN 12899-3:2010
  • PN-EN ISO 20471:2013-07
  • PN-EN 1150:2001
  • PN-EN 13356:2004
  • PN-EN 13201-4:2016-03
  • PN-EN 1463-1:2009
  • PN-EN 15152:2007
  • PN-EN 60809:2015-07
  • PN-EN 62471:2010
  • IEC TR 62778

Measuring and testing equipment

  • Spectro-Color goniophotometer for measurement in H-V geometry,
  • photometer for measuring flash signals (sampling frequency: 10 kHz),
  • LumiCam 1300 Advanced matrix luminance and colour meter;
  • GL Optic photometric sphere with a diameter of 0,5 m,
  • transmission and reflection screen (dimensions 3 x 2,5 m),
  • Spectro Color stand for measuring the reflection coefficient,
  • spectroradiometers: GL OPTIC Spectis 1.0, Jeti Spectbos 1201,
  • Sonopan RF-100 light meter.
 

Photometric darkroom

Testing range

  • Distribution of light (measurement by grid and isofootcandle maps)
  • Light distribution for flash devices (e.g. special warning lamps)
  • Light colour, spectral analysis of light sources
  • Luminous flux
  • Luminance using a matrix or dot matrix
  • Coefficient of reflection: retro-reflecting devices, road signs and others
  • Measurements of lights and flash signals
  • Colour of materials and products
  • Coefficients of reflection and transmission, haze (wide-angle spread)

Equipment

  • Goniophotometer:
    • Rotation angle: H ± 180°, V ± 90° (±0,01°)
    • Measuring distance: 25 m
    • Maximum load: 40 kg
    • Maximum dimension: 1,2 m
    • Photometer class f'1 ≤ 1,5% (CIE S 023)
 
  • Luminance meter
    • Matrix luminance and color meter
    • Measuring range 0,1 mcd/m² to 10000000 cd/m2
    • Dynamic range 6000000:1
 
  • Photometer for measuring flash signals
    • Measuring range: 0,001 lx to 10 klx
    • Sampling frequency: 10 kHz
 
  • Photometric sphere
    • Diameter 0,5 m
    • spectroradiometer for measuring luminous flux and color
 
  • Stand for measuring the reflection coefficient
    • Viewing angle: 12', 20', 1°, 1°30', 2°
    • Measuring range: 0,1 to 10000 mcd/lx
 
  • Spectrophotometers for measuring colour
    • Measurement geometry (reflection): d/8, 45/0
    • Measurement geometry (transmission): d/0

Measurements of vehicle lamps in a photometric darkroom - photometric darkroom, goniophotometer

Photometric sphere (integrating sphere) closed and open - with light source visible

Positioning of headlights (dipped beam)

Measurements of light and color with a matrix luminance meter

Document No. Title/Description
PN-EN 13032-1+A1:2012 PN-EN 13032-1+A1:2012
PN-EN 13032-4:2015-09
IES LM 79-08:2008 Electrical and Photometric Measurements of Solid-State Lighting Products
CIE 13.3:1995 Method of Measuring and Specifying Colour Rendering Properties of Light Sources
CIE 15:2004 Colorimetry, 3rd Edition
CIE 015:2018 Colorimetry, 4th Edition
CIE 54.2:2001 Retroreflection - Definition and measurement
CIE 63:1984 The spectroradiometric measurement of light sources
CIE 70:1987 The measurement of absolute luminous intensity distributions
CIE 84:1989 The measurement of luminous flux
PN-E-04040-03:1983
PN-E-04040-04:1983
SAE J1757-1:2015-05-07 Standard Metrology for Vehicular Displays
PN-EN 12966:2015-03
PN-EN 12368:2015-07 p. 8.3
PN-EN 12464-1:2012
PN-EN 12464-2:2014-05
PN-EN 12899-1:2010
ASTM D1003:2013 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics
PN-EN 12899-3:2010
PN-EN ISO 20471:2013-07
PN-EN 1150:2001
PN-EN 13356:2004
PN-EN 13201-4:2016-03
PN-EN 1463-1:2009
PN-EN 15152:2007
PN-EN 60809:2015-07
PN-EN 62471:2010
IEC TR 62778 Application of IEC 62471 for the assessment of blue light hazard to light sources and luminaires