| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a converging method for efficiently converging light emitted from a light source like a line and thereby improving illuminance on a medium to be irradiated. <P>SOLUTION: In the converging method, a linear light source 12 extended along the axial direction of a elliptic cylinder so as to irradiate a reflection surface 111 having at least one of shapes in the peripheral direction of the inner periphery S of the elliptic cylinder with light from one focal position F<SB>1</SB>of the inner periphery S or its vicinity. <P>COPYRIGHT: (C)2003,JPO</p> |
