Patent ID: 9470964
Filing Date: 2016-10-18
CPC Classification: G02B,G03B

Claim Text:
1. A projection display apparatus, comprising: a light source; a first lens array in which a plurality of lens cells is two-dimensionally arranged and split light flux emitted from the light source; a second lens array in which a plurality of lens cells corresponding to the plurality of lens cells in the first lens array is two-dimensionally arranged, and on which light emitted from the first lens array is incident; a polarization converting element configured to split indefinite polarized light emitted from the second lens array into first polarized light and second polarized light, and conform the split indefinite polarized light to either the first polarized light or the second polarized light and emit the conformed indefinite polarized light by converting the first polarized light to the second polarized light or converting the second polarized light to the first polarized light; and a drive mechanism configured to linearly displace the polarization converting element in one direction, the one direction being perpendicular to both an incident direction in which the indefinite polarized light is incident and a polarization split direction in the polarization converting element, the polarization split direction being perpendicular to the incident direction, along a surface of the polarization converting element on which the indefinite polarized light is incident.