Improvements in groups of lenses which together with a collective group disposed behind it are to serve for producing minutely reduced photographs

摘要

145,023. Zeiss, C., [Firm of]. Aug. 31, 1918, [Convention date]. Lenses.-A group of lenses, which together with a collective group (such as a microscope objective shown in dotted lines) is to serve for taking highly-reduced photographs, consists of two dispersive members separated from one another each consisting of at least two lenses. The group of lenses may also be used in a device acting in the reverse direction for producing highly enlarged photographs or for projection with high magnification. Optical data for a group comprising cemented lenses are given.