Invention Grant
- Patent Title: Detector
- Patent Title (中): 探测器
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Application No.: US12525928Application Date: 2007-11-20
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Publication No.: US09134180B2Publication Date: 2015-09-15
- Inventor: Timothy Andrew James , Dave John Randall
- Applicant: Timothy Andrew James , Dave John Randall
- Applicant Address: GB Middlesex
- Assignee: Thorn Security Limited
- Current Assignee: Thorn Security Limited
- Current Assignee Address: GB Middlesex
- Agency: Brinks Gilson & Lione
- Priority: GB0702284.1 20070206
- International Application: PCT/GB2007/004444 WO 20071120
- International Announcement: WO2008/096100 WO 20080814
- Main IPC: G01J5/00
- IPC: G01J5/00 ; G01J5/06 ; G01J5/34 ; G01J1/02
Abstract:
A detector comprises a housing (1), a pyroelectric array sensor (2) mounted within the housing, a heater (4) associated with the pyroelectric array sensor, and control means (6) for varying the power supplied to the heater to control the temperature of the pyroelectric array sensor relative to the ambient temperature in order to minimise the rate of change of temperature of the pyroelectric array sensor and to keep a predetermined difference between the temperature of the pyroelectric array sensor and the ambient temperature.
Public/Granted literature
- US20100027583A1 DETECTOR Public/Granted day:2010-02-04
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