EP4673928A1 - Motion-activated sensor device with forward, wide angle and downward & backward detections - Google Patents

Motion-activated sensor device with forward, wide angle and downward & backward detections

Info

Publication number
EP4673928A1
EP4673928A1 EP24712946.3A EP24712946A EP4673928A1 EP 4673928 A1 EP4673928 A1 EP 4673928A1 EP 24712946 A EP24712946 A EP 24712946A EP 4673928 A1 EP4673928 A1 EP 4673928A1
Authority
EP
European Patent Office
Prior art keywords
housing
sensor
mirror segments
motion
sensor device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24712946.3A
Other languages
German (de)
French (fr)
Inventor
Kong Yeow Lai
Boon Kheng Lee
Kheng Boon Loh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IQ Group Sdn Bhd
Original Assignee
IQ Group Sdn Bhd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IQ Group Sdn Bhd filed Critical IQ Group Sdn Bhd
Publication of EP4673928A1 publication Critical patent/EP4673928A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
    • G08B13/193—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using focusing means

Definitions

  • Motion-activated sensor device with forward, wide angle and downward & backward detections
  • the present invention relates generally to a motion-activated sensor device. It relates to a specific configuration of one or more sensor, a printed circuit board (PCB), a housing with viewing windows made from passive infrared (PIR) with or without optical lenses, and a special array of faceted mirror segments disposed inside the housing, in order to achieve forward, wide angle and downward & backward detections.
  • PCB printed circuit board
  • PIR passive infrared
  • a prior art PIR motion-activated sensor device is typically composed of a PCB with a pyroelectric sensor chip, housed within a mounting structure, which is placed in a location where the sensor is completely unobstructed.
  • the PCB serves as the decoding device, and interprets the signals the pyroelectric sensor chip receives.
  • the chip responds to body temperature changes, and when the amount of infrared surpasses a pre-set limit, the pyroelectric sensor chip will release a signal, thus activating an actuation device including a light or an alarm, or an air-conditioner or a heater.
  • a small window is built into the mounted structure, directly exposing the sensor to the designated, monitored area. If a person enters the given area, the change in infrared as a result of their body temperature is detected by the sensor, through the small window.
  • the window is transparent for infrared, so it does not block any signals, but it also helps protect the device from dust and bugs, both of which can trigger a false response.
  • Motion-activated sensor technology is also commonly known to employ multiple sensors, optical elements including mirrors and lenses, in the housing unit.
  • sensors When sensors are wall-mounted, they will have technical problems, including limited field of view, poor or no detection of wide angle, downward, and backward areas.
  • infrared radiation from areas beneath the present invention are incident through a bottom opening or viewing window provided by the invention.
  • the present invention provides a means to capture a broad spectrum of infrared radiation incident the housing.
  • the primary object of the present invention is to teach a specific configuration of one or more sensor, a PCB, a housing with viewing windows made from PIR with or without optical lenses, and a special array of faceted mirror segments, in order to achieve forward, wide angle and downward & backward detections.
  • the above primary object is chiefly achieved by a housing with viewing windows made from PIR with or without optical lenses allowing infrared radiation to enter the housing; one or more sensor mounted thereon a PCB towards the back of the housing, first to receive incident infrared radiation through the front of the housing in forward detection situation, and second to receive reflected infrared radiation in wide angle and downward & backward detection situation; a processor unit to process the above said sensor signals which in turn activate an actuation device including light or alarm or air-conditioner or heater; a special array of faceted mirror segments disposed inside the housing, spanning from one lateral side to another lateral side of the housing, above and at a distance in front of said mounted sensor; whereas further designated faceted mirror segments are disposed at the sides of rear faceted mirror segments nearer the mounted sensor serve to effect wide angle detection; and further designated faceted mirror segments nearer the front of the housing serve to effect downward and backward detections.
  • Another object is to employ a plurality, particularly 30 to 40 pieces, of faceted mirror segments to make up the special configuration of lens-mirrors-sensor, in order to minimize optical image distortion.
  • Another object is to effect a wide angle detection of incident infrared radiation through front and side viewing windows of the housing.
  • Another object is to effect a downward & backward detection of incident infrared radiation through the bottom viewing window of the housing.
  • Figure 1 a shows a to-be-assembled view of key components to constitute an exemplary example of the present invention (box-like housing, PIR with or without optical lenses, one or more sensor, faceted mirror segments, PCB, processor unit).
  • Figure 1 b shows a cross-sectional side view of a fully assembled present invention as in Figure 1 a.
  • Figure 1c shows a front view of a fully assembled present invention as in Figure 1 a.
  • Figure 2a shows in perspective a bottom-up view of the present invention, illustrating the relative positions of the mounted sensor, PIR with or without optical lenses and faceted mirror segments.
  • Figure 2b shows another bottom-up view of the mounted sensor, PIR with or without optical lenses and faceted mirror segments shown in Figure 2a.
  • Figure 3a shows a detection zone diagram depicting various detection zones effected by the present invention.
  • Figure 3b shows in perspective view how certain designated faceted mirror segments effect wide detection angle through the front viewing window of the housing.
  • Figure 3c shows in perspective view how certain designated faceted mirror segments effect downward and backward detections through the bottom viewing window of the housing.
  • Figure 3d shows in perspective view how certain designated faceted mirror segments effect wide detection angle through the side viewing windows of the housing.
  • Numerals are used to label key components. Particularly for mirror segments, alphabets like f, r, s, m and c are added after numerals to differentiate them where necessary. Alphabets like f, r and s, m are also used like coordinates, in order to locate them. A mirror segment labelled as 6fm would mean that it is located at the front and middle of the special array; 6rs would mean that it is located at the rear and side of the special array.
  • an exemplary example or embodiment comprises:- at least one sensor (4) within a box-like housing (2) with viewing windows which admit infrared radiation from detection areas outside; the front, two adjacent side and the bottom viewing windows of the box-like housing (2) are made of PIR lenses, while the lower half of the front viewing window additionally is integrally moulded with optical lenses including multiple convex lens, or Fresnel lens (7); a vertically disposed PCB (3) to which the sensor (4) is mounted; a processor unit (not shown) carried on the PCB (3) is further electrically connectable to an actuation device; a special array of faceted mirror segments (6) and side mirror segments (6c) are disposed in the vicinity of upper half of front viewing window made from PIR lens, above and at a distance in front of the mounted sensor (4).
  • these faceted mirror segments (6) and side mirror segments (6c) are arranged to reflect and focus incident infrared radiation onto the sensor (4). It is further important to note that the housing (2) may assume other shapes such as half- spherical shape in other examples of the present invention. In those examples, the window surface of the housing (2) is made of curved PIR with or without optical lenses.
  • Figure 1 a shows a to-be-assembled view of key components to constitute an exemplary example of the present invention (box-like housing (2), PIR with or without optical lenses (7), one or more sensor (4), faceted mirror segments (6), PCB (3), processor unit).
  • a front casing (1 ) and a rear casing (5) constitute a carrying structure that defines the box-like housing (2) in the exemplary example.
  • the PCB (3) with the assistance of the rear casing (5) is vertically disposed at the back of the housing (2).
  • the PCB (3) also carries a processor unit (not shown).
  • processor unit and the front casing (1 ) and the rear casing (5) are not part of the present invention and will not be further elaborated.
  • the senor (4) is mounted on the PCB (3) and faces three viewing windows of the housing (2).
  • the open floor opening acts as the bottom viewing window.
  • the upper half portions of three viewing windows are made from PIR lenses.
  • Lower half of the front viewing window is integrally moulded with optical lenses including multiple convex lenses, Fresnel lenses (7).
  • One continuous piece of PIR with or without optical lenses may be employed if the housing is not box-like.
  • the windows may well be curved but still made from PIR with or without optical lenses.
  • the special array of faceted mirror segments (6) including side mirror segments (6c) are horizontally disposed, spanning lateral side to lateral side of the housing (2).
  • the term "roof top" is sometime used in the exemplary example.
  • FIG. 2a and 2b In order to highlight this special array of faceted mirror segments (6) including side mirror segments (6c), two bottom-up views are shown in Figures 2a and 2b.
  • the special array is made from multiple, particularly four or more, tiers or rows of multiple, particularly six or more, faceted mirror segments (6) including side faceted mirror segments (6c).
  • these faceted mirror segments (6) including side mirror segments (6c) are arranged so that each of them would reflect incident infrared radiation onto the sensor (4).
  • each tier or row one or more mirror segments on both sides (6s) of central two or more mirror segments (6m) are gradually spread over towards the mounted sensor (4), so that the special array assumes a saddle-like half-cylindrical shape.
  • both sides of the two or more tiers or rows (6r) nearer the mounted sensor (4) are further fitted with two side mirror mechanisms.
  • Each side mirror mechanism is made from three or more faceted mirror segments (6c). In this sense, the faceted side mirror segments (6c, 6s) would serve to effect wide angle detection.
  • projections are depicted from mirror segments and PIR with or without optical lenses. Taking the front off-center projection as zero degree, so far radial movements in clockwise direction achieved are at least -70 degrees, and in anti-clockwise direction are at least 70 degrees.
  • the total field of views for this present invention will be at least 140 degrees.
  • Mirror segments (6fm) effect front detection angle through front viewing window.
  • Mirror segments (6rm and 6c) effect downward and backward detections through bottom viewing window.
  • Mirror segments (6rs) effect wide detection angle through side viewing windows.
  • certain designated mirror segments (6f, 6r, 6s, 6m) including side mirror segments (6c) are drawn specifically, with reflected infrared radiation focusing onto the mounted sensor (4).
  • Figure 3b shows the forward detection situation where mirror segments (6fs) capture smaller wide detection angle through the front viewing window of the housing (2).
  • Mirror segments (6fm) effect front detection angle through the front viewing window.
  • Figure 3c shows downward and backward detections situation where mirror segments (6rm and 6c) reflect incident infrared radiation through the bottom viewing window of the housing (2).
  • Figure 3d shows wide detection angle where mirror segments (6rs) reflect incident infrared radiation through the side viewing windows of the housing (2).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

One exemplary example of an improved motion-activated sensor device is illustrated in the present invention. The front, two adjacent side and bottom viewing windows of a box-like housing (2) are made of passive infrared with or without optical lenses. One or more sensor (4) is mounted onto a vertically disposed printed circuit board (3). A saddle-like half cylindrical shaped array of faceted mirror segments (6) are disposed above and at a distance in front of the mounted sensor (4). These mirror segments (6, 6f, 6r, 6m, 6s, 6c) are arranged to reflect and focus infrared radiation onto the mounted sensor (4). Thus, forward, downward & backward and wide angle detections are achieved.

Description

Motion-activated sensor device with forward, wide angle and downward & backward detections
Technical field
The present invention relates generally to a motion-activated sensor device. It relates to a specific configuration of one or more sensor, a printed circuit board (PCB), a housing with viewing windows made from passive infrared (PIR) with or without optical lenses, and a special array of faceted mirror segments disposed inside the housing, in order to achieve forward, wide angle and downward & backward detections.
Background art
A prior art PIR motion-activated sensor device is typically composed of a PCB with a pyroelectric sensor chip, housed within a mounting structure, which is placed in a location where the sensor is completely unobstructed. The PCB serves as the decoding device, and interprets the signals the pyroelectric sensor chip receives. The chip responds to body temperature changes, and when the amount of infrared surpasses a pre-set limit, the pyroelectric sensor chip will release a signal, thus activating an actuation device including a light or an alarm, or an air-conditioner or a heater.
In order for infrared to reach the sensor chip, a small window is built into the mounted structure, directly exposing the sensor to the designated, monitored area. If a person enters the given area, the change in infrared as a result of their body temperature is detected by the sensor, through the small window. The window is transparent for infrared, so it does not block any signals, but it also helps protect the device from dust and bugs, both of which can trigger a false response.
In order to further avoid false responses, care must be taken in selecting an installation area. Avoiding contact with air vents, such as HVAC vents, can help prevent fluctuations in air temperature from activating the sensor device.
Motion-activated sensor technology is also commonly known to employ multiple sensors, optical elements including mirrors and lenses, in the housing unit.
When sensors are wall-mounted, they will have technical problems, including limited field of view, poor or no detection of wide angle, downward, and backward areas. The forward radial movements, when off from the centre of optical element detection area, are getting weaker and less dense with blind spots. Additional sensors are placed at different angle locations to increase density and wide angle detection.
According to the prior art as disclosed in EP2450859A1 , the detection was limited to wide angle, with no downward, backward and weak forward detections.
According to the prior art as disclosed in DE102020106993A1 , a plurality of infrared sensors are combined with pyro and mirror for wide angle, near and far range detections. However, there is no downward and backward detections.
At this juncture, the Applicant proceeds to explain these terms used:
In a forward detection situation, infrared radiation from areas in front of the present invention is incident through a front viewing window provided by the invention.
In a downward & backward detection situation, infrared radiation from areas beneath the present invention are incident through a bottom opening or viewing window provided by the invention.
In a wide angle detection situation, the present invention provides a means to capture a broad spectrum of infrared radiation incident the housing.
Summary of the invention
The primary object of the present invention is to teach a specific configuration of one or more sensor, a PCB, a housing with viewing windows made from PIR with or without optical lenses, and a special array of faceted mirror segments, in order to achieve forward, wide angle and downward & backward detections.
The above primary object is chiefly achieved by a housing with viewing windows made from PIR with or without optical lenses allowing infrared radiation to enter the housing; one or more sensor mounted thereon a PCB towards the back of the housing, first to receive incident infrared radiation through the front of the housing in forward detection situation, and second to receive reflected infrared radiation in wide angle and downward & backward detection situation; a processor unit to process the above said sensor signals which in turn activate an actuation device including light or alarm or air-conditioner or heater; a special array of faceted mirror segments disposed inside the housing, spanning from one lateral side to another lateral side of the housing, above and at a distance in front of said mounted sensor; whereas further designated faceted mirror segments are disposed at the sides of rear faceted mirror segments nearer the mounted sensor serve to effect wide angle detection; and further designated faceted mirror segments nearer the front of the housing serve to effect downward and backward detections.
Another object is to employ a plurality, particularly 30 to 40 pieces, of faceted mirror segments to make up the special configuration of lens-mirrors-sensor, in order to minimize optical image distortion.
Yet, another object is to effect a wide angle detection of incident infrared radiation through front and side viewing windows of the housing.
Still, another object is to effect a downward & backward detection of incident infrared radiation through the bottom viewing window of the housing.
Brief description of the drawings
In order that the present invention may be more readily understood, the following description is given by way of an exemplary example wherein the housing is box-like.
Figure 1 a shows a to-be-assembled view of key components to constitute an exemplary example of the present invention (box-like housing, PIR with or without optical lenses, one or more sensor, faceted mirror segments, PCB, processor unit).
Figure 1 b shows a cross-sectional side view of a fully assembled present invention as in Figure 1 a.
Figure 1c shows a front view of a fully assembled present invention as in Figure 1 a.
Figure 2a shows in perspective a bottom-up view of the present invention, illustrating the relative positions of the mounted sensor, PIR with or without optical lenses and faceted mirror segments. Figure 2b shows another bottom-up view of the mounted sensor, PIR with or without optical lenses and faceted mirror segments shown in Figure 2a.
Figure 3a shows a detection zone diagram depicting various detection zones effected by the present invention.
Figure 3b shows in perspective view how certain designated faceted mirror segments effect wide detection angle through the front viewing window of the housing.
Figure 3c shows in perspective view how certain designated faceted mirror segments effect downward and backward detections through the bottom viewing window of the housing.
Figure 3d shows in perspective view how certain designated faceted mirror segments effect wide detection angle through the side viewing windows of the housing.
Detailed description
Numerals are used to label key components. Particularly for mirror segments, alphabets like f, r, s, m and c are added after numerals to differentiate them where necessary. Alphabets like f, r and s, m are also used like coordinates, in order to locate them. A mirror segment labelled as 6fm would mean that it is located at the front and middle of the special array; 6rs would mean that it is located at the rear and side of the special array.
Summarily, an exemplary example or embodiment comprises:- at least one sensor (4) within a box-like housing (2) with viewing windows which admit infrared radiation from detection areas outside; the front, two adjacent side and the bottom viewing windows of the box-like housing (2) are made of PIR lenses, while the lower half of the front viewing window additionally is integrally moulded with optical lenses including multiple convex lens, or Fresnel lens (7); a vertically disposed PCB (3) to which the sensor (4) is mounted; a processor unit (not shown) carried on the PCB (3) is further electrically connectable to an actuation device; a special array of faceted mirror segments (6) and side mirror segments (6c) are disposed in the vicinity of upper half of front viewing window made from PIR lens, above and at a distance in front of the mounted sensor (4).
It is important to note that these faceted mirror segments (6) and side mirror segments (6c) are arranged to reflect and focus incident infrared radiation onto the sensor (4). It is further important to note that the housing (2) may assume other shapes such as half- spherical shape in other examples of the present invention. In those examples, the window surface of the housing (2) is made of curved PIR with or without optical lenses.
Figure 1 a shows a to-be-assembled view of key components to constitute an exemplary example of the present invention (box-like housing (2), PIR with or without optical lenses (7), one or more sensor (4), faceted mirror segments (6), PCB (3), processor unit).
The relative positions of faceted mirror segments (6, 6c), with one sensor (4) mounted on the PCB (3) are illustrated. A front casing (1 ) and a rear casing (5) constitute a carrying structure that defines the box-like housing (2) in the exemplary example. The PCB (3) with the assistance of the rear casing (5) is vertically disposed at the back of the housing (2). The PCB (3) also carries a processor unit (not shown).
Please note that the processor unit and the front casing (1 ) and the rear casing (5) are not part of the present invention and will not be further elaborated.
Once assembled, and according to Figures 1 b and 1 c, the sensor (4) is mounted on the PCB (3) and faces three viewing windows of the housing (2). The open floor opening acts as the bottom viewing window. In the exemplary example, the upper half portions of three viewing windows are made from PIR lenses. Lower half of the front viewing window is integrally moulded with optical lenses including multiple convex lenses, Fresnel lenses (7).
One continuous piece of PIR with or without optical lenses may be employed if the housing is not box-like. In other examples, the windows may well be curved but still made from PIR with or without optical lenses.
Above and at a distance in front of the mounted sensor (4) and in the vicinity of upper half of the front viewing window, the special array of faceted mirror segments (6) including side mirror segments (6c) are horizontally disposed, spanning lateral side to lateral side of the housing (2). The term "roof top" is sometime used in the exemplary example.
In order to highlight this special array of faceted mirror segments (6) including side mirror segments (6c), two bottom-up views are shown in Figures 2a and 2b. The special array is made from multiple, particularly four or more, tiers or rows of multiple, particularly six or more, faceted mirror segments (6) including side faceted mirror segments (6c).
It is important to note that these faceted mirror segments (6) including side mirror segments (6c) are arranged so that each of them would reflect incident infrared radiation onto the sensor (4).
By extensive experimentation, the Applicant has found that 30 to 40 pieces of faceted mirror segments (6, 6c) arranged in this special array would ideally reduce optical image distortion.
On each tier or row, one or more mirror segments on both sides (6s) of central two or more mirror segments (6m) are gradually spread over towards the mounted sensor (4), so that the special array assumes a saddle-like half-cylindrical shape.
The Applicant now attempts to describe the term "saddle-like half-cylindrical shape" used. One length-wise orientation of the faceted mirror segments (6) would span from front (6f) to rear (6r) of the housing (2). Another width-wise orientation of the faceted mirror segments (6) would span from one lateral side (6s) to another lateral side (6s) of the housing (2).
It is also important to note that both sides of the two or more tiers or rows (6r) nearer the mounted sensor (4) are further fitted with two side mirror mechanisms. Each side mirror mechanism is made from three or more faceted mirror segments (6c). In this sense, the faceted side mirror segments (6c, 6s) would serve to effect wide angle detection.
According to a detection zone diagram as shown in Figure 3a, projections are depicted from mirror segments and PIR with or without optical lenses. Taking the front off-center projection as zero degree, so far radial movements in clockwise direction achieved are at least -70 degrees, and in anti-clockwise direction are at least 70 degrees. The total field of views for this present invention will be at least 140 degrees.
Mirror segments (6fm) effect front detection angle through front viewing window.
Mirror segments (6fs) effect wide detection angle through front viewing window.
Mirror segments (6rm and 6c) effect downward and backward detections through bottom viewing window. Mirror segments (6rs) effect wide detection angle through side viewing windows.
To illustrate further on forward detection, downward & backward detection and wide angle detection situations, certain designated mirror segments (6f, 6r, 6s, 6m) including side mirror segments (6c) are drawn specifically, with reflected infrared radiation focusing onto the mounted sensor (4).
Figure 3b shows the forward detection situation where mirror segments (6fs) capture smaller wide detection angle through the front viewing window of the housing (2). Mirror segments (6fm) effect front detection angle through the front viewing window.
Figure 3c shows downward and backward detections situation where mirror segments (6rm and 6c) reflect incident infrared radiation through the bottom viewing window of the housing (2).
Figure 3d shows wide detection angle where mirror segments (6rs) reflect incident infrared radiation through the side viewing windows of the housing (2).

Claims

Claims
1 ) A motion-activated sensor device comprising a housing (2), at least one sensor (4) disposed therein the housing (2) to receive infrared radiation from detection areas outside, and a processor unit to process the above radiation signal received by said sensor (4), is characterized in which the one or more sensor (4) is mounted onto a printed circuit board (3) which also carries the processor unit (not shown); the front, two adjacent side and the bottom viewing windows of the housing (2) are made from passive infrared (FIR) lenses; whereas firstly, the mounted sensor (4) receives infrared radiation directly admitted through the front viewing window of the housing (2); secondly, a special array of faceted mirror segments (6) are disposed above and at a distance in front of the mounted sensor (4), spanning lateral side to lateral side of the housing (2); and arranged to reflect incident radiation onto the mounted sensor (4); whereby above said components constitute a specific configuration of lens-mirrors- sensor to effect forward, downward & backward and wide angle detections; whereby the processor unit (not shown) is electrically connectable to an actuation device including a light, or an alarm, or a heater, or an air-conditioner.
2) The motion-activated sensor device as in Claim 1 wherein the special array of faceted mirror segments (6) are made of multiple faceted mirror segments arranged in multiple tiers or rows from front to rear (6f, 6r) of the housing (2); on each tier or row, one or more mirror segments (6s) on both sides of the central two mirror segments (6m) are gradually spread over towards the mounted sensor (4), so that the special array assumes a saddle-like half-cylindrical shape; whereas multiple tiers or rows of faceted mirror segments (6) are disposed above and at a distance in front of the mounted sensor (4).
3) The motion-activated sensor device as in Claim 2 wherein both sides of two or more tiers or rows (6r) nearer the mounted sensor (4) are further fitted with two side mirror mechanisms: each side mirror mechanism is made from three or more faceted mirror segments (6c); whereby these faceted side mirror segments (6c) serve to effect downward & backward and wide angle detections. 4) The motion-activated sensor device as in Claim 2 or 3 wherein these mirror segments (6, 6f, 6r, 6m, 6s, 6c) are arranged so that each of them would reflect incident radiation onto the mounted sensor (4). 5) The motion-activated sensor device as in Claim 1 in which the total field of views for this present invention will be at least 140 degrees, by taking the front off-center projection as zero degree, whereas radial movements in clockwise direction are at least -70 degrees, and in anti-clockwise direction are at least 70 degrees. 6) The motion-activated sensor device as in Claim 1 in which the housing (2) is box-like whereas the front, two adjacent side, the bottom viewing windows are made of PIR lenses, with the lower half of front viewing window additionally is integrally moulded with optical lenses including multiple convex lenses, Fresnel lenses (7). 7) The motion-activated sensor device as in Claim 1 in which the housing (2) is half- spherical or half-cylindrical whereas the window surface of the housing (2) is made of curved PIR lenses.
EP24712946.3A 2023-02-28 2024-02-22 Motion-activated sensor device with forward, wide angle and downward & backward detections Pending EP4673928A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2023001040 2023-02-28
PCT/IB2024/051699 WO2024180433A1 (en) 2023-02-28 2024-02-22 Motion-activated sensor device with forward, wide angle and downward & backward detections

Publications (1)

Publication Number Publication Date
EP4673928A1 true EP4673928A1 (en) 2026-01-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP24712946.3A Pending EP4673928A1 (en) 2023-02-28 2024-02-22 Motion-activated sensor device with forward, wide angle and downward & backward detections

Country Status (2)

Country Link
EP (1) EP4673928A1 (en)
WO (1) WO2024180433A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5626417A (en) * 1996-04-16 1997-05-06 Heath Company Motion detector assembly for use with a decorative coach lamp
US6346705B1 (en) * 1999-03-02 2002-02-12 Cordelia Lighting, Inc. Hidden PIR motion detector with mirrored optics
US6348691B1 (en) * 1999-12-30 2002-02-19 Cordelia Lighting, Inc. Motion detector with extra-wide angle mirrored optics
EP2450859B1 (en) 2010-11-05 2016-10-05 Vanderbilt International GmbH Multi mirror optics of passive radiation detector
DE102020106993A1 (en) 2020-03-13 2021-09-16 Steinel Gmbh Infrared motion detector

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WO2024180433A1 (en) 2024-09-06

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