Patent ID: 7717573

Claim:
A projection display apparatus comprising: a light source; an image forming device for modulating light emitted from said light source with an image signal supplied thereto; and a reflective optical system for magnifying and projecting an image generated by said image forming device, said reflective optical system comprising: a first reflecting mirror for reflecting light emitted from said image forming device and initially applied thereto; and a plurality of reflecting mirrors for successively reflecting the light reflected by said first reflecting mirror, wherein said first reflecting mirror has a spherical reflecting surface, and said image forming device is inclined with respect to the first reflecting mirror such that a distance between the first reflecting mirror and an upper side of the image forming device is less than a distance between the first reflecting mirror and the lower side of the image forming device, and such that a normal line passing through the crest of said spherical reflecting surface and a normal line passing through said image forming device extend nonparallel to each other.