| 摘要 |
<p>PURPOSE:To provide the polarized light illumination device which can modulates the vibration direction of polarized light without using any optical phase plate and has high light utilization efficiency. CONSTITUTION:The device consists of a light source 1, a light converging means which consists of a reflecting mirror 2 provided behind the light source 1, polarized light separating means 20, 21a, and 21b which separate the light from the light converging means into 1st and 2nd polarized light beams differing in polarizing direction, and a recurrence means 23 which returns the 1st polarized light to the light converging means; and the 1st polarized light from the recurrence means 23 is made obliquely incident on the reflecting mirror 2 of the light converging means and reflected and then the vibration direction of the 1st polarized light is modulated to project the light again.</p> |
