CN106443975B - A kind of low distorted optical industrial lens of high-resolution - Google Patents
A kind of low distorted optical industrial lens of high-resolution Download PDFInfo
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- CN106443975B CN106443975B CN201611170973.5A CN201611170973A CN106443975B CN 106443975 B CN106443975 B CN 106443975B CN 201611170973 A CN201611170973 A CN 201611170973A CN 106443975 B CN106443975 B CN 106443975B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
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Abstract
The present invention relates to a kind of low distorted optical industrial lens of high-resolution, including be set in lens construction along preceding group of eyeglass that light incident direction is set gradually, iris diaphgram and after organize eyeglass, group eyeglass is successively by the first biconvex lens, negative selenodont lens, the first biconcave lens, the second biconvex lens, the first positive selenodont lens group at the rear group eyeglass is successively made of gluing unit, the second positive selenodont lens and the 4th biconvex lens that the second biconcave lens and third biconvex lens touch before described.The low distorted optical industrial lens of the high-resolution are not only simple in structure, and realize the distortion for reducing short distance scene shot.
Description
Technical field
The present invention relates to a kind of low distorted optical industrial lens of high-resolution.
Background technique
High definition industrial lens on existing market, exist distortion it is larger, the unsharp disadvantage of field of view edge has begun not
It is able to satisfy the existing market demand.
Summary of the invention
The purpose of the present invention is to provide a kind of low distorted optical industrial lens of high-resolution, are not only simple in structure, and
Realize the distortion for reducing short distance scene shot.
Technical program of the present invention lies in: a kind of low distorted optical industrial lens of high-resolution, including it is set to camera lens knot
In structure along preceding group of eyeglass that light incident direction is set gradually, iris diaphgram and after organize eyeglass, it is described before group eyeglass successively by the
One biconvex lens, negative selenodont lens, the first biconcave lens, the second biconvex lens, the first positive selenodont lens group are at after described
Gluing unit, the second positive selenodont lens and the 4th biconvex that group eyeglass is successively touched by the second biconcave lens and third biconvex lens
Lens composition.
Further, the airspace between first biconvex lens and negative selenodont lens is 0.10mm, described negative
Airspace between selenodont lens and the first biconcave lens is 3.94mm, first biconcave lens and the second biconvex lens
Between airspace be 1.32mm, the airspace between second biconvex lens and the first positive selenodont lens is
0.1mm。
Further, the airspace before described between group eyeglass and rear group eyeglass is 5.9mm, it is described before group eyeglass with can
Airspace between darkening door screen C is 3.82mm, and the airspace between the iris diaphgram and rear group eyeglass is 2.09mm.
Further, the gluing unit and the second positive selenodont lens of second biconcave lens and third biconvex lens contiguity
Between airspace be 0.10mm, the airspace between the second positive selenodont lens and the 4th biconvex lens is
0.10mm。
Further, the lens construction includes the preceding group lens barrel for installing preceding group of eyeglass, after the preceding group lens barrel
Portion is bolted with the rear group lens barrel being installed in body tube and for organizing eyeglass after installing, and the iris diaphgram is set to rear group lens barrel
It is interior, it is provided with focus adjusting mechanism in the rear group lens barrel, diaphragm regulating mechanism is provided on the body tube, the rear portion of body tube is also
Attachment base is installed.
Further, first biconvex lens, negative selenodont lens, the first biconcave lens, the second biconvex lens and
One positive selenodont lens are set in turn in preceding group lens barrel from after going to, second biconvex lens and the first positive selenodont lens
Between be provided with the first spacer ring, be provided with the second spacer ring between first biconcave lens and the second biconvex lens, described first
It is provided with third spacer ring between biconvex lens and negative selenodont lens, is also bolted in the preceding group lens barrel and is pressed on the first biconvex
Preceding pressing ring on front side of lens.
Further, the gluing unit, the second positive selenodont lens and the 4th biconvex lens are set in turn in from front to back
In rear group lens barrel, the 4th spacer ring is provided between the gluing unit and the second positive selenodont lens, the second positive selenodont is saturating
It is provided with the 5th spacer ring between mirror and the 4th biconvex lens, is also bolted in the rear group lens barrel after being pressed on the 4th biconvex lens
The rear pressing ring of side.
Further, the focus adjusting mechanism includes the focusing runner being set between body tube and rear group lens barrel, the tune
The inner ring rear portion of burnt runner and the front outer ring bolt of rear group lens barrel and focus the outer ring rear portion of runner and the front of body tube
Inner ring bolt, focus runner on be further fixed on focusing ring, be radially bolted on the body tube for focus runner locking
Locking nail.
Further, the diaphragm regulating mechanism includes the aperture setting ring being placed in the middle part of body tube, the diaphragm tune
It is radially bolted with the diaphragm guide pin protruded into rear group lens barrel across body tube on section ring, the diaphragm guide pin is connected with diaphragm,
The second locking nail matched with body tube for aperture setting ring locking is additionally provided on the aperture setting ring.
Compared with prior art, the invention has the following advantages that
1) the low distorted optical industrial lens of the high-resolution are not only simple in structure, and the focusing side mobile using whole group
Formula, close-shot realize blur-free imaging away from up to 0.1m in closer object distance, realize that the distortion for reducing short distance scene shot is less than
0.5%(such as Fig. 4) purpose below, meet the small requirement of industrial lens distortion, and high resolution is in the height of five mega pixels
Clear camera lens, can be with 4:3 or 16:9 standard 2/3 " video camera high-definition matches, and the mtf value of camera lens is in 150lp/
Mm(such as Fig. 3) it is greater than 0.3；
2) in structure design (such as Fig. 2), lens focusing structure uses multiple thread cooperation and position-limit mechanism, and in camera lens
Preceding to use micro- " focusing " structure in end, the limit for avoiding camera lens uses.Rear end diaphragm regulating mechanism ensures diaphragm size simultaneously
Changeability.Different spacer ring and pressing ring are devised to guarantee the airspace and fixing len between eyeglass, so that perfect realize
The various aspects of performance such as camera lens image quality, distortion.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of light path system of the invention；
Fig. 2 is the structural schematic diagram of camera lens of the invention；
Fig. 3 is MTF curve figure of the invention；
Fig. 4 is distortion change curve of the invention；
Fig. 5 is lens parameters figure of the invention；
In figure: 1- preceding group lens barrel 2- focusing ring 3- focusing ring locks jackscrew 4- and focuses runner 5- body tube 6- diaphragm
Guide pin 7- aperture setting ring 8- attachment base locks pressing ring 12- the after jackscrew 9- attachment base 10- limit film lock screw 11-
Four the second positive the 4th spacer rings of selenodont lens 14- third biconvex lens the second biconcave lens of 15- 16- of biconvex lens 13-
The 5th spacer ring 18- limit film 19- rear group lens barrel 20- iris diaphgram 21- diaphragm locking nail 22- snap ring 23- second of 17- lock
Mark closely 24- the first positive selenodont lens 25- the first spacer ring 26- the second biconvex lens 27- locking nail the second spacer ring of 28-
Group before pressing ring A- before negative the first biconvex lens of the selenodont lens 31- third spacer ring 32- 33- of the first biconcave lens of 29- 30-
Eyeglass is organized after eyeglass B-.
Specific embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate attached drawing, make detailed
It is carefully described as follows, but the present invention is not limited thereto.
Referring to figs. 1 to Fig. 5
A kind of low distorted optical industrial lens of high-resolution, including be set in lens construction along light incident direction successively
Preceding group of eyeglass A, iris diaphgram 20 and the rear group eyeglass B being arranged, organize eyeglass successively by the first biconvex lens 32, negative crescent moon before described
Type lens 30, the first biconcave lens 29, the second biconvex lens 26, the first positive selenodont lens 24 form, it is described after group eyeglass according to
The secondary gluing unit touched by the second biconcave lens 15 and third biconvex lens 14, the second positive selenodont lens 13 and the 4th lenticular
Mirror 12 forms.
In the present embodiment, the airspace between first biconvex lens and negative selenodont lens is 0.10mm, described
Airspace between negative selenodont lens and the first biconcave lens is 3.94mm, first biconcave lens and the second lenticular
Airspace between mirror is 1.32mm, and the airspace between second biconvex lens and the first positive selenodont lens is
0.1mm。
In the present embodiment, it is described before airspace between group eyeglass and rear group eyeglass be 5.9mm, it is described before group eyeglass with
Airspace between iris diaphgram C is 3.82mm, and the airspace between the iris diaphgram and rear group eyeglass is 2.09mm.
In the present embodiment, the gluing unit and the second positive selenodont of second biconcave lens and third biconvex lens contiguity are saturating
Airspace between mirror is 0.10mm, and the airspace between the second positive selenodont lens and the 4th biconvex lens is
0.10mm。
In the present embodiment, the lens construction includes the preceding group lens barrel 1 for installing preceding group of eyeglass, the preceding group lens barrel
Rear portion is bolted with the rear group lens barrel 19 being installed in body tube 5 and for organizing eyeglass after installing, and the iris diaphgram 20 is set to
In rear group lens barrel, it is provided with focus adjusting mechanism in the rear group lens barrel, diaphragm regulating mechanism, body tube are provided on the body tube
Rear portion be also equipped with attachment base 9, the attachment base is fixedly connected through attachment base locking jackscrew 8 with body tube.
In the present embodiment, first biconvex lens, negative selenodont lens, the first biconcave lens, the second biconvex lens and
First positive selenodont lens are set in turn in preceding group lens barrel from after going to, and second biconvex lens and the first positive selenodont are saturating
It is provided with the first spacer ring 25 between mirror, the second spacer ring 28, institute are provided between first biconcave lens and the second biconvex lens
It states and is provided with third spacer ring 31 between the first biconvex lens and negative selenodont lens, be also bolted with and be pressed in the preceding group lens barrel
Preceding pressing ring 33 on front side of first biconvex lens.
The installation station of each eyeglass in preceding group lens barrel can effectively ensure that concentricity by same machine tooling, thus with preceding group
The concentricity of group optical path before eyeglass cooperation guarantees.Third spacer ring 28 guarantees the first biconvex lens and negative selenodont lens simultaneously
Between light passing and air distance, the second spacer ring guarantees the light passing and air between the first biconcave lens and the second biconvex lens
Distance, the first spacer ring guarantee light passing and air distance between the second biconvex lens and the first positive selenodont lens.Simultaneously
The preceding pressing ring of design, the Assembly stability of group eyeglass before guaranteeing.
In the present embodiment, the gluing unit, the second positive selenodont lens and the 4th biconvex lens are set gradually from front to back
In in rear group lens barrel, being provided with the 4th spacer ring 16, the second positive crescent moon between the gluing unit and the second positive selenodont lens
It is provided with the 5th spacer ring 17 between type lens and the 4th biconvex lens, is also bolted in the rear group lens barrel and is pressed on the 4th biconvex
Rear pressing ring 11 on rear side of lens.In order to guarantee the airspace and clearance between each eyeglass, the 4th spacer ring, the 5th are devised therebetween
Spacer ring, pressing ring organizes eyeglass Assembly stability after guaranteeing after design, prevents the eyeglass from loosening or dropping out.
In the present embodiment, the focus adjusting mechanism includes the focusing runner 4 being set between body tube and rear group lens barrel, described
Before the inner ring rear portion of focusing runner and the outer ring rear portion and body tube of the front outer ring bolt of rear group lens barrel and runner of focusing
Portion's inner ring bolt is further fixed on focusing ring 2 on runner of focusing, and the focusing environment line focus ring locks jackscrew 3 and is fixed on tune
The locking nail 27 for runner locking of focusing radially is bolted on burnt runner, on the body tube.
In order to realize that it is adjustable that camera lens closely arrives ∞, in the design by the way that focus adjusting mechanism is added, using left-handed bull tooth spiral shell
Line and fine thread mutually cooperate transmission, have the advantages that focusing is quick, flexible, backlash is small.Runner 4 is specially focused respectively with just
Anti- tooth is connected with rear group lens barrel 19 and body tube 5, and focusing ring 2 locks jackscrew 3 by three focusing rings come solid with focusing runner 4
It is fixed.Focusing runner 4 is driven to rotate in one direction when external force rotates focusing ring 2, the body tube 5 connecting at this time with its positive and negative tooth
It is moved in the opposite direction respectively with rear group lens barrel 19.Entire optical path takes place along the rotary motion of optical axis in order to prevent, therefore
One limit film 18 is set between the rear portion and rear group lens barrel of body tube come limit rear group lens barrel 19 rotate, and because rear group lens barrel 20 with
Preceding group lens barrel 1 is connected through a screw thread into the structure to link together, therefore has driven whole group mechanical when adjusting focusing ring and optical path knot
Structure does the movement far from or close to focal plane, to realize the function of focusing.
But this focusing range is limited, and bolt and the slot limitation relied primarily between focusing ring 2 and body tube 5 comes
Guarantee focusing range.In focus adjusting mechanism, in order to guarantee the concentricity in focussing process of precision and camera lens of focusing, when design
Grinding operation to be passed through is threadedly engaged between runner 4 and body tube 5 and rear group lens barrel 19 it is required that focusing.
In the present embodiment, the diaphragm regulating mechanism includes the aperture setting ring 7 being placed in the middle part of body tube, the diaphragm
It adjusts and is radially bolted with the diaphragm guide pin 6 protruded into rear group lens barrel across body tube on ring, group of the diaphragm guide pin and diaphragm
Lever is connected, and the second locking matched with body tube for aperture setting ring locking is additionally provided on the aperture setting ring
Nail 23.For the function of realizing aperture adjusting, iris diaphgram 20 is fixed on rear group by the snap ring 22 being set in rear group lens barrel
It on lens barrel 19, and is positioned by diaphragm locking nail, while diaphragm 20 and aperture setting ring 7 is connected by diaphragm guide pin 6, led to
It crosses and opens the slot of certain angle in rear group lens barrel to control the size of diaphragm opening, use ring under different illumination conditions to meet
Border.
In view of the practicability of industrial lens, in order to more intuitively indicate close-shot away from the change procedure to infinity,
Body tube 5 has indicated focusing position corresponding to different object distances above, while also marking out the corresponding phase of different aperture positions
To aperture value.Corresponding anchor point is all done on focusing ring 2 and aperture setting ring 6, convenient for checking.
Utilize the refractive index of the positive and negative eyeglass of gluing unit and the difference of dispersion, the aberration of corrective lens.It is mobile in optical path simultaneously
On, it is mobile using whole group eyeglass, so that resolution of lens is up to 5,000,000, distortion less than 0.5%.
The technical indicator that the present invention realizes is as follows:
1. focal length: f '=12mm
2. close-shot is away from 100mm
3. distortion :≤0.5%
4. relative aperture D/f '=1/2.4
5. 2 ω: 49.25 ° of field angle
6. resolution ratio: being better than 5,000,000 pixels
7. total length of light path ∑≤50.81mm
8. applicable spectral line range: 450nm~650nm
9. camera lens outer dimension: φ 35.5 × 41.1.
The foregoing is merely presently preferred embodiments of the present invention, for the ordinary skill in the art, according to this hair
Bright introduction designs the low distorted optical industrial lens of various forms of high-resolution and does not need creative labor, not
The case where being detached from the principle and spirit of the invention is descended to the mortal world the equivalent change made according to scope of the present invention patent, modification, replacement
And modification, it is all covered by the present invention.
Claims (6)
1. a kind of low distorted optical industrial lens of high-resolution, which is characterized in that including being set in lens construction to enter along light
Penetrate preceding group of eyeglass, iris diaphgram that direction sets gradually and after organize eyeglass, it is described before group eyeglass successively by the first biconvex lens, negative
Selenodont lens, the first biconcave lens, the second biconvex lens, the first positive selenodont lens group at, it is described after group eyeglass successively by
The gluing unit of second biconcave lens and third biconvex lens contiguity, the second positive selenodont lens and the 4th biconvex lens composition, institute
The airspace stated between preceding group of eyeglass and rear group eyeglass is 5.9mm, between the air between the preceding group eyeglass and iris diaphgram C
It is divided into 3.82mm, the airspace between the iris diaphgram and rear group eyeglass is 2.09mm, first biconvex lens and negative
Airspace between selenodont lens is 0.10mm, the airspace between the negative selenodont lens and the first biconcave lens
For 3.94mm, the airspace between first biconcave lens and the second biconvex lens is 1.32mm, second lenticular
Airspace between mirror and the first positive selenodont lens is 0.1mm, second biconcave lens and third biconvex lens contiguity
Gluing unit and the second positive selenodont lens between airspace be 0.10mm, the second positive selenodont lens and the 4th pair
Airspace between convex lens is 0.10mm；The focal length f ' of camera lens is 12mm；The material of first biconvex lens is H-
The radius of curvature of LaK2A, refractive index 1.69211, the first lens left side are 38.7mm, and the radius of curvature on the first lens right side is
650.1mm；The material of the negative selenodont lens is H-ZK3, refractive index 1.58913, the curvature on the negative selenodont lens left side
Radius is 23.4mm, and the radius of curvature on the negative selenodont lens right side is -7.3mm；The material of first biconcave lens is H-
F13, refractive index 1.62588, the radius of curvature on the first biconcave lens left side are -15.2mm, the song on the first biconcave lens right side
Rate radius is -15.2mm；The material of second biconvex lens is H-FK61, refractive index 1.497, the second biconvex lens left side
Radius of curvature be 177.7mm, the radius of curvature on the second biconvex lens right side is 12.4mm；The first positive selenodont lens
Material is H-ZF52A, and refractive index 1.84666, the radius of curvature on the first positive selenodont lens left side is 15.4mm, first first month of the lunar year
The radius of curvature on the tooth form lens right side is -96.2mm；The material of second biconcave lens is H-ZF62, and refractive index is
1.92286, the radius of curvature on the second biconcave lens left side is -17.5mm, the radius of curvature on the second biconcave lens right side is -
17.5mm；
The material of the third biconvex lens is H-ZK10, refractive index 1.6221, the radius of curvature on the third biconvex lens left side
For 17.5mm, the radius of curvature on the third biconvex lens right side is 11.9mm；The material of the second positive selenodont lens is H-
ZLaF4LA, refractive index 1.91082, the radius of curvature on the second positive selenodont lens left side are -135.7mm, the second positive selenodont
The radius of curvature on the lens right side is 22.3mm；The material of 4th biconvex lens be H-ZLaF75A, refractive index 1.90366,
The radius of curvature on the 4th biconvex lens left side is 39.5mm, and the radius of curvature on the 4th biconvex lens right side is 188.6mm.
2. a kind of low distorted optical industrial lens of high-resolution according to claim 1, which is characterized in that the camera lens knot
Structure includes the preceding group lens barrel for installing preceding group of eyeglass, and the rear portion of the preceding group lens barrel, which is bolted with, to be installed in body tube and be used for
The rear group lens barrel of eyeglass is organized after installation, the iris diaphgram is set in rear group lens barrel, and focusing is provided in the rear group lens barrel
Mechanism is provided with diaphragm regulating mechanism on the body tube, and the rear portion of body tube is also equipped with attachment base.
3. a kind of low distorted optical industrial lens of high-resolution according to claim 2, which is characterized in that described first pair
Convex lens, negative selenodont lens, the first biconcave lens, the second biconvex lens and the first positive selenodont lens are successively set from after going to
It is placed in preceding group lens barrel, is provided with the first spacer ring between second biconvex lens and the first positive selenodont lens, described first
It is provided with the second spacer ring between biconcave lens and the second biconvex lens, is set between first biconvex lens and negative selenodont lens
It is equipped with third spacer ring, the preceding pressing ring being pressed on front side of the first biconvex lens is also bolted in the preceding group lens barrel.
4. a kind of low distorted optical industrial lens of high-resolution according to claim 2, which is characterized in that the gluing
Group, the second positive selenodont lens and the 4th biconvex lens are set in turn in from front to back in rear group lens barrel, the gluing unit and the
It is provided with the 4th spacer ring between two positive selenodont lens, is provided between the second positive selenodont lens and the 4th biconvex lens
5th spacer ring is also bolted with the rear pressing ring being pressed on rear side of the 4th biconvex lens in the rear group lens barrel.
5. a kind of low distorted optical industrial lens of high-resolution according to claim 2, which is characterized in that the focusing machine
Structure includes the focusing runner being set between body tube and rear group lens barrel, the inner ring rear portion of the focusing runner and rear group lens barrel
Front outer ring bolt and focus the outer ring rear portion of runner and the front inner ring bolt of body tube, are further fixed on runner of focusing
Focusing ring is radially bolted with the locking nail for runner locking of focusing on the body tube.
6. a kind of low distorted optical industrial lens of high-resolution according to claim 2, which is characterized in that the diaphragm tune
Saving mechanism includes the aperture setting ring being placed in the middle part of body tube, is radially bolted on the aperture setting ring and stretches across body tube
Enter the diaphragm guide pin in rear group lens barrel, the diaphragm guide pin is connected with diaphragm, is additionally provided on the aperture setting ring and master
Lens barrel matches the second locking nail for aperture setting ring locking.
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| CN201611170973.5A CN106443975B (en) | 2016-12-16 | 2016-12-16 | A kind of low distorted optical industrial lens of high-resolution |
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| CN106443975B true CN106443975B (en) | 2019-01-04 |
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| CN107608055B (en) * | 2017-09-22 | 2019-12-24 | 福建福光股份有限公司 | Optical lens of ground night star sensor |
| CN107643587B (en) * | 2017-11-11 | 2020-06-26 | 福建福光股份有限公司 | 5.2mm day and night dual-purpose super-high-definition 4K prime lens |
| CN107797259A (en) * | 2017-11-30 | 2018-03-13 | 福建福光股份有限公司 | A kind of super clear 4K tight shots of 5.2mm |
| CN109375354A (en) * | 2018-11-21 | 2019-02-22 | 福建福光股份有限公司 | The industrial camera lens of the low distortion of the high definition of 1/1.8 inch big target surface 6mm focal length and working method |
| CN109459838B (en) * | 2018-12-28 | 2024-05-10 | 福建福光天瞳光学有限公司 | Wide-angle high-resolution vehicle-mounted optical system and imaging method |
| CN110261978B (en) * | 2019-07-09 | 2024-07-05 | 福建福光天瞳光学有限公司 | High-definition low-distortion industrial lens and working method thereof |
| CN110895366B (en) * | 2019-11-22 | 2024-06-07 | 福建福光天瞳光学有限公司 | 0.5-Time 110mm object distance high-resolution industrial double telecentric lens |
| CN112034604A (en) * | 2020-09-08 | 2020-12-04 | 南京华群光电技术有限公司 | Telecentric lens suitable for industrial detection |
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