In what year was the inventor of the Abbe prism born?
Abbe prism In optics, an Abbe prism, named for its inventor, the German physicist Ernst Abbe, is a type of "constant deviation dispersive prism" similar to a Pellin–Broca prism.
Auguste-Savinien Leblond Auguste-Savinien Leblond d'Olblen (19 October 1760 – 22 February 1811) was a French mathematician. In 1790 he coined the name "metre" for the unit of length.