Outdoor intrusion detector

• US 6,087,938 A
• Filed: 09/15/1998
• Issued: 07/11/2000
• Est. Priority Date: 09/17/1997
• Status: Expired due to Fees

• Current Assignee: Avtipus Patents and Inventions Ltd.
• Original Assignee: Nachshol Electronics, Ltd.
• Inventors: Gitelis, Meir, Gitelis, Assaf
• Primary Examiner(s): MULLEN, THOMAS J
• Application Number:
  US09/153,204
• Time in Patent Office: 665 Days
• Field of Search: 340/541, 340/565, 340/567, 340/539, 340/693.6, 340/693.8, 340/693.9, 340/693.12, 340/522, 250/353, 250/342, 250/DIG. 1
• US Class Current: 340/567
• CPC Class Codes: G08B 13/19 using infrared-radiation detection systems G08B13/194 takes precedence
• CPC Class Codes: G08B 25/001 Alarm cancelling procedures or alarm forwarding decisions, e.g. based on absence of alarm confirmation
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence
• CPC Class Codes: Y10S 250/01 Passive intrusion detectors

Abstract

An intrusion detection assembly including an intrusion detector including an inner housing, a detector disposed within the inner housing and a lens for focusing light from outside the inner housing onto the detector, and an outer housing which is generally sealed from the outside and defines a window which is generally transparent to light which is detected by the detector, wherein the intrusion detector is spaced from the window so as to define a region of high sensitivity between the lens and the window which is sealed from the outside environment.

Claims

1. An intrusion detection assembly including:

an intrusion detector including an inner housing, a detector disposed within the inner housing and a lens for focusing light from outside the inner housing onto the detector; and

an outer housing which is generally sealed from the outside and defines a window which is generally transparent to light which is detected by the detector, wherein

the intrusion detector is spaced from the window so as to define a region of high sensitivity between the lens and the window which is sealed from the outside environment,

and wherein light incoming through said window is directed not only through said lens of said intrusion sensor but also via a telescopic periscope disposed in said outer housing.

2. An intrusion detection assembly including:

an intrusion detector including an inner housing, a detector disposed within the inner housing and a lens for focusing light from outside the inner housing onto the detector; and

an outer housing which is generally sealed from the outside and defines a window which is generally transparent to light which is detected by the detector, wherein

the intrusion detector is spaced from the window so as to define a region of high sensitivity between the lens and the window which is sealed from the outside environment,

and wherein said window comprises an iris with a single, off-axis, rotatable opening.

3. An intrusion detection assembly including:

an intrusion detector including an inner housing, a detector disposed within the inner housing and a lens for focusing light from outside the inner housing onto the detector; and

an outer housing which is generally sealed from the outside and defines a window which is generally transparent to light which is detected by the detector, wherein

the intrusion detector is spaced from the window so as to define a region of high sensitivity between the lens and the window which is sealed from the outside environment,

and wherein said window comprises a pair of mutually overlaid elongate irises.

4. An intrusion detection assembly including:

an intrusion detector including an inner housing, a detector disposed within the inner housing and a lens for focusing light from outside the inner housing onto the detector; and

an outer housing which is generally sealed from the outside and defines a window which is generally transparent to light which is detected by the detector, wherein

the intrusion detector is spaced from the window so as to define a region of high sensitivity between the lens and the window which is sealed from the outside environment,

and wherein said window comprises an elongate, rotatable iris.