| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a projector device having a condenser lens group, which has high efficiency of condensing light from a light source. <P>SOLUTION: The projector device 10 is constituted of: the light source 1; a display element 6 having a rectangular display surface 6a; first and second condenser lenses 2 and 3 having a free curved surface 2a, whose refractive power at least at a part of a rotational angle around an optical axis differs from that at the other rotational angle, and which condense the light from the light source 1 and radiate it after making it nearly the same size as the display surface 6a of the display element 6 and also uniformizing its illuminance; and projection lens groups 8 and 9 projecting an image formed on the display element 6. <P>COPYRIGHT: (C)2009,JPO&INPIT |
