CN206497246U - A kind of total refraction day and night high-definition monitoring camera lens - Google Patents

Abstract

The utility model relate to a kind of total refraction day and night high-definition monitoring camera lens, including mirror head outer shell, camera lens outer snap ring, lens group, it is spaced block, camera lens inner casing, snap ring in camera lens, connector, lens group is provided with the inside of mirror head outer shell, camera lens outer snap ring is provided with the outside of lens group one end, camera lens outer snap ring connection lens shell, camera lens inner casing is provided with the outside of the lens group other end, camera lens inner casing is arranged on the inside of mirror head outer shell, snap ring in camera lens is provided with the outside of lens group one end, snap ring connection lens inner casing in camera lens, connector is provided with the outside of mirror head outer shell, interval block is provided with the inside of lens group, the reasonable selection that the utility model passes through environmental protection optical glass material, optimization, system is realized without thermalization, image quality high-resolution and high-resolution function, by reducing the requirement to technological level, realize system architecture simply compact, piece number is few, transmittance is high, back work distance is from length, the function of preferable school aberration characteristic.

Description

A kind of total refraction day and night high-definition monitoring camera lens

Technical field

The utility model is related to camera lens field, specifically a kind of total refraction day and night high-definition monitoring mirror Head.

Background technology

Camera lens are the most critical equipment of video system, and the complete machine that its quality-advantage directly affects video camera refers to Mark, camera lens is equivalent to the crystalline lens of human eye, if without crystalline lens, human eye can't see any object；If without camera lens, then The image that camera is exported；It is exactly a piece of of vast expanse of whiteness, is exported without clearly image, this and our household video cameras and photograph The principle of camera is consistent.

By being divided into fixed aperture tight shot in structure：Simply, the focusing adjustment that camera lens only one of which can be manually adjusted Ring, left rotation and right rotation ring can make the image being imaged on CCD target surfaces most clear, not have aperture adjustment ring, and aperture can not be adjusted, entered Entering the luminous flux of camera lens can not be changed by changing camera lens factor, can only be adjusted by changing the illuminance of visual field, structure Simply, it is cheap；Manual iris tight shot：Manual iris tight shot adds aperture than fixed aperture tight shot and adjusted The domain, Aperture Range can easily adapt to be shot live ground illuminance, aperture adjustment typically from F1.2 or F1.4 to contract fully By artificially carrying out manually, illuminance is than more uniform, and price is relatively inexpensive；Automatic diaphragm fixed focus lens：It is fixed in manual iris Increase the micromachine of a gear joint transmission in the aperture adjustment ring of zoom lens, and the shielding of 3 or 4 cores is drawn from drive circuit Line, is connected on video camera auto iris interface block, when entering the light flux variations of camera lens, the electricity that video camera CCD target surfaces are produced Corresponding change occurs for lotus, so that video level changes, produces a control signal, is transmitted to auto iris mirror Head, is rotated forward or backwards accordingly so that the motor in camera lens is done, and completes adjusted size of task；Manual iris focus mirror Head：Focal length is variable, there is a Focussing ring, and the focal length of camera lens can be adjusted within the specific limits, and its variable ratio is generally 2 ~3 times, focal length is generally 3.6 ~ 8mm., can be by adjusting the zoom ring of camera lens manually in practical application, generally it is convenient to select The city rink corner in monitored ground market, but be very continually manually adjusting zoom after under camera installation locations are fixed Inconvenient, therefore, after Practical Completion, the focal length of manual zoom camera lens is typically seldom adjusted.Only play tight shot；From Dynamic aperture motorized zoom lenses：Two micromachines, one of motor and mirror are added compared with automatic diaphragm fixed focus lens The zoom cyclization of head, can control the focal length of camera lens upon its rotation；The focusing cyclization of another motor and camera lens, when its controlled turn The focusing of camera lens can be completed when dynamic, still, due to adding two motors and lens set number increases, the volume of camera lens also accordingly increases Greatly, electronic Tri-Chargable lens simply will adjust the control of motor to aperture by automatic compared with auto iris motorized zoom lenses Control is changed to be controlled manually by controller.

Therefore, a system can be realized without thermalization, image quality high-resolution to overcome the shortcomings of that above-mentioned technology is designed And high-resolution, simple and compact for structure, piece number is less, and transmittance is high, and back work distance is high from a kind of long total refraction day and night Clear monitoring camera, exactly inventor's problem to be solved.

Utility model content

In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of total refraction day and night high-definition monitoring mirror Head, can realize system without thermalization, image quality high-resolution and high-resolution, simple and compact for structure, piece number is less, and transmittance is high, Back work distance is from long function.

The utility model solves the technical scheme that its technical problem used：A kind of total refraction day and night high-definition monitoring Snap ring, connector in camera lens, including mirror head outer shell, camera lens outer snap ring, lens group, interval block, camera lens inner casing, camera lens, it is described It is provided with the inside of mirror head outer shell on the outside of lens group, described lens group one end and is provided with camera lens outer snap ring, the camera lens outer snap ring connects Connect and camera lens inner casing be provided with the outside of mirror head outer shell, the lens group other end, the camera lens inner casing is arranged on the inside of mirror head outer shell, It is provided with the outside of described lens group one end in snap ring in camera lens, the camera lens outside snap ring connection lens inner casing, the mirror head outer shell Side is provided with the inside of connector, the lens group and is provided with interval block.

Further, the connector is connected by screw thread with mirror head outer shell.

Further, the lens group include lens A, lens B, lens C, lens D, lens E, lens F, lens G, lens H, Lens I, the lens E, lens F gluing units into cemented doublet A, the lens H, lens I gluing units into cemented doublet B, Remaining lens is single element lens, and the lens A is falcate concavees lens, and material therefor is H-F4, and the lens B is that concave-concave is saturating Mirror, material therefor is H-ZBAF5, and the lens C is curved month type convex lens, and material therefor is H-ZF3, and the lens D is biconvex Lens, material therefor is H-FK61, and the lens E is biconvex lens, and material therefor is H-FK61, and the lens F is that concave-concave is saturating Mirror, material therefor is H-QF6A, and the lens G is biconvex lens, and material therefor is H-ZK5, and the lens H is biconvex lens, Material therefor is H-ZK5, and the lens I is curved month type concavees lens, and material therefor is H-ZF62.

Further, the lens focus 8mm, 44 degree of the angle of visual field, F values 1.3, target surface CCD, 1/3rd inches, imaging Compose visible ray and infrared.

Further, the lens group technical data is：Lens A radius of curvature 29.0623mm, 8.243125mm, away from From 1.2mm, 5mm, the lens B radius of curvature -10.51876mm, 27.10068mm, apart from 1.279623mm, 1.256507mm, the lens C radius of curvature -215.6786mm, -14.64743 mm, apart from 3.455492mm, 3.255593 Mm, the lens D radius of curvature 40.27171mm, -19.62596 mm, apart from 5mm, 1mm, the cemented doublet A curvature half The mm of footpath 13.28812, -19.18781 mm, 12.26887 mm, the mm of distance 6.310721,0.7 mm, 4.660122 mm, institute The mm of lens G radius of curvature 24.9687, -33.19975 mm are stated, away from 3 mm, 0.1 mm, the cemented doublet B radius of curvature 19.7617 mm, -12.74124 mm, -62.94073 mm, the mm of distance 4,0.86 mm, 10.56205 mm.

Further, described nine lens of lens group are divided into six groups, and the lens B, lens C are one group, the lens E, thoroughly Mirror F is one group, and the lens H, lens I are one group, and remaining single element lens is independent in groups, by interval block between every two groups of lens Separately fixed, the position limiting structure of the lens D, lens E respectively on the inside of mirror head outer shell, camera lens inner casing is separately fixed.

The beneficial effects of the utility model are：

1. the utility model is by the reasonable selection of environmental protection optical glass material, optimization, system is realized without thermalization, imaging Quality high-resolution and high-resolution function.

It is simply compact that 2. the utility model handle by reducing the requirement to technological level, realizes system architecture, piece number Few, transmittance is high, and back work distance is from length, the function of preferable school aberration characteristic.

Brief description of the drawings

Fig. 1 is the utility model lens construction figure.

Fig. 2 is the utility model lens group light refraction schematic diagram.

Fig. 3 is the utility model point range figure.

Fig. 4 is the utility model MTF curve figure.

Fig. 5 is the utility model ray aberration curve map

Description of reference numerals：1- mirror head outer shells；2- camera lens outer snap rings；3- lens groups；4- intervals block；5- camera lens inner casings； Snap ring in 6- camera lenses；7- connectors；8- lens A；9- lens B；10- lens C；11- lens D；12- lens E；13- lens F；14- Lens G；15- lens H；16- lens I.

Embodiment

With reference to specific embodiment, the utility model is expanded on further, it should be appreciated that these embodiments are merely to illustrate this Utility model rather than limitation scope of the present utility model.In addition, it is to be understood that reading the content of the utility model instruction Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values also fall within application Appended claims limited range.

It is the utility model lens construction figure, the light of lens group 3 refraction schematic diagram referring to Fig. 1 to 2, a kind of total refraction is day and night In dual-purpose high-definition monitoring camera lens, including mirror head outer shell 1, camera lens outer snap ring 2, lens group 3, interval block 4, camera lens inner casing 5, camera lens Snap ring 6, connector 7, the inner side of mirror head outer shell 1 are provided with the outside of lens group 3, the one end of lens group 3 and are provided with camera lens outer snap ring 2, mirror Camera lens inner casing 5 is provided with the outside of the head connection lens shell 1 of outer snap ring 2, the other end of lens group 3, camera lens inner casing 5 is arranged on outside camera lens It is provided with the outside of the inner side of shell 1, the one end of lens group 3 in snap ring 6 in camera lens, camera lens outside the connection lens inner casing 5 of snap ring 6, mirror head outer shell 1 Side is provided with connector 7, and the inner side of lens group 3 is provided with interval block 4, and connector 7 is connected by screw thread with mirror head outer shell 1.

Lens group 3 includes lens A8, lens B9, lens C10, lens D11, lens E12, lens F13, lens G14, lens H15, lens I16, lens E12, lens F13 gluing units are into cemented doublet A8, lens H15, lens I16 gluing units gluing in pairs Lens B9, remaining lens are single element lens, and lens A8 is falcate concavees lens, and material therefor is H-F4, and lens B9 is that concave-concave is saturating Mirror, material therefor is H-ZBAF5, and lens C10 is curved month type convex lens, and material therefor is H-ZF3, and lens D11 is biconvex lens, Material therefor is H-FK61, and lens E12 is biconvex lens, and material therefor is H-FK61, and lens F13 is biconcave lens, material used Expect for H-QF6A, lens G14 is biconvex lens, material therefor is H-ZK5, and lens H15 is biconvex lens, and material therefor is H- ZK5, lens I16 are curved month type concavees lens, and material therefor is H-ZF62.

Lens focus 8mm, 44 degree of the angle of visual field, F values 1.3, target surface CCD, 1/3rd inches, imaging spectral visible ray and red Outside, the technical data of lens group 3 is：Lens A8 radius of curvature 29.0623mm, 8.243125mm, apart from 1.2mm, 5mm, lens B9 Radius of curvature -10.51876mm, 27.10068mm, apart from 1.279623mm, 1.256507mm, lens C10 radius of curvature - 215.6786mm, -14.64743 mm, apart from 3.455492mm, 3.255593 mm, lens D11 radius of curvature 40.27171mm, -19.62596 mm, apart from 5mm, 1mm, the mm of cemented doublet A8 radius of curvature 13.28812, -19.18781 Mm, 12.26887 mm, the mm of distance 6.310721,0.7 mm, 4.660122 mm, the mm of lens G14 radius of curvature 24.9687 ,- 33.19975 mm, away from, 3 mm, 0.1 mm, the mm of cemented doublet B9 radius of curvature 19.7617, -12.74124 mm, - 62.94073 mm, the mm of distance 4,0.86 mm, 10.56205 mm.

3 nine lens of lens group are divided into six groups, and lens B9, lens C10 are one group, and lens E12, lens F13 are one group, thoroughly Mirror H15, lens I16 are one group, and remaining single element lens is independent in groups, separate fixed by interval block 4 between every two groups of lens, thoroughly Mirror D11, lens E12 are separately fixed by the position limiting structure of mirror head outer shell 1, the inner side of camera lens inner casing 5 respectively.

In order to realize visible ray and infrared light can blur-free imaging, meet day and night and the larger ring of temperature change Border can be practical requirement, using spherical mirror and cemented doublet, totally six groups of nine environment-friendly type optical lenses are solved the utility model Spectral band is wide, the problem of achromatism is difficult, by system optimization, solves in large temperature range system without thermalization Problem so that this optical system has reached high-res, image quality high-resolution and high-resolution, this product is reduced to technique The requirement of level so that system architecture is simply compact, piece number is less, and transmittance is high, and back work distance is from length, with preferable school picture Poor characteristic, the design for visible ray and infrared band provides a set of brand-new optical system, and the utility model devises one Plant simple in construction, size is smaller, it is easy to the mechanical structure of assembling, and long back work distance is being reduced into from being conducive to system to debug This while, reliability was also improved.

It is the utility model point range figure referring to Fig. 3, in the imaging process of geometric optics, by many bar light a little sent Line, due to the presence of aberration, makes the intersection point of itself and image planes no longer converge after optical system imaging, but forms one It is distributed in a range of dispersion pattern, referred to as point range figure, is weighed in point range figure using the dense degree of these points The method of the image quality of optical system is referred to as spot diagram, to big aberration optical system, utilizes the light in geometric optics Tracking method can accurately represent the imaging contexts of an object, and its practice is that the half of optical system entrance pupil is divided into greatly The homalographic small patches of amount, and from object point and through each small patches center light, it is believed that be represent pass through entrance pupil The light energy of upper small patches, on imaging surface, the idea distribution density of Geometrical Optics just represents the light intensity or brightness of picture point, because This is to same object point, and the light line number of trace is more, and the point subnumber in image planes is more, accurately can more reflect in image planes Light intensity distributions situation, experiment shows, in big aberration optical system, with photic-energy transfer determined by geometrical ray trace and reality The light intensity distributions of border imaging contexts quite meet.

It is the utility model MTF curve referring to Fig. 4, the intensity distribution function of object plane can pass through Fourier expansion Many frequencies, the amplitude cosine function different with initial phase are resolved into, these cosine functions are called the cosine primitive of original function, The image quality of optical system is evaluated using optical transfer function, is made up of the spectrum of various frequencies based on object is regarded as , that is, the optical field distribution functional expansion of object into Fourier space or the form of Fourier integral, intensity on object plane In image planes it is also a cosine distribution after optical system by the cosine primitive of cosine distribution, but both frequency, initial positions Mutually it can all be changed with contrast, the amplitude transmission factor of optical system and position phase transmission factor are different and change with spatial frequency μ Become, they are all μ functions, if optical system is regarded as linear invariant system, object through optical system imaging, its as The reduction of contrast and phase passage are with the different and different of frequency, and this functional relation is called optical transfer function by we, Therefore, optical transfer function is the transmission capacity for reflecting object different frequency composition, is mutually transmitted with position by amplitude transfer function Function is constituted, the details transmission situation of HFS reflection object；The level transmission situation of intermediate-frequency section reflection object；Low frequency portion Divide the profile transmission situation of reflection object, amplitude transfer function：Represent the sinusoidal intensity distribution function of various different frequencies through light Learn after system imaging, the attenuation degree of its contrast evaluates image quality using MTF curve.

It is the utility model ray aberration curve map referring to Fig. 5, ray aberration curve is the light on pupil coordinate function Line aberration, the data of drawing be light in face intersection point coordinate and chief ray in face intersection point coordinate difference, ray aberration curve It is the aberration of two sections by pupil, is not whole pupil, being mainly used for of ray aberration curve is deposited in judgement system In which kind of aberration.

Claims (6)

1. a kind of total refraction day and night high-definition monitoring camera lens, it is characterised in that：Including mirror head outer shell, camera lens outer snap ring, lens Lens group, the lens are provided with the inside of group, interval block, camera lens inner casing, snap ring, connector in camera lens, the mirror head outer shell It is provided with the outside of camera lens outer snap ring, the camera lens outer snap ring connection lens shell, the lens group other end and sets on the outside of group one end Camera lens inner casing is equipped with, the camera lens inner casing is arranged on the inside of mirror head outer shell, card in camera lens is provided with the outside of described lens group one end It is provided with the inside of connector, the lens group and sets on the outside of snap ring connection lens inner casing in ring, the camera lens, the mirror head outer shell There is interval block.

2. a kind of total refraction day and night high-definition monitoring camera lens according to claim 1, it is characterised in that：The connector It is connected by screw thread with mirror head outer shell.

3. a kind of total refraction day and night high-definition monitoring camera lens according to claim 1, it is characterised in that：The lens group It is glued including lens A, lens B, lens C, lens D, lens E, lens F, lens G, lens H, lens I, the lens E, lens F Cemented doublet A is constituted, the lens H, lens I gluing units are into cemented doublet B, and remaining lens is single element lens, described Mirror A is falcate concavees lens, and material therefor is H-F4, and the lens B is biconcave lens, and material therefor is H-ZBAF5, described Mirror C is curved month type convex lens, and material therefor is H-ZF3, and the lens D is biconvex lens, and material therefor is H-FK61, described Mirror E is biconvex lens, and material therefor is H-FK61, and the lens F is biconcave lens, and material therefor is H-QF6A, the lens G For biconvex lens, material therefor is H-ZK5, and the lens H is biconvex lens, and material therefor is H-ZK5, and the lens I is curved Month type concavees lens, material therefor is H-ZF62.

4. a kind of total refraction day and night high-definition monitoring camera lens according to claim 1, it is characterised in that：The camera lens is burnt Away from 8mm, 44 degree of the angle of visual field, F values 1.3, target surface CCD, 1/3rd inches, imaging spectral visible ray and infrared.

5. a kind of total refraction day and night high-definition monitoring camera lens according to claim 3, it is characterised in that：The lens group Technical data is：Lens A radius of curvature 29.0623mm, 8.243125mm, apart from 1.2mm, 5mm, the lens B curvature Radius -10.51876mm, 27.10068mm, apart from 1.279623mm, 1.256507mm, the lens C radius of curvature - 215.6786mm, -14.64743 mm, apart from 3.455492mm, 3.255593 mm, the lens D radius of curvature 40.27171mm, -19.62596 mm, apart from 5mm, 1mm, the mm of cemented doublet A radius of curvature 13.28812, - 19.18781 mm, 12.26887 mm, the mm of distance 6.310721,0.7 mm, 4.660122 mm, the lens G radius of curvature 24.9687 mm, -33.19975 mm, away from, 3 mm, 0.1 mm, the mm of cemented doublet B radius of curvature 19.7617, - 12.74124 mm, -62.94073 mm, the mm of distance 4,0.86 mm, 10.56205 mm.

6. a kind of total refraction day and night high-definition monitoring camera lens according to claim 1 or 3, it is characterised in that：It is described Nine lens of microscope group are divided into six groups, and the lens B, lens C are one group, and the lens E, lens F are one group, the lens H, thoroughly Mirror I is one group, and remaining single element lens is independent in groups, is separately fixed by interval block between every two groups of lens, the lens D, thoroughly Position limiting structures of the mirror E respectively on the inside of mirror head outer shell, camera lens inner casing is separately fixed.