Non-contact input device

An input device, comprising:

• an optical sensor which emits light traveling in a planar shape and senses an object on the plane where the emitted light travels,
• an optical member which changes a path of the light emitted from the optical sensor, and
• a processing unit which performs input processing based on sensing results of the optical sensor;
• wherein the optical sensor and the optical member form a first sensing surface consisting of a planar region in which the light emitted from the optical sensor travels and a second sensing surface that is farther from the optical sensor than the first sensing surface, and
• the processing unit performs the input processing based on a first sensing result of the optical sensor on the first sensing surface and a second sensing result of the optical sensor on the second sensing surface, and
• the optical member comprises a movable optical element capable of changing the path of the light emitted from the optical sensor,
• the first sensing surface is formed when the position of the optical element is a first position, and
• the second sensing surface is formed when the position of the optical element is a second position.