CN202119967U - High-resolution lens for automatic detecting device - Google Patents
High-resolution lens for automatic detecting device Download PDFInfo
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- CN202119967U CN202119967U CN201120217979XU CN201120217979U CN202119967U CN 202119967 U CN202119967 U CN 202119967U CN 201120217979X U CN201120217979X U CN 201120217979XU CN 201120217979 U CN201120217979 U CN 201120217979U CN 202119967 U CN202119967 U CN 202119967U
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- ring
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- lens
- body tube
- light hurdle
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Abstract
The utility model relates to a high-resolution lens for an automatic detecting device, which comprises a main lens barrel. The high-resolution lens for the automatic detecting device is characterized in that a front lens group A with positive focal power, a variable diaphragm C and a back lens group B with positive focal power are respectively arranged in the main lens barrel lens group along the incident direction of light rays from left to right. The inner wall on the front portion of the main lens barrel is in thread connection with a front lens seat for placing the front lens group A, and the inner wall on the back portion of the main lens barrel is provided with the back lens group B. The front portion of the periphery of the main lens barrel is provided with a focus adjusting mechanism, and the back portion of the periphery of the main lens barrel is provided with an aperture adjusting mechanism. The high-resolution lens for the automatic detecting device has the advantages of being high in resolution and small in distortion and has functions of adjusting focus and aperture. The lens is firm and symmetrical in structure, reliable in movement of moving parts, good in touch and attractive and elegant in appearance.
Description
Technical field
The utility model relates to a kind of high-resolution camera lens that is used on the automatic checkout equipment, belongs to industrial automatic checkout equipment technical field, relates to high definition, low distortion video camera lens device.
Background technology
See Fig. 3 structural shape middle long-focus (f '=35mm) pick-up lens, used closely 20 years in the Photoelectric Detection field, its performance index are low, relative aperture is little (D/f '=1/2.2), distortion is up to 3%; Especially its resolution is lower.Only can be adaptive with the common CCD or the cmos camera of 20-30 ten thousand pixels.And compatible relatively poor with video camera can only satisfy the needs of generally watching in monitoring field.
Summary of the invention
The purpose of the utility model is to provide a kind of high-resolution camera lens that is used on the automatic checkout equipment; Help improving the resolution and the distortion of lowering camera lens of camera lens; Thereby effectively satisfy application, improve the precision of automatic checkout equipment the identification of product, measurement, detection in the commercial production field.
The utility model is characterised in that: a kind of high-resolution camera lens that is used on the automatic checkout equipment; Comprise body tube, it is characterized in that: in the said body tube along light from left to right incident direction to be provided with focal power respectively be that positive preceding mirror group A, iris C and focal power is positive back mirror group B; The front inner wall of said body tube is threaded in order to the preceding microscope base of mirror group A before settling, and the rear inside wall of said body tube is provided with back mirror group B, and the front portion of said body tube periphery is provided with the focusing governor motion, and the rear portion is provided with the aperture governor motion; Said focusing governor motion comprises the focusing coupling ring that is connected with the positive thread in body tube outer ring; Said focusing coupling ring outer ring also is provided with the focusing coupling tunnel that negative thread connects; Said focusing coupling ring also is connected with the focusing regulating ring of being located at its outer ring through jackscrew; Offer line channel on the rear inside wall of said focusing coupling tunnel, lay the end in the said line channel and be connected the guide pin on the body tube rear portion; Said aperture governor motion comprises to be located on the body tube inner ring and through light hurdle seat that jackscrew is connected with body tube and the light hurdle regulating ring of being located at focusing coupling tunnel outer ring; Also be provided with light hurdle rotating ring between said smooth hurdle seat and the body tube; Said smooth hurdle rotating ring one end and light hurdle seat apical grafting; The other end is connected with light hurdle rotating ring snap ring on being connected to light hurdle seat inner ring, and said smooth hurdle regulating ring is followed closely with the light hurdle rotating ring retaining of body tube and is connected with light hurdle rotating ring with light hurdle seat through running through the focusing coupling tunnel.
The advantage of the utility model:
1, the camera lens body tube adopts whole processing, and one machines.Effectively guarantee the optical texture concentricity requirement.
2, design independently light hurdle governor motion, take into account and optimize processing, assembly technology.Promote processing, efficiency of assembling.
3, the manual adjustments aperture is set.Adopt 10 light hurdle blades, 8 breach light hurdle blades and 2 round light hurdle blades wherein are set, guarantee aperture vary stable in the light modulation process, evenly, the minimum aperture contract fully;
4, it is preposition focus adjusting mechanism to be set, and the aperture governor motion is rearmounted.Design focusing regulating ring is roughly consistent with light hurdle regulating ring overall ratio;
5, focusing regulating ring and preset aperture ring outer ring are provided with rubber ring, strengthen the shank aesthetic property and improve the comfortable feel degree.Add full length shot front end shank length, play the effect of similar light shield, guarantee the coordination of camera lens overall ratio, good looking appearance is generous.Focusing regulating ring, preset aperture ring, body tube exposed parts are reserved enough parts of carving characters, and are convenient to be provided with camera lens LOGO;
6, mechanical spacer ring dimensional tolerence control is less than 0.02mm, and concentricity is controlled less than 0.02mm, and screw thread is paid tolerance on fit GB (H7/g6), lens barrel tolerance on fit GB (H8/f7).Focusing, accurate, smooth and easy, the no clamping stagnation of light modulation action;
7, shank adopts the simple metal structural design, guarantees structural strength.The chromium plating of camera lens connection seat is handled, and promotes product specification.Connection seat and shank adopt thread connection, and jackscrew is strengthened fixing.Reliable and stable.
Description of drawings
Fig. 1 is the utility model example structure synoptic diagram.
Fig. 2 is the utility model embodiment light channel structure synoptic diagram.
The light channel structure synoptic diagram of the current the type camera lens of Fig. 3.
Embodiment
With reference to figure 1 and Fig. 2, a kind of high-resolution camera lens that is used on the automatic checkout equipment comprises body tube 1, in the said body tube along light from left to right incident direction to be provided with focal power respectively be that positive preceding mirror group A, iris C and focal power is positive back mirror group B; The front inner wall of said body tube 1 is threaded in order to the preceding microscope base 2 of mirror group A before settling, and the rear inside wall of said body tube 1 is provided with back mirror group B, and the front portion of said body tube 1 periphery is provided with the focusing governor motion, and the rear portion is provided with the aperture governor motion; Said focusing governor motion comprises the focusing coupling ring 3 that is connected with the positive thread in body tube 1 outer ring; Said focusing coupling ring 3 outer rings also are provided with the focusing coupling tunnel 4 that negative thread connects; Said focusing coupling ring 3 also is connected with the focusing regulating ring 6 of being located at its outer ring through jackscrew 5; Offer line channel on the rear inside wall of said focusing coupling tunnel 4, lay the end in the said line channel and be connected the guide pin 7 on body tube 1 rear portion; Said aperture governor motion comprises to be located on body tube 1 inner ring and through light hurdle seat 9 that jackscrew 8 is connected with body tube 1 and the light hurdle regulating ring 10 of being located at focusing coupling tunnel 4 outer rings; Also be provided with light hurdle rotating ring 11 between said smooth hurdle seat 9 and the body tube 1; Said smooth hurdle rotating ring 11 1 ends and light hurdle seat 9 apical graftings; The other end is connected with light hurdle rotating ring snap ring 12 on being connected to light hurdle seat 9 inner rings, and said smooth hurdle regulating ring 10 is followed closely 13 and is connected with light hurdle rotating ring 11 with light hurdle seat 9 through running through focusing coupling tunnel 4 and the light hurdle rotating ring retaining of body tube 1.。
Mirror group A is by positive selenodont lens A-1 before above-mentioned, and the gummed group that positive selenodont lens A-2 and negative selenodont lens A-3 connect airtight constitutes; The gummed group that said back mirror group B is made up of negative selenodont lens B-1 and positive selenodont lens B-2, plano-concave lens B-3 constitutes.
The leading section of microscope base 2 is threaded in order to the trim ring A14 of mirror group A before fixing before above-mentioned; The back segment portion of said body tube 1 is threaded in order to the trim ring B15 of fixing back mirror group B; Be provided with spacer ring 16 between the gummed group that said positive selenodont lens A-1 and positive selenodont lens A-2 and negative selenodont lens A-3 connect airtight, be provided with spacer ring 17 between gummed group that said biconcave lens B-1 and biconvex lens B-2 connect airtight and the biconvex lens B-3.
Above-mentioned focusing coupling tunnel 4 rear ends are connected with the connection seat 19 that is connected with focusing coupling tunnel 4 through jackscrew 18.
Above-mentioned focusing regulating ring 6 also is provided with rubber ring 20 with regulating ring 10 outer rings, light hurdle.
Be respectively equipped with on above-mentioned focusing regulating ring 6 and the light hurdle regulating ring 10 in order to the focusing lock of locking focusing regulating ring 6 and light hurdle regulating ring 20 mark closely 21 with light hurdle locking nail 22, but said focusing lock mark closely 21 with an end apical grafting of light hurdle locking nail 22 on focusing coupling tunnel 4.
Airspace before above-mentioned between mirror group A and the iris C is 3.11mm, and the airspace between said iris C and the back mirror group B is 6.37mm; Among the mirror group A, the airspace between positive selenodont lens A-1 and the cemented doublet group is 0.11mm before said; Among the said back mirror group B, the airspace between cemented doublet group and the plano-concave lens B-3 is 4.95mm.
The optical index that the utility model reaches: focal length: f '=35mm; Relative aperture D/f '=1/1.75; Field angle 2w>=18.3 ° (as square linear field 2 η>=φ 11mm); Optical texture length: Σ L≤48.5mm; Be suitable for spectral range: 480nm-656nm; Resolution of lens: adaptive with 5,000,000 pixel high-resolution ccd video cameras or cmos video camera; During spatial frequency 200lp/mm, the MTF of all visual fields all is superior to 0.3; Optical distortion≤0.9%; Can select manual iris or auto iris for use; Manual focusing is set, and focus adjusting mechanism adopts the positive and negative thread of different lead to grind to cooperate and focuses, and focusing is moved accurately, reliable, no clamping stagnation, focusing range of adjustment 1.5mm.
The practical implementation step:
The light path of the utility model adopts the optical texture of double gauss.It is positive preceding mirror group A by focal power and back mirror group B constitutes, and A-B two mirror constituent elements are symmetry basically.Can reduce off-axis aberration to greatest extent like this, improve the resolution of camera lens.Make the optical distortion of camera lens reduce to minimum simultaneously.
The inventor changes the negative selenodont lens in the mirror group of front and back into two gummed groups of connecting airtight; Utilize the refringence and the chromatic dispersion difference of two lens materials of gummed group; Axle such as spherical aberration corrector, chromatism of position is gone up the some aberration, has improved the relative aperture of camera lens, in the mirror group B of back, draws back certain distance to positive lens B-3 with two gummed groups; And carry out the unit to positive lens B-3 and write music for a song, with the astigmatism of correcting optical system.Thereby make optical system reach the performance index of high resolving power, low distortion.
This lens focus is 35mm; Image height φ 11mm, 5,000,000 pixel high definition camera lenses, the image planes size of camera lens is big; Require the picture element at optical center and edge simultaneously clear; Suppress the curvature of field in the aberration, coma is to the concentricity of physical construction, the strict control of degree of eccentricity and the interval between each optical component of optical component.As the expensive goods of high definition class, require the focusing governor motion preposition, the aperture governor motion is rearmounted.Focusing, light modulation are moved stable, reliable.The camera lens good looking appearance is generous.Also need optimize processing technology simultaneously, be convenient to the dress school of camera lens.
The utility model Design of Mechanical Structure comprises: see Fig. 1, camera lens body tube 1 adopts whole processing, and one is accomplished.Effectively avoided bringing in the processing tool changing Concentricity tolerance of mechanical part.Dimming components (light hurdle seat 9, light hurdle rotating ring 11, light hurdle rotating ring snap ring 12) is set separately.Microscope base the inside before eyeglass A-1 sheet, A-2 sheet, the A-3 sheet of 33 groups of formulas of preceding mirror group A placed; B-1, B-2, B-3 are placed in the body tube.Preceding microscope base and body tube adopt thread connection to fix.
For fixing len and guarantee the airspace between each eyeglass, trim ring and spacer ring have been designed respectively: the airspace between spacer ring 16 principal security A-1 sheets and A-2, the A-3; Spacer ring 17 has guaranteed the airspace between B-1 and B-2, the B-3 gummed group; Camera lens trim ring and spacer ring are provided with delustring and buckle, and apply lusterless paint at the delustring button, effectively lower the stray light that primary event brings, and lower ghost image and produce, and promote camera lens adaptability under big illuminance situation.
Because C position, light hurdle and A-3 sheet be very near (see figure 2) in the structure of this optical system, in order to guarantee the theoretical position of light hurdle C, and satisfy aperture regulate rearmounted, the designing requirement that the focusing adjusting is preposition and structure and shape is elegant in appearance, design following scheme:
1, design strengthens the shank radial width, is convenient at shank set inside focusing component (focusing coupling ring 3, focusing coupling tunnel 4), dimming components dimming components (light hurdle seat 9, light hurdle rotating ring 11, light hurdle rotating ring snap ring 12);
2, design connection seat 19, focusing coupling ring 3, focusing coupling tunnel 4, focusing regulating ring 6 are formed focus adjusting mechanism, satisfy the preposition requirement of focus adjusting mechanism;
3, design light hurdle seat 9, light hurdle rotating ring 11, light hurdle rotating ring snap ring 12 are formed independent aperture governor motion, when conveniently debuging, satisfy the rearmounted requirement of aperture governor motion;
4, design adds full length shot front end shank length, and gradient (see figure 1) of camera lens incident end design had both made front end play the effect of the harmful light of intercepting edge, lifting camera lens applicability, guaranteed the coordination of camera lens overall ratio again, and shape is elegant in appearance;
5, design focusing regulating ring, light hurdle regulating ring, body tube exposed parts ratio uniformity are reserved enough positions of carving characters, and are convenient to be provided with camera lens LOGO; Camera lens focusing regulating ring and preset aperture ring outer ring are provided with the rubber band (see figure 1).
To guarantee in the said structural design each constituent element of system actions such as concentricity and focusing accurately, steadily and demand such as good hand touch, adopt following two measures: 1, design focusing coupling ring 3 connects with the positive thread of body tube 1 employing, designs positive thread helical pitch 1.5mm.Focusing coupling ring 3 uses anti-thread to connect with focusing coupling tunnel 4, designs anti-thread helical pitch 1mm.Positive and negative thread through an odd lot multiple helical pitch grinds; Effectively eliminate the screw thread backlash campaign that screw thread is shipped and produced in the moving process, guarantee the precision that cooperates between the screw thread to improve the reliability that focusing is moved; Effectively guarantee the Concentricity tolerance of camera lens in the burnt process of fine setting, guarantee the camera lens picture element.2, make the focusing campaign of focus adjusting mechanism be transformed into axially-movable through guide pin, stop camera lens, guarantee the picture element requirement in the focusing process because of the concentricity variation that circular motion produced exerts an influence to the camera lens picture element by circular motion.
Said for satisfying the requirement of optical system focussing distance 1.5mm; The body tube 1 and the front and back of focusing coupling tunnel 4 rotating ring retaining nail on the light hurdle are reserved in the position of 1.5mm in design; Promptly on body tube 1 and focusing coupling tunnel 4, mill out the sipes of 6mm; When guaranteeing that promptly action is focused in assurance again easy to process, each mechanical part is not interfered.
Said shank adopts the simple metal structural design, guarantees structural strength.The chromium plating of camera lens connection seat is handled, and promotes product specification.Connection seat and shank adopt thread connection, and jackscrew is strengthened fixing.Reliable and stable.
The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model.
Claims (7)
1. a high-resolution camera lens that is used on the automatic checkout equipment comprises body tube, it is characterized in that: in the said body tube along light from left to right incident direction to be provided with focal power respectively be that positive preceding mirror group A, iris C and focal power is positive back mirror group B; The front inner wall of said body tube is threaded in order to the preceding microscope base of mirror group A before settling, and the rear inside wall of said body tube is provided with back mirror group B, and the front portion of said body tube periphery is provided with the focusing governor motion, and the rear portion is provided with the aperture governor motion; Said focusing governor motion comprises the focusing coupling ring that is connected with the positive thread in body tube outer ring; Said focusing coupling ring outer ring also is provided with the focusing coupling tunnel that negative thread connects; Said focusing coupling ring also is connected with the focusing regulating ring of being located at its outer ring through jackscrew; Offer line channel on the rear inside wall of said focusing coupling tunnel, lay the end in the said line channel and be connected the guide pin on the body tube rear portion; Said aperture governor motion comprises to be located on the body tube inner ring and through light hurdle seat that jackscrew is connected with body tube and the light hurdle regulating ring of being located at focusing coupling tunnel outer ring; Also be provided with light hurdle rotating ring between said smooth hurdle seat and the body tube; Said smooth hurdle rotating ring one end and light hurdle seat apical grafting; The other end is connected with light hurdle rotating ring snap ring on being connected to light hurdle seat inner ring, and said smooth hurdle regulating ring is followed closely with the light hurdle rotating ring retaining of body tube and is connected with light hurdle rotating ring with light hurdle seat through running through the focusing coupling tunnel.
2. the high-resolution camera lens that is used on the automatic checkout equipment according to claim 1 is characterized in that: mirror group A is by positive selenodont lens A-1 before said, and the gummed group that positive selenodont lens A-2 and negative selenodont lens A-3 connect airtight constitutes; The gummed group that said back mirror group B is made up of negative selenodont lens B-1 and positive selenodont lens B-2, plano-concave lens B-3 constitutes.
3. the high-resolution camera lens that is used on the automatic checkout equipment according to claim 1 and 2; It is characterized in that: the leading section of microscope base is threaded in order to the trim ring A of mirror group A before fixing before said; The back segment portion of said body tube is threaded in order to the trim ring B of fixing back mirror group B; Be provided with spacer ring between the gummed group that said positive selenodont lens A-1 and positive selenodont lens A-2 and negative selenodont lens A-3 connect airtight, be provided with spacer ring between gummed group that said biconcave lens B-1 and biconvex lens B-2 connect airtight and the biconvex lens B-3.
4. the high-resolution camera lens that is used on the automatic checkout equipment according to claim 1 is characterized in that: said focusing coupling tunnel rear end is connected with the connection seat that is connected with the focusing coupling tunnel through jackscrew.
5. the high-resolution camera lens that is used on the automatic checkout equipment according to claim 1 is characterized in that: said focusing regulating ring and regulating ring outer ring, light hurdle also are provided with rubber ring.
6. the high-resolution camera lens that is used on the automatic checkout equipment according to claim 1; It is characterized in that: be respectively equipped with on said focusing regulating ring and the light hurdle regulating ring in order to the focusing lock of locking focusing regulating ring and light hurdle regulating ring and mark closely and light hurdle locking nail, but said focusing lock is marked closely an end apical grafting with light hurdle locking nail on the coupling tunnel of focusing.
7. the high-resolution camera lens that is used on the automatic checkout equipment according to claim 1 and 2 is characterized in that: the airspace before said between mirror group A and the iris C is 3.11mm, and the airspace between said iris C and the back mirror group B is 6.37mm; Among the mirror group A, the airspace between positive selenodont lens A-1 and the cemented doublet group is 0.11mm before said; Among the said back mirror group B, the airspace between cemented doublet group and the plano-concave lens B-3 is 4.95mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120217979XU CN202119967U (en) | 2011-06-25 | 2011-06-25 | High-resolution lens for automatic detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120217979XU CN202119967U (en) | 2011-06-25 | 2011-06-25 | High-resolution lens for automatic detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN202119967U true CN202119967U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120217979XU Expired - Lifetime CN202119967U (en) | 2011-06-25 | 2011-06-25 | High-resolution lens for automatic detecting device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193174A (en) * | 2011-06-25 | 2011-09-21 | 福建福光数码科技有限公司 | High resolution lens used in automatic detecting device |
| CN102801906A (en) * | 2012-08-02 | 2012-11-28 | 东莞市南星电子有限公司 | Monitoring camera with day and night double apertures |
| CN102902045A (en) * | 2012-10-30 | 2013-01-30 | 福建福光数码科技有限公司 | Pick-up lens for high-resolution single group movement industry |
| KR20160033728A (en) * | 2013-07-19 | 2016-03-28 | 뉴욕 유니버시티 | System, method and computer-accessible medium for authenticating physical objects using microscopic textures |
| CN110501797A (en) * | 2019-09-20 | 2019-11-26 | 合肥英睿系统技术有限公司 | A kind of infrared lens device that can detect identification visual field automatically |
-
2011
- 2011-06-25 CN CN201120217979XU patent/CN202119967U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193174A (en) * | 2011-06-25 | 2011-09-21 | 福建福光数码科技有限公司 | High resolution lens used in automatic detecting device |
| CN102193174B (en) * | 2011-06-25 | 2013-04-24 | 福建福光数码科技有限公司 | High resolution lens used in automatic detecting device |
| CN102801906A (en) * | 2012-08-02 | 2012-11-28 | 东莞市南星电子有限公司 | Monitoring camera with day and night double apertures |
| CN102801906B (en) * | 2012-08-02 | 2015-04-15 | 东莞市南星电子有限公司 | Monitoring camera with day and night double apertures |
| CN102902045A (en) * | 2012-10-30 | 2013-01-30 | 福建福光数码科技有限公司 | Pick-up lens for high-resolution single group movement industry |
| CN102902045B (en) * | 2012-10-30 | 2014-07-09 | 福建福光数码科技有限公司 | Pick-up lens for high-resolution single group movement industry |
| KR20160033728A (en) * | 2013-07-19 | 2016-03-28 | 뉴욕 유니버시티 | System, method and computer-accessible medium for authenticating physical objects using microscopic textures |
| CN105934664A (en) * | 2013-07-19 | 2016-09-07 | 纽约大学 | System, method and computer-accessible medium for authenticating physical objects using microscopic textures |
| EP3022550A4 (en) * | 2013-07-19 | 2017-06-07 | New York University | System, method and computer-accessible medium for authenticating physical objects using microscopic textures |
| US9759902B2 (en) | 2013-07-19 | 2017-09-12 | New York University | System, method and computer-accessible medium for authenticating physical objects using microscopic textures |
| CN105934664B (en) * | 2013-07-19 | 2021-02-26 | 纽约大学 | Computer accessible medium, method and system for authenticating physical objects using micro-texture |
| KR102447719B1 (en) | 2013-07-19 | 2022-09-28 | 뉴욕 유니버시티 | System, method and computer-accessible medium for authenticating physical objects using microscopic textures |
| CN110501797A (en) * | 2019-09-20 | 2019-11-26 | 合肥英睿系统技术有限公司 | A kind of infrared lens device that can detect identification visual field automatically |
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