LMK mobile R

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.

Technical data

Sensor

CMOS Canon 35 mm format

6249 (H) x 4160 (V) Resolution of the image receiver
3132 (H) x 2090 (V) Resolution of the luminance image
14 bit CR3 image files with RGB layer 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 35 mm: 57°(H) x 38°(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 [ 5.1% ]

Focus uncertainty

∆L [ 2.5% ]

Repeatability

∆L [ < 1.3% ]

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®)