7 CONCENTRATORS FOR PRESCRIBED IRRADIANCE
7.1 INTRODUCTION
Generally speaking, designs in Nonimaging Optics act as transformers of extended ray bundles. The bundle of rays impinging on the surface of the entry aperture of the nonimaging device is called the input bundle and is denoted by Mi. The bundle of rays that exits the surface of the exit aperture of the concentrator is the exit bundle Mo. Collected bundle Mc is the name given to the set made up of the rays common to Mt and Mo, connected to one another by means of the concentrator.
There are two main groups of design problems in Nonimaging Optics. Although both groups have usually been treated separately in the nonimaging literature, there are examples of design problems, such as photovoltaic ...
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