A Vis-Spectrophotometer with a new Topology of Nanophotonic Diffraction Grating



This paper presents a new topology for photonic crystals to replace the monochromator, introducing them with a new

alignment  (the so-called extended Trinitron) to guide the chromatic pattern producing a spatial distribution similar to that of

conventional diffraction gratings. The spectrophotometer uses a LED white light as light source instead of cameras

with halogen lamps and mirrors. The system was designed using actual data from the manufacturer of photonic crystals

and the total system response is compared against that one of a conventional spectrophotometer with a LED white light

or tungsten bulb as a light source. It is shown that the spectral responses are similar in photonic panels containing

more than twenty elements.