Light projector with variable beam - has flat mirror with levers for curving to obtain different beams

摘要

The light beam projector has mirrors in the beam path which are flat or spherically curved and can be elastically deformed. The beam is varied without complicated mechanical system. The lamp and reflector is supplemented by additional mirrors which vary the beam direction. These mirrors replace the variable lens system if their surfaces are continuously and differently curved. When these mirrors surfaces are flat then they reflect and the light beam only at an angle without other changes. One curving this surface the beam can be narrowed or widened. These mirrors can be made from metal and their surface has high reflectivity and high thermal stability. A mirror surface is curved by simple mechanical lever system on the mirror rear face.