| US 7,593,151 B2 | ||
| Display unit and scanning method therefor | ||
| Toshifumi Yokoyama, Osaka (Japan); Ken'ichi Kasazumi, Osaka (Japan); Akihiro Morikawa, Osaka (Japan); Kiminori Mizuuchi, Osaka (Japan); and Kazuhisa Yamamoto, Osaka (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Appl. No. 10/582,340 PCT Filed Dec. 09, 2004, PCT No. PCT/JP2004/018362 § 371(c)(1), (2), (4) Date Jun. 09, 2006, PCT Pub. No. WO2005/057269, PCT Pub. Date Jun. 23, 2005. |
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| Claims priority of application No. 2003-412125 (JP), filed on Dec. 10, 2003. | ||
| Prior Publication US 2007/0081220 A1, Apr. 12, 2007 | ||
| Int. Cl. G02B 26/08 (2006.01) | ||
| U.S. Cl. 359—216.1 [359/201.1; 359/201.2; 359/202.1; 359/204.1; 359/204.2; 359/204.4; 359/208.2; 359/217.2; 359/315; 359/900] | 16 Claims |
| 1. A display unit having a coherent light scanning system for scanning coherent light, and projecting the coherent light onto
a screen, said coherent light scanning system comprising:
a coherent light generator for receiving a coherent light generation signal and for outputting coherent light;
a polygon mirror for receiving the coherent light from the coherent light generator and for reflecting the coherent light
to be projected on the screen; and
an optical path formation part for receiving the coherent light from the polygon mirror and transmitting the coherent light
onto the screen, such that each reflection plane of the polygon mirror corresponds to multiple scans of coherent light on
the screen and at least one change in a scanning direction of the coherent light on the screen during each rotation of the
polygon mirror,
wherein the scanning direction of coherent light on the screen changes corresponding to an angle of the polygon mirror relative
to the coherent light received at the polygon mirror, and
the coherent light generator signal corresponds to a string of data, the string of data being read in a first direction corresponding
to a first scan direction of coherent light on the screen, and being read in a reverse direction corresponding to a second
scan direction of coherent light on the screen.
|