CN1218242A - System of absorbing and/or scattering superfluous radiation in optical motion sensor - Google Patents
System of absorbing and/or scattering superfluous radiation in optical motion sensor Download PDFInfo
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- CN1218242A CN1218242A CN 98102813 CN98102813A CN1218242A CN 1218242 A CN1218242 A CN 1218242A CN 98102813 CN98102813 CN 98102813 CN 98102813 A CN98102813 A CN 98102813A CN 1218242 A CN1218242 A CN 1218242A
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- 230000009545 invasion Effects 0.000 claims description 55
- 230000000452 restraining effect Effects 0.000 claims description 25
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- 230000001681 protective effect Effects 0.000 abstract description 3
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR 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
Abstract
An infrared intrusion sensing system comprises a compound lens having a plurality of lines of focus for focusing infrared radiation that enters the system onto a detector, and a window to allow infrared radiation to enter the system and then be focused onto the detector by a set of curvilinear-shaped mirrors. The detector is located near the focal point of the compound lens elements and curvilinear-shaped mirror elements. An enclosure surrounding the detector provides isolation from insect entry and constitutes an insect exclusion enclosure envelope. The enclosure envelope is a protective volume of space for the optical paths between the lens or window and the detector that prevents the entry of objects interfering with the optical paths. Pigmenting, texturing, and/or contouring the insect exclusion enclosure surrounding the detector is provided, thereby minimizing false alarms and providing improved operating performance by the infrared intrusion sensing system.
Description
The present invention relates generally to a kind of infrared invasion sensor-based system, relates in particular to a kind of method and apparatus that does not focus on the unnecessary radiation on the detecting device that is used to limit.
An infrared invasion sensor-based system is made up of the lens with many gathering lines (lines of foacs), and the infrared radiation that is used for entering this system focuses on detecting device.Isolated cover around this detecting device has prevented entering of insect.Should isolatedly cover the protective zone that shell has a constant volume, be used to protect the optical path between lens and the detecting device.By lens focus locational radiation outside detecting device is " unnecessary ", and by think produce by this insect get rid of in the isolated cover inside again reflection sense to, the signal source of false invasion.Eliminate the unnecessary radiation that arrives detecting device and will improve the performance of infrared invasion sensor-based system greatly, and reduce false-alarm.
Authorize the United States Patent (USP) of Richard B.Stephens on May 19th, 1981 and described a kind of method that forms reflective surface will by the particle track etching of a megohmite insulant No. 4268347.Produce a grain surface with conical cavity.This grain surface has reduced the light reflection, but it is not described or suggestion is applied to infrared field.
Authorize the United States Patent (USP) of Frank Schwarz on June 2nd, 1981 and described the polyhydroxy carbon plastics that use such as tygon for No. 4271358, as the shell of infrared sensor, and add can be in visible light strong absorption but can not be in the far infrared region dyestuff or the pigment water of strong absorption.
Authorize the United States Patent (USP) of Kust Muheler January 13 nineteen ninety-five and described a kind of infrared intrusion detection device for No. 5424718, it utilizes scattering to prevent by the radiation-induced false-alarm outside the useful radiation belt.One rough surface is arranged on the focus lamp, be used for infrared selection.In 6 to 15 microns wavelength coverage, infrared radiation focuses on by direct reflection and according to the shape of catoptron.In the visible light and scope from about 0.4 micron or be smaller to additional radiation 3 microns the near-infrared region by diffuse scattering.Yet extra infrared radiation does not have scattering, thereby does not prevent that this class radiation is detected.
Therefore, one of purpose of the present invention is exactly the unnecessary radiation that absorption or scattering enter infrared invasion sensor-based system.
Another object of the present invention is the device that absorbs unnecessary radiation by providing, thereby reduces the performance that false-alarm improves infrared invasion sensor-based system.
The insect that an object of the present invention is at this infrared invasion sensor-based system get rid of carry out on the cover wall of isolated cover painted, in order to absorb unnecessary radiation.
Another object of the present invention is that the insect in this infrared invasion sensor-based system gets rid of on the inwall of isolated cover a grain surface is provided, in order to the unnecessary radiation of scattering.
Another object of the present invention is that the insect in this infrared invasion sensor-based system gets rid of on the inwall of isolated cover an equivalent relief is provided, and in order to causing the repeatedly lossy reflection of unnecessary radiation in the paddy of equivalent relief, thereby makes unnecessary radiation falloff.
Another object of the present invention is by inject a device simply in the system with the isolated cover of insect eliminating profile, and on the wall of this device, provide painted, texture and/or equivalent relief, absorbing or the unnecessary radiation of scattering, thereby improve the performance of existing infrared intrusion system.
Another purpose of the present invention provides an infrared intrusion sensor, and it has a seal closure, in order to isolated insect, and an internal partition, in order to absorb or the unnecessary radiation of scattering.
Above-mentioned and other purposes also can realize by an invasion sensor-based system, and this sensor-based system comprises a band compound lens, in order to the front assembly of focused radiation; A circuit board has one in order to the radiation detector of sensing radiation with in order to handle the circuit of detected radiation on the circuit board; A rear assembly that matches with front assembly, this rear assembly is used for this circuit board is enclosed among this front assembly and the rear assembly, this front assembly also comprises the device that is attached to this compound lens, this device is in order to coming insect and radiation detector are isolated, and prevents that unnecessary radiation from arriving this radiation detector.This insect remover comprises one on first end adjacent with this compound lens, in order to receive the opening of the radiation after this focusing, and a opening on second end slightly littler than this first end upper shed, this second end opening is in order to hold the radiation detector that extends by this opening from this adjacent circuit plate.This insect remover also comprises in order to absorb the painted of unnecessary radiation, in order to the grain surface of the unnecessary radiation of scattering, and/or in order to prevent that this unnecessary radiation from reflexing to the equivalent relief on this radiation detector.This front assembly comprises another window in its bottom, and in order to received radiation, the radiation bump that enters sensor-based system by this bottom window is positioned at this detecting device top, in order to this radiation is reflexed to the catoptron on this radiation detector.Provide black by being colored as this insect remover.This grain surface comprise with respect to normal smooth surface repeatedly, random deviation, on this surface, to form a three-dimensional configuration.This equivalence relief comprises spike and low ebb, in order to cause the lossy reflection of this unnecessary radiation in paddy.
Above-mentioned purpose also can be by realizing by front assembly, circuit board with the invasion sensor-based system that the supporting rear assembly of this front assembly constitutes.Wherein, front assembly has a compound lens in order to focused radiation; This circuit board comprises that is arranged on a compound lens opposite, in order to the radiation detector of this radiation of sensing with in order to handle the circuit of this detected radiation; This rear assembly is enclosed this circuit board among this front assembly and the rear assembly; This front assembly comprises and is attached to this compound lens, and in order to insect and the isolated device that comes of this radiation detector, this front assembly also comprises and injecting in this insect remover in order to suppressing the device of unnecessary radiation.This insect remover and restraining device comprise one on first end adjacent with this compound lens, in order to receive the opening of the radiation after this focusing, and one on second end, slightly littler than the first end upper shed, in order to hold the opening of the radiation detector that extends through from the adjacent circuit plate.This restraining device comprises in order to absorb the painted of unnecessary radiation.In addition, the restraining device of this insertion can comprise a grain surface in order to the unnecessary radiation of scattering, and perhaps one in order to prevent that unnecessary radiation from reflexing to the equivalent relief on this radiation detector.This front assembly also is included on its bottom, in order to another window of received radiation; And the radiation bump that enters sensor-based system by this bottom window is positioned at this detecting device top, in order to this radiation is reflexed to the catoptron on this radiation detector.
Above-mentioned purpose also can be by realizing by front assembly, circuit board, dividing plate with the invasion sensor-based system that the supporting sealable rear assembly of this front assembly constitutes.Wherein, front assembly has a compound lens in order to focused radiation; This circuit board comprises in order to the radiation detector of this radiation of sensing with in order to handle the circuit of this detected radiation; This dividing plate has one and is attached to first openend of this radiation detector circumference and towards compound lens, in order to suppress second openend of unnecessary radiation; This rear assembly is enclosed this circuit board among this front assembly and the rear assembly, thereby prevents that insect from entering sensor-based system.This dividing plate comprises: be positioned on the second preceding end of this compound lens, the opening of the radiation of crossing in order to collectiong focusing, and one on first end, than slightly little in the second end upper shed, in order to hold the opening of the radiation detector that extends through from adjacent circuit board.Dividing plate comprises in order to absorb the painted of unnecessary radiation.In addition, this dividing plate can comprise the grain surface in order to the unnecessary radiation of scattering, perhaps in order to prevent that unnecessary radiation from reflexing to the equivalent relief on this radiation detector.This front assembly comprise another in its bottom the window in order to received radiation, and the radiation bump that enters this sensor-based system by this bottom window is positioned at the detecting device top, in order to this radiation is reflexed to the catoptron on this radiation detector.
Above-mentioned purpose also can realize by the method that is suppressed at unnecessary radiation in the invasion sensor-based system.The step that this method comprises has: a front assembly that has in order to the compound lens of focused radiation is provided; Utilization is placed on this radiation of detecting device sensing on the circuit board, and this circuit board comprises and combining with this detecting device, in order to handle the circuit of the radiation that this sensing crosses; Should invade sensor-based system encapsulates with a rear assembly, this rear assembly is placed and is attached thereto together in the periphery of this front assembly adjacent to one side of circuit board, and in this front assembly, provide a restraining device, in order to prevent that unnecessary radiation from arriving detecting device, the restraining device that is attached to this compound lens prevents that insect from entering the outer casing space of this intrasystem restraining device.The step that this method also comprises has: increase painted in order to the material of the restraining device that absorbs unnecessary radiation.The grain surface that provides on this restraining device in order to the unnecessary radiation of scattering also is provided this method.This method also is included in to be provided on this restraining device in order to prevent that unnecessary radiation from reflexing to the equivalent relief on this radiation detector.On this restraining device, provide the step of equivalent relief to comprise spike and low ebb are set, in order in paddy, to cause the lossy reflection of unnecessary radiation.
Above-mentioned purpose also can realize by the method that is suppressed at the radiation in the invasion sensor-based system.The step that this method comprises has: a front assembly that has in order to the compound lens of focused radiation is provided; Utilization is placed on this radiation of detecting device sensing on the circuit board, and this circuit board comprises and combining with this detecting device, in order to handle the circuit of the radiation that this sensing crosses; Should invade sensor-based system encapsulates with a rear assembly, this rear assembly is placed and is attached thereto together in the periphery of this front assembly adjacent to one side of circuit board, utilization is attached to this compound lens and is placed on the interior isolated closure assembly of front assembly insect is ejected from radiation detector, and inject this isolated closure assembly, in order to suppress unnecessary radiation.This restraining device comprises: use paintedly on the wall of this remover, use grain surface and/or equivalent relief on such wall.
Appended claims particularly points out and explicitly calls for protection theme of the present invention.Various purpose of the present invention, advantage and novel characteristics, in conjunction with following detailed description to accompanying drawing, will be clearer and more definite, corresponding component wherein adopts identical figure notation.
Accompanying drawing 2 is decomposition diagrams of the rear assembly of this invasion sensor-based system, has shown the front portion of a detecting device and this compound lens;
Accompanying drawing 3 is skeleton views that this insect gets rid of isolated cover, has shown the front portion of this isolated cover;
Accompanying drawing 4 is preceding elevation views that this insect gets rid of isolated cover;
Accompanying drawing 5 is to have the cross-sectional view that a compound lens and infrared detector, this insect get rid of isolated cover shown in the accompanying drawing 4, has shown the interreflection of a unnecessary radiation path and not reflecting of a non-unnecessary radiation path;
Accompanying drawing 6 is to have the cross-sectional view that a compound lens and detecting device, this insect get rid of isolated cover shown in the accompanying drawing 4, has shown when this insect to get rid of isolated the cover when painted not the reflecting of an exemplary unnecessary radiation path;
Accompanying drawing 7 is to have the cross-sectional view that a compound lens and infrared detector, this insect get rid of isolated cover shown in the accompanying drawing 4, shows when this insect gets rid of isolatedly to cover when comprising texture the scattering of an exemplary unnecessary radiation path;
Accompanying drawing 8A has shown one in order to the unnecessary radiation of scattering, gets rid of grain surface in the inside surface of isolated cover this insect shown in the accompanying drawing 7;
Accompanying drawing 8B is the skeleton view of the part of the grain surface that this insect gets rid of isolated cover shown in the accompanying drawing 7;
Accompanying drawing 8C be amplify, this insect shown in the accompanying drawing 8B gets rid of the side elevation view of the grain surface of isolated cover, shown texture height and texture length spacing;
Accompanying drawing 9 is that this insect that has a compound lens and infrared detector shown in the accompanying drawing 4 gets rid of the isolated cross-sectional view that covers, and shows when the isolated cover of this insect eliminating comprises equivalent relief the scattering of an exemplary unnecessary radiation path;
Accompanying drawing 10A is the decomposition diagram of the optional embodiment of an invasion sensor-based system, and this system has an interpolation device, in order to absorb or the unnecessary radiation of scattering;
Accompanying drawing 10B is the decomposition diagram of front shell assembly shown in the accompanying drawing 10A, shown place insect get rid of in the isolated cover cross look, texture and/or equivalent contoured plug-in unit;
Accompanying drawing 11A is the decomposition diagram of another optional embodiment of an invasion sensor-based system, this system has one with the isolated shell outside of insect, with one on circuit board, be attached to the dividing plate on the infrared detector periphery, in order to absorb and/or scattering unnecessary radiation; And
Accompanying drawing 11B is the decomposition diagram of this front shell assembly shown in the accompanying drawing 11A, has shown the compound lens that is attached to this front shell.
With reference now to accompanying drawing 1,, this is the decomposition diagram of the front assembly 10 of invasion sensor-based system 11, and it has comprised the isolated cover 12 of insect eliminating of the present invention, and this isolated cover comprises the device that does not focus on the unnecessary radiation on the detecting device 26 in order to absorption or scattering.This insect gets rid of isolated cover 12 also provides a constant volume for the optical path between lens 14, window 18 and radiation detector 26 protective zone, enters and disturb this optical path with the object that prevents about 1mm of diameter or larger diameter.Reduce unnecessary radiation and will improve runnability, and reduce the false-alarm of this class invasion sensor-based system.Compound lens 14 is attached to the front portion that this insect gets rid of isolated cover 12, and many focal lines are arranged, with focusing on detecting device 26 so that enter the infrared radiation of this system.Detecting device 26 is positioned near the focus of compound lens 14 and shaped form catoptron 24.Except compound lens 14, window cover 18 provides another radiation source that is radiated detecting device, and a front shell 16 is got up lens 14 and isolated cover 12 encapsulation of this insect eliminating with compound.
Referring to accompanying drawing 2, this is the decomposition diagram of the rear assembly 20 of this invasion sensor-based system 11.Show among the figure, a circuit board 22 places in this front assembly 16, this circuit board 22 has an infrared detector 26, one be positioned on the infrared detector 26, in order to radiation is reflexed to the shaped form catoptron 24 on the detecting device 26, one is just in time matched with the circumference of detecting device 26, get rid of isolated cover O-ring seal 28 in order to get rid of the insect that an end face of isolated cover 12 joins with insect, and other circuit, rear assembly 20 matches with front assembly 16 and tightly is interlocked.Usually, on rear assembly 20, be provided with the opening that is used to encapsulate purpose, the device that enters for insect also is provided.
Referring to accompanying drawing 3 and accompanying drawing 4, accompanying drawing 3 is skeleton views that this insect gets rid of isolated cover 12, should isolated cover 12 have a bigger open front 30 adjacent, and wherein shaped form catoptron 24 and infrared detector 26 are given prominence to the smaller opening 32 that puts in wherein from isolated cover 12 rear portions in this package system with this compound lens 14.Accompanying drawing 4 is preceding elevation views that this insect gets rid of isolated cover 12, and it has shown sidewall 31 and the smaller opening 32 of being somebody's turn to do on isolated cover 12 rear portions.
Referring to accompanying drawing 5, it has shown that this insect gets rid of the cross-sectional view of isolated cover 12, compound lens 14 and infrared detector 26, and gets rid of isolated 12 the exemplary unnecessary radiation path 34 when not comprising painted, texture and/or equivalent relief that cover when this insect.Also show a favourable path 36 among the figure or directly arrived the non-unnecessary radiation of this infrared detector 26.This unnecessary radiation path 34 through after the interreflection, arrives this infrared detector 26 in this insect gets rid of isolated cover 12.
Referring now to accompanying drawing 6,, the figure illustrates contain join constitute painted 40 in the material that this insect gets rid of isolated cover shell, this insect gets rid of the cross-sectional view of isolated cover 12.Article one, unnecessary radiation path 38 is absorbed by the side 41 that this insect gets rid of isolated cover 12.Get rid of isolated cover 12 by painted 40 insects that produce black most effectively.Being used for injection molding, to make the material that insect gets rid of isolated cover 12 be polycarbonate plastic, the Le Kesen that this plastics can adopt the General Electric Co. Limited of U.S. Massachusetts state pittsfield to produce
141.It is 24 millimicrons 0.2% carbon black that the pigment that uses among the Le Kesen 141 comprises particle diameter.
Referring to Fig. 7 and Fig. 8 A, 8B and 8C.Fig. 7 represents that the insect that comprises a grain surface 42 gets rid of isolated 12 the cross-sectional view that covers.Article one, exemplary unnecessary radiation path 44 these insects of bump get rid of the grain surface 42 of isolated cover 12 and are scattered, thereby do not reflex to and do not shine this infrared detector 26.What superficial makings was defined as constituting the three-dimensional surface configuration has deviation repeatedly or at random with normal surface.Accompanying drawing 8A has shown a typical grain surface, and accompanying drawing 8B is the skeleton view that this insect gets rid of the part of the grain surface that completely cuts off cover 12.Accompanying drawing 8C shows the cross-sectional view grain surface shown in accompanying drawing 8A and the 8B, that amplify, and it has 0.008 inch texture length spacing 43 and 0.003 inch texture height 45.
Referring to accompanying drawing 9, it is presented at the cross-sectional view that this insect that comprises equivalent relief on isolated cover 12 inner wall surface gets rid of isolated cover 12.Show among the figure, rise and fall 47 by on the inwall of this isolated cover 12, providing equivalent, thereby utilize this insect to get rid of the repeatedly lossy reflection of the sidewall 46 of isolated cover, unnecessary radiation path 48 is attenuated.When the texture height surpasses its horizontal length, the equivalent grain surface shown in 47 alternative accompanying drawing 8A and the 8C that rises and falls.These structures will cause the interreflection in the equivalent relief paddy shown in the accompanying drawing 9, constitute lossy reflection repeatedly.
Referring now to accompanying drawing 10A and accompanying drawing 10B,, it is the decomposition diagram of the optional embodiment of an invasion sensor-based system 50.Accompanying drawing 10A shows is the decomposition diagram of complete sensor-based system 50, it comprises: rear assembly 20, circuit board 22, be packaged with infrared detector 26 and adjacent with infrared detector and be positioned at shaped form catoptron 24 and a front assembly 16 on this infrared detector 26 on this circuit board 22.Accompanying drawing 10B shows the decomposition diagram of this front assembly 15, this front assembly 15 comprises: a front shell 16, an insect gets rid of isolated cover 12, a painted texture and/or equivalent fluctuating plug-in unit 52, this plug-in unit has the general shape that this insect gets rid of isolated cover 12, and be positioned at the inside that this insect gets rid of isolated cover, and be attached to the compound lens 14 that this insect gets rid of isolated cover 12, this compound lens 14 is to get rid of 12 interlocks of isolated cover by the lens clasp of linking up with on 13 17 with this insect.A window 18 slips into the bottom that this insect gets rid of isolated cover 12.Be attached with compound lens 14 and window 18 and comprise that this isolated cover 12 of insect eliminating of plug-in unit 52 and the rear portion of this front shell 16 are interlocked.This front assembly 15 is interlocked with this rear assembly 20 then, and this insect gets rid of isolated cover 12 joins with this circuit board 22 by the isolated hood pad circle 28 of this insect eliminating.This embodiment of this invasion sensor-based system 50 has comprised by plug-in unit 52 is inserted in the existing invasion sensor-based system, and absorbs and/or the advantage of the unnecessary radiation of scattering.
Referring now to accompanying drawing 11A and accompanying drawing 11B,, this is the decomposition diagram of another optional embodiment of an invasion sensor-based system 60.Accompanying drawing 11A has shown the decomposition diagram of this system 60, this system 60 comprises a back shell 62,64, one unnecessary radiation absorbers of a circuit board or painted as previously mentioned, texture and/or equivalent the fluctuating are handled, and are attached to the dividing plate 67 of this circuit board 64.This circuit board 64 is attached to this back shell 62, and front assembly 68 is interlocked with this back shell 62, and seals this system 60 and enter with protection against insect.
Referring to accompanying drawing 11B, this is the decomposition diagram of front assembly 68.This front assembly 68 comprises one by the suitable latch 76 on this front shell 70, thereby is attached to the compound lens 72 of front shell 70.A window 74 is attached to the bottom of this front shell 70 by suitable interlock latch 77.In the invasion sensor-based system 60 that this embodiment provides, this unnecessary radiation absorber does not join with this front shell 70.When this sensor-based system 60 of assembling, this back shell 62 matches with this front shell 68, and does not stay any opening for insect discrepancy.In addition, also can allow little insect enter without any encapsulated holes.Painted, texture and/or equivalent the fluctuating are handled, and to absorb or the dividing plate 67 of the unnecessary radiation of scattering, are attached on the circuit board 64 of the periphery of this infrared detector 65.When this sensor-based system 60 of practical application, it can be packaged together with the magnetic tape equipment on shell 62 rear portions.
The present invention is disclosed by some embodiment.Clearly, only otherwise deviate from the present invention, can make a lot of changes to disclosed equipment.Therefore, the purpose of claims is exactly to cover all the such change that falls into essence of the present invention and scope and changes.
Claims (37)
1. invade sensor-based system for one kind, comprising:
One has compound lens, in order to the front assembly of focused radiation;
One contains in order to the radiation detector of the described radiation of sensing with in order to the circuit board of the circuit of handling described detected radiation;
A rear assembly that matches with described front assembly is used for described circuit board is encapsulated in described front assembly and the described rear assembly; With
Described front assembly comprises the device that is attached on the described compound lens, in order to insect excluded described radiation detector and to prevent that unnecessary radiation from arriving described radiation detector.
2. according to the invasion sensor-based system of claim 1, it is characterized in that described insect remover comprises one on first end adjacent with described compound lens, in order to receive the opening of the radiation after the described focusing, and one than described first end upper shed opening slightly little, on second end, and described second end opening is in order to hold from the extended radiation detector of described adjacent circuit plate.
3. according to the invasion sensor-based system of claim 1, it is characterized in that described insect remover comprises in order to absorb the painted of described unnecessary radiation.
4. according to the invasion sensor-based system of claim 1, it is characterized in that described insect remover comprises the grain surface in order to the unnecessary radiation of scattering.
5. according to the invasion sensor-based system of claim 1, it is characterized in that described insect remover comprises in order to prevent that described unnecessary radiation from reflexing to the equivalent relief on the described radiation detector.
6. according to the invasion sensor-based system of claim 1, it is characterized in that described front assembly be included on its bottom in order to another window of received radiation and in order to the described insect remover of received radiation; With
The catoptron that is positioned at described detecting device top is clashed in the described radiation that enters described sensor-based system by described bottom window, in order to described radiation is reflexed on the described radiation detector.
7. according to the invasion sensor-based system of claim 3, it is characterized in that describedly paintedly providing black to described insect remover.
8. according to the invasion sensor-based system of claim 4, it is characterized in that described grain surface comprises the deviation at random repeatedly with respect to normal smooth surface, on described surface, to form a three-dimensional configuration.
9. according to the invasion sensor-based system of claim 5, it is characterized in that described equivalent relief comprises spike and low ebb, in order in described paddy, to cause the lossy reflection of described unnecessary radiation.
10. according to the invasion sensor-based system of claim 2, it is characterized in that when described second end opening and described circuit board positioned opposite, have a packoff be positioned at described insect remover second end opening around.
11. an invasion sensor-based system comprises:
A front assembly that has in order to the compound lens of focused radiation;
One contains in order to the radiation detector of the described radiation of sensing with in order to the circuit board of the circuit of handling described detected radiation, described radiation detector and described compound lens positioned opposite;
A rear assembly that matches with described front assembly is used for described circuit board is encapsulated in described front assembly and the described rear assembly;
Described front assembly comprises the device that is attached on the described compound lens, in order to insect is excluded described radiation detector; With
Described front assembly also comprises in the described insect remover of reeve in order to suppress the device of unnecessary radiation.
12. invasion sensor-based system according to claim 11, it is characterized in that described insect remover and described restraining device comprise one on first end adjacent with described compound lens, opening in order to the radiation that receives described focusing, and one than described first end upper shed opening slightly little, on second end, and described second end opening is in order to hold from the extended radiation detector of described adjacent circuit plate.
13., it is characterized in that described restraining device comprises in order to absorb the painted of described unnecessary radiation according to the invasion sensor-based system of claim 11.
14. according to the invasion sensor-based system of claim 11, the restraining device that it is characterized in that described insertion comprises the grain surface in order to the unnecessary radiation of scattering.
15., it is characterized in that the restraining device of described insertion comprises in order to prevent that described unnecessary radiation from reflexing to the equivalent relief on the described radiation detector according to the invasion sensor-based system of claim 11.
16. according to the invasion sensor-based system of claim 11, it is characterized in that described front assembly be included on its bottom in order to another window of received radiation and in order to the described insect remover of received radiation; With
The catoptron that is positioned at described detecting device top is clashed in the described radiation that enters described sensor-based system by described bottom window, in order to described radiation is reflexed on the described radiation detector.
17., it is characterized in that describedly paintedly providing black to described restraining device according to the invasion sensor-based system of claim 13.
18. according to the invasion sensor-based system of claim 14, it is characterized in that described grain surface comprises the deviation at random repeatedly with respect to normal smooth surface, on described surface, to form a three-dimensional configuration.
19., it is characterized in that described equivalent relief comprises spike and low ebb, in order in described paddy, to cause the lossy reflection of described unnecessary radiation according to the invasion sensor-based system of claim 15.
20. an invasion sensor-based system comprises:
A front assembly that has in order to the compound lens of focused radiation;
One contains in order to the radiation detector of the described radiation of sensing with in order to the circuit board of the circuit of handling described detected radiation;
A dividing plate, first openend of dividing plate is attached to around the circumference of described radiation detector, and second open end of dividing plate is to described compound lens, in order to suppress unnecessary radiation; With
, a sealable rear assembly supporting with described front assembly can be enclosed described circuit board among described front assembly and the described rear assembly, thereby prevent that insect from entering described sensor-based system.
21. invasion sensor-based system according to claim 20, it is characterized in that described dividing plate comprises: be positioned on the second preceding end of described compound lens, the opening of the radiation of crossing in order to collectiong focusing, and one be positioned on first end, than slightly little in the second end upper shed, and in order to hold from the opening of the adjacent extended radiation detector of circuit board.
22., it is characterized in that described dividing plate comprises in order to absorb the painted of described unnecessary radiation according to the invasion sensor-based system of claim 20.
23., it is characterized in that described dividing plate comprises the grain surface in order to the unnecessary radiation of scattering according to the invasion sensor-based system of claim 20.
24., it is characterized in that described dividing plate comprises in order to prevent that described unnecessary radiation from reflexing to the equivalent relief on the described radiation detector according to the invasion sensor-based system of claim 20.
25., it is characterized in that described front assembly comprises that another is in described front assembly bottom, in order to the window of received radiation according to the invasion sensor-based system of claim 20; With
The catoptron that is positioned at the detecting device top is clashed in the described radiation that enters described sensor-based system by described bottom window, in order to described radiation is reflexed to described radiation detector.
26., it is characterized in that describedly paintedly providing black to described dividing plate according to the invasion sensor-based system of claim 22.
27. according to the invasion sensor-based system of claim 23, it is characterized in that described grain surface comprises the deviation at random repeatedly with respect to normal smooth surface, on described surface, to form a three-dimensional configuration.
28., it is characterized in that described equivalent relief comprises spike and low ebb, in order in described paddy, to cause the lossy reflection of described unnecessary radiation according to the invasion sensor-based system of claim 24.
29. a method that suppresses to invade unnecessary radiation in the sensor-based system, its step comprises:
A front assembly that has in order to the compound lens of focused radiation is provided;
Utilization is placed on the described radiation of detecting device sensing on the circuit board, and described circuit board comprises with the coupling of described detecting device, in order to handle the circuit of the described radiation that senses;
Described invasion sensor-based system is encapsulated with a rear assembly, and described rear assembly is placed adjacent to one side of described circuit board and is linked together with the periphery of described front assembly; With
A restraining device is provided in described front assembly, arrives described detecting device in order to prevent unnecessary radiation, the restraining device that is attached to described compound lens prevents that insect from entering the outer casing space of described restraining device and influencing described detecting device.
30., it is characterized in that described method is included in order to increase painted step in the material of the described restraining device that absorbs described unnecessary radiation according to the method for claim 29.
31., it is characterized in that the grain surface step that described method is included in to be provided on the described restraining device in order to the unnecessary radiation of scattering according to the method for claim 29.
32. according to the method for claim 29, it is characterized in that described method is included in provides on the described restraining device in order to prevent that unnecessary radiation from reflexing to the step of the equivalent relief on the described radiation detector.
33. according to the method for claim 29, it is characterized in that the described step that equivalent relief is provided comprises provides spike and low ebb, in order to cause the lossy reflection steps of unnecessary radiation in paddy.
34. a method that suppresses to invade radiation in the sensor-based system, its step comprises:
A front assembly that has in order to the compound lens of focused radiation is provided;
Utilization is placed on a described radiation of detecting device sensing on the circuit board, described circuit board comprise with the coupling of described detecting device in order to handle the circuit of the described radiation that senses;
Described invasion sensor-based system is encapsulated with a rear assembly, and described rear assembly is placed adjacent to one side of circuit board and is linked together at the periphery and the front assembly of described front assembly;
Utilization is attached on the described compound lens and is placed on the interior isolated closure assembly of front assembly to be got rid of insect outside radiation detector; With
Inject in the described isolated closure assembly, in order to suppress unnecessary radiation.
35. according to the method for claim 34, it is described in order to increase painted step in the material of the restraining device that absorbs unnecessary radiation to it is characterized in that described method is included in.
36., it is characterized in that the grain surface step that described method is included in to be provided on the described restraining device in order to the unnecessary radiation of scattering according to the method for claim 34.
37. according to the method for claim 34, it is characterized in that described method is included in provides on the described restraining device in order to prevent that unnecessary radiation from reflexing to the equivalent relief step on the described radiation detector.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6629097P | 1997-11-25 | 1997-11-25 | |
| US60/066,290 | 1997-11-25 | ||
| US09/047,425 | 1998-03-24 | ||
| US09/047,425 US6121876A (en) | 1998-03-24 | 1998-03-24 | System for absorbing and or scattering superfluous radiation in an optical motion sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1218242A true CN1218242A (en) | 1999-06-02 |
| CN1161725C CN1161725C (en) | 2004-08-11 |
Family
ID=26725003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981028136A Expired - Lifetime CN1161725C (en) | 1997-11-25 | 1998-07-06 | System of absorbing and/or scattering superfluous radiation in optical motion sensor |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0919970B1 (en) |
| JP (1) | JPH11232564A (en) |
| CN (1) | CN1161725C (en) |
| AU (1) | AU744055B2 (en) |
| CA (1) | CA2236813C (en) |
| DE (1) | DE69820573T2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289536A (en) * | 2016-10-26 | 2017-01-04 | 中国科学院云南天文台 | A kind of infrared temperature measurement apparatus for optical mirror plane |
| CN114333197A (en) * | 2021-12-30 | 2022-04-12 | 杭州海康威视数字技术股份有限公司 | Intrusion detector and method for mounting intrusion detector |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2345130A (en) * | 1998-12-22 | 2000-06-28 | Pyronix Ltd | Intruder sensor housing |
| KR100635843B1 (en) * | 2000-03-16 | 2006-10-18 | 오프텍스 가부시키가이샤 | intrusion detection sensor |
| US8232883B2 (en) * | 2009-12-04 | 2012-07-31 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Optical proximity sensor with improved shield and lenses |
| CN106594538A (en) | 2016-12-23 | 2017-04-26 | 浙江生辉照明有限公司 | Induction lamp and system for preventing sensor module from being mistakenly triggered |
| JP7155504B2 (en) * | 2017-10-20 | 2022-10-19 | 大日本印刷株式会社 | detection system, wavelength selective element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4268347A (en) * | 1979-01-26 | 1981-05-19 | Exxon Research & Engineering Co. | Low reflectivity surface formed by particle track etching |
| US4271358A (en) * | 1979-11-13 | 1981-06-02 | Frank Schwarz | Selective infrared detector |
| DE3233368A1 (en) * | 1982-09-08 | 1984-03-08 | Heimann Gmbh, 6200 Wiesbaden | RADIATION SMOKE DETECTORS |
| EP0135361B1 (en) * | 1983-08-12 | 1995-04-26 | I.E.I. Pty Ltd A.C.N. 053 531 212 | Apparatus for detecting particulate material in suspension |
| JPS60185920A (en) * | 1984-03-05 | 1985-09-21 | Matsushita Electric Ind Co Ltd | Image pickup device |
| AU580898B2 (en) * | 1986-02-25 | 1989-02-02 | Matsushita Electric Works Ltd. | Infrared detector |
| NL9200283A (en) * | 1992-02-17 | 1993-09-16 | Aritech Bv | MONITORING SYSTEM. |
| CH684717A5 (en) * | 1993-03-26 | 1994-11-30 | Cerberus Ag | A detector. |
| KR0151302B1 (en) * | 1995-07-13 | 1998-12-15 | 구자홍 | Sensor and sensing method by using infrared rays for place judgement |
| JPH09304175A (en) * | 1996-05-20 | 1997-11-28 | Atsumi Electron Corp Ltd | Beam sensor |
| US5790040A (en) * | 1996-12-13 | 1998-08-04 | Interactive Technologies, Inc. | Battery-operated security system sensors |
-
1998
- 1998-06-09 CA CA 2236813 patent/CA2236813C/en not_active Expired - Lifetime
- 1998-06-15 DE DE69820573T patent/DE69820573T2/en not_active Expired - Lifetime
- 1998-06-15 EP EP19980304694 patent/EP0919970B1/en not_active Expired - Lifetime
- 1998-06-23 AU AU73114/98A patent/AU744055B2/en not_active Ceased
- 1998-07-06 CN CNB981028136A patent/CN1161725C/en not_active Expired - Lifetime
- 1998-11-06 JP JP10316585A patent/JPH11232564A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289536A (en) * | 2016-10-26 | 2017-01-04 | 中国科学院云南天文台 | A kind of infrared temperature measurement apparatus for optical mirror plane |
| CN114333197A (en) * | 2021-12-30 | 2022-04-12 | 杭州海康威视数字技术股份有限公司 | Intrusion detector and method for mounting intrusion detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11232564A (en) | 1999-08-27 |
| CA2236813A1 (en) | 1999-05-25 |
| CN1161725C (en) | 2004-08-11 |
| DE69820573T2 (en) | 2004-09-30 |
| AU744055B2 (en) | 2002-02-14 |
| EP0919970B1 (en) | 2003-12-17 |
| DE69820573D1 (en) | 2004-01-29 |
| CA2236813C (en) | 2005-12-27 |
| AU7311498A (en) | 1999-06-17 |
| EP0919970A1 (en) | 1999-06-02 |
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