An integrated laminate structure for a solar cell, comprising; - a first carrier element, such as a piece of plastic or glass, configured as a flat, planar element, - a second carrier element, configured as a planar element, in which a plurality of different surface relief forms of different shapes are configured to form a number of surface relief patterns, a number of said surface relief forms of different shapes of each pattern having flat portions on laminate junction areas between the first and the second carrier elements, by which flat portions the contact surfaces between said first and said second carrier elements are formed, said first carrier element and said second carrier element being composed of an optically substantially transparent material enabling light transmission therethrough, the first carrier element and the second carrier element being laminated together to establish the integrated laminate structure such that the surface relief patterns have been embedded within the established integrated laminate structure, whereby embedded relief patterns comprising a number of related optically functional cavities (408, 410, 412) are formed at an interface established by flat portions provided as contact surfaces between the first carrier element and the second carrier element, wherein, said embedded relief patterns have at least one predetermined optical function relative to incident light selected from an incident light coupling and/or directing function, such as a collimation function, and wherein in addition to the incident light coupling and/or directing function, reflective and generally light trapping functions are achieved by the utilized patterns including cavities, their positioning, alignment and material selections, wherein light traps are formed without reflective mirror surfaces in the carrier material. - a first carrier element, such as a piece of plastic or glass, configured as a flat, planar element, - a second carrier element, configured as a planar element, in which a plurality of different surface relief forms of different shapes are configured to form a number of surface relief patterns, a number of said surface relief forms of different shapes of each pattern having flat portions on laminate junction areas between the first and the second carrier elements, by which flat portions the contact surfaces between said first and said second carrier elements are formed, said first carrier element and said second carrier element being composed of an optically substantially transparent material enabling light transmission therethrough, the first carrier element and the second carrier element being laminated together to establish the integrated laminate structure such that the surface relief patterns have been embedded within the established integrated laminate structure, whereby embedded relief patterns comprising a number of related optically functional cavities (408, 410, 412) are formed at an interface established by flat portions provided as contact surfaces between the first carrier element and the second carrier element, wherein, said embedded relief patterns have at least one predetermined optical function relative to incident light selected from an incident light coupling and/or directing function, such as a collimation function, and wherein in addition to the incident light coupling and/or directing function, reflective and generally light trapping functions are achieved by the utilized patterns including cavities, their positioning, alignment and material selections, wherein light traps are formed without reflective mirror surfaces in the carrier material.