UL 62108-2017 pdf download – Concentrator Photovoltaic (CPV) Modules and Assemblies – Design Qualification and Type Approval.
3.2 concentrator cell basic photovoltaic device that is used under the illumination of concentrated sunlight 3.3 concentrator optics optical device that performs one or more of the following functions from its input to output: increasing the light intensity, filtering the spectrum, modifying light intensity distribution, or changing light direction. Typically, it is a lens or a mirror Note 1 to entry: A primary optics receives unconcentrated sunlight directly from the sun. A secondary optics receives concentrated or modified sunlight from another optical device, such as primary optics or another secondary optics. 3.4 concentrator receiver group of one or more concentrator cells and secondary optics (if present) that accepts concentrated sunlight and incorporates the means for thermal and electric energy transfer. A receiver could be made of several sub-receivers. The sub-receiver is a physically stand-alone, smaller portion of the full-size receiver 3.5 concentrator module group of receivers, optics, and other related components, such as interconnection and mounting, that accepts unconcentrated sunlight. All above components are usually prefabricated as one unit, and the focus point is not field adjustable Note 1 to entry: A module could be made of several sub-modules. The sub-module is a physically stand-alone, smaller portion of the full-size module. 3.6 concentrator assembly group of receivers, optics, and other related components, such as interconnection and mounting, that accepts unconcentrated sunlight. All above components would usually be shipped separately and need some field installation, and the focus point is field adjustable Note 1 to entry: An assembly could be made of several sub-assemblies. The sub-assembly is a physically standalone, smaller portion of the full-size assembly. 3.7 control unit hardware that is not stressed, but is included in each measurement to enable greater confidence in consistent measurements 4 Sampling Figures from Figures 1 to 5 are schematics of cells, receivers, modules.