Ellipsoidal Reflector Spotlight
Post date: Oct 19, 2015 2:22:51 PM
The ellipsoidal reflector spotlight combines an ellipsoidal reflector usually with either one step lens or two plano-convex lenses "belly-to-belly". AKA: Ellipsoidal, Source Four, Leko
Because the focal point of the lens system is just in front of the aperture (or gate), an image of anything placed in the gate will be projected by the lenses. Because the optics invert the projected image, it will appear to be upside down and backwards.
ERSes are useful when you want:
A sharp edge,
A fixture which can be shuttered off scenery,
A fixture which can project a pattern, and/or
High intensity.
