Bildverarbeitung GmbH COLOUR MEASURING TECHNIQUE

LMK models The centrepiece of the LMK family is the luminance measuring camera type LMK 5, using selected and matched CCD matrix sensors made by Sony®. The current available model types are LMK 5 and the LMK 5 color. The measurement system is compact and the operation of the LMK 5 via Windows OS operated PC is very simple and flexible. The used PC interface works over GigaBit – Ethernet connector. For even more flexible and less stationary applications, the LMK mobile air is available. It is based on high-quality digital singlelens reflex cameras of the Canon EOS series. Thus, the users have...

Introduction The spatially resolved analysis of light sources and illuminated scenes is getting more and more important. The complex evaluation of those scenes requires the knowledge of the luminance distribution within the whole field of view or at least in many selected parts of it. Solving the necessary measuring tasks by point by point measuring either takes an enormous amount of time or is only possible within a coarse raster grid or is not possible at all. Thus, the development of spatially resolved radiation receivers, in particular CCD matrix cameras, has enabled the user to solve measuring...

Imaging measuring of luminances The measurement of luminance distributions L(x,y) allows the complex evaluation of numerous lighting-engineering devices (lamps, luminaires, projectors and light control systems), as well as the evaluation of illumination scenes. The imaging luminance measuring technology allows the acquisition of both photometric parameters and geometrical data, enabling the user to determine further lighting-engineering quantities (luminous intensity, illuminance). For describing lighting-engineering objects, not only simulation data but also various measuring data are necessary:...

Night vision design The dashboard, cockpit and ambient night vision design of the automotive and avionic industry offers manifold applications for the imaging luminance and colour measuring technology. brightness and uniformity of backlit symbol illumination colour, colour rendering and colour shift of functional backlit or ambient illumination brightness, uniformity and contrasts on screens and displays For this purpose, TechnoTeam has designed application adapted software tools for recording and determining low luminances of smallest symbols. Therefore the Symbol object measures the mean luminance...

Outdoor lighting The LMK measuring system is very well suited to make measurements in an urban environment, on public places and spaces, on roadways or any other artificially illuminated infrastructure in order to produce data for checking and maintaining lighting design. checking the luminance, colour rendering and colour shift of large luminous boards and information carriers with regard to their visibility and perceptibility glare evaluation and determination of the visibility distance of lighting installations determination of the luminance distribution according to DIN EN 13201 for roadways...

Measuring headlamps Being the supplier of measuring equipment for a large number of manufacturers of lighting and illumination devices and maintaining close contacts to its scientific environment, the TechnoTeam company has gained experience in handling both lowest and highest luminances, thus is in a position to offer solutions adapted to very special applications. determination of the illuminance distribution on plane surfaces calculation of the luminous intensity distribution of headlamps measurement of the colour scale and colour deviations, e.g. on bright and dark edges in the projected...

Compact measuring station KMP The KMP is a realisation of the principle of the indirect luminous intensity measurement without the need of a specially adapted laboratory room. A measuring object positioned in front of the optical system of the KMP illuminates a reflective wall with Lambertian characteristics, which is placed in the focal plane of the optical system. Thus the reflected luminance distribution or colour distribution can be measured by using the LMK or LMK color, inside the KMP. The optical system of the KMP reduces the measuring distance to less than 1 m while maintaining the observance...

LMK MODELS The application of high-quality digital cameras in the LMK system allows for easy and fast capturing of luminance images. For evaluating the images, the complete functionality of the LMK LabSoft software can also be utilized. CMOS Canon APS-C [ 5566 (H) x 3706 (V) ] effective Pixel [ 2748 (H) x 1834 (V) ] (resolution of the luminance image) [ 14 Bit RAW data with Bayer structure, uncompressed ] Dynamic range Single picture measurement [ SinglePic ] [ 1:4000 (~60 dB) ] High Dynamic measurement [ HighDyn ] [ 1:32000 (1/1250 sec. ≤ ti ≤ 8 sec) ] Data transmission SDHC memory card and/or...

LMK 5 Sensor [ 14 Bit digital, progressive scan ] LMK 5-1 CCD Sony [ ICX 285 AL (2/3") ] effective Pixel [ 1380 (H) x 1030 (V) ] LMK 5-5 CCD Sony [ ICX 655 AL (2/3") ] effective Pixel [ 2448 (H) x 2050 (V) ] Dynamic range Single picture measurement (SinglePic) [ 1:1100 (~61 dB) ] Multi picture measurement (MultiPic;10 pics) [ 1:3600 (~71 dB) ] High Dynamic measurement [ 1:10000000 (~140 dB) ] Data transmission Gigabit Ethernet Interface(GigE®) Metrological specifications The LMK 5 is a digital CCD matrix camera system equipped with a precise analogue electronic system for signal generation. Each...

LMK 5 color Sensor [ 14 Bit digital, progressive scan ] LMK 5-1 color CCD Sony [ ICX 285 AL (2/3") ] effective Pixel [1380 (H) x 1030 (V)] LMK 5-5 color CCD Sony [ ICX 655 AL (2/3") ] effective Pixel [2448 (H) x 2050 (V)] Dynamic range The LMK 5 color is equipped with a filter wheel for colour measurements, adapted to the colour matching functions of the 2° CIE standard observer (CIE 1931). Thus, luminances and additional colour or chromaticity data can be measured. The filter wheel allows a total of 6 full glass filters to be incorporated, with 4 filters being necessary for the colour measurement....