<p>A solid state light source includes an LED die that generates light of two polarization states. A medium is provided at or near an emitting surface of the LED die that preferentially reflects one polarization state back into the LED die and preferentially transmits the other polarization state out of the LED die, thus providing a solid state light source whose light output is at least partially polarized. Recycling of light within the LED die together with polarization conversion mechanisms can enhance efficiency and brightness of the polarized output.</p>
申请公布号
EP1805811(A1)
申请公布日期
2007.07.11
申请号
EP20050801187
申请日期
2005.09.23
申请人
3M INNOVATIVE PROPERTIES COMPANY
发明人
WHEATLEY, JOHN A.;LEATHERDALE, CATHERINE A.;OUDERKIRK, ANDREW J.