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Ellipsoidal reflectors have two conjugate foci. When a light source is placed the focal point at the end, all rays of the light that
strike the reflecotr will be diverted through the second focal point. The result is that an enormous percentage of the light from
the source is directed in a manner that makes it easily usable. These reflectors are coated with dichroic coating. Substrate is glass. Typical applications are film projectors, stage lighting, digital camera, medical instrument, overhead projectors, lighting ect. |