Standard for USA/Canada: 120V/60Hz, 277V/60Hz
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Optical element used for light guidance. The radius, curvature and surface texture of the lens determine its optical properties. With projector spotlights, lens systems can be used to precisely project images and patterns from gobos. Fresnel lenses can be fitted into spotlights as an accessory in order to spread the light either symmetrically or asymmetrically.