Background
Moritz von Rohr was born in Lonzyn near Hohensalza, then part of the Prussian Grand Duchy of Posen, but now in Poland and known as Łążyn, near Inowrocław.
physicist university professor
Moritz von Rohr was born in Lonzyn near Hohensalza, then part of the Prussian Grand Duchy of Posen, but now in Poland and known as Łążyn, near Inowrocław.
A street in Jena is named after him: Moritz-von-Rohr-Straße, near Carl-Zeiss-Promenade and Otto-Schott-Straßest He obtained a doctorate of philosophy at the University of Berlin in 1892. Von Rohr is usually credited with the design of the first aspheric lenses for eyeglasses.
He invented the eyeglass lens designs that became the Zeiss Punktal lenses.
He also developed a method of computing depth of field from a camera"s entrance pupil location and diameter, without reference to focal length and f-number (see his 1904 and 1906 books). He says, "At this point it will be sufficient to note that all these formulae involve quantities relating exclusively to the entrance-pupil and its position with respect to the object-point, whereas the focal length of the transforming system does not enter into them." T. R. Dallmeyer refers to Von Rohr’s "interpretation" of depth of field in his 1899 book Telephotography.
German Academy of Sciences Leopoldina.