| CPC F21S 41/645 (2018.01) [F21S 41/147 (2018.01); F21S 41/25 (2018.01); F21S 41/365 (2018.01)] | 12 Claims |
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1. A vehicular lamp comprising:
a light source;
a liquid crystal element configured to variably modulate a polarized state of light emitted from the light source;
a condensing optical system configured to condense the light emitted from the light source toward the liquid crystal element;
a polarization beam splitter configured to transmit first light constituted by one polarized component of the light condensed by the condensing optical system toward the liquid crystal element and to reflect second light constituted by other polarized component;
a reflecting condensing optical system configured to reflect and condense the second light reflected by the polarization beam splitter toward the liquid crystal element; and
a polarization rotation element that is disposed only in one of the optical path of the second light from the reflecting condensing optical system toward the polarization beam splitter and the optical path of the second light from the polarization beam splitter toward the reflecting condensing optical system and that is configured to rotate a polarization direction of the second light to coincide with a polarization direction of the first light,
wherein the first light and the second light condensed toward the liquid crystal element are condensed at a first condensing point in common and the liquid crystal element is located at the first condensing point, and
the second light reflected by the polarization beam splitter is condensed at a second condensing point deviated from the optical path of the light from the condensing optical system toward the polarization beam splitter and the optical path of the second light from the reflecting condensing optical system toward the polarization beam splitter.
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