LCTR-2005-S
Light Transmittance Meter for Stationary and Mobile Light Transmission Measurement

The LCRT-2005-S is a portable light transmittance meter designed for laboratory based or on site in situ measurement of light (luminous) transmittance in the visible wavelength range. Its hand-held design and compact size allow measurement at the test sample. Profiling a test sample by multiple measurements across the sample is easily performed. An internal camera targeting system supports the alignment of light source and receiver in manual operation. The instrument can also be integrated into stationary optical bench measurement set-ups. For high precision spectral transmittance measurements data two separate diode array spectrometers are built into the unit which simultaneously measure the light source illuminating the test sample (Device Under Test - DUT) and the light output of the DUT to create transmission measurements independent of light source fluctuation and re-reflected light from the DUT. The measurement is done with frequency modulated pulsed light enabling measurement under ambient light conditions. Spectral transmission measurements can be performed covering the whole integrated spectral range from 425 to 705nm or monochromatically with selectable wavelengths between 425 to 705nm and selectable bandwidths down to 1nm. The spectral measurement method enables light transmission measurements with either standard CIE illuminant A or D65 illumination and photometric CIE V(λ) detection simulations. The LCRT-2005-S is suitable for use in process control, incoming inspection as well as in research and development for measurement of the efficiency of antireflection coatings, films, influence of interference effects to transparency, legal conformity of architectural, automotive or aircraft window transmission or for any spectrophotometer application in the visible wavelength range where mobility or compact size is required.