LIGHT SENSOR ARRANGEMENT AND SPECTROMETER
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United States of America Patent
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Issued Date -
Oct 13, 2016
app pub date -
Oct 16, 2014
filing date -
Nov 13, 2013
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Abstract
A light sensor arrangement comprising a stack having a light sensor, an optical filter, and a mask between the light sensor and the optical filter. In particular, the light sensor comprises a light sensitive surface. The mask comprises an upper opaque base facing away from the light sensitive surface and having first apertures each confining an optical path in the mask, respectively. The mask further comprises a lower opaque base facing the light sensitive surface and having second apertures, each confining the optical path in the mask, respectively. The upper and lower base are made from metal. The optical paths are designed for allowing incident light to reach the light sensitive surface when having an angle of incidence from an allowed interval of angles determined by the size of the first and second apertures and defined with respect to an optical axis of the optical paths, respectively. A spectrometer is shown comprising at least light sensor arrangements of the aforementioned kind.
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