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Diffraction Grating Film


diffraction grating films with 1000 lines/mm Project laser beams through the grating film, the single light source will be diffracted into several sub light source, with equal distance ( angle ) in between them.

Theorem behind it : Diffraction can create “rainbow” colors when illuminated by a wide spectrum (e.g., continuous) light source. This phenomenon is caused by the interference effects in reflections from the closely spaced transmissive layers. A grating has parallel lines, while a CD has a spiral of finely-spaced data tracks. Diffraction colors also appear when one looks at a bright point source through a translucent fine-pitch umbrella-fabric covering. Decorative patterned plastic films based on reflective grating patches are very inexpensive, and are commonplace.

For more Information please visit the wiki page





Demo room information

Location B4
Maker Unknown
Current State Working
demonstrations/6_optics/6c_diffraction/diffraction_grating_film/start.txt · Last modified: 2020/03/13 20:33 by demoroom