LIGHT FILTER LENS ADAPTORS FOR

Brand	Owner	Address	Description
WELDORAMIC	STI LICENSING CORPORATION	IP Law Department One Town Center Road Boca Raton FL 33486	Light Filter Lens Adaptors for Protective Breathing Masks;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Spot illumination apparatus and methods are described. According to one implementation a spot luminaire includes a light source for emitting a beam of light and a projection lens configured to project the beam of light towards a distant target. A first field stop, through which the beam of light passes, is positioned between the light source and the projection lens. A filter apparatus is positioned proximate the first field stop and is adapted for selectively moving at least one variable density filter across the beam of light. A relay lens group is positioned between the first field stop and the projection lens. The relay lens group is configured to prevent the at least one variable density filter from being imaged by the projection lens. Methods for providing stage lighting are also described.