CN103826035A - Surveillance camera - Google Patents

Abstract

A surveillance camera comprises a rotary bracket, a built-in camera and a protective cover. A rotation control mechanism is arranged on the rotary bracket. The camera is connected with the rotation control mechanism used for causing the camera to rotate at an angle in the range of 360 degrees. The surveillance camera is characterized in that the camera has only three lenses with refractive power and includes a first convex lens of which the focal length is f1, a second biconcave lens of which the focal length is f2, a third concave-convex lens of which the focal length is f3, and an image sensor used for carrying an image sequentially from the object side to the image side; the f1-to-f2 ratio ranges from -0.2 to -1.5, and the f1-to-f3 ratio ranges from 0.45 to 1.33; and the distance d1 between the first convex lens and the second biconcave lens is 2-8mm.

Description

Monitoring camera

Technical field

The present invention relates to areas of information technology, be specifically related to a kind of safety monitoring device, particularly a kind of monitoring camera.

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.A kind of security monitoring camera with emergency power supply disclosed by the invention, 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 security monitoring camera, 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: the lens that described camera has refracting power are only three: be followed successively by from the object side to the image side: focal length is f1 the first convex lens, focal length is the second biconcave lens of f2, focal length is the 3rd concave-convex lens of f3, for accepting the imageing sensor of image, the ratio of f1/f2 is-0.2 to-1.5, the ratio of f1/f3 is 0.45 to 1.33, distance d1 between the first convex lens and the second biconcave lens is 2-8mm.

As the preferred embodiments of the present invention: be provided with binary optical structure on the surface of described the 3rd concave-convex lens, 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.

As the preferred embodiments of the present invention: described imageing sensor has the interface being connected with external image Acquisition Circuit.

Accompanying drawing explanation

The structural representation of Fig. 1 first embodiment of the invention;

The structural representation of Fig. 2 imageing sensor of the present invention.

Fig. 3 is transducer described in Fig. 2 schematic diagram under assembled state.

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:

Shown in Fig. 2, it is a kind of embodiment of the present invention.There is the inner aspheric lens group of the lens mount of being arranged at 10, camera 20, camera is connected on circuit board 40, is convenient to captured image information to be sent to timely and accurately in the control circuit on circuit board 40.

This aspheric lens group, its front and back are by two high accuracy non-spherical lenses 11, 13 compositions: front lens 11 and rear lens 13 (shown in Fig. 2), the concave part of two aspheric surface front lenss 11 and rear lens 13 all inwardly arranges, centre is equipped with the concave lens 12 adapting with front lens 11 and rear lens 13, the front concave surface of concave lens 12 is corresponding with the projection radian of front lens 11, and the back concave surface of concave lens 12 is corresponding with the projection radian of rear lens 13, the focusing spacing between lens that is arranged so that of this non-spherical lens can become very little, can greatly shorten thus the length of lens group, make the volume of whole camera can be very little.

The focal length of described front lens 11 is f1, and the focal length of concave lens 12 is f2, and the focal length of rear lens is f3, and the ratio of f1/f2 is that-0.2 to-1.5, f1/f3 ratio is 0.45 to 1.33, and the distance d1 between lens 11 and lens 12 is 2-8mm.

Preferably on the surface of lens 13, be provided with binary optical structure, for further eliminating imaging aberration.

The imaging len optical system that the present invention adopts is three lens optical systems, and its anaberration ability significantly improves compared with two lens optical systems, and the camera that practice surface has said structure parameter of the present invention is easy to realize miniaturization, and image quality is higher simultaneously.

Shown in Fig. 3, in aspheric lens group, the surperficial radian of its front lens 11 is greater than the surperficial radian of rear lens 13, so that take the image with wider visual angle, this image is reflected to very exactly on lens group camera behind simultaneously.

Above-mentioned aspheric lens group, is provided with integrated infrared low pass filter coating 14 on the non-spherical lens before it, to have suitable filter effect, guarantee captured dynamic image quality.

The described minisize pick-up head that can take colored picture rich in detail, its pedestal is made up of sheet metal and flexible material, and sheet metal forms bracing frame, and flexible material is filled bracing frame, and forms the protection to sheet metal and lens group.

Camera 20 shown in Fig. 2 is CMOS photoelectricity camera, can become 24 very color dynamic images.Captured article or scenery scioptics hole 30, front lens 11, concave lens 12, rear lens 13 are reflected on camera 20, are taken.

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 (5)

1. a 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: the lens that described camera has refracting power are only three: be followed successively by from the object side to the image side: focal length is f1 the first convex lens, focal length is the second biconcave lens of f2, focal length is the 3rd concave-convex lens of f3, for accepting the imageing sensor of image, the ratio of f1/f2 is-0.2 to-1.5, the ratio of f1/f3 is 0.45 to 1.33, distance d1 between the first convex lens and the second biconcave lens is 2-8mm.

2. 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.

3. 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.

4. monitoring camera as claimed in claim 1, described runing rest can rotate with pitch orientation in the horizontal direction.

5. monitoring camera as claimed in claim 1, described imageing sensor has the interface being connected with external image Acquisition Circuit.

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