| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a new optical processing device and a condensing optical system used for the optical processing device. <P>SOLUTION: The condensing optical system condensing luminous flux radiated from a minute light radiation part to be two or more dots and/or one or more lines includes: a first collimating lens CL1 arranged so that divergent luminous flux from the minute light radiation part FO may be parallel beams substantially parallel with an optical axis; a second collimating lens CL2 coaxial to the first collimating lens and condensing luminous flux transmitted through the first collimating lens; and a luminous flux changing optical device FT arranged between the first collimating lens and the minute light radiation part and changing the divergent luminous flux from the light radiation part to one or more luminous fluxes crossing the optical axes of the first and the second collimating lenses. At least either the luminous flux changing optical element FT or the second collimating lens can be displaced in the optical axis direction relative to the first collimating lens CL1. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
