Light meter ISMP-50-R-V01

ISM-50-R-V01 measurement device for light reflection as per DIN-5036 T3 Light reflectance measurement in 8/d geometry The ISM-50-R-V01 integrating sphere light meter is used for measurement of light reflectance, the degree of the scattered reflectance and calculation of the regular reflectance proportion. Sample illumination is done from an 8° angle. The regular or scattered reflected light from the sample is captured by the integrated sphere. This 8/d geometry corresponds to the specifications in DIN 5036 section 3. the light source is set to a 2856 K color temperature (standard illuminant type A). The high-quality silicon photodiode of the photometric detector is carefully matched onto the V(λ) responsivity function through a multi-layer spectral correction filter. Integrating sphere with a 50cm diameter Integrating spheres with a large diameter such as the ISM-50-R offer a wide detection angle for scattered reflected light. The measurement ports are additionally designed with knife-edges. The sphere is coated with Gigahertz-Optik‘s self-manufactured diffusely reflective coating made of barium sulfate. The multi-layered coating ensures magnificent levels of diffuse reflection over the entire usable spectral range. Correction of self-absorption effects by the samples The integrating sphere has two measurement ports onto which samples and reflection standards can be interchangeably placed. Self-absorption effects by the samples and calibration standards can thereby be compensated. The sample holders are attached onto the socket in the sphere and enable measurement of extensive samples.