FRINGE EXAMINING APPARATUS

摘要

The apparatus is for enabling the examination for the interference fringe with the naked eye by magnifying the frequency of the interference fringe. The apparatus comprises: a light source(21); a first beam splitter(22) for splitting the first order beam into the first first-order and the second first-order beams; a first and a second total reflection mirrors(23, 24) for reflecting the first order and the second second-order beams to cross each other at the prescribed place; a second beam splitter(25) for penetrating and reflecting the first second-order beam to divide into the first and the second third-order beams and penetrating and reflecting the second second-order beam to divide into the third and the fourth third-order beams; and a screen(26) for projecting the magnified fringe image.