Color sensors are used in displays, LEDs and other tech devices to generate true colors. Their fabrication involves the use of special nanoplasmonic structures. These structures filter the incident light, allowing only precisely defined regions of the color spectrum to reach the detector surface. The ability to control the angle of incidence is decisive to the correct functioning of the color filters. Conventional sensors contain macroscopic elements to improve the filter’s accuracy and avoid untrue colors by masking out light at undesirable angles, but these added elements significantly increase the component’s build size.

Read more at Research News on the website of Fraunhofer-Gesellschaft about “Intelligent inhalation system: Novel color sensors are less expensive to manufacture”.