Title: Infrared object detector
Application Number: 97120078 Application Date: 1997.10.05
Publication Number: 1182249 Publication Date: 1998.05.20
Approval Pub. Date: 2002.10.02 Granted Pub. Date: 2002.10.02
International Classifi-cation: G01J3/00;G08B13/19
Applicant(s) Name: Samsung Electronics Co., Ltd. Address:
Inventor(s) Name: Tae-ho Kim;Sung-Soo Lee
Attorney & Agent: ma ying
Abstract:
    Two pairs of pyroelectric devices are each mounted on a cone-shaped substrate to precisely control their alignment. Each cone-shaped substrate is a part of a sensor module which also supports an attenuator, along with a transistor and a resistor chip associated with each pyroelectric device of the pair. The sensor module is provided with a silicon filter through which infrared radiation is transmitted to the pair of pyroelectric devices. Each module is mounted in an inner space formed by two hemispherical lenses which serve to direct light to the module. Two such hemispherical lens-sensor modules are provided in a precise optical arrangement designed to operate in conjunction with associated circuitry in order to detect infrared radiation from any of six distinguishable zones. Applications of such a device include for example cameras and air conditioning systems.In an infra red radiation detector comprising two sensor modules 300, each of the modules comprises a pair of pyroelectric devices 331,332 mounted on opposite sides of a conical insulating substrate 330 so that they have different fields of view. Each sensor module is installed within a lens 301 comprising two hemispherical or fresnel lenses, one for each pyroelectric device. Each module also includes a silicon filter 340 and a shield or attenuator 337 on the tip of the conical substrate. Each pyroelectric device has a FET 335,336 and resistor 333,334 mounted on the substrate 330. To improve the position discrimination precision to an object, relating to an infrared object detecting device. Plural sensitive regions A-F are provided by a pair of photo- detecting lenses 301 comprising two hemispherical lenses and a conical insulation substrate 330.
Time: 6