Allgemeine Elektricitäts-Gesellschaft AG (AEG) filed for a patent on the Weitwinkelobjektiv (wide-angle lens), a 5-element, 4-group development of the Hill Sky...
62 KB (6,577 words) - 10:48, 16 May 2024
f/4.5, and f/3.4 lenses. Biogon (II) retrofocus development AEG Weitwinkelobjektiv (1932), from DRP 620,538 Zeiss Sphaerogon by Merté (1935), from US 2...
19 KB (1,908 words) - 21:14, 27 June 2023
Application 1241637, Erhard Glatzel & Hans Schulz, "Dreilinsiges Weitwinkelobjektiv [Three-lens wide-angle lens]", issued 1 June 1967, assigned to Carl...
12 KB (1,362 words) - 10:23, 6 December 2022
granted 25 October 1955. Erhard Glatzel and Hans Schulz, Dreilinsiges Weitwinkelobjektiv. (Triplet Wide-Angle Lens.) West German Patent #1,241,637; granted...
116 KB (16,088 words) - 14:20, 10 April 2024