Projector

A projector comprising:

• a lighting device that emits light that includes a first color and a second color;
• a first liquid crystal light valve that modulates the first color;
• a second liquid crystal light valve that modulates the second color;
• and
• a color synthesizing optical system that superimposes the first color and the second color modulated by the first liquid crystal light valve and the second liquid crystal light valve, respectively,
• wherein refractive index anisotropy of liquid crystal of the first liquid crystal light valve is smaller than refractive index anisotropy of liquid crystal of the second liquid crystal light valve, and an alignment state of liquid crystal at the time of applying a maximum gradation voltage is substantially the same in the first liquid crystal light valve and the second liquid crystal light valve, and
• a liquid crystal material of the first liquid crystal light valve is different than a liquid crystal material of the second liquid crystal light valve.

A projector comprising:

• a lighting device that emits that includes a first color and a second color;
• a first liquid crystal light valve that modulates the first color;
• a second liquid crystal light valve that modulates the second color;
• and
• a color synthesizing optical system that superimposes the first color and the second color modulated by the first liquid crystal light valve and the second liquid crystal light valve, respectively,
• wherein a pre-tilt angle of liquid crystal molecules of the first liquid crystal light valve is smaller than a pre-tilt angle of liquid crystal molecules of the second liquid crystal light valve, and an alignment state of liquid crystal at the time of applying a maximum gradation voltage is substantially the same in the first liquid crystal light valve and the second liquid crystal light valve.

A projector comprising:

• a lighting device that emits light that includes a first color and a second color;
• a first liquid crystal light valve that modulates the first color;
• a second liquid crystal light valve that modulates the second color;
• and
• a color synthesizing optical system that superimposes the first color and the second color modulated by the first liquid crystal light valve and the second liquid crystal light valve, respectively,
• wherein the first liquid crystal light valve has a first insulating film that is formed between a liquid crystal layer of the first liquid crystal light valve and a pixel electrode of the first liquid crystal light valve,
• the second liquid crystal light valve has a second insulating film that is formed between a liquid crystal layer of the second liquid crystal light valve and a pixel electrode of the second liquid crystal light valve,
• a film thickness of the first insulating film is smaller than a film thickness of the second insulating film, and
• an alignment state of liquid crystal at the time of applying a maximum gradation voltage is substantially the same in the first liquid crystal light valve and the second liquid crystal light valve.