Development of linear and area arrays of silicon photodetectors operating in a photon flux integration mode is described. This mode of operation, which permits the trade of gain for band-width, is reviewed. It is possible to obtain full frame storage at commercial TV frame rates from area arrays of silicon phototransistors. Practical integrated structures of both diode and transistor arrays will be shown, and a method of coincidence sampling of an area array of photodetectors, which eliminates the need for isolation by the use of integrated MOST AND gates in the detector array, is described. This structure provides the following advantages. Copyright © 1968 by The Institute of Electrical and Electronics Engineers, Inc.