Patent ID: 6985198

Claim:
A projection type optical display system comprising: a light source; at least one liquid crystal panel for modulating light that has been emitted from the light source; and a projection optical device for projecting the light that has gone out of the at least one liquid crystal panel, wherein the liquid crystal panel includes: a liquid crystal layer; a first polarizer and a second polarizer, which are provided on the light incoming side and the light outgoing side of the liquid crystal layer, respectively; a first uniaxial optical compensator, which is provided between the liquid crystal layer and the first polarizer; a first biaxial optical compensator, which is provided between the first uniaxial optical compensator and the first polarizer; and a second biaxial optical compensator, which is provided between the liquid crystal layer and the second polarizer, wherein if an index ellipsoid of the first and second biaxial optical compensator has a, b and a axes as principal axes and if principal refractive indices on the a, b and a axes are na, nb and no, respectively, the c axis is substantially parallel to a normal to a major surface of each said biaxial optical compensator, the a and b axes are defined on the major surface of the biaxial optical compensator, and nb>nc>na is satisfied.