04180702 is referenced by 22 patents and cites 3 patents.

A photo electric light detection device comprising an array of photodiodes is disposed at an end face of a light conducting rod in order to produce an output signal proportional to light incident on the surface of the rod and transmitted to the end face by total internal reflection. The array of photodiodes is subdivided into high and low pass frequency sub-arrays and the output signals from the sub-arrays are summed and processed to compensate for stray light. The device is useful in connection with a line scanner for detecting anomalies in a moving band.

Title
Photo electric light detection devices
Application Number
5/853889
Publication Number
4180702
Application Date
November 22, 1977
Publication Date
December 25, 1979
Inventor
Heinz Henneberger
Stockdorf
DE
Klaus Hartmann
Munich
DE
Erwin Sick
Icking
DE
Assignee
Erwin Sick Gesellschaft mit beschrankter Haftung Optik Elektronik
DE
IPC
G02B 5/14
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