BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic optical sectional view of a projector (Example 1) according to the present invention;
FIG. 2 is a schematic optical sectional view mainly showing a projection optical system unit included in the projector of FIG. 1;
FIG. 3 is a schematic perspective view of the projector;
FIG. 4 is a perspective view of global coordinates;
FIG. 5 is a spot diagram in the projector of Example 1;
FIG. 6 is a distortion diagram in the projector of Example 1;
FIG. 7 is an explanatory diagram showing θ1 to θ3 in the projector of Example 1;
FIG. 8 is a schematic optical sectional view of a projector of Example 2;
FIG. 9 is a schematic optical sectional view mainly showing a projection optical system unit included in the projector of FIG. 8;
FIG. 10 is a spot diagram in the projector of Example 2;
FIG. 11 is a distortion diagram in the projector of Example 2;
FIG. 12 is an explanatory diagram showing θ1 to θ3 in the projector of Example 2;
FIG. 13 is a schematic optical sectional view of a projector of Example 3;
FIG. 14 is a schematic optical sectional diagram mainly showing a projection optical system unit included in the projector of FIG. 13;
FIG. 15 is a spot diagram in the projector of Example 3.
FIG. 16 is a distortion diagram in the projector of Example 3;
FIG. 17 is an explanatory diagram showing θ1 to θ3 in the projector of Example 3; and
FIG. 18 is a schematic perspective view of a projector provided with an optical path change element.
Patent Application
20070195290
