| US 7,564,608 B2 | ||
| Raster scanning-type display device using diffractive light modulator | ||
| Sang Kyeong Yun, Suwon-si (Korea, Republic of) | ||
| Assigned to Samsung Electro-Mechanics Co., Ltd., Suwon-si (Korea, Republic of) | ||
| Filed on Dec. 19, 2006, as Appl. No. 11/642,447. | ||
| Claims priority of application No. 10-2005-0133758 (KR), filed on Dec. 29, 2005. | ||
| Prior Publication US 2007/0153270 A1, Jul. 05, 2007 | ||
| Int. Cl. G02B 26/08 (2006.01) | ||
| U.S. Cl. 359—202.1 [359/201.1; 359/201.2; 359/204.2; 359/618; 353/34] | 7 Claims |
| 1. A raster scanning-type display device, comprising:
a plurality of light sources for emitting a plurality of beams of light having respective colors;
a diffractive light modulator comprising a plurality of elements with colors respectively assigned to the elements, and configured
to modulate incident light while moving the elements according to external control signals and then to emit a plurality of
beams of light having respective colors and each having a plurality of diffraction orders when the incident light having a
plurality of colors is incident on corresponding elements;
a plurality of illumination optical units for radiating the plurality of beams of light having respective colors, emitted
from the light sources, onto the corresponding elements of the diffractive light modulator;
a combining unit for combining the plurality of beams of light having respective colors and each having a plurality of diffraction
orders, formed by the diffractive light modulator, together;
a Schlieren optical unit for selecting diffracted light having one or more desired diffraction orders from the plurality of
beams of light having respective colors and each having a plurality of diffraction orders, and passing the selected diffracted
light therethrough; and
a scanning optical unit for scanning the diffracted light, passed through the Schlieren optical unit, onto a screen in a raster
scanning fashion.
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