Mechanical Television Telefunken-Karolus Matrix DisplayWe originally thought this was made by RCA, since the photos came from the Sarnoff library. Paul Lindemeyer identified it as made by Telefunken-Karolus. Below are clips from an Italian dossier on tv dated 1936.
Captions indicate the Telefunken-Karolus system. The left (first) pic is on the ETF page, in hi-res scan. Consider too: Would RCA have built a 100 line matrix display in the early '30s, when doubling their system resolution every year and a half - from 60 to 120 to 240 - and going all out to refine the Kinescope at each step of the way,
Subject in front of light source and scanning disk
Showing the motor that drives the disk
Huge matrix screen
Closeup of screen, showing neon bulbs
The picture it produced Courtesy of Eyes of a Generation
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