CN103826038A - Monitoring camera with filtering element - Google Patents
Monitoring camera with filtering element Download PDFInfo
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- CN103826038A CN103826038A CN201210466328.3A CN201210466328A CN103826038A CN 103826038 A CN103826038 A CN 103826038A CN 201210466328 A CN201210466328 A CN 201210466328A CN 103826038 A CN103826038 A CN 103826038A
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Abstract
Disclosed is a monitoring camera with a filtering element. The monitoring camera includes a rotary support, a built-in camera and a protective cover. A rotary control mechanism is arranged on the rotary support. The camera is connected with the rotary control mechanism so that the camera can be controlled to be capable of rotating within a range of 360 degrees. The monitoring camera is characterized in that the built-in camera sequentially includes a first lens, the focal length of which is f1, a second lens, the focal length of which is f2, the filtering element 40 and an image sensor chip used for receiving images. The refraction index of a material used by the first lens and the second lens is 1.5 to 1.7 and the first lens satisfies a relational expression: -9<f1/f<-0.4 and the second lens satisfies a relational expression: 1.2<f2/f<4.8. The f is the focal length of the whole optical system.
Description
Technical field
The present invention relates to areas of information technology, be specifically related to a kind of monitoring camera with filter element.
Background technology
Safety monitoring technology relates to the every aspect that life is produced, for example: subway, highway communication, hotel, bank etc.
Patent documentation CN201577130U discloses a kind of security monitoring camera with emergency power supply, includes adapter unit, internal electric source memory cell and external voltage detection unit.The disclosed a kind of security monitoring camera with emergency power supply of the utility model, it can be in the time that externally fed goes wrong, can also normally carry out work, guarantee at any time can monitor the desired place of client, greatly improve the monitoring capacity of security monitoring camera, the product that has strengthened client uses impression, has guaranteed the product market share of security monitoring camera manufacturer simultaneously, is of great practical significance.
CN102724394A discloses a kind of examination hall monitoring camera, comprise the interface, audio frequency and video transducer, biometric information sensor, memory module, the control module that are connected with concrete treatment facility, wherein: audio frequency and video transducer is for catching examinee's audio/video information; Biometric information sensor is for catching examinee's biological information; Control module and the concrete treatment facility communication being connected, what obtain examinee examines biological information, and with the biological information comparison that biometric information sensor captures, to carry out examinee's authentication, and result is transferred to concrete treatment facility.The present invention makes examinee's authentication and examination monitor procedure automation, and a reliable and special examination surroundings is provided, and has facilitated the organization and management of online testing, has realized and having taken an examination reliably with minimum overhead management.
CN202385178U discloses a kind of mounting structure of monitoring camera, comprise camera hanging seat and camera, the top of camera is provided with a connection cylinder, one end of described camera hanging seat is an adaptive end of columniform camera hanging column, the inside of the adaptive end of camera hanging column is a cavity that can hold described connection cylinder, and described connection cylinder is provided with a perforation.This novel installation is simple and easy, only need position correspondence is good, utilize and connect cylinder extruding elastic button, make to seal card article by the structure between elastic button and sealing card article and eject, pass the perforation that is connected cylinder, make the space sealing between the adaptive end of bayonet socket and camera hanging column, immediately camera is fixed, in the time that needs are dismantled, again push elastic button with the larger pressure dollying headband cylinder that is dynamically connected, sealing card article is regained from perforation immediately, and camera is detachable.
But the most volumes of monitoring camera of the prior art are excessive, and inconvenience is installed, Stealth Fighter is bad, easily found by people, destroy.And be difficult to take into account volume and image quality.
Summary of the invention
For addressing the deficiencies of the prior art and deficiency, the invention provides a kind of monitoring camera with filter element, can solve many deficiencies of the prior art and defect, there is many-sided advantage.
Concrete technical scheme is as follows:
A kind of monitoring camera, comprise: runing rest, built-in camera, protective cover, on runing rest, be provided with rotation control mechanism, camera is connected with described rotation control mechanism, can be with the scope rotation of 360 degree for controlling described camera, it is characterized in that: described built-in camera comprises successively: focal length is f1 first lens, focal length is the second lens of f2, filter element 40, for accepting the image sensor chip of image, the refractive index of the use material of first lens and the second lens is 1.5 to 1.7, and this first lens meets relational expression :-9 < f1/f <-0.4, the second lens meet relational expression: 1.2 < f2/f < 4.8, f is the focal length of whole optical system.
As the preferred embodiments of the present invention, the object space surface convex surface of described first lens, image interface is concave surface.
As the preferred embodiments of the present invention, the second lens object space surface is concave surface, and image interface is convex surface.
As the preferred embodiments of the present invention, at least one surface of described first lens and the second lens is aspheric surface.
As the preferred embodiments of the present invention, the upper Binary Diffractive Optics structure that forms at least one surface of described first lens and the second lens.
As the preferred embodiments of the present invention, on the object space surface of described first lens, be formed with Binary Diffractive Optics structure, for eliminating system aberration.
As the preferred embodiments of the present invention, on the surface of described the 3rd concave-convex lens, be provided with binary optical structure, for further eliminating imaging aberration.
As the preferred embodiments of the present invention, be coated with the optical function coating that positive reflective reverse side is transparent on the surface of described protective cover.
As the preferred embodiments of the present invention, described runing rest can rotate with pitch orientation in the horizontal direction.
Accompanying drawing explanation
The structural representation of Fig. 1 first embodiment of the invention.
The structural representation of Fig. 2 camera of the present invention.
Fig. 3 is the optical texture schematic diagram of the camera described in Fig. 2.
Fig. 4 is the structural representation of second embodiment of the invention.
Fig. 5 is the structural representation of third embodiment of the invention.
Fig. 6 is the decomposition texture schematic diagram of camera of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Fig. 1, Fig. 4 and Fig. 5, a kind of security monitoring camera described in one embodiment of the invention, comprise the electronic zoom camera 1 that is connected with supervising device, for fix and drive that electronic zoom camera 1 rotation control mechanism that rotate and supervising device is connected can level and the runing rest 2 of pitch rotation, for containing the protective cover 3 of described electronic zoom camera 1 and runing rest 2.
For having the existing disguise of the current existing electronic monitoring camera head of solution, flexibility, counnter attack monitoring capacity and protectiveness and soil resistance all very poor; installation difficulty is large, all bad etc. problems of observation visual angle and picture quality, the protective cover 3 of the present invention housing that adopts the single sided perspective glass that front is reflective, reverse side is transparent of the anti-destructive that is coated with titanium or Zirconium oxide nanometer transparent coating to make of serving as reasons.
Like this, making can be by being installed on camera in protective cover, can make camera avoid the pollution of wind and weather and dirt, a more safe and reliable protection is provided and strengthens its attractive, decorative to camera, again camera being hidden in more reliably to outside can't see in the protective cover of the inside, make monitoring camera " change bright for dark ", not only reduce the negative impact intuitively that has reduced that monitoring camera produces the common legal public; Simultaneously, also can improve widely the counnter attack monitoring capacity of camera, can produce huge deterrent force to the one's share of expenses for a joint undertaking of breaking laws and commit crime, contain its delinquent psychology and behavior, playing " allow good person feel at ease, allow bad person soul-stirring " builds harmonious society, effectively prevents delinquent effect.
In addition, can also reduce social security generally with the managerial cost of investment of monitoring camera and maintenance care expense, and the camera that can be suitable for coming into operation in a large number installs transformation, meanwhile, be also applicable to the camera monitoring device of personalized demand of installing.Wherein, in order to make the present invention can be suitable under various different occasions or personalized installation requirements, the structure of above-mentioned protective cover 3 can have multiple, as shown in Figure 1, its structure can be square body or cylinder or bullet or the hemisphere of half sealing, and its peristome is provided with the outer flanging 311 with installing hole 312; Now, this protective cover 3 can be mounted on assigned address by the double-screw bolt of the installing hole 312 through its outer flanging 311.
Or as shown in Figure 4, the structure of described protective cover 3 can be also: it comprises can overlap the base 32 and the cover body 31 that set as one mutually, wherein said base 32 is that a bottom has interior flanging 321, top has the ring set body of the outer flanging 322 with installing hole 323, described cover body 31 is one semi-enclosed reflective by front, the housing that the single sided perspective glass that reverse side is transparent is made, and the peristome of this housing is provided with outer flanging 311, now, described cover body 31 is placed in pedestal 32 and by its outer flanging 311 and connects as one with the overlap joint of the interior flanging 321 of pedestal 32, and the bolt by the installing hole 323 through the outer flanging 322 of pedestal 32 is mounted on assigned address.
Meanwhile, the shape of described base 32 and cover body 31 can be the square body of assembling or the shape and structure of cylinder or cone or spherical etc. of can cooperatively interacting.Or as shown in Figure 53, the structure of described protective cover 3 can also be one to dock square body or cylinder or cone or the spherical of the enclosed shape forming by upper and lower two halves housing 31,32; Now, described upper half-shell 31 inside are provided with an interior bracket 311 that is used for installing camera rotating bracket, and interior bracket 311 and upper half-shell 31 are mounted on assigned address by the bolt of the installing hole 312 that is provided with through upper half-shell 31 tops, and housing lower half 32 is integrated with the screw thread spinning mutually spinning that upper half-shell 31 is provided with by two halves shell nozzle portion.In addition, described protective cover 3 also can also be for other is that fail to mention one by one and structure simple and reasonable for structure, easy to install.
Described camera, has following architectural feature:
Refer to the optical structure chart that Figure 3 shows that camera of the present invention.It sequentially comprises from subject side: have negative diopter and the protruding first lens 10 to subject; Aperture optical gate 20; There is positive diopter and be protrudingly the second half-moon-shaped lens 30 to imaging surface; The filter element 40 of the light of filter specific wavelengths, this filter element 40 can be infrared ray cut filter element, for visual light imaging, or visible ray cut-off filter element, in order to filter visible ray, and the wavelength of the light passing through is 780 to 1050nm, be applied to the infrared ray imaging of invisible light; And in order to receive by the imaging of aforementioned filter element infrared ray invisible light; and this imaging is converted into the imageing sensor 50 (imaging surface) of digital signal; this imageing sensor 50 comprises plane protection lens 51 and image sensor 52; this image sensor 52 can be charge coupled cell (ChargeCoupled Device; or CMOS (Complementary Metal Oxide Semiconductor) (ComplementaryMetal OxideSemiconductor, CMOS) CCD).
The refractive index of the use material of aforementioned first lens and the second lens is 1.5 to 1.7, in order to wide-angle refraction incident ray, and this first lens 10 meets relational expression :-9 < f1/f <-0.4, and the second lens 30 meet relational expression: 1.2 < f2/f < 4.8; Wherein f1 is the optical focal length of first lens 20, and f2 is the optical focal length of the second lens 30, and f is the focal length of micro optical sampling image device whole system.
On at least one surface, surface of described first lens and the second lens, form Binary Diffractive Optics structure, be preferably provided with described Binary Diffractive Optics structure on the object space surface of first lens, its object is effectively to eliminate system aberration, improves image quality.
The camera that these two lens form meets formula 1.6 < L/f < 4.9, and wherein, L is the optics overall length from micro optical sampling image device, and first lens 10 is in the face of the surface of subject is to the distance that becomes image focus; F is the focal length of micro optical sampling image device whole system.
This first lens 10 includes in the face of the first surface 11 of subject and in the face of second 12 of imaging surface, and described first surface 11 is for being the convex surface of convex surface configuration with respect to subject, and second 12 for being the depression of the configuration that caves in respect to imaging surface.These second lens 30 include in the face of the 3rd 31 of subject and in the face of the fourth face 32 of imaging surface, described the 3rd 31 for be the depression of the configuration that cave in respect to subject, fourth face 32 is the convex surface that is convex surface configuration with respect to imaging surface.And aforementioned first, second, third and fourth face 11,12,31,32 is all aspheric surface, corrects by this spherical aberration and aberration comprehensively, and has the characteristic of low tolerance susceptibility.
Combine by aforementioned structure, subject the maximum imaging through two lens and on this imageing sensor 50 highly maximum meet following relational expression: 0.8 < d/f < 3, wherein d is the maximum imaging height on this imageing sensor, and f is the focal length of micro optical sampling image device whole system.
In enforcement, first lens 20 and the second lens 30 are the round lens shape (as shown in Figure 2) of at present general market product, also can be that circle is removed two Symmetry Edges and is the bad arc lens of strip, can be applicable to the optical camera lens device of different shell models.
In enforcement, this first lens 10 is negative lens, its first surface 11 is convex surface configuration with respect to subject, in order to the external incident beam of the acceptance of super wide-angle, thereby make light beam on second 12, can give full play to by this aspheric function, correct aberration and lower tolerance susceptibility, also this device making has super wide angle, and capture angle can reach more than 100 °.Obtain desired incident beam by this aperture optical gate 20 again, incident beam carries out wealthy bundle through the 3rd 31 of depression who is with respect to subject the configuration that caves on these second lens 30 again, fourth face 32 is the positive lens of convex surface configuration with respect to imaging surface, make the light beam larger area that can distribute on fourth face 32.That is to say, incident beam is through the wealthy bundle of the 3rd 31, thereby makes the light beam larger area that can distribute on fourth face 32, and the semilune of these the second lens 30 structure can be given full play to aspheric function, corrects aberration and lowers tolerance susceptibility.
Adopt aspheric surface design except rectifiable spherical aberration and aberration, also to contribute to shorten the overall length of lens optical system, and first and second lens 20,30 all can adopt plastic material, be conducive to eliminate aberration and alleviate camera lens weight, whole optical system is only used two plastic lenss, be applicable to a large amount of production, and its tolerance susceptibility is low, the degree of freedom (Depth offield) that adds the depth of field is enough large, combined tolerances is less than the available focal depth range of optical focus, when application, do not need the action of focusing, be easy to manufacture group vertical, meet the requirement of scale of mass production.And in order to filter visible ray, only by the filter element 40 of infrared ray invisible light, form a kind of camera that can carry out to the thermal radiation of human body capture.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not subject to the restriction of above-mentioned using method; that in above-mentioned using method and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.
Claims (10)
1. one kind has the monitoring camera of filter element, comprise: runing rest, built-in camera, protective cover, on runing rest, be provided with rotation control mechanism, camera is connected with described rotation control mechanism, can be with the scope rotation of 360 degree for controlling described camera, it is characterized in that: described built-in camera comprises successively: focal length is f1 first lens, focal length is the second lens of f2, filter element 40, for accepting the image sensor chip of image, the refractive index of the use material of first lens and the second lens is 1.5 to 1.7, and this first lens meets relational expression :-9 < f1/f <-0.4, the second lens meet relational expression: 1.2 < f2/f < 4.8, f is the focal length of whole optical system.
2. monitoring camera as claimed in claim 1, the object space surface convex surface of described first lens, image interface is concave surface.
3. monitoring camera as claimed in claim 1, the second lens object space surface is concave surface, image interface is convex surface.
4. monitoring camera as claimed in claim 1, at least one surface of described first lens and the second lens is aspheric surface.
5. monitoring camera as claimed in claim 1, the upper Binary Diffractive Optics structure that forms at least one surface of described first lens and the second lens.
6. monitoring camera as claimed in claim 1, is formed with Binary Diffractive Optics structure on the object space surface of described first lens, for eliminating system aberration.
7. monitoring camera as claimed in claim 1, is provided with binary optical structure on the surface of described the 3rd concave-convex lens, for further eliminating imaging aberration.
8. monitoring camera as claimed in claim 1, is coated with the optical function coating that positive reflective reverse side is transparent on the surface of described protective cover.
9. monitoring camera as claimed in claim 1, described runing rest can rotate with pitch orientation in the horizontal direction.
10. monitoring camera as claimed in claim 1, described imageing sensor has the interface being connected with external image Acquisition Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210466328.3A CN103826038A (en) | 2012-11-17 | 2012-11-17 | Monitoring camera with filtering element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210466328.3A CN103826038A (en) | 2012-11-17 | 2012-11-17 | Monitoring camera with filtering element |
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| Publication Number | Publication Date |
|---|---|
| CN103826038A true CN103826038A (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210466328.3A Pending CN103826038A (en) | 2012-11-17 | 2012-11-17 | Monitoring camera with filtering element |
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| CN (1) | CN103826038A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963856A (en) * | 2020-08-05 | 2020-11-20 | 浙江德广信电子科技股份有限公司 | High-refresh high-gray-scale small-space spliced LED display screen |
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2012
- 2012-11-17 CN CN201210466328.3A patent/CN103826038A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963856A (en) * | 2020-08-05 | 2020-11-20 | 浙江德广信电子科技股份有限公司 | High-refresh high-gray-scale small-space spliced LED display screen |
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Application publication date: 20140528 |