| US 7,522,156 B2 | ||
| Optical scanning-type touch panel | ||
| Satoshi Sano, Kawasaki (Japan); Yasuhide Iwamoto, Kawasaki (Japan); Fumihiko Nakazawa, Kawasaki (Japan); and Nobuyasu Yamaguchi, Kawasaki (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Jun. 07, 2001, as Appl. No. 9/875,084. | ||
| Application 09/875084 is a continuation of application No. PCT/JP99/06809, filed on Dec. 03, 1999. | ||
| Claims priority of application No. 11-047233 (JP), filed on Feb. 24, 1999. | ||
| Prior Publication US 2001/0055006 A1, Dec. 27, 2001 | ||
| Int. Cl. G06F 3/042 (2006.01) | ||
| U.S. Cl. 345—175 [345/173; 359/196] | 7 Claims |
| 1. An optical scanning-type touch panel, comprising:
an optical scanning unit for angularly scanning light in a plane substantially parallel to a predetermined region;
a mirrored deflecting unit for deflecting scanning light of said optical scanning unit; and
a light receiving unit for receiving the deflected scanning light, for detecting a scanning light cut-off position, which
is produced in said predetermined region by an indicator, based on a light receiving output of said light receiving unit that
corresponds to a scanning angle,
wherein said deflecting unit has an asymmetrical shape about an optical axis.
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