CN207622983U - Double light path high quality detection device - Google Patents

Abstract

The utility model is related to a kind of double light path high quality detection devices, the detection device includes light source one, resolution chart one, close-up, mounting base, camera, light source two, resolution chart two and reflective mirror, the reflective mirror can move back and forth along horizontal optical axis direction between operating position and off-position, the reflective mirror is moved to operating position when middle burnt video monitoring pick-up lens and focal length video monitoring pick-up lens image quality detect, and the reflective mirror is moved to off-position when short focus video monitoring pick-up lens image quality detects.The detection device and method meet the detection of the video monitoring pick-up lens image quality of 2.5~75mm focal ranges by double light path and three groups of close-ups, the addition of close-up does not influence the video monitoring pick-up lens good image quality in school not only, and can be nearly object distance elongate, remote object distance is shortened, the miniaturization of detection device is realized.

Description

Double light path high quality detection device

Technical field

The utility model is related to optical field, more particularly to a kind of double light path high quality detection device.

Background technology

As video frequency camera sensor enters the arrival in million total pixel above high-definition image quality epoch comprehensively, as therewith The image quality of mating critical component --- pick-up lens also requires to greatly improve that (enterprise requirements reach 500-1000 ten thousand at present Left and right).Since its yield is very big, the image quality of this kind of camera lens how is effectively detected and is closed as domestic and international optics circle The focus of note.Currently, it from the point of view of having industry examination criteria, adapting to different focal length demand, intuitive and cost performance, uses Resolution test chucking method is relatively applicable in.Especially bound directly with video camera, can more embody camera lens camera system at As effect.By replacing color definition chart, it can also accomplish that other methods are difficult to the effect for the visual inspection camera lens chromatic rendition accomplished Fruit.

Principle using television chart method is：Light source for reflection illumination or transmitted light source (such as LED panel light source) are shone Bright reflectance chart or umbrella shape resolution figure, through camera lens direct imaging to be measured video camera target surface (CCD or cmos device) On.By electro-optic conversion, over the display it can be seen that the image of test card.It is tested and is provided according to industry, when test should meet such as Lower essential condition：1, the image of formed reflectance chart must expire target；2, the contrast of formed standard testing card graphic must 8 stages must be reached；3, the illumination on reflectance chart is in 1000Lux or so.In the case where meeting above-mentioned condition, the energy from display Tell TV resolution (its unit that the minimum spacing between the adjacent two lines in horizontal or vertical direction is camera lens to be measured It is tv line/frame).

Since video camera is to be rectangle (horizontal length to the scanning of target surface：Vertical length is usually 4：3 or 16：9), because This horizontal TV resolution is not equal to vertical TV resolution.If the image quality and TV of the video camera and display chosen Resolution ratio is far above the TV resolution needed for camera lens to be measured, it is believed that the result seen on a display screen is mirror to be measured Highest TV resolution and its attainable best television imaging quality.According to measuring and calculating, 4：3 format situations, camera shooting Relationship between the total pixel number and tv line/frame of device is substantially：Nominal 300,000 pixel, central vision TV resolution be not low In 200 tv lines/frame；1300000 pixels are not less than 400 tv lines/frame；2000000 pixels are not less than 600 tv lines/frame；300 Ten thousand pixels are not less than 1000 tv lines/frame；5000000 pixels are not less than 1500 tv lines/frame；8000000 pixels are not less than 2000 Tv line/frame.

Currently, using the technical solution of television chart method both at home and abroad, monochromatic light road is all used.It is formed in order to meet The image of reflectance chart must expire the requirement of target, in the image quality for the various focal lengths and different distance for detecting same camera lens When, it is necessary to object distance and image distance are adjusted repeatedly, and detection efficiency is very low, almost helpless to multifocal and zoom lens.It is detecting When length, mid-focal length camera lens, it can only be solved with the size for increasing test card or with the method for elongating object distance, greatly increase detection and set Standby space makes it difficult to be widely used.

Utility model content

The purpose of the utility model is to overcome disadvantage mentioned above, provide a kind of double light path high quality detection device, the detection Device meets the inspection of the video monitoring pick-up lens image quality of 2.5~75mm focal ranges by double light path and three groups of close-ups It surveys, the addition of close-up does not influence the video monitoring pick-up lens good image quality in school not only, but also object distance that can be nearly is drawn It is long, remote object distance is shortened, the miniaturization of detection device is realized.

The utility model is realized in this way：

A kind of double light path high quality detection device, it is characterised in that：The detection device includes light source one, resolution chart One, close-up, the mounting base for placing video monitoring pick-up lens, video camera, light source two, resolution chart two and anti- Light microscopic, the light source one, resolution chart one, close-up, mounting base, video camera are set in turn in along light incident direction On vertical optical axis, the light source two, resolution chart two are set in turn in perpendicular with vertical optical axis along light incident direction Horizontal optical axis on, for the horizon light axle position between close-up and resolution chart one, the close-up includes close-up One, close-up two and close-up three, the video monitoring pick-up lens include short focus video monitoring pick-up lens, middle burnt video prison Control pick-up lens and focal length video monitoring pick-up lens, the close-up one, close-up two and close-up three are respectively used to short focus Detection and the energy of video monitoring pick-up lens, middle burnt video monitoring pick-up lens and focal length video monitoring pick-up lens image quality It is switched on the operating position of vertical optical axis according to the camera lens correspondence detected, the reflective mirror can be along horizontal optical axis direction Move back and forth between operating position and off-position, the reflective mirror is in middle burnt video monitoring pick-up lens and focal length video Be moved to operating position when monitoring camera lens imaging quality testing, reflective mirror at operating position with horizontal optical axis and vertical light Axis is in that the center of 45 ° and reflective mirror and the center of video monitoring pick-up lens optical axis coincide, and the reflective mirror is regarded in short focus Off-position is moved to when frequency monitoring camera lens imaging quality testing, the reflective mirror is located at short focus in off-position Outside the peripheral field of video monitoring pick-up lens.

In order to further realize the miniaturization of equipment, each optical element of the detection device need to meet the following conditions：

7 ＜ Δs, 1 ＜ 10；

15 ＜ Δs, 2 ＜ 30；

15 ＜ Δs, 3 ＜ 30；

Wherein, Δ 1 is the first face of short focus video monitoring pick-up lens to the interval of close-up one；Δ 2 is middle burnt video prison Control the first face of pick-up lens to the interval of close-up two；Δ 3 is the first face of focal length video monitoring pick-up lens to close-up three Interval.

Observation judge is carried out for the ease of testing staff, the detection device further includes being connected with video camera for showing Show the high definition LCD display for the CMOS epigraphs for being imaged on video camera.

Preferably, the close-up one include the first lens and with the first lens form contiguity gluing unit second thoroughly Mirror, the close-up two include the third lens and form the 4th lens of contiguity gluing unit, the close-up with the third lens Three include the 5th lens and form the 6th lens of contiguity gluing unit with the 5th lens, and the optical element for forming each close-up must The following conditions must be met：

0.01 ＜ Pcd12-Pcd11 ＜ 0.02；20 ＜ R12/R11 ＜, 26 ‥ ‥ ‥ are 1.

0.28≦|Φ1/R11-Φ1/R12| ‥‥‥②

1.50 ＜ n11 ＜ 1.54；60 ＜ ν, 11 ＜, 65 ‥ ‥ ‥ are 3.

1.60 ＜ n12 ＜ 1.626；35 ＜ ν, 12 ＜, 38 ‥ ‥ ‥ are 4.

0.008 ＜ Pcd22-Pcd21 ＜ 0.012；4 ＜ | R22/R21 | 6 ‥ ‥ ‥ of ＜ are 5.

0.4≦|Φ2/R21-Φ2/R22| ‥‥‥⑥

1.50 ＜ n21 ＜ 1.54；60 ＜ ν, 21 ＜, 65 ‥ ‥ ‥ are 7.

1.60 ＜ n22 ＜ 1.63；56 ＜ ν, 22 ＜, 61 ‥ ‥ ‥ are 8.

0.001 ＜ Pcd32-Pcd31 ＜ 0.006；8 ＜ | R32/R31 | 12 ‥ ‥ ‥ of ＜ are 9.

0.4≦|Φ3/R31-Φ3/R32| ‥‥‥⑩

Wherein, Pcd11, Pcd12, Pcd21, Pcd22, Pcd31, Pcd32 are respectively the phase of the lens of the first lens~the 6th To abbe number；R11, R12, R13, R21, R22, R23, R31, R32, R33 are respectively each face of lens of the first lens~the 6th Radius；1~Φ of Φ 3 are respectively the bore of one~close-up of close-up three；N11, n12, n21, n22, n31, n32 are respectively first The refractive index of the lens of lens~the 6th；ν 11, ν 12, ν 21, ν 22, ν 31, ν 32 are respectively the Abbe of the lens of the first lens~the 6th Coefficient.

Preferably, first lens are convex-concave positive lens, and second lens are convex-concave negative lens；The third lens For convex-concave positive lens, the 4th lens are convex-concave negative lens；5th lens are concave-convex positive lens, and the 6th lens are Concave-convex negative lens.

Preferably, the focal range of the short focus video monitoring pick-up lens is 2.5~8mm, the middle burnt video monitoring The focal range of pick-up lens is 8~20mm, and the focal range of the focal length video monitoring pick-up lens is 20~75mm.

Preferably, first lens and the third lens are made of H-K9L, and second lens and the 4th lens use H-F4 is made, and the 5th lens are made of H-ZK3, and the 6th lens are made of H-ZK10.

In order to facilitate adjusting video monitoring pick-up lens with respect to the distance between close-up and Switch Video monitoring camera Camera lens, the mounting base include rack, be slidably connected in rack and can with respect to the lifting seat that rack slides up and down, be set to machine Between frame and lifting seat for limit lifting seat with respect to the locking device that rack slides up and down, be slidably connected on lifting seat and Can OQ t seat move left and right sliding seat, be set on sliding seat for pulling sliding seat OQ t seat to move left and right Pull rod and two be arranged in left-right direction in turning for placing the camera lens of video monitoring pick-up lens on sliding seat Adapter ring, the video camera are fixedly arranged on lifting seat lower surface, are equipped between the video camera and lifting seat for adjusting video camera The micromatic setting of distance between video monitoring pick-up lens.

For the prior art, the utility model has the following advantages：

(1) double light path high quality detection device provided by the utility model is met by double light path and three groups of close-ups The detection of the video monitoring pick-up lens image quality of 2.5~75mm focal ranges, the addition of close-up do not influence video monitoring not only The pick-up lens good image quality in school, and object distance that can be nearly is elongated, and remote object distance is shortened, detection device is realized Miniaturization；

(2) double light path high quality detection device provided by the utility model can not only meet testing staff and require mirror to be measured The demand that head is placed vertically, and detect quickly, effectively, intuitively；

(3) double light path high quality detection device provided by the utility model can be realized all over the screen in corresponding video camera device Testing standard condition and under the premise of using different size and the excessive television chart of area less, focal length camera lens inspection to be measured When survey, it can accomplish that common longest distance of the television chart from close-up does not surpass 2 meters；In detection ultra-wide angle shorter focal length mirror to be measured When head, it can accomplish to be not less than 0.15 meter with the shortest distance of 2# editions or less the test card from close-up, detection device can be made to minimize While accomplish to detect it is easy to operate；

(4) double light path high quality detection device provided by the utility model, the opposite color that close-up passes through control glass pair In the case that scattered error makes the second order spectrum of close-up less big in proper range, increasing the radius in the 2nd face simultaneously makes it towards waiting for The influence for reducing off-axis aberration to camera lens to be measured is played, while being conducive to spherical aberration on axis and chromosphere in the direction for surveying Lens Entrance Pupil The correction of difference；

(5) double light path high quality detection device provided by the utility model, close-up is by selecting a certain range glass pair Refractive index difference, be conducive to control second order spectrum, spherochromatism and combined focal length value；

(6) double light path high quality detection device provided by the utility model uses the concept of " center focal length ", with one Close-up deacclimatizes the video monitoring pick-up lens of certain focal range, both can guarantee image quality, in turn avoids frequently replacing close-shot The trouble of mirror can only meet the inspection of the video monitoring pick-up lens image quality of 2.5~75mm focal ranges with three groups of close-ups It surveys；

(7) double light path high quality detection device provided by the utility model, using big target surface video camera and " electron waves door " Method, make test card pattern over the display and can show different camera lenses to be measured to realize that image expires the requirement of target, play a machine Multi-purpose effect；

(8) double light path high quality detection device provided by the utility model, using sliding seat, the push-pull configuration of rod-pulling type, It is not only convenient for the switching of camera lens, and is solved because camera lens is long, close-up third face rise ambassador camera lens is at operating position The problem of being not placed into.

Description of the drawings

The utility model is described in further detail in conjunction with the embodiments with reference to the accompanying drawings：

Fig. 1 is that the utility model is shown using the structure that vertical optical path is detected video monitoring pick-up lens image quality It is intended to；

Fig. 2 is that the utility model is shown using the structure that horizontal optical path is detected video monitoring pick-up lens image quality It is intended to；

Fig. 3 is the optical imaging concept schematic diagram that the utility model is added after close-up；

Fig. 4 is the structural schematic diagram of the utility model close-up one；

Fig. 5 is the structural schematic diagram of the utility model close-up two；

Fig. 6 is the structural schematic diagram of the utility model close-up three；

Fig. 7 is the structural schematic diagram that the utility model adjusts switching device；

Fig. 8 is that the utility model is shown using the pattern that electronics " wave door " technology is formed on big target surface camera photography device It is intended to；

Fig. 9 is the MTF curve figure and geometrical aberration that video monitoring pick-up lens focal length ft '=4mm is added after close-up one Figure, wherein Fig. 9 a are MTF curve figure, and Fig. 9 b~Fig. 9 e are geometrical aberration figure；

Figure 10 is that video monitoring pick-up lens focal length ft '=4mm removes the MTF curve figure (l=after close-up one 2300mm)；

Figure 11 is that video monitoring pick-up lens focal length ft '=6mm is added and removes the MTF curve figure after close-up one, Middle Figure 11 a are the MTF curve figure that close-up one is added, and Figure 11 b are the MTF curve figure for removing close-up one；

Figure 12 is that video monitoring pick-up lens focal length ft '=2.8mm is added and removes the MTF curve figure after close-up one, Wherein Figure 12 a are the MTF curve figure that close-up one is added, and Figure 12 b are the MTF curve figure for removing close-up one；

Figure 13 is that the MTF curve figure after close-up two and geometric image is added in video monitoring pick-up lens focal length ft '=12mm Difference figure, wherein Figure 13 a are MTF curve figure, and Figure 13 b~Figure 13 e are geometrical aberration figure；

Figure 14 is that video monitoring pick-up lens focal length ft '=12mm removes the MTF curve figure (l=after close-up two 8430mm)；

Figure 15 is that video monitoring pick-up lens focal length ft '=16mm is added and removes the MTF curve figure after close-up two, Middle Figure 15 a are the MTF curve figure that close-up two is added, and Figure 15 b are the MTF curve figure for removing close-up two；

Figure 16 is that video monitoring pick-up lens focal length ft '=8mm is added and removes the MTF curve figure after close-up two, Middle Figure 16 a are the MTF curve figure that close-up two is added, and Figure 16 b are the MTF curve figure for removing close-up two；

Figure 17 is that the MTF curve figure after close-up three and geometric image is added in video monitoring pick-up lens focal length ft '=35mm Difference figure, wherein Figure 17 a are MTF curve figure, and Figure 17 b~Figure 17 e are geometrical aberration figure；

Figure 18 is that video monitoring pick-up lens focal length ft '=35mm removes the MTF curve figure (l=after close-up three 1980mm)；

Figure 19 is that video monitoring pick-up lens focal length ft '=25mm is added and removes the MTF curve figure after close-up three, Middle Figure 19 a are the MTF curve figure that close-up three is added, and Figure 19 b are the MTF curve figure for removing close-up three；

Figure 20 is that video monitoring pick-up lens focal length ft '=70mm is added and removes the MTF curve figure after close-up three, Middle Figure 20 a are the MTF curve figure that close-up three is added, and Figure 20 b are the MTF curve figure for removing close-up three.

In above-mentioned figure：The abscissa for being related to MTF curve figure is characterized frequency, and coordinate unit is：Line is right/mm；Its vertical seat Mark song line is visual field (0 ω, 0.7 ω, 1 ω) in the mtf value of unified different characteristic frequency.It is related to the spherical aberration of geometrical aberration figure Curve and astigmatism curve, the unit of abscissa are：mm；The abscissa unit of ratio chromatism, curve is：μm；Meridian and the sagitta of arc are special The tangent value for the angular aperture that the abscissa of linearity curve is is up to 1；Ordinate be disperse value in Figure 5 maximum value be ± 20 μm, Maximum value is ± 100 μm in fig. 13, maximum value is ± 10 μm in fig. 17.

Symbol description in figure：1, light source one, 2, resolution chart one, 3, mounting base, 31, rack, 32, lifting seat, 33, Locking device, 34, sliding seat, 35, pull rod, 36, switching circle, 4, video camera, 5, light source two, 6, resolution chart two, 7, anti- Light microscopic, 8, vertical optical axis, 9, horizontal optical axis, 10, close-up one, 101, the first lens, the 102, second lens, 11, close-up two, 111, the third lens, the 112, the 4th lens, 12, close-up three, 121, the 5th lens, the 122, the 6th lens, 13, short focus video prison Control pick-up lens, 14, middle burnt video monitoring pick-up lens, 15, focal length video monitoring pick-up lens, 16, LCD display, A, point Resolution test card, B, the virtual image, R, close-up, T, video monitoring pick-up lens, P, video camera target surface.

Specific implementation mode

The utility model content is described in detail with specific embodiment with reference to the accompanying drawings of the specification：

It is a kind of double light path high quality detection device provided by the utility model as shown in Figure 1 and Figure 2, it is characterised in that：It should Detection device includes light source 1, resolution chart 1, close-up R, the mounting base for placing video monitoring pick-up lens T 3, video camera 4, light source 25, resolution chart 26 and reflective mirror 7, the light source 1, resolution chart 1, close-shot Mirror R, mounting base 3, video camera 4 are set in turn in along light incident direction on vertical optical axis 8, the light source 25, resolution test Block 26 to be set in turn in along light incident direction on the horizontal optical axis 9 perpendicular with vertical optical axis 8, the horizontal optical axis 9 is located at Between close-up R and resolution chart 1, the close-up R includes close-up 1, close-up 2 11 and close-up three 12, the video monitoring pick-up lens T include short focus video monitoring pick-up lens 13, middle burnt video monitoring pick-up lens 14 and length Burnt video monitoring pick-up lens 15, the close-up 1, close-up 2 11 and close-up 3 12 are respectively used to short focus video prison Control detection and the energy of pick-up lens 13, middle burnt video monitoring pick-up lens 14 and 15 image quality of focal length video monitoring pick-up lens It is switched on the operating position of vertical optical axis 8 according to the camera lens correspondence detected, for the convenience of test, close-up one 10, close-up 2 11 and close-up 3 12 can be attached separately to one can be on the converter that vertical optical axis rotates, or fill respectively In two pore structures on the rectilinear translation guide rail that can be pushed and pulled, the reflective mirror 7 can along 9 direction of horizontal optical axis in operating position and Move back and forth between off-position, the reflective mirror 7 is in middle burnt video monitoring pick-up lens 14 and the camera shooting of focal length video monitoring 15 image quality of camera lens is moved to operating position when detecting, reflective mirror 7 at operating position with horizontal optical axis 9 and vertical optical axis 8 It is in that the center of 45 ° and reflective mirror 7 and the center of video monitoring pick-up lens T optical axises coincide, the reflective mirror 7 is regarded in short focus 13 image quality of frequency monitoring camera camera lens is moved to off-position when detecting, and the reflective mirror 7 is located in off-position Outside the peripheral field of short focus video monitoring pick-up lens 13.

The detection device of the utility model is added all the way, two light on the basis of traditional monochromatic light road optical texture Road is designed to be mutually perpendicular to bifocal path structure, and by mobile reflective mirror therebetween, two focal range phases can be met by being allowed to be formed The requirement being mutually connected.It can play the advantages of monochromatic light road optical texture placed vertically and meet camera lens to be measured and place vertically and realize Fast and automatically load and unload the requirement of camera lens to be measured.In scheme, the light path of vertical direction is used to detect the camera lens to be measured of short focus range, The camera lens to be measured of focal length range during horizontal direction light path is used to detect.Since the angle of view to be measured of middle focal length range is smaller, Therefore the reflective mirror size needed for conversion light path is greatly reduced so that in the standard resolution of camera lens to be measured and vertical optical path electricity Depending on there is certain space to place moveable reflective mirror between test card.In addition, between camera lens to be measured and test card, it is additionally arranged One group of close-up, its effect are that close object distance is elongated, and remote object distance is shortened.But its addition cannot influence (or influence Very little) the camera lens to be measured good image quality in school.To solve quick detection multifocal and the long and short burnt end of zoom lens ( Middle focal length can be detected) image quality and reduce the problem in detection device space.

The selection of light source 1 and light source 25 is the format determination by test card.It is selected in the utility model detection device Be transparent film test card format, therefore, its lighting source use light emission luminance distribution uniform flat LED lamp screen. The size of screen is determined by the full-size of used test card.In the present embodiment, in vertical optical path direction, we choose Full test card size be 2# plates (16：Its size is 400x711mm when 9 specification), its lighting source LED light screen thus Size should be in 450x800mm or more.In horizontal line direction, the full test card size that we choose is 1.5# plates (16：9 Its size is 300x540mm when specification), 1# plates are (16：When 9 specification its size be 200x358mm) and 0.5# plates (16：9 rule Its size is 100x270mm when lattice).It is two kinds of 2000 tv lines/frame and 4000 tv lines/frame to be equipped with highest TV resolution The transparent film test card of specification.The size of its lighting source LED light screen should be in 350x600mm or more thus.Their volume Power is determined substantially in 25-50W or so, and light emission luminance is in 2000lm-3500lm or so.In order to ensure the illumination on test card face In 1000lux or so, while not making illuminance of ccd fpa is too strong to cause saturated phenomenon, it is desirable that lighting source brightness is adjustable.In this implementation In example, resolution chart is clipped in the middle using the specific glass of two agreement that contracts a film or TV play to an actor or actress 0.8mm, wherein a piece of is the glass of high transillumination Mingguang City Glass, another is anti-dazzle glas, can prevent the interference of ambient light in this way, allows equipment that can have bright place to use, is not necessarily to Use darkroom.

In order to further realize the miniaturization of equipment, each optical element of the detection device need to meet the following conditions：

7 ＜ Δs, 1 ＜ 10；

15 ＜ Δs, 2 ＜ 30；

15 ＜ Δs, 3 ＜ 30；

Wherein, Δ 1 is short focus video monitoring pick-up lens 13 first face to the interval of close-up 1；Δ 2 is that middle coke regards Frequency monitoring camera camera lens 14 first face to the interval of close-up 2 11；Δ 3 is that 15 first face of focal length video monitoring pick-up lens is arrived The interval of close-up 3 12.

Observation judge is carried out for the ease of testing staff, the detection device further includes being used for what video camera 4 was connected Display is imaged on the high definition LCD display 16 of the CMOS epigraphs of video camera 4.The utility model uses big target surface size (1/ 1.8 〞), the numeral camera system based on the CMOS high-definition cameras of 6,000,000 or more total pixels.Can also according to the needs of user, Using the special camera system of the target surface size as camera lens to be measured.Purpose using big target surface is:One, adapt to current security protection and The trend that traffic monitoring and industrial robot pick-up lens develop to big target surface；Two, machine testing can be imaged from 1/4 〞 with one To the image quality of all kinds of camera lenses to be measured of 1/1.8 〞 standards, the effect of playing a tractor serves several purposes.In order to each standard of accurate characterization Size, utility model device using " electron waves door " method, i.e., formed in target surface by software technology as shown in Figure 8 Graduation pattern.Wherein, it be 1/3 〞, c be 1/2.5 〞, d is the feature ruler that 1/2 〞, e is 1/1.8 〞 difference target surface standards that a, which is 1/4 〞, b, Very little frame.Purpose using this pattern is corresponding test card pattern to be made to meet when detecting the camera lens to be measured of different target surface standards While the requirement of full target, the lines of graduation pattern is made not press pattern crucial in test card as possible.Surpass 6,000,000 using total pixel The purpose of (1/1.8 〞) numeral camera system be：One, when detecting the camera lens to be measured of smaller target surface size, its total pixel is still 3,000,000 or more high definition level can so be reached.Up to 3,000,000 when such as 1/4 〞；Up to 4,000,000 when 1/3 〞；Up to 4,670,000 when 1/2.5 〞；1/ Up to 5,330,000 etc. when 2 〞.Two, it can be connected with the high-performance computer with network function, record and when necessary transmission measurement at any time Data.Also it is to further realize intelligent automatic detection to lay the first stone.In the present embodiment, 25 〞, clarity are used up to 4K's High definition LCD computer displays.It, can more preferably to see the attainable practical highest TV resolution of camera lens to be measured clearly when first batch of detection With the function of computer partial enlargement.

As Figure 4-Figure 6, the close-up 1 includes the first lens 101 and forms contiguity glue with the first lens 101 The second lens 102 being combined, the close-up 2 11 include the third lens 111 and form contiguity gluing with the third lens 111 4th lens 112 of group, the close-up 3 12 include the 5th lens 121 and form contiguity gluing unit with the 5th lens 121 The 6th lens 122, the optical element for forming each close-up must satisfy the following conditions：

0.01 ＜ Pcd12-Pcd11 ＜ 0.02；20 ＜ R12/R11 ＜, 26 ‥ ‥ ‥ are 1.

0.28≦|Φ1/R11-Φ1/R12|‥‥‥②

1.50 ＜ n11 ＜ 1.54；60 ＜ ν, 11 ＜, 65 ‥ ‥ ‥ are 3.

1.60 ＜ n12 ＜ 1.626；35 ＜ ν, 12 ＜, 38 ‥ ‥ ‥ are 4.

0.008 ＜ Pcd22-Pcd21 ＜ 0.012；4 ＜ | R22/R21 | 6 ‥ ‥ ‥ of ＜ are 5.

0.4≦|Φ2/R21-Φ2/R22|‥‥‥⑥

1.50 ＜ n21 ＜ 1.54；60 ＜ ν, 21 ＜, 65 ‥ ‥ ‥ are 7.

1.60 ＜ n22 ＜ 1.63；56 ＜ ν, 22 ＜, 61 ‥ ‥ ‥ are 8.

0.001 ＜ Pcd32-Pcd31 ＜ 0.006；8 ＜ | R32/R31 | 12 ‥ ‥ ‥ of ＜ are 9.

0.4≦|Φ3/R31-Φ3/R32|‥‥‥⑩

Wherein, Pcd11, Pcd12, Pcd21, Pcd22, Pcd31, Pcd32 are respectively the 101~the 6th lens of the first lens 122 relative dispersion coefficient；R11, R12, R13, R21, R22, R23, R31, R32, R33 are respectively the first lens the 101~the 6th The radius in 122 each face of lens；1~Φ of Φ 3 are respectively the bore of one 10~close-up of close-up 3 12；n11、n12、n21、n22、 N31, n32 are respectively the refractive index of the 101~the 6th lens 122 of the first lens；ν 11, ν 12, ν 21, ν 22, ν 31, ν 32 are respectively the The Abbe number of the 101~the 6th lens 122 of one lens.

1. purpose that condition is set is to control the relative dispersion difference of glass pair in proper range, makes the close-up of short focus section Second order spectrum it is less big in the case of, increasing the radius in the 2nd face simultaneously makes it towards the direction of Lens Entrance Pupil to be measured, plays reduction Off-axis aberration influences camera lens to be measured (especially ultra-wide angle short focus).Meanwhile being conducive to the correction of spherical aberration and spherochromatism on axis.

2. purpose that condition is set is to ensure certain edging coefficient, is conducive to adding for the 1st eyeglass of close-up of short focus section Work.

3., 4. purpose that condition is set is the refractive index difference by selecting a certain range glass pair, for controlling two level Spectrum, spherochromatism and combined focal length value.

5. purpose that condition is set is to control the relative dispersion difference of glass pair in proper range, makes the close-up of middle burnt section Second order spectrum it is less big in the case of, increasing the radius in the 2nd face simultaneously makes it towards the direction of Lens Entrance Pupil to be measured, plays drop Low off-axis aberration influences camera lens to be measured.Meanwhile being conducive to the correction of spherical aberration and spherochromatism on axis.

6. purpose that condition is set is to ensure certain edging coefficient, is conducive to adding for the 1st eyeglass of close-up of middle burnt section Work.

7., 8. purpose that condition is set is the difference by selecting a certain range glass refractive index, for controlling two level Spectrum, spherochromatism and combined focal length value.

9. purpose that condition is set is since the close-up focal length of focal length section is very long, by the relative dispersion for controlling glass pair Official post second order spectrum becomes very little.Due to the field angle very little of focal length section, the radius in each face is not needed towards Lens Entrance Pupil to be measured Direction, the radius in the second face can be reduced in this way, be conducive to processing while, it is advantageous to the correction of spherical aberration on axis and spherochromatism.

10. purpose that condition is set is to ensure certain edging coefficient, is conducive to adding for the 1st eyeglass of close-up of focal length section Work.

ConditionThe purpose of setting is the difference by selecting a certain range glass refractive index, for controlling two level Spectrum, spherochromatism and combined focal length value.

Preferably, first lens 101 are convex-concave positive lens, and second lens 102 are convex-concave negative lens；Described Three lens 111 are convex-concave positive lens, and the 4th lens 112 are convex-concave negative lens；5th lens 121 are concave-convex just saturating Mirror, the 6th lens 122 are concave-convex negative lens.

Preferably, the focal range of the short focus video monitoring pick-up lens 13 is 2.5~8mm, the middle burnt video prison The focal range for controlling pick-up lens 14 is 8~20mm, the focal range of the focal length video monitoring pick-up lens 15 is 20~ 75mm。

Preferably, first lens 101 and the third lens 111 are made of H-K9L, second lens 102 and the Four lens 112 are made of H-F4, and the 5th lens 121 are made of H-ZK3, and the 6th lens 122 use H-ZK10 It is made.

It is regarded with respect to the distance between close-up and switching as shown in fig. 7, adjusting video monitoring pick-up lens for convenience Frequency monitoring camera camera lens, the mounting base 3 include rack 31, are slidably connected in rack 31 and can be slided up and down with respect to rack 31 Lifting seat 32, be set between rack 31 and lifting seat 32 for limiting lifting seat 32 with respect to the lock that rack 31 slides up and down Determine device 33, be slidably connected on lifting seat 32 and can OQ t seat 32 move left and right sliding seat 34, be set to sliding seat On 34 for pulling pull rod 35 that 34 OQ t seat 32 of sliding seat moves left and right and two to be arranged in left-right direction In the camera lens switching circle 36 for placing video monitoring pick-up lens T on sliding seat 34, the video camera 4 is fixedly arranged on lifting seat Be equipped on 32 lower surfaces, between the video camera 4 and lifting seat 32 for adjust video camera 4 and video monitoring pick-up lens T it Between distance micromatic setting.In the present embodiment, lifting seat 32 is slidably connected to by line rail sliding block in rack 31, the sliding Seat 34 is slidably connected to by sliding block, guide rod on lifting seat 32.

The method for detecting video monitoring pick-up lens image quality using double light path high quality detection device, includes the following steps：

A. when video monitoring pick-up lens T is short focus video monitoring pick-up lens 13, reflective mirror 7 is moved to positioned at short Off-position outside the peripheral field of burnt video monitoring pick-up lens 13, close-up 1 is switched on vertical optical axis 8, so Light source 1 is opened afterwards, and resolution chart 1 forms a virtual image B in object space by close-up 1 compared with distant location, described Virtual image B is imaged on by short focus video monitoring pick-up lens 13 on the CMOS of video camera 4；

Testing staff judges the camera shooting of short focus video monitoring according to the test card pattern situation presented on the CMOS of video camera 4 The image quality of camera lens 13 or the image quality for going out short focus video monitoring pick-up lens 13 with image intelligent software interpretation；

B. when video monitoring pick-up lens T is middle burnt video monitoring pick-up lens 14, reflective mirror 7 is moved to and level Optical axis 9 and vertical optical axis 8 are in 45 ° and the center of reflective mirror 7 is mutually be overlapped with the center of middle burnt 14 optical axis of video monitoring pick-up lens Close-up 2 11 is switched on vertical optical axis 8 by the operating position of conjunction, then opening light source 25, on resolution chart 26 Pattern by reflective mirror 7 enter close-up 2 11, and by close-up 2 11 object space compared with distant location formed a virtual image B, the virtual image B are imaged on by middle burnt video monitoring pick-up lens 14 on the CMOS of video camera 4；

Testing staff's burnt video monitoring camera shooting in being judged according to the test card pattern situation presented on the CMOS of video camera 4 The image quality of camera lens 14 or the image quality for going out middle burnt video monitoring pick-up lens 14 with image intelligent software interpretation；

C. when video monitoring pick-up lens T is focal length video monitoring pick-up lens 15, reflective mirror 7 is moved to and level The center of optical axis 9 and vertical optical axis 8 in 45 ° and reflective mirror 7 is mutually be overlapped with the center of 15 optical axis of focal length video monitoring pick-up lens Close-up 3 12 is switched on vertical optical axis 8 by the operating position of conjunction, then opening light source 25, on resolution chart 26 Pattern by reflective mirror 7 enter close-up 3 12, and by close-up 3 12 object space compared with distant location formed a virtual image B, the virtual image B are imaged on by focal length video monitoring pick-up lens 15 on the CMOS of video camera 4；

Testing staff judges the camera shooting of focal length video monitoring according to the test card pattern situation presented on the CMOS of video camera 4 The image quality of camera lens 15 or the image quality for going out focal length video monitoring pick-up lens 15 with image intelligent software interpretation.

In the step a, the interval of short focus video monitoring pick-up lens 13 first face to close-up 1 is adjusted to 7~ 10mm；

In the step b, the interval of middle burnt video monitoring pick-up lens 14 first face to close-up 2 11 is adjusted to 15 ~30mm；

In the step c, the interval of focal length video monitoring pick-up lens 15 first face to close-up 3 12 is adjusted to 15 ~30mm.

As shown in Figure 3, wherein A is the scenery (being resolution chart in the present invention) of close-up, it is placed in closely Take the photograph in the front focus of mirror R, B be scenery A through close-up R at " virtual object face ".T is camera lens to be detected, passes through it " virtual object Face " B is imaged on from focus thereafter as on the video camera target surface P with a distance from Xt '.If the focal length of close-up is close, the to be detected mirrors of f ' The focal length ft ' of head T；The distance of scenery A to close-up is | L is close |；The first faces camera lens T to be detected to the distance of virtual image B, to close Take the photograph the interval of mirror and be respectively to the distance of its front principal plane | Lt |, △, OHt.Cause | Lt |》OHt, it is believed that | Lt |+OHt is approximate It is equal to | Lt |.If the size of object plane is Φ A, close-up " virtual object face " size is Φ B, and video camera target surface size is Φ C.They it Between enlargement ratio between relationship be set as | M |=| Φ A |/| Φ B |, | MR |=| Φ A |/| Φ P |, | MT |=| Φ B |/| Φ P |

Following equation can be exported according to optical imagery relationship：

(1) the magnifying power between close-up image face:| M |=| 1- (| Lt |-△)/f ' is close |

(2) enlargement ratio relationship is：| MR |=| M | * | MT |

(3) the focal length of close-up：F ' is close=| MR | * (| Lt |-△) * ft '/[(| Lt |-ft ')-| MR | * ft ']

(4) distance between close-up and scenery (scenery is actually TV resolution measuring and displaying card)：

| L is close |=| (- | Lt |+△) * f ' are close/(- | Lt |+△+f ' are close) |

In above formula | Lt |, △, ft ' be that can set known quantity.According to actually detected requirement, when camera lens T's to be detected Focal length ft ' at 2 to 6mm, | Lt | desirable 2 to 3.5m；When ft ' is 8 to 16mm, | Lt | desirable 2.5 to 4.5m；When ft ' exists When 25mm or more, | Lt | desirable 3.5m or more.△, because field angle is very big, can make close-up in shorter focal length camera lens to be detected Bore it is very big, the handling that are too small and being unfavorable for camera lens to be detected for being unfavorable for processing, but taking generally take 7 to 10mm or so； To ft ' in 8mm or more camera lenses to be detected, 15mm or more can use.In necessity with TV resolution chart test method Condition to be TV resolution test card must expire target through camera lens to be measured at the picture in video camera device target surface, therefore | MR | can be with From the size of selected test card and picture pick-up device by being calculated in their relational expression.It can be obtained in this way by above-mentioned formula required F ' it is close with | L is close |.Generally different focal length camera lens ft ' to be measured, different size picture pick-up device can be shown by the method for list | ￠ P |, different size TV resolution test card size | Φ A | with the first faces camera lens T to be detected to the different distance in virtual image face | Lt |, find out suitable f ' it is close with | L is close | initial value.Example table by taking common 4/3 specification 1# TV resolution test cards as an example, Its size is 280mm*220mm, and catercorner length is 356mm.CMOS sizes：1/3″(Φ6mm),1/2.7″(Φ6.6mm),1/ 2.5″(Φ7.2mm),1/2″(Φ8mm),1/1.8″(Φ8.9mm),2/3″(Φ11mm).The partial results of calculating such as 1 institute of table Show：

1 unit of table：mm

It can be obtained from the analysis of upper table result of calculation:

1, with the increase of picture pick-up device, the close-up focal length f ' that need to select it is close with | L is close | to reduce；But with mirror to be measured The increase of head focal length, the close-up focal length f ' that need to be selected it is close with | L is close | also with increase, can very become negative.And target surface big to visual field Big camera lens to be measured, correspondingly selects big test card advantageous；And to focal length camera lens to be measured, select the test card of small size relatively to have Profit, but it is noted that preventing | L is close | and long (it can influence the miniaturization of equipment).

2, from table, in the case where requiring scenery A and " virtual object face " B to be mutually erect image relation condition, calculated f ' is close long-range In ft ', it is seen that the drift angle on the axis that close-up undertakes and outside axis is all little, therefore its image quality shadow for having been corrected to camera lens to be measured Sound is not too large.Since f close values are larger, spherochromatism (especially second order spectrum) is certainly very big, in correction close-up aberration duration It must pay attention to.

Since the close-up of single optimization is difficult to reflect the imaging effect of the camera lens to be measured of it and postposition altogether, this practicality The method of novel use is the close-up structure and identical focal length, different visual fields, different bores, different camera lens knots initial designs The camera lens to be measured of structure, which links up, optimizes calculating, i.e., in the case where lens parameters to be measured are constant, by changing compound lens Rear cut-off distance and close-up parameter carry out aberration balancing, the new construction of close-up after being optimized；Then in constant new rear cut-off distance Under conditions of, close-up is taken down, object distance is readjusted, calculates lens imaging quality to be measured at this time, as its image quality compared with Good, object distance also complies with design requirement, it is believed that the camera lens inspection to be measured of identical focal length various types can be suitble to by therefrom preferentially having selected The close-up of survey.Mono- Ming Liao of method Jian, facts have proved it is feasible, both solved single optimization close-up be difficult to reaction and postposition Camera lens to be measured imaging effect altogether, also avoid different lens constructions to be measured because its front principal plane difference causes aberration and its The problem of his parameter variation.

Theoretically, a close-up corresponds to same focal length value, same relative aperture, same " virtual object face " B distances Its imaging effect of camera lens to be measured is best, but is unreasonable from processing cost.The formula of focal length is calculated from close-up：

F ' is close=| MR | * (| Lt |-△) * ft '/[(| Lt |-ft ')-| MR | * ft ']

It can export：The nearly * of ft '=f ' | Lt |/[(| Lt |-△+f ' are close) * | MR |+f ' is close] (wherein, | MR |=| Φ A |/| ΦP|).In above formula, the same close-up is such as used, as long as changing | MR | and | Lt | value can also detect the to be measured of different focal length Camera lens, i.e., it is fixed in the target surface size of video camera, can use change test card size and | Lt | value, reach inspection Survey the purpose of different focal length camera lens to be measured.But largely calculated according to us, it is desirable to which a designed close-up is gone to fit When answering the camera lens aberration to be measured of wide range focal length, image quality can have a greater change.Therefore, it goes to detect with a close-up larger The camera lens aberration to be measured of range focal length is inappropriate.But want to be deacclimatized the mirror to be measured of certain focal range with a close-up The detection of head is feasible, can accomplish that a camera lens is multi-purpose in this way.When selecting the suitable focal range of close-up, use The concept of " center focal length ", e.g., center focal length ft '=4mm that short focus is chosen, it can meet the camera lens to be measured of focal length 2.5-8mm Detection；The middle burnt center focal length ft '=12mm chosen, it can meet the Shot Detection to be measured of focal length 8-20mm；What focal length was chosen Center focal length ft '=35mm, it can meet the Shot Detection to be measured of focal length 20-75mm.It, be with the center of selection when aberration balancing It is corrected subject to focal length.In this way we only with the combination of three groups of cemented double lens meet lens focus to be measured from 2.5mm to The detection of 75mm image quality.

The close-up of the utility model includes close-up 1, close-up 2 11 and close-up 3 12, they are disposed respectively In the video monitoring pick-up lens to be measured front end of short, medium and long focal length, for assisting video monitoring pick-up lens image quality to detect.

As shown in figure 4, the applicable close-up 1 of short focus range be by focal length be f ' it is close=337.8mm, two panels be The lens gluing of convex-concave forms, and the focal length of front and back lens is respectively 103 and -140.1mm.The radius of lens be respectively R11, R12, R13；Thickness is respectively d12 and d13；Optical material is respectively H-K9L and H-F4.Wherein, the R12 of selection is about R11's 20-26 times or so, the entrance pupil of the direction camera lens to be measured of all radiuses, to be conducive to reduce the influence of off-axis aberration.It is such Scheme can also solve the too small problem of edging coefficient while having corrected image quality.The utility model selection ft '= Center focal lengths of the 4mm as short focus camera lens to be measured, its D/f=1:2；Image planes size Φ 6.6mm, Figure 10 are that it is in object distance MTF curve when 2300mm.

Table 2 lists several camera lenses additions to be detected of short focus range and sheds the geometry parameter situation of change of close-up.

Table 2：

F=337.8mm units：mm

As shown in figure 5, the applicable close-up 2 12 of mid-focal length range be by focal length be f ' it is close=1033mm, shape be convex Two recessed lens gluings form, and the focal length of front and back lens is respectively 297.5 and -408.7mm.The radius of lens be respectively R21, R22、R23；Thickness is respectively d21 and d22；Optical material is respectively H-K9L and H-F4.Wherein, the R22 of selection is about 4-6 times or so of R21.Such scheme solves the problems, such as that edging coefficient is too small while having corrected image quality.This Utility model chooses the center focal length of ft '=12mm burnt camera lenses to be measured as in, its D/f=1:2；Image planes size Φ 6.6mm, Figure 14 is its MTF curve when object distance is 8430mm.Several camera lenses to be detected that table 3 lists middle burnt range are added and shed closely Take the photograph the situation of change of mirror:

Table 3：

F ' is close=1033mm units：mm

As shown in fig. 6, the applicable close-up 3 13 of long-focus range be by focal length be f ' it is close=2085mm, shape be concave-convex Two lens gluings form.The focal length of front and back lens is respectively 111.9 and -119.03mm.The radius of lens be respectively R31, R32、R33；Thickness is respectively d31 and d32；Optical material is respectively H-ZK3 and H-ZK 10.Wherein, the R31 of selection is about It is 8-12 times or so of R32.Since focal length is long, the radius on front and back two sides is all very big, if the design using short, middle coke is done The radius of method, cemented surface can be very big, the very little for making edging coefficient become.The applicable close-up of the long-focus range of the utility model is adopted Scheme with front-back not towards Lens Entrance Pupil to be measured can make the radius of cemented surface become very little in this way, in the good imaging of correction While quality, solve the problems, such as that edging coefficient is too small.The utility model chooses ft '=35mm as focal length camera lens to be measured Center focal length, its D/f=1:2；Image planes size Φ 6.6mm, Figure 18 are its MTF curves when object distance is 1980mm.Table 4 arranges The several camera lenses to be detected for going out short focus range are added and shed the situation of change of close-up:

Table 4：

F ' is close=2084.8mm units：mm

Above-mentioned specific implementation mode is only explained in detail the technical solution of the utility model, and the utility model is not It is only limited only to above-described embodiment, every any improvement or replacement according to the utility model principle should all be new in this practicality Within the protection domain of type.

Claims (8)

1. a kind of double light path high quality detection device, it is characterised in that：The detection device includes light source one (1), resolution test Block one (2), close-up R, the mounting base (3) for placing video monitoring pick-up lens T, video camera (4), light source two (5), differentiate Rate test card two (6) and reflective mirror (7), the light source one (1), resolution chart one (2), close-up R, mounting base (3), Video camera (4) is set in turn in along light incident direction on vertical optical axis (8), the light source two (5), resolution chart two (6) it is set in turn in along light incident direction on the horizontal optical axis (9) perpendicular with vertical optical axis (8), the horizontal optical axis (9) Between close-up R and resolution chart one (2), the close-up R include close-up one (10), close-up two (11) and Close-up three (12), the video monitoring pick-up lens T include that short focus video monitoring pick-up lens (13), middle burnt video monitoring are taken the photograph As camera lens (14) and focal length video monitoring pick-up lens (15), the close-up one (10), close-up two (11) and close-up three (12) short focus video monitoring pick-up lens (13), middle burnt video monitoring pick-up lens (14) and focal length video monitoring is respectively used to take the photograph Picture camera lens (15) image quality detects and can switch to the working position positioned at vertical optical axis (8) according to the camera lens correspondence detected It sets, the reflective mirror (7) can move back and forth along horizontal optical axis (9) direction between operating position and off-position, described Reflective mirror (7) detects time shift in middle burnt video monitoring pick-up lens (14) and focal length video monitoring pick-up lens (15) image quality It moves to operating position, reflective mirror (7) is in 45 ° and reflective mirror with horizontal optical axis (9) and vertical optical axis (8) at operating position (7) center and the center of video monitoring pick-up lens T optical axises coincide, and the reflective mirror (7) images in short focus video monitoring Camera lens (13) image quality is moved to off-position when detecting, and the reflective mirror (7) regards in off-position positioned at short focus Outside the peripheral field of frequency monitoring camera camera lens (13).

2. double light path high quality detection device according to claim 1, it is characterised in that：Each optics of the detection device Element need to meet the following conditions：

7 ＜ Δs, 1 ＜ 10；

15 ＜ Δs, 2 ＜ 30；

15 ＜ Δs, 3 ＜ 30；

Wherein, Δ 1 is short focus video monitoring pick-up lens (13) first face to the interval of close-up one (10)；Δ 2 is that middle coke regards Frequency monitoring camera camera lens (14) first face to the interval of close-up two (11)；Δ 3 is focal length video monitoring pick-up lens (15) the The interval of close-up three (12) is arrived on one side.

3. double light path high quality detection device according to claim 1, it is characterised in that：The detection device further include with The high definition LCD display (16) for showing the CMOS epigraphs for being imaged on video camera (4) that video camera (4) is connected.

4. double light path high quality detection device according to claim 1, it is characterised in that：The close-up one (10) includes First lens (101) and the second lens (102) that contiguity gluing unit is formed with the first lens (101), the close-up two (11) include the third lens (111) and form the 4th lens (112) of contiguity gluing unit with the third lens (111), it is described close The 6th lens (122) that mirror three (12) includes the 5th lens (121) and forms contiguity gluing unit with the 5th lens (121) are taken the photograph, The optical element for forming each close-up must satisfy the following conditions：

0.01 ＜ Pcd12-Pcd11 ＜ 0.02；20 ＜ R12/R11 ＜, 26 ‥ ‥ ‥ are 1.

0.28≦|Φ1/R11-Φ1/R12|‥‥‥②

1.50 ＜ n11 ＜ 1.54；60 ＜ ν, 11 ＜, 65 ‥ ‥ ‥ are 3.

1.60 ＜ n12 ＜ 1.626；35 ＜ ν, 12 ＜, 38 ‥ ‥ ‥ are 4.

0.008 ＜ Pcd22-Pcd21 ＜ 0.012；4 ＜ | R22/R21 | 6 ‥ ‥ ‥ of ＜ are 5.

0.4≦|Φ2/R21-Φ2/R22|‥‥‥⑥

1.50 ＜ n21 ＜ 1.54；60 ＜ ν, 21 ＜, 65 ‥ ‥ ‥ are 7.

1.60 ＜ n22 ＜ 1.63；56 ＜ ν, 22 ＜, 61 ‥ ‥ ‥ are 8.

0.001 ＜ Pcd32-Pcd31 ＜ 0.006；8 ＜ | R32/R31 | 12 ‥ ‥ ‥ of ＜ are 9.

0.4≦|Φ3/R31-Φ3/R32| ‥‥‥⑩

Wherein, Pcd11, Pcd12, Pcd21, Pcd22, Pcd31, Pcd32 are respectively the first lens (101)~the 6th lens (122) relative dispersion coefficient；R11, R12, R13, R21, R22, R23, R31, R32, R33 be respectively the first lens (101)~ The radius in the 6th lens (122) each face；1~Φ of Φ 3 are respectively the bore of close-up one (10)~close-up three (12)；n11、 N12, n21, n22, n31, n32 are respectively the refractive index of the first lens (101)~the 6th lens (122)；ν11、ν12、ν21、ν 22, ν 31, ν 32 are respectively the Abbe number of the first lens (101)~the 6th lens (122).

5. double light path high quality detection device according to claim 4, it is characterised in that：First lens (101) are Convex-concave positive lens, second lens (102) are convex-concave negative lens；The third lens (111) are convex-concave positive lens, described the Four lens (112) are convex-concave negative lens；5th lens (121) are concave-convex positive lens, and the 6th lens (122) are bumps Negative lens.

6. double light path high quality detection device according to claim 1, it is characterised in that：The short focus video monitoring camera shooting The focal range of camera lens (13) is 2.5~8mm, and the focal range of the middle burnt video monitoring pick-up lens (14) is 8~20mm, The focal range of the focal length video monitoring pick-up lens (15) is 20~75mm.

7. double light path high quality detection device according to claim 4, it is characterised in that：First lens (101) and The third lens (111) are made of H-K9L, and second lens (102) and the 4th lens (112) are made of H-F4, described 5th lens (121) are made of H-ZK3, and the 6th lens (122) are made of H-ZK10.

8. double light path high quality detection device according to claim 1, it is characterised in that：The mounting base (3) includes machine Frame (31), be slidably connected in rack (31) and can with respect to the lifting seat (32) that rack (31) slide up and down, be set to rack (31) being used to limit lifting seat (32) locking device (33) that rack (31) slides up and down relatively, sliding between lifting seat (32) It is dynamic be connected on lifting seat (32) and can OQ t seat (32) move left and right sliding seat (34), be set on sliding seat (34) For pulling pull rod (35) that sliding seat (34) OQ t seat (32) moves left and right and two, arrangement is set in left-right direction The camera lens switching circle (36) for placing video monitoring pick-up lens T being placed on sliding seat (34), the video camera (4) are fixed In on lifting seat (32) lower surface, it is equipped between the video camera (4) and lifting seat (32) for adjusting video camera (4) and video The micromatic setting of distance between monitoring camera camera lens T.