A volume diffractive composite is disclosed for providing illumination at a first output angle. The volume diffractive composite comprises a first plurality of grating elements that are mutually spaced from another in a first position with a first spacing period along a first plane, and an actuation unit for changing at least one of the position or the spacing period of the first plurality of grating elements to a second position or spacing period to provide illumination at a second output angle.
申请公布号
WO2004081637(A2)
申请公布日期
2004.09.23
申请号
WO2004US06270
申请日期
2004.03.03
申请人
MASSACHUSETTS INSTITUE OF TECHNOLOGY;BARBASTATHIS, GEORGE;KIM, SANG-GOOK;SHIH, WEI-CHUAN;WONG, CHEE, WEI;JEON, YONG-BAE