CCD video camera maging photometer TechnoTeam Bildverarbeitung GmbH
CCD video camera photometer

Imaging luminance measuring technique

Contact persons: Dipl.-Ing. Tobias Porsch; Dr.-Ing. Udo Krüger

The imaging analysis of light sources and illuminated scenes is getting more and more important. The complex evaluation of those scenes requires to know the luminance distribution. Solving the necessary measuring tasks by means of measuring devices working point by point either takes an enormous amount of time or is possible only within a coarse raster grid or is not possible at all. Thus, the development of CCD matrix cameras, has enabled the user to solve measuring problems such as measurements for glare evaluation according to the UGR method, the analysis of visibility conditions in the road traffic at night, immission evaluations of glare sources, the determination of contrasts in illumination situations (workplace) or directly on light sources (e.g. lamps/luminaires, displays, night design, indicators).

- measuring of luminous and illuminated surfaces
- determination of luminous and background-lit symbols
- data for simulations in the development of lamps, luminaires and headlamps
- photographing of complex illumination and light distribution situations

Advantages:
- complex evaluation of luminous and illuminated scenes by means of the photograph of an imaging luminance distribution
- simultaneous recording of a big number of connected geometrical data

Resulting data
- luminance distributions in measuring images L(x,y)
- derived lighting-engineering parameters such as illuminance distribution E(x,y) and luminous intensity distribution I(x,y)
- compatible statistical data (e.g. EXCEL®, MatLAB®, LabVIEW®)