Projector

摘要

A projector includes a lighting device that emits light of a plurality of colors, a plurality of vertical alignment mode reflex-type liquid crystal light valves that modulate the color light, a phase difference compensation plate including a C-plate and an O-plate provided between the lighting device and the liquid crystal light valve, a color synthesizing element that synthesizes the color light after modulation, and a projection optical system that projects the synthesized light to a projection target face, and a front side phase difference value of the phase difference compensation plate corresponding to at least one liquid crystal light valve is different from a front side phase difference value of the other liquid crystal light valves.

主权项

1. A projector comprising:
a lighting device that emits light; a plurality of vertical alignment mode reflex-type liquid crystal light valves that are provided in correspondence with each of a plurality of different colors, the plurality of vertical alignment mode reflex-type liquid crystal light valves modulating the light of each of the plurality of different colors in a liquid crystal layer, the plurality of liquid crystal light valves including a red light modulating liquid crystal light valve, a green light modulating liquid crystal light valve, and a blue light modulating liquid crystal light valve; a separate phase difference compensation plate that is provided at a light incident side of each liquid crystal light valve, each phase difference compensation plate including a first phase difference compensation layer having negative uniaxial refractive index anisotropy in which an optical axis is taken along a thickness direction, and a second phase difference compensation layer having biaxial refractive index anisotropy; a color synthesizing optical system that synthesizes the color light modulated by the plurality of liquid crystal light valves; a projection optical system that projects the light synthesized by the color synthesizing optical system, to a projection target face; and a case that is provided with each liquid crystal light valve, each case including a first side having an opening portion, wherein
a front side phase difference value of the phase difference compensation plate corresponding to at least one liquid crystal light valve of the plurality of liquid crystal light valves is different from a front side phase difference value of the phase difference compensation plate corresponding to the other liquid crystal light valves,the first side of the case corresponding to one of the liquid crystal light valves is provided between the one of the liquid crystal light valves and the phase difference compensation plate so as to be parallel to each other,the liquid crystal layer of the one of the liquid crystal light valves is overlapped with the opening portion of the first side of the case, andthe front side phase difference value of the phase difference compensation plate corresponding to the red light modulating liquid crystal light valve is larger than the front side phase difference value of the phase difference compensation plate corresponding to the green light modulating liquid crystal light valve, and the front side phase difference value of the phase difference compensation plate corresponding to the blue light modulating liquid crystal light valve is smaller than the front side phase difference value of the phase difference compensation plate corresponding to the green light modulating liquid crystal light valve.