Holographic switch to replace tactile switches

摘要

Capable of energizing mechanical arms that open doors, the touchless holographic switch is operated by passing a finger through a holographic image that is floating freely in the air 2 in. in front of the switch's bezel. Unlike conventional tactile switches, this touchless switch is completely sealed against surrounding environments, has no closing contacts to create sparks, and helps users avoid whatever contamination or disease is residing on hands or clothing of previous users.