| 摘要 |
One of preferred embodiments of a projection type display apparatus comprises a housing including a first surface inclined at an angle of 45 degrees with respect to an optical axis of the incoming light, a second surface, and a third surface. The second and the third surface each have one edge meeting with each other so that the surfaces are joined perpendicularly with each other and another edge meeting respectively side edges of the first surface so that the surfaces are joined with the first surface. On the first surface is adhered by an adhesive a wire gird polarizer; on the second surface perpendicular to an optical axis of the light that has passed through the wire grid polarizer is adhered by the adhesive a reflection type spatial light modulation element; and on the third surface perpendicular to an optical axis of the light reflected by the wire grid polarizer is adhered by the adhesive a transmission type polarizing plate. The adhesive used has a water vapor transmission rate of 17 g/m<SUP>2</SUP>.day or lower.
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