Luminance measurement photometer LMK mobile air

for light measurementCMOSportable

The application of high-quality digital cameras in the LMK-system allows an easy and fast capture of luminance images. For evaluating the images, the complete functionality of the LMK LabSoft software can also be utilized. CMOS Canon APS-C imaging sensor 5566(H) x 3706(V) 2748(H) x 1834(V) effective pixel (resolution of the luminance image) 14 Bit RAW data with Bayer structure, uncompressed Dynamic range: Single picture measurement (SinglePic) [ 1:4000 ] High Dynamic measurement (AEB) [ 1:30000 (1/1000 sec. < ti < 8 sec.) ] Data interface: USB 3.0/Wi-Fi and/or SD/SDHC memory card Focal Length / Visual field angle: Focal length 17mm: 65°(H) x 45°(V) Focal length 50mm: 28°(H) x 19°(V) Selection of measuring range Selecting aperture, exposure time and ISO speed Metrological specification Spectral matching Numerical transformation of R,G,B - sensor data Calibration uncertainty ∆L [ 2.5% ] Uniformity ∆L [ < 2% ] Restrictions Can not be used for measuring coloured light sources (i.e. LED) Limited use for measuring modulated light source with a high depth of modulation Result data Luminance distributions in measuring images L(x,y) Statistical data for being used in calculation programs (z.B. EXCEL®, MatLAB®, LabVIEW®)