公开(公告)号：US06211522B1

公开(公告)日：2001-04-03

申请号：US09109495

申请日：1998-07-02

申请人： Yaacov Kotlicki ,  Nachum Tchernichovski ,  Mark Moldavsky ,  Boris Zhevelev

发明人： Yaacov Kotlicki ,  Nachum Tchernichovski ,  Mark Moldavsky ,  Boris Zhevelev

IPC分类号： G01J508

CPC分类号： G02B3/08 ,  G02B3/005 ,  G02B3/06 ,  G08B13/193 ,  Y10S250/01

摘要： An improved infra-red lens array for use in a passive infra-red intrusion sensor, which maintains high detection capability for intruders moving in the middle and near field, and yet discriminates well between the movement of intruders and of pets in the near field. The upper part of the lens array is composed of at least one row containing convex lenses, operative to focus the far and middle field radiation of the area to be protected onto the detector of the sensor. The lower part of the array has at least one row containing cylindrical lenses, with their axes of symmetry aligned vertically, operative to focus infra-red radiation from the middle and near fields onto the detector. Each cylindrical lens focuses a vertical curtain of the protected area onto the infra-red detector. In order to ensure reduced sensor sensitivity close to the floor of the protected area, so as to provide pet movement discrimination, the cylindrical lenses are provided with spatially selective attenuation, so as to reduce their transmission factor as a function of the angle between the sensor and points on the floor.

摘要翻译： 用于被动红外入侵传感器的改进的红外透镜阵列，其保持对在中部和近场移动的入侵者的高检测能力，并且在近场中的入侵者和宠物的移动之间进行良好的区分。 透镜阵列的上部由包含凸透镜的至少一行构成，可操作以将待保护区域的远场和中场辐射聚焦到传感器的检测器上。 阵列的下部具有至少一行包含圆柱形透镜，其对称轴垂直对准，用于将来自中部和近场的红外辐射聚焦到检测器上。 每个柱面透镜将保护区域的垂直帘幕聚焦到红外探测器上。 为了确保靠近受保护区域的传感器灵敏度降低，为了提供宠物运动识别，柱面透镜被提供空间选择性衰减，以便根据传感器之间的角度减小其透射系数 并点在地板上。