ISMP-50-R-V01

Measurement of Reflectance

The ISMP-50-R-V01 is designed to perform total reflectance as well as the diffuse reflectance component measurement of flat surface test samples. The regular reflectance component can be calculated by the difference between the measured values.


8/d Measurement Geometry with Substitution Correction

Its design conforms to DIN 5036 T3 for 8/d measurement geometry with 8° sample illumination and integrating sphere to measure reflected light with an almost hemispherical acceptance angle. Measurement errors caused by the self absorption effect of the test sample can be compensated using the substitution correction port.


50cm / 12 in Diameter Integrating Sphere

The complete instrument includes an integrating sphere with accessory components, light source and supporting electronics. The integrating sphere and light source are mounted to a bench top stand for stability and to prevent misalignment during transportation and in use. The sphere itself is 50cm in diameter and includes a measurement port, auxiliary port, illumination port (+8° orientated to sample) and regular reflectance output port (-8° orientated to the sample). The sphere diameter to port size relation is in accordance with DIN 5036 T3 for traceable measurement results.


8° Incident Sample Illumination

A collimated light source employing a halogen tungsten lamp operated at the color temperature of 2896 K (standard illuminant A) is used for precise sample illumination. The lamp is operated in constant current mode for best stability.


Spring Loaded Sample Holder

Both the measurement and auxiliary port include a spring loaded sample holder for positioning the test sample at the reference plane on the port. The electronics include a sophisticated lightmeter/controller with photometric detector mounted onto the sphere and light source power supply. The meter/controller supports the substitution correction measurement routine, the calibration routine and displays the light reflectance measurement values in percent as well as remote control of the power supply.


Diffuse Spectral Reflectance Calibration Standards

For measurement applications involving samples with diffuse reflection characteristics Gigahertz-Optik offers a diffuse reflection calibration standard model BN-R98-D2C-PP. Calibration of the diffuse calibration standard is traceable to NRC. For non-diffuse test samples (flat surface mirrors) the BN-RM95-50C-PP mirror type reflectance calibration standard is available with calibration traceable to PTB. Both standards are supplied in a housing with locating pins on the rear side which fit into holes on the sample holder.

Product Pictures

Specifications

Purchasing Information

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