|Multi-angle measurement can be available by automatic
change of incident and receiving angles. It provides to analyze intensity
distribution of reflected and transmitted light by illuminating the
material, which also can guide optical information of the material
owed itself. GP-200 is an indispensable instrument for the research
of optical appearance. Processing equipments for the calculation,
programs to the graph of the calculation results or several optional
sample stands are available, too.
The beams from the light source are converged onto the pin hole
through the condenser lens, and converted into parallel beams through
the collimator lens. These beams reach the specimen plane through
the beam iris. The beams reflected or transmitted from the specimen
plane are fed to the receptor via a telescope lens and a receiving
iris. Thus, the reflectance, transmittance and diffuse reflectance
of the specimen can be obtained by measuring the light intensity.