LAMP ASSEMBLY WITH SWITCH AND FOCUSSING MECHANISMS

摘要

A lamp assembly includes a housing, a lamp bulb carrier slidably mounted in the housing for reciprocating movement along the optical axis of the lamp bulb and an actuator mounted in the housing for annular movement about an axis substantially perpendicular to the optical axis of the lamp bulb. The actuator has an eccentric portion engaging the lamp bulb carrier to effect reciprocation of the lamp bulb carrier when the actuator is angularly moved, and a switch carried by the housing is connected to the lamp bulb and connectable to an electrical power supply. The actuator also has a cam which engages and actuates the switch over a predetermined range of annular movement of the actuator to cause the lamp to be illuminated while the lamp is reciprocated along its optical axis.