Abstract
The origin of the name of Oscar type lens polishing machines has been investigated. Although there were lots of the explanations of lens polishing machines in the technical books, so far, we had not met the origin of "Oscar"- name machine. When rearranging the books, journals and documents on the shelf about one year ago, an old Japanese textbook (1952) was found out by chance, which was mimeographed copy and having a faded photograph of Oscar-name machine. The machine seemed to be made in Germany, according to the decipherment of painted letters. And then the company name "Oscar Ahlberndt Maschinenfabrik fur Optik" was found in German handbook (1938) owned by the Library of AIST and in Japanese report of the inspection tour in the J. of JSPE(1936).
