Design of Refractive Index Test Equipment of High Refractive Index Glass Beads by Secondary Rainbow Method
This paper explains the theory of the secondary rainbow and provides a test method of refractive index of the high refractive index glass beads. We carry out the optical design relate to the method, and design a refractive index test equipment. Additionally, we analyze the calibration requirements of the equipment and discuss the cause of error and measurement accuracy. The designed equipment can achieve a continuous, accurate, statistical measurement.
D. H. Guo et al., "Design of Refractive Index Test Equipment of High Refractive Index Glass Beads by Secondary Rainbow Method", Applied Mechanics and Materials, Vols. 66-68, pp. 1320-1324, 2011