Patent ID: 8450678
Filing Date: 2013-05-28
Classification: E05F,E05Y,G01S,G01V,G02B

Abstract:
1. A sensor for use with an automatic door, comprising: a light-emitting unit including a plurality of light-emitters cyclically emitting and projecting light to a surveillance area near the door, and an optical device deflecting said light emitted by said light-emitters in the direction along the width of an opening of said door and in a direction perpendicular to the width of said door opening; a light-receiving unit including a light-receiver receiving light projected to said surveillance area, and a segmented lens including a combination of a plurality of lenses, said segmented lens being disposed to condense light projected to said surveillance area to said light-receiver; a setting unit in which whether each of said light-emitters should be made to emit light or not is set for each of said light-emitters; and a control unit judging whether or not a human or an object is present in said surveillance area, based on how said light-receiver receives light.