Patent ID: 7562999

Claim:
An operating lamp comprising: a center optical system comprising: a first casing; a first pulley installed on the first casing; and a plurality of light sources accommodated in the first casing; a plurality of side optical systems each comprising: a second casing fixed on the first casing; a disk body movably accommodated in the second casing; a plurality of condensing lenses fixed on the disk body for moving together with the disk body; a plurality of light emitting diodes (LEDs) disposed above the plurality of condensing lenses respectively and fixed on the second casing; a lead screw connected to the second casing in a coaxial manner; a second pulley meshed with the lead screw for moving downward or upward on the lead screw when rotated; a rod abutting against the disk body and the second pulley for pushing the disk body to move downward when the second pulley is rotated downward; and a spring connected to the second casing and the disk body for pulling the disk body to move upward when the second pulley is rotated upward; a motor mounted on the first casing; a plurality of third pulleys; a gear wheel mounted on the motor and disposed next to the first pulley for meshing with the first pulley; and a gear belt disposed along the first pulley, second pulleys of side optical systems and third pulleys for meshing with the first pulley and the second pulleys and engaging with the third pulleys for causing each disk body to move upward or downward with the corresponding second pulley when the motor drives the gear wheel.