A liquid crystal projector device of the present invention includes a lamp
unit, an optical system for separating light emitted from the lamp unit
into light of three primary colors, and an image synthesizer for
generating image light of three primary colors from the light of three
primary colors, and synthesizing the generated image light of three
primary colors into color image light. The image synthesizer includes
three liquid crystal panels for three primary colors and three incidence
polarizing plates arranged at light incidence sides of the liquid crystal
panels. Each of the incidence polarizing plates includes a glass base
material and a polarizing film joined to a surface thereof. The surface
area ratio of the glass base material to the polarizing film is set to
178%.