OPTICAL SYSTEM WHICH FORMS A SQUARE OPTICAL PATH CAPABLE OF CHANGING AN IRRADIATING POSITION OR IRRADIATING NOT ONLY TO A VERTICAL SIDE BUT ALSO TO THE TOP, BOTTOM, FRONT, AND REAR SIDES OF A SAMPLE BY FORMING A SQUARE OPTICAL PATH USING A OPTICAL SYSTEM AND A METHOD THEREOF

摘要

PURPOSE: An optical system which forms a square optical path and a method thereof are provided to irradiate light not only in vertical direction but also in sides at a fixed angle of a vertical axis and rotatably irradiates light along the vertical axis.;CONSTITUTION: A first sub system(18) forms an optical path to irradiate light to a corresponding site according to the angular variation of light which is entered. A second sub system(19) forms an optical path to irradiate light by controlling the light path length of light which is entered. The optical path is formed so that entire light path length from an object to the second sub system via the first sub system is the same. The object is irradiated or observed at different angles without moving light source on an apparatus which irradiates light to a viewer or the object.;COPYRIGHT KIPO 2011