Interference filter
Videos
An interference filter, dichroic filter, or thin-film filter is an optical filter that reflects some wavelengths of light and transmits others, with almost no absorption for all wavelengths of interes
Band-pass interference filter for laser experiments
Dichroic filters
Six-segment dichroic color wheel from a DLP projector. Segments transmit red, green and blue, and therefore reflect cyan, magenta, and yellow.
Color gel
Videos
A color gel or color filter, also known as lighting gel or simply gel, is a transparent colored material that is used in theater, event production, photography, videography and cinematography to color
Interference filter
…achieving extremely high laser damage thresholds, and are used for all the mirrors on the world's most powerful laser, the National Ignition Facility. Color gel Dielectric mirror…
Many color gels organized, some in gel heads
A motorized color gel