Paul Rudolph (physicist)
Paul Rudolph ( born November 14, 1858 in Kahla, Thuringia, † March 8, 1935 in Nuremberg ) was a German physicist and optician.
He holds a doctorate Rudolph is one of the most important employees of Carl Zeiss and Ernst Abbe. He was before the First World War as a scientist in the former Carl Zeiss company (companies ) in Jena, where he ran for many years the photographic department of the work. There he was instrumental in the development of a number of legendary camera lenses. The first was the Protar (1889 ), the first Anastigmat. An anastigmat corrected important aberrations of astigmatism and was something rather than the also anastigmatic, but easier to be produced Cooke triplet on the market. This was followed by the Planar (1896 ), the Unar (1899 ) and the so-called " eagle eye " of photography, the Tessar (1902 ).
Due to the large commercial success of which he developed for Zeiss lenses Rudolph came through royalties even to some wealth and early 1911 could retire into private life. However, due to inflation, he lost a large part of its assets. After he had worked briefly again at Zeiss, he took in 1920 at the age of 61 years a range of Zeiss competitors Hugo Meyer of Görlitz in Saxony.
He brought one of his preparatory work for Plasmat lens at Meyer -Optik. The Plasmat is a fully corrected defects in color interchangeable lens with the then sensational speed 1:4. Inspired by the needs of the growing film industry, he developed in 1922 (patent filing in the United States 1922) the so-called cinema Plasmat with a light intensity of 1:2. There followed in 1926 a variant of the cinema Plasmat with 1:1.5. This then was the " fastest" lens in the world. Leading film cameras of that time such as the brand Bolex were fitted in the interwar period with Meyer lenses.
A Plasmat 1:2.7 / 70 was the standard lens for the first time in 1933 produced a small format camera ( 3x4). The producer changed its name in 1935 as a small -screen Plasmat Society and from 1935 as Rudolph & Co. of cameras, Berlin.