Patent ID: 9470396
Filing Date: 2016-10-18
CPC Classification: F21V,G02B,H01L,Y02E,Y02P

Claim Text:
1. A directive optical device, comprising: an optically active material having a first side and a second side and being capable of converting between an electrical voltage and light at a wavelength; a first electrical contact in electrical communication with the optically active material proximate to the first side, the first electrical contact being reflective at the wavelength; a second electrical contact in electrical communication with the optically active material proximate to the second side, wherein the second electrical contact is transparent at the wavelength; a partially reflective grating disposed proximate to the second electrical contact, wherein the partially reflective grating comprises a periodic array of alternating optically reflective and non-reflective regions, wherein the partially reflective grating includes a plurality of non-conductive apertures within a conductive sheet; and a spacer disposed between, and in electrical communication with, the optically active material and the partially reflective grating, the spacer comprising a material that is transparent to the wavelength, wherein the first electrical contact is positioned on the first side of the optically active material and the second electrical contact is positioned on the second side of the optically active material, and wherein the partially reflective grating is spaced away from the optically active material by an optical distance of substantially an odd multiple of one quarter of the wavelength.