Patent ID: 8373678

Claim:
An electronics device comprising: a projector module configured to project a two-dimensional image, including: a first light source configured to emit a first laser beam selected from monochromatic laser beams and multichromatic laser beams; and a first scanner configured to scan an image projection surface with the first laser beam in a biaxial direction to project the two-dimensional image on the image projection surface, including: a uniaxial-scanning component rotatable on one axis; and a biaxial-scanning component rotatable on two axes; a distance measuring device configured to perform one-dimensional scanning to determine a distance to an optical interceptor, including: a second light source configured to emit a second light beam; a second scanner configured to perform the one-dimensional scanning with the second light beam, wherein a uniaxial-scanning component of the second scanner is the same uniaxial-scanning component of the first scanner; a light detector configured to detect the second light beam reflected from the optical interceptor; and a controller, wherein a scanning plane defined by a second light beam scanning direction and a second light beam traveling direction is parallel to the image projection surface, and the scanning plane covers at least the entire two-dimensional image, wherein positional data obtained by the distance measuring device are two-dimensional coordinate data in the second light beam scanning direction and the second light beam traveling direction, and are compared with two-dimensional coordinate data of the two-dimensional image to determine a position of the optical interceptor on the two-dimensional image, wherein the controller allows the device to operate according to said comparison when determining that the optical interceptor performs optical interception in a portion of the two-dimensional image, which portion has an area not less than a predetermined area, for a time not shorter than a predetermined time, and wherein the distance measuring device determines the distance to the optical interceptor using a Time of Flight method, which determines the distance on the basis of a time difference between a pulse of the second light beam emitted by the second light source and said pulse of the second light beam detected by the light detector.