High speed, low power all CMOS thermometer-to-binary demultiplexer. The first and second actuator bodies are hermetically sealed using any number of techniques including a welding process. When a user sets a zoom position between discrete optical zoom positions within an overlapping range of the electronic zoom range of the fixed focal distance lens and the optical zoom range of the zoom lens, a control processor and timing generator sets the electronic zoom at the user’s setting zoom position. The beam deflecting device deflects, in the direction of the beam deflecting unit, a light beam coming from the adaptation interface.