| CPC H02S 40/22 (2014.12) [G02B 3/0006 (2013.01); G02B 3/12 (2013.01)] | 23 Claims |
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1. An optical structure comprising:
an entirely flat, planar base element disposed between photovoltaic cells in a solar photovoltaic panel so that the optical structure is disposed between the photovoltaic cells in the solar photovoltaic panel; and
an at least one flat, planar carrier element provided with a plurality of geometrically and optically asymmetric open cavities with asymmetric cavity profiles arranged into an at least one pattern, the open cavities comprising grating structures,
wherein the carrier element(s) and the pattern(s) are substantially optically transparent,
wherein said at least one carrier element is laminated together with a base element such, that an at least one embedded, optically functional cavity pattern is established at an interface between said elements,
each said embedded, optically functional cavity pattern and/or each said carrier element comprising the asymmetric cavity profiles,
wherein the optical structure is rendered optically functional by adjusting the asymmetric cavity profiles within each said embedded, optically functional cavity pattern and/or within each said carrier element, wherein an optical function is selected from light reflection, light refraction and light redirection,
wherein the embedded, optically functional cavity pattern is based on a periodical arrangement of the grating structures of the open cavities, and
wherein the embedded, optically functional cavity pattern is configured to provide asymmetric light reflection, light refraction, or light redirection performance in a single direction based on the position of said optical structure in relation of the photovoltaic cells in the solar photovoltaic panel.
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