| Sylvania REDBLUE 13-27681-4 Photomultiplier Tube | |
| Written by AnubisTTP on 2023-01-30 |
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The Sylvania 13-27681-4 REDBLUE is a rather nondescript circular cage photomultipler designed exclusively for use in Sylvania flying spot scanners. A flying spot scanner is a type of early optical imaging system, which uses a beam projected from a high brightness CRT to scan slides and film. The light from this beam was split into separate color channels and directed onto a set of three photomultiplier tubes to generate a RGB brightness signal for each line of the scanned image. Sylvania binned specific photomutiplier tubes for sensitivity to the RGB spectrum for use in this scanning process. The 13-27681-4 REDBLUE has been graded for use on the red and blue channels.
The Sylvania REDBLUE 13-27681-4 is a specialized photomultiplier tube designed exclusively for use in Sylvania flying spot scanners.
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