CN202735649U - Infrared illuminating device and infrared monitoring apparatus - Google Patents
Infrared illuminating device and infrared monitoring apparatus Download PDFInfo
- Publication number
- CN202735649U CN202735649U CN2012202851156U CN201220285115U CN202735649U CN 202735649 U CN202735649 U CN 202735649U CN 2012202851156 U CN2012202851156 U CN 2012202851156U CN 201220285115 U CN201220285115 U CN 201220285115U CN 202735649 U CN202735649 U CN 202735649U
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- infrared
- illumination device
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- rib
- sidewall
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Abstract
The utility model provides an infrared illuminating device which includes a light transmitting part which is funnel-shaped and an installation groove. A first end face of the light transmission part is provided with the installation groove, and a second end face is rectangular. The ratio of two edges which are perpendicular to each other of the second end face is b:a. The installation groove is sleeved on the outside of at least one infrared light emitting diode LED. The side walls of the installation groove reflect the infrared light transmitted by the infrared LED sleeved in the side walls to the light transmitting part, and next the infrared light transmitted to the side walls of the light transmitting part is totally reflected, and finally the totally reflected infrared light is transmitted from the second end face of the light transmitting part. An infrared monitoring apparatus which is provided with the infrared illuminating device is also provided. Through adopting the infrared illuminating device and the apparatus, the utilization rate of the transmitted infrared light is improved, and the infrared light pollution of the transmitted infrared light to the neighboring environment is avoided.
Description
Technical field
The utility model relates to the infrared imaging field, particularly a kind of infrared illumination device and infrared monitoring equipment.
Background technology
At present, infrared security device in the active infra-red imaging field is when monitoring night, main infrarede emitting diode (the Light-Emitting Diode that adopts, LED) come to provide illumination to guarded region, the camera head that infrared security device comprises receives the infrared light of object reflection in the guarded region, utilizes the infrared light of object reflection to make the object imaging.
Existing infrared safety monitoring equipment adopts miniwatt plug-in type infrared LED usually, or install lensed Infrared High-Power LED and provide illumination for guarded region, but above-mentioned two kinds of equipment outgoing all is rotational symmetry rotating lights, the hot spot that exposes to guarded region is circular light spot, the border circular areas that indicates with black lines such as Fig. 1, and the zone of camera head reception image information is generally the rectangular area, the rectangular area that indicates with black lines such as Fig. 1, will cause like this circular light spot of infrared LED outgoing and image information zone that camera head receives not to mate, thereby reduced the utilization factor of the infrared light of outgoing, and surrounding enviroment have also been caused the infrared light pollution.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of infrared illumination device, and this device can improve the utilization factor of the infrared light of outgoing.
The purpose of this utility model is to provide a kind of infrared monitoring equipment, and this equipment can improve the utilization factor of the infrared light of outgoing.
For achieving the above object, the technical solution of the utility model specifically is achieved in that
A kind of infrared illumination device, this infrared illumination device comprises: be funnelform transmittance section and mounting groove;
Be provided with described mounting groove on the first end face that described transmittance section comprises, the second end face is rectangular, and the ratio on the mutually perpendicular both sides that comprise of the second end face is that b compares a;
Described mounting groove is sheathed on outside at least one infrarede emitting diode LED;
The infrared light of the infrared LED outgoing that the sidewall of described mounting groove is sheathed with it refracts to described transmittance section, exposes to the infrared light generation total reflection of the sidewall of described transmittance section, and the infrared light after the total reflection is through the second end face outgoing of described transmittance section.
In the above-mentioned infrared illumination device, described sidewall comprises two the first sub-sidewalls and two the second sub-sidewalls;
Described two the first sub-sidewalls are relative, and the arbitrary first sub-sidewall and two the second sub-sidewalls intersect, and the intersection of the described first sub-sidewall and the second sub-sidewall is rib;
The described first sub-sidewall be rib a summit along described mounting groove while sliding and the formed surface of rib during along the sliding in the same way of described the second port, another summit of rib;
Described the second sidewall is to slide and the formed surface of rib when sliding in the same way along another side vertical with one side of described the second port, another summit of rib along the another side vertical with one side of described mounting groove in summit of rib.
In the above-mentioned infrared illumination device, the ratio on the adjacent both sides in the image information zone that described b receives for the camera head with the form fit of the second end face than a.
In the above-mentioned infrared illumination device, described rib is that the order of straight line, curvilinear equation is more than or equal to 2 luminance curve or the curve that is spliced more than or equal to 2 luminance curve by the order of straight line and at least one curvilinear equation.
Preferably, described transmittance section also comprises: be distributed in a plurality of projections of described the second end face surface or be distributed in a plurality of grooves of described the second end face surface.
In the above-mentioned infrared illumination device, described projection or groove are triangle, trapezoidal or arc along the longitudinal profile of the direction of the axis of described transmittance section.
In the above-mentioned infrared illumination device, described transmittance section is that refractive index is greater than the transparent material of the refractive index of air.
A kind of infrared monitoring equipment, this equipment comprises: camera head, substrate, a plurality of infrared LED, and at least one aforementioned arbitrary described infrared illumination device;
The camera lens that described camera head comprises passes the through hole that described substrate comprises;
Described a plurality of infrared LED is installed on the described substrate, and is distributed in around the described camera lens;
Described infrared illumination device is installed on the described substrate, and is sheathed on outside at least one described infrared LED.
In the said equipment, described infrared illumination device is installed on the described substrate by the support that is fixed in described mounting groove, perhaps by pasting described the first end face is fixed on the described substrate.
As seen from the above technical solutions, the utility model provides a kind of infrared illumination device and has been equiped with the infrared monitoring equipment of infrared illumination device, and this infrared illumination device comprises: be funnelform transmittance section and mounting groove; Be provided with mounting groove on the first end face that the transmittance section comprises, the second end face is rectangular, and the ratio on the mutually perpendicular both sides that comprise of the second end face is that b compares a; Mounting groove is sheathed on outside at least one infrarede emitting diode LED; The infrared light of the infrared LED outgoing that the sidewall of mounting groove is sheathed with it refracts to the transmittance section, expose to the infrared light generation total reflection of the sidewall of transmittance section, infrared light after the total reflection is through the second end face outgoing of transmittance section, through the orthogonal hot spot of the infrared light of the second end face outgoing, because the photosensitive region of the sensor that carries out opto-electronic conversion that the zone of the image information that camera head receives is camera head to be comprised, and this photosensitive region is generally rectangle, therefore, the rectangular light spot of having installed the infrared monitoring equipment outgoing of infrared illumination device can preferably mate with the zone of image information that camera head receives.Adopt infrared illumination device of the present utility model and equipment, can improve the rate rate of the infrared light of outgoing, avoid the infrared light of outgoing to the infrared light pollution of surrounding enviroment.
Description of drawings
Fig. 1 is the imaging schematic diagram of the infrared light of existing infrared monitoring equipment outgoing.
Fig. 2 is the stereographic map of the utility model infrared illumination device embodiment one.
Fig. 3 is the upward view of the utility model infrared illumination device embodiment one.
Fig. 4 is the utility model infrared illumination device embodiment one cut-open view along the A-A direction.
Fig. 5 is the cut-open view of the utility model infrared illumination device embodiment two.
Fig. 6 is the perspective exploded view of the utility model infrared monitoring equipment.
Fig. 7 is the imaging schematic diagram of the infrared light of the utility model infrared monitoring equipment outgoing.
Embodiment
For make the purpose of this utility model, technical scheme, and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
The utility model provides a kind of infrared illumination device, and this infrared illumination device comprises: be funnelform transmittance section and mounting groove; Be provided with mounting groove on the first end face that the transmittance section comprises, the second end face is rectangular, and the ratio on the mutually perpendicular both sides that comprise of the second end face is that b compares a; Mounting groove is sheathed on outside at least one infrarede emitting diode LED; The infrared light of the infrared LED outgoing that the sidewall of mounting groove is sheathed with it refracts to the transmittance section, exposes to the infrared light generation total reflection of the sidewall of transmittance section, and the infrared light after the total reflection is through the second end face outgoing of transmittance section.
The order that the rib that the sidewall of infrared illumination device of the present utility model comprises can be straight line, curvilinear equation is more than or equal to 2 luminance curve or the curve that is spliced more than or equal to 2 luminance curve by the order of straight line and at least one curvilinear equation; The order of curvilinear equation can be circular arc line, hyperbolic curve, para-curve etc. more than or equal to 2 luminance curve.The rib of the infrared illumination device among the embodiment one of the present utility model is a parabolical part, be provided with a plurality of in order to strengthen inhomogeneity projection on the second end face of the infrared illumination device among the embodiment two of the present utility model, example when the rib of infrared illumination device of the present utility model is other curves and embodiment one are similar, do not repeat them here.
The zone of the image information that camera head receives of mentioning among the following embodiment of the present utility model is: the cmos sensor that camera head comprises or ccd sensor etc. can be converted to the light signal that collects the photosensitive region of the sensor of electric signal, the shape of the second end face of the hyalomere that infrared illumination device of the present utility model comprises can arrange according to the shape of the photosensitive region of the sensor, because the photosensitive region of existing the sensor is generally rectangle, the rectangle of the photosensitive region coupling that is shaped as the sensor that carries out opto-electronic conversion that comprises with camera head of the second end face of the hyalomere that the infrared illumination device of therefore, mentioning among the following embodiment of utility model comprises.
Fig. 2 is the stereographic map of the utility model infrared illumination device embodiment one.Fig. 3 is the upward view of the utility model infrared illumination device embodiment one.Fig. 4 is the utility model infrared illumination device embodiment one cut-open view along the A-A direction.Now in conjunction with Fig. 2, Fig. 3 and Fig. 4, the structure of the utility model infrared illumination device is described, specific as follows:
Infrared illumination device of the present utility model comprises: be funnelform transmittance section and mounting groove 10.
Be provided with mounting groove 10 on the first end face that the transmittance section comprises, the second end face 11 that the transmittance section comprises is rectangular, and the ratio on the mutually perpendicular both sides that comprise of the second end face 11 is that b compares a.Wherein, the one side 111 in the mutually perpendicular both sides that the second end face 11 comprises and the ratio of another side 112 be b than a, perhaps the one side 112 in the mutually perpendicular both sides that comprise of the second end face 11 is that b compares a with the ratio of another side 111.Wherein, the transmittance section is that refractive index is greater than the transparent material of air refraction, such as polymethylmethacrylate (PMMA) or polycarbonate (PC).
The infrared light of the infrared LED outgoing that the sidewall of mounting groove 10 is sheathed with it refracts to the transmittance section, exposes to the infrared light generation total reflection of the sidewall of transmittance section, and the infrared light after the total reflection is through the second end face 11 outgoing of transmittance section.
Wherein, the sidewall of transmittance section of the present utility model comprises: two the first sub-sidewalls and two the second sub-sidewalls; Two the first sub-sidewalls are relative, and the arbitrary first sub-sidewall and two the second sub-sidewalls intersect, the intersection of the first sub-sidewall and the second sub-sidewall is rib, such as: the first sub-sidewall 12, the second sub-sidewall 13 and rib 121, perhaps the first sub-sidewall 13, the second sub-sidewall 12 and rib 121.
The first sub-sidewall be rib a summit along mounting groove while sliding and the formed surface of rib during along the sliding in the same way of the second port, another summit of rib.Slide along one side 101 of mounting groove 10 for a summit of rib 121 and rib 121 formed surfaces when sliding in the same way along one side 111 of the second port, another summit of rib 121 such as, the first side wall 12; Perhaps the first sub-sidewall 13 slides along one side 102 of mounting groove 10 for a summit of rib 121 and rib 121 formed surfaces when sliding in the same way along one side 112 of the second port, another summit of rib 121.
The second sidewall is to slide and the formed surface of rib when sliding in the same way along another side vertical with one side of the second end face 11, another summit of rib along the another side vertical with one side of mounting groove in summit of rib.Slide along one side 102 of mounting groove 10 for a summit of rib 121 and rib 121 formed surfaces when sliding in the same way along one side 112 of the second port, another summit of rib 121 such as, the second sidewall 13; Perhaps the second sub-sidewall 12 slides along one side 101 of mounting groove 10 for a summit of rib 121 and rib 1221 formed surfaces when sliding in the same way along one side 111 of the second port, another summit of rib 121.
Utilization factor for the infrared light that can improve outgoing, the ratio on the adjacent both sides in the image information zone that the ratio on the mutually perpendicular both sides of the second port of the present utility model receives for the camera head with the form fit of the second end face 11, the i.e. ratio on the adjacent both sides in the image information zone that receives for the camera head with the form fit of the second end face 11 than a of b.In other words, if b is relatively long in the second end face 11 limit, a is relatively short in the second end face 11 limit, and then the ratio of b and a is adjacent long edges and the ratio of minor face, the i.e. length breadth ratio in image information zone in the image information zone that receives of camera head; If b is relatively short in the second end face 11 limit, a is relatively long in the second end face 11 limit, then the ratio of b and a is the adjacent short sides in the image information zone that receives of camera head and the ratio on long limit, the i.e. ratio of the width in image information zone and length.
The height of the sidewall of the utility model infrared illumination device, namely the distance between the first end face and the second end face 11 can arrange according to the range of exposures of reality, and height and the range of exposures of sidewall are inversely proportional to, and be namely highly higher, and the scope of actual irradiation is less.
The mounting groove 10 of infrared illumination device of the present utility model can be rectangular recess, circular groove or oval-shaped groove etc.Mounting groove 10 among the embodiment one only is rectangular recess, and the groove of other shapes and embodiment's one is similar, does not repeat them here.
As shown in Figure 4, mounting groove 10 interior installings after the infrared LED of the present utility model, the infrared light of infrared LED outgoing is after the sidewall refraction of mounting groove 10, shine on the sidewall of transmittance section total reflection occurs, when refraction occurs at the M of mounting groove 10 sidewalls point in infrared light, incident angle is a, and the refraction angle is b, and incident angle a and refraction angle b satisfy n
1* sina=n
2* sinb, wherein, n
1Be the refractive index of air, n
2Refractive index for hyalomere.Light after the M of mounting groove 10 sidewalls point refraction, in the N point generation total reflection of the sidewall of hyalomere, the incident angle of ordering at N is c, according to total reflection principle, c satisfies c〉arcsin (1/n
2), the angle of the normal that the normal that N is ordered and M are ordered is e, and c=b+e, according to the relation between a, b and the c and n
2, just can determine the angle e of the normal that normal that N is ordered and M are ordered, and then according to curvilinear equation and the angle e of the rib of hyalomere, just can calculate the curvature that rib is ordered at N.According to total reflection principle, infrared LED at the incident angle of mounting groove 10 sidewalls and the refractive index n of hyalomere
2, total reflection all occurs in the curvature of each point in order to refracted to the light of the sidewall of hyalomere by mounting groove 10 in the curve of the rib of adjustment hyalomere, no longer concrete computation process is given unnecessary details at this.
Fig. 5 is the cut-open view of the utility model infrared illumination device embodiment two.What the infrared illumination device among the embodiment two was different from the infrared illumination device of embodiment one is also to be distributed with a plurality of protruding 113 on the second end face 11 of the hyalomere that the infrared illumination device among the embodiment two comprises; Wherein, projection 113 be transparent material, and the shape along the longitudinal profile of the axis of hyalomere of projection 113 can be semicircle, half elliptic, triangle, trapezoidal or except semicircle and half elliptic other arcs.
In addition, also can be distributed with a plurality of grooves on the second section 11 of the hyalomere that the utility model infrared illumination device comprises, wherein, the shape along the longitudinal profile of the axis of hyalomere of groove can be semicircle, half elliptic, triangle, trapezoidal or except semicircle and half elliptic other arc.
Fig. 6 is the perspective exploded view of the utility model infrared monitoring equipment.Now in conjunction with Fig. 6, the structure of the utility model infrared monitoring equipment is described, specific as follows:
Infrared monitoring equipment of the present utility model comprises: camera head 15, substrate 14, a plurality of infrared LED, and at least one infrared illumination device.Wherein, the camera lens that comprises of camera head 15 passes the through hole that substrate 14 comprises; A plurality of infrared LEDs are installed on the substrate 14, and are distributed in around the camera lens; The infrared illumination device is installed on the substrate 14, and is sheathed on outside at least one infrared LED.
Wherein, the infrared illumination device can be installed in by the support that is fixed in mounting groove 10 on the substrate 14, perhaps by pasting the first end face 10 is fixed on the substrate 14.
Fig. 7 is the imaging schematic diagram of the infrared light of the utility model infrared monitoring equipment outgoing.Compare with the infrared light region of existing infrared monitoring equipment outgoing shown in Figure 1, the infrared light of the utility model infrared monitoring equipment outgoing shown in Figure 7 is rectangular light spot, infrared illumination device of the present utility model can be limited in the infrared light of infrared LED outgoing in the rectangular area of the image information Region Matching that receives with camera head, can not exist the infrared light to surrounding environment to pollute, and improve the utilization factor of infrared light.
In the above-mentioned preferred embodiment of the present utility model, do not install lens subassembly at infrared LED in the existing infrared monitoring equipment for another example, the irradiation area of infrared light with the control outgoing, but the infrared illumination device of the image information Region Matching that the shape of sheathed second end face and camera head receive outside infrared LED, in the transmittance section of infrared illumination device, send the infrared light of total reflection by the second end face, be changed to rectangular light spot and expose to image acquisition region, not only improved the utilization factor of infrared light, the rectangular light spot that forms has better homogeneity, and has avoided the infrared light of surrounding environment is polluted.In addition, the shape of the sidewall of infrared illumination device of the present utility model can be obtained by rib rotation, and the order that rib of the present utility model can adopt straight line, curvilinear equation is more than or equal to 2 luminance curve or the curve that is spliced more than or equal to 2 luminance curve by the order of straight line and at least one curvilinear equation.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the scope of the utility model protection.
Claims (9)
1. an infrared illumination device is characterized in that, this infrared illumination device comprises: be funnelform transmittance section and mounting groove;
Be provided with described mounting groove on the first end face that described transmittance section comprises, the second end face is rectangular, and the ratio on the mutually perpendicular both sides that comprise of the second end face is that b compares a;
Described mounting groove is sheathed on outside at least one infrarede emitting diode LED;
The infrared light of the infrared LED outgoing that the sidewall of described mounting groove is sheathed with it refracts to described transmittance section, exposes to the infrared light generation total reflection of the sidewall of described transmittance section, and the infrared light after the total reflection is through the second end face outgoing of described transmittance section.
2. infrared illumination device according to claim 1 is characterized in that, described sidewall comprises two the first sub-sidewalls and two the second sub-sidewalls;
Described two the first sub-sidewalls are relative, and the arbitrary first sub-sidewall and two the second sub-sidewalls intersect, and the intersection of the described first sub-sidewall and the second sub-sidewall is rib;
The described first sub-sidewall be rib a summit along described mounting groove while sliding and the formed surface of rib during along the sliding in the same way of described the second port, another summit of rib;
Described the second sidewall is to slide and the formed surface of rib when sliding in the same way along another side vertical with one side of described the second port, another summit of rib along the another side vertical with one side of described mounting groove in summit of rib.
3. infrared illumination device according to claim 1 is characterized in that, the ratio on the adjacent both sides in the image information zone that described b receives for the camera head with the form fit of the second end face than a.
4. infrared illumination device according to claim 2, it is characterized in that, described rib is that the order of straight line, curvilinear equation is more than or equal to 2 luminance curve or the curve that is spliced more than or equal to 2 luminance curve by the order of straight line and at least one curvilinear equation.
5. infrared illumination device according to claim 1 is characterized in that, described transmittance section also comprises: be distributed in a plurality of projections of described the second end face surface or be distributed in a plurality of grooves of described the second end face surface.
6. infrared illumination device according to claim 5 is characterized in that, described projection or groove are triangle, trapezoidal or arc along the longitudinal profile of the direction of the axis of described transmittance section.
7. infrared illumination device according to claim 1 is characterized in that, described transmittance section is that refractive index is greater than the transparent material of the refractive index of air.
8. an infrared monitoring equipment is characterized in that, this equipment comprises: camera head, substrate, a plurality of infrared LED, and the arbitrary described infrared illumination device of at least one aforementioned claim 1 to 7;
The camera lens that described camera head comprises passes the through hole that described substrate comprises;
Described a plurality of infrared LED is installed on the described substrate, and is distributed in around the described camera lens;
Described infrared illumination device is installed on the described substrate, and is sheathed on outside at least one described infrared LED.
9. equipment according to claim 8 is characterized in that, described infrared illumination device is installed on the described substrate by the support that is fixed in described mounting groove, perhaps by pasting described the first end face is fixed on the described substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202851156U CN202735649U (en) | 2012-06-14 | 2012-06-14 | Infrared illuminating device and infrared monitoring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202851156U CN202735649U (en) | 2012-06-14 | 2012-06-14 | Infrared illuminating device and infrared monitoring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202735649U true CN202735649U (en) | 2013-02-13 |
Family
ID=47661334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202851156U Expired - Lifetime CN202735649U (en) | 2012-06-14 | 2012-06-14 | Infrared illuminating device and infrared monitoring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202735649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008568A (en) * | 2017-08-16 | 2018-05-08 | 深圳市华星光电技术有限公司 | Lens, backlight module and liquid crystal display |
| CN109973944A (en) * | 2017-12-27 | 2019-07-05 | 深圳点石创新科技有限公司 | A kind of LED lens and LED light |
-
2012
- 2012-06-14 CN CN2012202851156U patent/CN202735649U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008568A (en) * | 2017-08-16 | 2018-05-08 | 深圳市华星光电技术有限公司 | Lens, backlight module and liquid crystal display |
| CN108008568B (en) * | 2017-08-16 | 2020-05-05 | 深圳市华星光电技术有限公司 | Lens, backlight module and liquid crystal display device |
| CN109973944A (en) * | 2017-12-27 | 2019-07-05 | 深圳点石创新科技有限公司 | A kind of LED lens and LED light |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |