Colorimeter for true colour measurement

摘要

The photocell assembly has a casing (3) with a window (31) at the front with an IR-filter (32). A sensor chip (1) is mounted on a substrate and has three different photocells (11) or groups of photocells with interference filters (2) giving sensitivity to three different wavelengths of light. There are three different contact pins (4), each with contacts to one of the different photocells.