11. Making optical filters requires highly skilled people and a big investment in equipment, he said. 12. :An optical filter isn't going to be 100 %. 13. Spectrophotometers are used to measure the optical filters . 14. One defense against laser dazzlers are narrowband optical filters tuned to the frequency of the laser. 15. This property is used for frequency-selective optical filters , which can alter the color of incident light. 16. Photographic filters are a particular case of optical filters , and much of the material here applies. 17. Optical filters tunable for different wavelengths by varying the magnetic field can be built using ferrofluid emulsion.18. There he oversaw the development and production of the company's micro-electromechanical ( MEM ) Fabry-Perot optical filter . 19. Potential applications of metamaterials are diverse and include optical filters , medical devices, remote shielding structures from earthquakes. 20. For segmentation, optical filters separate the signal into multiple wavelength DSP which generates the desired digital output.
