Abstract: Fresnel lens arrays, devices, systems and methods of forming them are described herein. One array includes a Fresnel lens array, having a first portion including one or more defined areas of one or more Fresnel lenses, and a second portion including a first section that has its optical center located in a second section that is vertically above or below the first section and wherein each section is formed from a defined area of the one or more Fresnel lenses.

Abstract: A building controller includes a controller that is operatively coupled to a motion sensor and provides one or more control signals based at least in part on the motion sensed by the motion sensor. A lens member includes a HDPE (high density polyethylene) lens and a lens mounting structure that includes a lens retention hook. A bracket defines an aperture in registration with the motion sensor and further defines a lens securement aperture configured to accommodate the lens retention hook. The bracket may also define a lens securement spring configured to provide a biasing force to the lens retention hook of the lens mounting structure.

Abstract: A building controller includes a controller that is operatively coupled to a motion sensor and provides one or more control signals based at least in part on the motion sensed by the motion sensor. A lens member includes a HDPE (high density polyethylene) lens and a lens mounting structure that includes a lens retention hook. A bracket defines an aperture in registration with the motion sensor and further defines a lens securement aperture configured to accommodate the lens retention hook. The bracket may also define a lens securement spring configured to provide a biasing force to the lens retention hook of the lens mounting structure.

Abstract: Fresnel lens arrays, devices, systems and methods of forming them are described herein. One array includes a Fresnel lens array, having a first portion including one or more defined areas of one or more Fresnel lenses, and a second portion including a first section that has its optical center located in a second section that is vertically above or below the first section and wherein each section is formed from a defined area of the one or more Fresnel lenses.

Abstract: A measurement assembly for determining a torque applied to a shaft including a disk coupled to a motor such that the motor is to drive rotation of the disk about a central axis. The measurement assembly also includes a first ring and second ring coupled to the disk and the shaft, respectively, and a sensor unit to measure a rotational displacement between the first and second rings about the central axis. The measurement assembly further includes one or more deformable members coupled between the disk and the shaft, each including a pair of ends and a body extending therebetween. For each deformable member, one of the ends is coupled to the shaft and the other end is coupled to the disk such that a rotation of the shaft relative to the disk about the central axis is to cause the deformation of the body.

Abstract: A measurement assembly for determining a torque applied to a shaft including a disk coupled to a motor such that the motor is to drive rotation of the disk about a central axis. The measurement assembly also includes a first ring and second ring coupled to the disk and the shaft, respectively, and a sensor unit to measure a rotational displacement between the first and second rings about the central axis. The measurement assembly further includes one or more deformable members coupled between the disk and the shaft, each including a pair of ends and a body extending therebetween. For each deformable member, one of the ends is coupled to the shaft and the other end is coupled to the disk such that a rotation of the shaft relative to the disk about the central axis is to cause the deformation of the body.

Abstract: A method and apparatus are provided, wherein the apparatus performs the steps of detecting a moving object within a secured area, determining a size of the moving object, determining that the size exceeds a predetermined size threshold value associated with an animal, determining an aspect ratio of the moving object, determining that the aspect ratio meets a predetermined aspect ratio threshold value associated with an animal or crawling human, but not an upright human, retrieving an indicator from memory that establishes whether an animal is present or not present within the secured area, and setting an alarm upon detecting that the moving object exceeds the predetermined size threshold value, that the determined aspect ratio meets the predetermined aspect ratio threshold value of an animal or crawling human, and that the indicator establishes that there is no animal present in the secured area.

Abstract: A security device is disclosed, wherein the security device includes a Fresnel lens covering the entire face of the device, a housing, and a pyroelectric detector. The center portion of the Fresnel lens, which contains the Fresnel lens elements, is molded flat, its edges are molded in the final installed form, and its edges contain appendages that secure the lens on the device so there are no gaps between the lens and the device.

Abstract: A security device including a Fresnel lens covering the entire face of the device, a housing, and a pyroelectric detector is disclosed. The center portion of the Fresnel lens which contains the Fresnel lens elements is molded flat, it's edges are molded in the final installed form and its edges contain appendages that secure the lens on the device so there are no gaps between the lens and the device.

Abstract: A corner mountable housing (10) is provided for encasing an electronic device and for mounting the electronic device in a corner (12) of a wall or other mount surface (14) via at least one fastener (16) extending through the housing (10) to engage the corner (12). The housing (10) includes a surface-mountable housing portion (20) in the form of a rear cover, with the housing portion (20) being a one-piece molded construction and having first and second fastener retention features (22) and (24) formed therein.

Abstract: A corner mountable housing (10) is provided for encasing an electronic device and for mounting the electronic device in a corner (12) of a wall or other mount surface (14) via at least one fastener (16) extending through the housing (10) to engage the corner (12). The housing (10) includes a surface-mountable housing portion (20) in the form of a rear cover, with the housing portion (20) being a one-piece molded construction and having first and second fastener retention features (22) and (24) formed therein.

Abstract: A door, or window detector incorporates a magnet and a magnetometer. Dual loop processing can be provided for real-time signals from the magnetometer, as the magnet moves relative to it, to determine when at least one of small gap or large gap indicating alarms should be issued. Security can be substantially increased by randomizing the orientation of the magnet.

Abstract: A door, or window detector incorporates a magnet and a magnetometer. Dual loop processing can be provided for real-time signals from the magnetometer, as the magnet moves relative to it, to determine when at least one of small gap or large gap indicating alarms should be issued. Security can be substantially increased by randomizing the orientation of the magnet.

Abstract: A system and method for detecting the presence of a moving object within a detection zone is provided. The system includes a first sensor responsive to light in a first range of wavelengths in the detection zone, a second sensor responsive to light in a second range of wavelengths in the detection zone, wherein the second range of wavelengths is different from the first range of wavelengths, and a processing component for generating a variable threshold value for the first sensor based upon at least maximum and minimum output signals from the second sensor within a predetermined period of time, and for comparing the first output signal with the variable threshold value. The processing component generates an activating signal if the first output signal exceeds the threshold value.

Abstract: A motion detection system for detecting the presence of a moving object within a detection zone. A first sensor responsive to light in a first range of wavelengths in the detection zone is provided to generate a first output signal indicative of a first detected parameter of the light in the first range. A second sensor responsive to light in a second range of wavelengths in the detection zone is provided to generate a second output signal indicative of a second detected parameter of the light in the second range. The second range of wavelengths is different from the first range of wavelengths and the second sensor is disposed approximately to the first sensor. A processing component is provided to generate a variable threshold value for the first sensor based upon the second output signal indicative of a second detected parameter of the light in the second range and compare the first output signal with the variable threshold value.

Abstract: A motion detector for detecting a tampering within a detection zone. A vibration-sensing unit sensitive to vibrations applied to the detector is provided to produce a vibration output signal representative of a detected parameter of the vibrations. A light-sensing unit sensitive to light in a predetermined spectrum is provided to produce a light output signal representative of a detected parameter of the light in the predetermined spectrum. A processing unit is further provided to determine if the vibration output signal is consistent with a predetermined model indicative of a tampering and producing an activating signal accordingly.

Abstract: This invention relates generally to the field of motion detection sensors, and in particular to a system and method for adjusting the position of a printed circuit board relative to a focusing element. The invention includes a housing having a front opening and an interior cavity. A focusing element is located within the front opening and the detector is coupled to a printed circuit board located within the interior cavity. A cover is coupled to the printed circuit board and disposed within the interior cavity. A cam is operatively coupled with the cover and the printed circuit board for adjusting the position of the printed circuit board such that the detector's position is adjusted relative to the focusing element.

Abstract: A motion detector for detecting a tampering within a detection zone. A vibration-sensing unit sensitive to vibrations applied to the detector is provided to produce a vibration output signal representative of a detected parameter of the vibrations. A light-sensing unit sensitive to light in a predetermined spectrum is provided to produce a light output signal representative of a detected parameter of the light in the predetermined spectrum. A processing unit is further provided to determine if the vibration output signal is consistent with a predetermined model indicative of a tampering and producing an activating signal accordingly.

Abstract: This invention relates generally to the field of motion detection sensors, and in particular to a system and method for adjusting the position of a printed circuit board relative to a focusing element. The invention includes a housing having a front opening and an interior cavity. A focusing element is located within the front opening and the detector is coupled to a printed circuit board located within the interior cavity. A cover is coupled to the printed circuit board and disposed within the interior cavity. A cam is operatively coupled with the cover and the printed circuit board for adjusting the position of the printed circuit board such that the detector's position is adjusted relative to the focusing element.

Abstract: An optical filter device for filtering radiation energy includes a substrate having a plurality of coating layers which are both transmissive to a specified wavelength band of radiation. The plurality of coating layers on a surface of the substrate each have a specified coating thickness. The plurality of coating layers cause destructive interference and/or reflection of the radiation outside the specified wavelength band of the radiation while radiation within the specified wavelength band is passed through the substrate and the plurality of coating layers. The substrate or window/filter may be positioned in a housing between a receiving element such as a pyroelectric element and the radiation energy wherein the specified wavelength band of radiation passes through the substrate and plurality of coating layers to the pyroelectric element. A signaling device communicates a signal indicating when the radiation energy within the specified wavelength band reaches the at least one pyroelectric element.