Patent ID: 8079723

Claim:
An adjustable lens with a self-illuminating scale for use in photography, cinematography, or videography of the type connected to an electrical power source comprising a scale having a surface bearing scale markings moveable to adjust a parameter of the lens and a stationary opaque cover member with a reference marking mounted over said scale, said cover member having a portion at least partially defined by an edge, and through which said scale markings are visible, said edge extending in a direction generally away from said surface and having an opening, a recess situated under said cover member, adjacent said edge, a light source situated within said recess, means for connecting said light source and said power source to energize said light source, means for directing light from said light source through said edge opening in a direction along said scale surface such that said visible scale markings are illuminated by said light source, while light from said light source is otherwise substantially prevented from escaping from said cover member.