Patent ID: 6357892
Filing Date: 2002-03-19
Classification: F21S,F21V,F21W

Abstract:
A lighting fixture with adjustable beam spread, comprising:a hollow stem having an upper end and a lower end, the lower end adapted for fixed attachment in an area to be illuminated; a lamp and a lamp socket assembly extending from the upper end of the stem; a socket housing having an upper portion and a lower portion, the lower portion concentrically mounted on the upper end of the hollow stem to encircle the lamp and lamp socket assembly, wherein the socket housing moves axially relative to the stem for adjusting a combined axial length of the stem and the socket housing, and where the lower portion of the socket housing has an elongated slot formed therein; a cylindrical lens having a lower portion mounted on the upper portion of the socket housing; a reflector disposed on an upper portion of the cylindrical lens for enclosing the lamp and lamp socket; and a fastener extending radially from the upper end of the stem aligned with the slot in the socket housing, wherein the fastener cooperates with the slot to guide axial movement of the socket housing relative to the stem; wherein the socket housing, cylindrical lens and reflector move axially relative to the stem and the lamp and lamp socket assembly to adjust the beam spread over the area to be illuminated.