| 摘要 |
According to the present invention, disclosed is a transmission axis measuring device which measures the transmission axis (RX) of a polarizer (10), comprising: a light source (110) to emit incident light parallel in one direction; a polarizing beam splitter (120) arranged on an optical axis line of the incident light to face the light source (110), having a shape of a square; an angle adjusting mechanism (130) arranged below the polarizing beam splitter (120) to horizontally rotate the polarizing beam splitter (120) around a vertical axis (L1) of the polarizing beam splitter (120); a rotation mechanism (140) arranged on the optical axis line to face the polarizing beam splitter (120), having a circumference of the polarizer (10) mounted thereon to fixate a position of the polarizer such that an incidence surface faces the polarizing beam splitter (120) while the polarizer (10) is vertically arranged and vertically rotating the polarizer (10) around the optical axis of the incident light; a focusing lens (150) arranged on the optical axis line to face the rotation mechanism (140) to focus the incident light which has been polarized by being transmitted through the rotation mechanism (140); and a light detector (160) arranged on the optical axis line to face the focusing lens (150), and measuring the intensity of the incident light focused by being transmitted through the focusing lens (150). |
