Patent ID: 6855899

Claim:
A push button device for an electronic device comprising: an annular translucent member fixed to a body of said electronic device; a push button positioned in said annular translucent member to be capable of being depressed; a light emitter for illuminating said annular translucent member; a convex semi-cylindrical surface which is a portion of a complete cylindrical surface, and is positioned on a side of a space between said light emitter and said annular translucent member; and at least one photoreflective sheet adhered to said convex semi-cylindrical surface, wherein an axis of said complete cylindrical surface extends in a direction substantially parallel to a direction along which said light emitter and said annular translucent member are aligned, and wherein a direction normal to a tangent plane to said convex semi-cylindrical surface extends toward said annular translucent member and said push button.