发明名称 |
OPTICAL SYSTEM FOR LONG DISTANCE TRANSMISSION, AND SCAN LENS FOR LONG DISTANCE TRANSMISSION |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical system for long distance transmission in which beams are projected on an object through a long transmission system by scanning the beams in the initial stage of the transmission system, and a lens therefor. <P>SOLUTION: The optical system for long distance transmission comprises a laser beam source, a plurality of galvano mirrors for scanning laser beams in a two-dimensional (or one-directional) manner, a scan lens comprising a relay lens L<SB>1</SB>provided in an optical path behind the galvano mirrors to once condense the laser beams and a collimate lens L<SB>2</SB>to correct the condensed laser beams to parallel beams while the distance between the lenses L<SB>1</SB>and L<SB>2</SB>is set to be the sum (f<SB>1</SB>+f<SB>2</SB>) of the focal length f<SB>1</SB>and f<SB>2</SB>of the lenses L<SB>1</SB>and L<SB>2</SB>, and a plurality of guide pipes to surround the beams, and the distanceΓfrom the galvano mirrors to the object is set to be larger than 2(f<SB>1</SB>+f<SB>2</SB>). <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
申请公布号 |
JP2005177825(A) |
申请公布日期 |
2005.07.07 |
申请号 |
JP20030424199 |
申请日期 |
2003.12.22 |
申请人 |
SUMITOMO ELECTRIC HARDMETAL CORP |
发明人 |
IMAMURA HIDEAKI;FUSE TAKASHI;MUTO SHINICHIRO |
分类号 |
G02B13/00;B23K26/06;B23K26/08;(IPC1-7):B23K26/08 |
主分类号 |
G02B13/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|