| 摘要 |
<p>Provided is a double refraction rotatory polarization light source (150). The double refraction rotatory polarization light source (150) has a light source (100) and a polarization light source (100) which has a polarization unit (20) of polarizing the light of the light source (10). The front part (51) and the back part (52) of the double refraction rotatory polarization light source are open in the front part of the polarization light source (100). They are combined by a combination body part (15). A double refraction medium (50) can be rotated in the hollow part (158) of the combination body part (15). Its rotation axis (s) is not parallel to a line (A) which is a light emitting direction of the polarization light source (100) but is vertical. The double refraction rotatory polarization light source (150) emits light to a polarization region (380) comprising the polarization unit.</p> |
