A ZOOM UNIT, A LIGHT ENGINE HAVING THE ZOOM UNIT AND AN ILLUMINATING APPARATUS

摘要

The present invention relates to a zoom unit (1) of a medical light engine (5), comprising at least one lens (2), at least one first reflector (3) and at least one second reflector (4), the at least one lens (2) receiving a collimated beam (L1) from a light source unit (6) of the light engine (5), the collimated beam (L1) being incident on the first reflector (3) after being converged by the lens (2), and being incident on the second reflector (4) after being reflected by the first reflector (3), to produce an output beam (L4) with its beam angle changed. In addition, the present invention further relates to a light engine (5) having the zoom unit and an illuminating apparatus. The light engine (5) having the zoom unit (1) according to the present invention can advantageously replace the halogen lamp in a common illuminating apparatus and realizes the effect of a shadowless effect in a precondition of not changing the outer profile of the original illuminating apparatus.