| 摘要 |
<p>A projection display device includes: first polarization conversion unit (12) that converts light emitted from a first light source lamp into first polarized light; second polarization conversion unit (23) that converts light emitted from a second light source lamp into second polarized light different from the first polarized light; first lens array (13); second lens array (24); optical path conversion unit (30) that matches the traveling directions of the first polarized light and the second polarized light with each other; third polarization conversion unit (70) that matches the polarizing directions of the first polarized light and the second polarized light emitted from optical path conversion unit (30) with each other; and third lens array (40) into which polarized light emitted from third polarization conversion unit (70) enters. The first light source lamp and the second light source lamp are located so that optical axes thereof can be parallel to each other and away from each other by distance (L) after passage through the optical path conversion unit. Third lens array (40) includes a plurality of lens elements arranged in a matrix, and an arrangement pitch of the lens elements is distance (L).</p> |
