PASSIVE INFRA-RED DETECTORS
2 Assignments
0 Petitions
Accused Products
Abstract
A passive infra-red detector including at least three sub-detectors, each sub-detector being operative to receive infra-red radiation from a corresponding one of at least three sub fields-of-view, each sub field-of-view being exclusively defined by an optical element which does not define any other sub field of view, the sub fields-of-view being angled with respect to each other, adjacent ones of the sub fields-of-view being separated by a gap of no more than 30 degrees and at least one of the sub fields-of-view having at least one of the following characteristics: extending over no more then 45 degrees in azimuth; and including not more than three azimuthally distributed detection zones, and signal processing circuitry, operative to receive output signals from the sub detectors and to provide a motion detection output.
75 Citations
241 Claims
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1-80. -80. (canceled)
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81. A passive infra-red detector having a field-of-view including multiple detection zones, said detector comprising:
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a housing having an aperture for passage of infra-red radiation therethrough;
at least one sensor disposed in said housing; and
at least one infra-red radiation director including a plurality of infra-red optical elements each associated with a different one of said multiple detection zones, each of said plurality of infra-red optical elements being operative to receive infra-red radiation from a corresponding one of said multiple detection zones and to direct said infra-red radiation to said at least one sensor along a corresponding radiation path, a plurality of said radiation paths generally intersecting at an intersection region located at said aperture, said aperture being generally of the same size as the size of said intersection region. - View Dependent Claims (82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94)
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95-201. -201. (canceled)
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202. A passive infra-red detector having a field-of-view including multiple detection zones, said detector comprising:
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a housing adapted for mounting adjacent a ceiling of a room and having at least one aperture for passage of infra-red radiation therethrough;
at least one sensor disposed in said housing; and
at least one infra-red radiation director including a plurality of infra-red optical elements associated with corresponding ones of said multiple detection zones, each of said plurality of infra-red optical elements being operative to receive infra-red radiation from at least one of said multiple detection zones and to direct said infra-red radiation to said at least one sensor along a corresponding radiation path, a plurality of said radiation paths generally intersecting at an intersection region located at said at least one aperture, said at least one aperture being generally of the same size as the size of said intersection region. - View Dependent Claims (204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222)
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203. A passive infra-red detector having a field-of-view including multiple detection zones, said detector comprising:
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a housing adapted for mounting adjacent a ceiling of a room and having at least one aperture for passage of infra-red radiation therethrough;
at least one sensor disposed in said housing; and
at least one infra-red radiation director including multiple infra-red optical elements, each of said multiple detection zones being exclusively defined by one of said multiple infra-red optical elements which does not define any other of said multiple detection zones;
said multiple infra-red optical elements being operative to receive infra-red radiation from said multiple detection zones and to direct said infra-red radiation to said at least one sensor along a corresponding radiation path, a plurality of said radiation paths generally intersecting at an intersection region located at said at least one aperture, said at least one aperture being generally of the same size as said intersection region. - View Dependent Claims (223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241)
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Specification