Focusing device for light emitting diodes of illuminating devices, has base plate on which light emitting diodes sit that can be displaced in convex or concave manner

摘要

The device has base plate on which the light emitting diodes sit that can be displaced in a convex or concave manner. The base plate can consist of flexible material or of lamellas arranged on a circle about the center and can be displaced by muscle power, a motor, magnetic force, gas pressure etc.