The Microcomputerization of A Microphotometer of MΦ4 Type

In this present article, microcomputerization of a MΦ4 microphotometer is introduced, which can be used to measure the transparency and optical density of negatives speedily and automatically, and to process the data so that one can obtain the radiant intensity, line profile, equivalent breadth, etc., directly. The instrument has come up to the level of the 3CS microphotometer, which was made in Englang in the late seventies, in the measuring accuracy, work efficiency and performance.