发明名称 |
Optical scanning touch panel |
摘要 |
Laser light emitted by a light emitting element is made parallel light by a collimation lens, passes through an aperture of an aperture mirror, and is then angularly scanned in a plane substantially parallel to a display screen by rotation of a polygon mirror and projected onto a recurrence reflection sheet. Then, after the reflected light from the recurrence reflection sheet is reflected by the polygon mirror and aperture mirror, the light is focused by a condenser lens to enter a light receiving element. The aperture mirror has an asymmetrical shape in the scanning direction and/or the vertical direction about the optical axis, according to a scanning surface opening width of the polygon mirror. <IMAGE>
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申请公布号 |
EP1331594(A1) |
申请公布日期 |
2003.07.30 |
申请号 |
EP20030009707 |
申请日期 |
1999.12.03 |
申请人 |
FUJITSU LIMITED |
发明人 |
SANO, SATOSHI;IWAMOTO, YASUHIDE;NAKAZAWA, FUMIHIKO;YAMAGUCHI, NOBUYASU |
分类号 |
G06F3/042;G06F3/033;G06F3/041;(IPC1-7):G06F3/033 |
主分类号 |
G06F3/042 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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