UPS 300 Horiba Optical Mirror

The HunterLab ColorQuest II Color Measurement Spectrophotometer can measure either reflected or transmitted color of a product. The integrating sphere is a chamber six inches in diameter coated with barium sulfate (BaSO₄), which difuses the light from the lamp. The light illuminates the sample and is either reflected from it or transmitted through it. A lens is located at an angle of 8° from the perpendicular to the sample surface. The lens collects the reflected or transmitted light and directs it to a diffraction grating. The grating then disperses the light into its component wavelengths. This dispersed light is reflected onto a 32-element silicon diode array which measures the light every 10 nanometers (nm) across the spectrum of 400 nm to 710 nm. The signals from the diode array are amplified using laser-trimmed operational amplifiers and processed by a 16-bit analog-to-digital converter. The computer receives the converted data and manipulates it to produce the information needed for display by the software.