| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a projector that is equipped with an optical device including a phase difference plate, or the like, that has high reliability and ample strength and can relatively easily form birefringence. <P>SOLUTION: The optical compensator plate 85 functions as a negative uniaxial birefringent material as a whole, by using negative uniaxiality remaining, after negative uniaxiality of the first flat plate 86 is offset by positive uniaxiality of the second flat plate 87. In other words, the optical compensator plate 85 has negative uniaxial birefringence as a pseudo-refractive index. <P>COPYRIGHT: (C)2008,JPO&INPIT |
