CN110261978A - A kind of low industrial camera lens and its working method of distorting of high definition - Google Patents
A kind of low industrial camera lens and its working method of distorting of high definition Download PDFInfo
- Publication number
- CN110261978A CN110261978A CN201910614096.3A CN201910614096A CN110261978A CN 110261978 A CN110261978 A CN 110261978A CN 201910614096 A CN201910614096 A CN 201910614096A CN 110261978 A CN110261978 A CN 110261978A
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- Prior art keywords
- lens
- crescent moon
- group
- high definition
- lens barrel
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000003384 imaging method Methods 0.000 claims description 5
- 230000004313 glare Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 230000004075 alteration Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
-
- 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
- G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
-
- 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
Abstract
The present invention relates to a kind of low industrial camera lenses of distortion of high definition, including lens barrel and the optical system being arranged in lens barrel, the optical system includes the front lens group A being negative along the focal power that light incident direction is set gradually from left to right, the rear microscope group B that focal power is positive and the iris diaphgram between front lens group A and rear microscope group B, the front lens group A includes the first negative crescent moon lens set gradually from left to right, first positive crescent moon lens, second negative crescent moon lens, first biconcave lens, first biconvex lens and the negative crescent moon lens of third, first biconvex lens and the negative crescent moon lens of third form the first gluing unit；Microscope group B includes the second biconcave lens, the second biconvex lens, the second positive crescent moon lens and the third biconvex lens set gradually from left to right after described；The invention further relates to a kind of working methods of the low industrial camera lens of distortion of high definition.Structure of the invention is reasonable, easy to operate, can correct aberration, the distortion of light path system.
Description
Technical field
The present invention relates to a kind of industrial camera lens of the low distortion of high definition and its working methods.
Background technique
With the fast development of industrial detection, more and more Machine Vision Detection substitutions are manually detected, to improve
The consistency of product detection efficiency and quality；Especially for: position positioning, bar code identification, character machining, dimensional measurement have
Higher requirement；The problems such as generally existing edge image quality of 8mm short-focus lens is poor currently on the market, distortion is high, can not expire
The high request standard to imaging and distortion of sufficient industrial detection.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of industrial camera lens of the low distortion of high definition and its working method,
It is structurally reasonable, easy to operate, aberration, the distortion of light path system can be corrected.
The technical scheme is that a kind of low industrial camera lens that distorts of high definition, including lens barrel and setting are in lens barrel
Optical system, the optical system includes the front lens group being negative along the focal power that light incident direction is set gradually from left to right
A, the rear microscope group B and the iris diaphgram between front lens group A and rear microscope group B that focal power is positive, the front lens group A include from left
The negative crescent moon lens of first set gradually to the right, the first positive crescent moon lens, the second negative crescent moon lens, the first biconcave lens, first
Biconvex lens and the negative crescent moon lens of third, first biconvex lens and the negative crescent moon lens of third form the first gluing unit；It is described
Microscope group B includes the second biconcave lens, the second biconvex lens, the second positive crescent moon lens and the third pair set gradually from left to right afterwards
Convex lens, second biconcave lens and the second biconvex lens form the second gluing unit.
Further, the airspace between light incident direction, the front lens group A and rear microscope group B is 9.8mm；Before
Airspace between microscope group A and iris diaphgram is 5.5mm；Airspace between iris diaphgram and rear microscope group B is 4.3mm.
Further, along light incident direction, the front lens group A, the first negative crescent moon lens and the first positive crescent moon lens
Between airspace be 2.8mm, airspace between the first positive crescent moon lens and the second negative crescent moon lens is 0.1mm, the
Airspace between two negative crescent moon lens and the first biconcave lens is 3.8mm, between the first biconcave lens and the first gluing unit
Air distance be 7.3 ~ 8.9mm；After described in microscope group B, the airspace between the second gluing unit and the second positive crescent moon lens
For 0.1mm, the airspace between the second positive crescent moon lens and third biconvex lens is 0.1mm.
Further, along light incident direction, the lens barrel includes preceding lens barrel, middle lens barrel, rear lens barrel.
Further, rear lens barrel front end is provided with the CAM slot to focus, mirror before being fixed on is equipped in CAM slot
The focusing guide pin of tube rear end is equipped with focusing ring in rear lens barrel front end sleeve, is provided on focusing ring to cooperate with focusing guide pin
Rectangle straight trough.
Further, the preceding lens barrel includes lens barrel A to fix the first negative crescent moon lens and to fix first just
Crescent moon lens, the second negative crescent moon lens, the first biconcave lens lens barrel B.
Further, it is provided in focusing ring front end with the retaining ring to fall off to avoid focusing ring.
Further, the lock-screw to microscope base front end after being fixed on retaining ring is provided on retaining ring.
Further, it is provided with the diaphragm regulating tank to adjust iris diaphgram on rear lens barrel, is covered in rear lens barrel periphery
Equipped with the aperture setting ring cooperated with diaphragm regulating tank, it is fixed on aperture setting ring and is led with the diaphragm of diaphragm regulating tank cooperation
Nail, is provided with attachment base in aperture setting ring rear end.
Another technical solution provided by the invention is a kind of working method of the low industrial camera lens that distorts of high definition, including
The industrial camera lens of the low distortion of the high definition: (1) when light incidence, optical path sequence enter front lens group A, iris diaphgram and after
It is imaged after microscope group B, when light passes through front lens group A, the preceding lens barrel of carrying front lens group A and middle lens barrel internal diameter are rationally effective
The entrance for having intercepted extra light has achieved the purpose that eliminate veiling glare, when light passes through iris diaphgram by adjusting in diaphragm
Diameter size adjusts lens aperture purpose to reach, and light effectively penetrates the second gluing unit and makes when microscope group B after light warp
Camera lens shows better image quality in imaging target surface；(2) when needing to focus to camera lens, focusing ring, focusing ring are rotated
Rotation passes through rectangle straight trough and drives focusing guide pin rotation, and then preceding lens barrel rotation is driven to focus, and CAM slot can lead focusing
Nail, which is oriented to and is focused, limits stroke；(3) when needing that iris diaphgram is adjusted, aperture setting ring, diaphragm tune are rotated
It saves ring rotation and drives diaphragm guide pin rotation, and then drive iris diaphgram rotation, diaphragm regulating tank can be oriented to diaphragm guide pin
With limitation stroke.
Compared with prior art, the beneficial effects of the present invention are: structure of the invention is reasonable, easy to operate, optical path can be corrected
The aberration of system, distortion.
To can be more clearly understood the above objects, features and advantages of the present invention, with reference to the accompanying drawing to the present invention
Specific embodiment elaborate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of optical system of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of CAM of embodiment of the present invention slot；
Fig. 4 is the structural schematic diagram of diaphragm of embodiment of the present invention regulating tank；
Fig. 5 is MTF curve figure of the embodiment of the present invention；
Fig. 6 is distortion change curve of the embodiment of the present invention；
In figure: 100- lens barrel；Lens barrel before 110-；111- lens barrel A；112- lens barrel B；Lens barrel in 120-；Lens barrel after 130-；131-
CAM slot；132- focusing guide pin；133- diaphragm regulating tank；140- focusing ring；141- rectangle straight trough；150- retaining ring；151- locking
Screw；160- aperture setting ring；161- diaphragm guide pin；170- attachment base；200- optical system；210- front lens group A；211- first
Negative crescent moon lens；The positive crescent moon lens of 212- first；The negative crescent moon lens of 213- second；The first biconcave lens of 214-；215- first pair
Convex lens；The negative crescent moon lens of 216- third；Microscope group B after 220-；The second biconcave lens of 221-；The second biconvex lens of 222-；223-
Second positive crescent moon lens；224- third biconvex lens；230- iris diaphgram.
Specific embodiment
As shown in Fig. 1 ~ 6, the low industrial camera lens that distorts of a kind of high definition, including lens barrel 100 and the light being arranged in lens barrel
System 200, the optical system 200 include the preceding mirror being negative along the focal power that light incident direction is set gradually from left to right
Group A210, the rear microscope group B220 that focal power is positive and the iris diaphgram 230 between front lens group A210 and rear microscope group B220, institute
It is negative comprising the first negative crescent moon lens 211, the first positive crescent moon lens 212, second set gradually from left to right to state front lens group A210
Crescent moon lens 213, the first biconcave lens 214, the first biconvex lens 215 and the negative crescent moon lens 216 of third, first lenticular
Mirror 215 and the negative crescent moon lens 216 of third form the first gluing unit；Microscope group B220 includes the set gradually from left to right after described
Two biconcave lens 221, the second biconvex lens 222, the second positive crescent moon lens 223 and third biconvex lens 224, second concave-concave
Lens 221 and the second biconvex lens 222 form the second gluing unit.
In the present embodiment, along light incident direction, the airspace between the front lens group A210 and rear microscope group B220 is
9.8mm；Airspace between front lens group A210 and iris diaphgram 230 is 5.5mm；Iris diaphgram 230 and rear microscope group B220 it
Between airspace be 4.3mm.
In the present embodiment, along light incident direction, in the front lens group A210, the first negative crescent moon lens 211 and first are just
Airspace between crescent moon lens 212 is 2.8mm, the sky between the first positive crescent moon lens 212 and the second negative crescent moon lens 213
0.1mm is divided between gas, the airspace between the second negative crescent moon lens 213 and the first biconcave lens 214 be 3.8mm, first pair
Air distance between concavees lens 214 and the first gluing unit is 7.3 ~ 8.9mm；After described in microscope group B220, the second gluing unit with
Airspace between second positive crescent moon lens 223 is 0.1mm, between the second positive crescent moon lens 223 and third biconvex lens 224
Airspace be 0.1mm.
In the present embodiment, along light incident direction, the lens barrel 100 includes preceding lens barrel 110, middle lens barrel 120, rear lens barrel
130。
In the present embodiment, rear 130 front end of lens barrel is provided with the CAM slot 131 to focus, is equipped in CAM slot 131
The focusing guide pin 132 of 110 rear end of lens barrel before being fixed on is equipped with focusing ring 140 in rear 130 front end sleeve of lens barrel, on focusing ring 140
It is provided with the rectangle straight trough 141 to cooperate with focusing guide pin 132.
In the present embodiment, the preceding lens barrel 110 include lens barrel A111 to fix the first negative crescent moon lens 211 and to
Fix the lens barrel B112 of the first positive crescent moon lens 212, the second negative crescent moon lens 213, the first biconcave lens 214.
In the present embodiment, it is provided in 140 front end of focusing ring with the retaining ring 150 to fall off to avoid focusing ring 140.
In the present embodiment, the lock-screw to microscope base front end after being fixed on retaining ring 150 is provided on retaining ring 150
151。
In the present embodiment, the diaphragm regulating tank 133 to adjust iris diaphgram 230 is provided on rear lens barrel 130, rear
130 periphery of lens barrel be arranged with diaphragm regulating tank 133 cooperate aperture setting ring 160, be fixed on aperture setting ring 160 with
The diaphragm guide pin 161 that diaphragm regulating tank 133 cooperates, is provided with attachment base 170 in 160 rear end of aperture setting ring.
Table 1, specific lens parameters such as following table
In the present embodiment, the technical indicator that this optical system is realized is as follows:
(1) focal length: f '=8mm；(2) relative aperture: D/f '=1/2.4；(3) areas imaging: 200mm-Inf；(4) resolution ratio: >=
5MP；(5) optical distortion :≤- 0.5%；(6) total length of light path: ∑≤60.5 ± 0.1mm；(7) interface: C-Mount；(8) aperture/
The type of focusing: manually.
The working method of the low industrial camera lens that distorts of a kind of high definition, including the low industrial camera lens of distortion of high definition: (1)
When light incidence, optical path sequence is imaged after entering front lens group A210, iris diaphgram 230 and rear microscope group B220, works as light
The preceding lens barrel 110 of carrying front lens group A210 and 120 internal diameter of middle lens barrel have rationally effectively intercepted more when line passes through front lens group A210
The entrance of remaining light line has achieved the purpose that eliminate veiling glare, when light passes through iris diaphgram 230, by adjusting iris diaphgram 230
Inner diameter size adjusts lens aperture purpose to reach, and after light warp when microscope group B220, light effectively penetrates the second gluing
Group is so that camera lens shows better image quality in imaging target surface；(2) when needing to focus to camera lens, focusing ring is rotated
140, focusing ring 140 rotation by rectangle straight trough 141 drive focusing guide pin 132 rotate, and then drive before lens barrel 110 rotate into
Row focusing, CAM slot 131, which can be oriented to and be focused to focusing guide pin 132, limits stroke；(3) when need to iris diaphgram 230 into
When row is adjusted, aperture setting ring 160 is rotated, the rotation of aperture setting ring 160 drives diaphragm guide pin 161 to rotate, and then drives variable
Diaphragm 230 rotates, and diaphragm regulating tank 133 can be oriented to and be limited stroke to diaphragm guide pin 161.
Aforesaid operations process and software and hardware configuration are only used as presently preferred embodiments of the present invention, are not intended to limit the present invention
The scope of the patents, it is all using equivalents made by description of the invention and accompanying drawing content, be applied directly or indirectly in phase
Technical field is closed, is included within the scope of the present invention.
Claims (10)
1. a kind of low industrial camera lens of distortion of high definition, it is characterised in that: including lens barrel and the optical system being arranged in lens barrel,
The optical system includes that the front lens group A being negative along the focal power that light incident direction is set gradually from left to right, focal power are
Positive rear microscope group B and the iris diaphgram between front lens group A and rear microscope group B, the front lens group A include successively to set from left to right
The negative crescent moon lens of first set, the first positive crescent moon lens, the second negative crescent moon lens, the first biconcave lens, the first biconvex lens and
The negative crescent moon lens of third, first biconvex lens and the negative crescent moon lens of third form the first gluing unit；Microscope group B includes after described
The second biconcave lens, the second biconvex lens, the second positive crescent moon lens and the third biconvex lens set gradually from left to right, it is described
Second biconcave lens and the second biconvex lens form the second gluing unit.
2. the low industrial camera lens that distorts of high definition according to claim 1, it is characterised in that: described along light incident direction
Airspace between front lens group A and rear microscope group B is 9.8mm；Airspace between front lens group A and iris diaphgram is 5.5mm；
Airspace between iris diaphgram and rear microscope group B is 4.3mm.
3. the low industrial camera lens that distorts of high definition according to claim 2, it is characterised in that: described along light incident direction
In front lens group A, the airspace between the first negative crescent moon lens and the first positive crescent moon lens is 2.8mm, the first positive crescent moon lens
Airspace between the second negative crescent moon lens is 0.1mm, the air between the second negative crescent moon lens and the first biconcave lens
Between be divided into 3.8mm, the air distance between the first biconcave lens and the first gluing unit be 7.3 ~ 8.9mm；After described in microscope group B,
Airspace between second gluing unit and the second positive crescent moon lens is 0.1mm, the second positive crescent moon lens and third biconvex lens
Between airspace be 0.1mm.
4. the low industrial camera lens that distorts of high definition according to claim 3, it is characterised in that: described along light incident direction
Lens barrel includes preceding lens barrel, middle lens barrel, rear lens barrel.
5. the low industrial camera lens that distorts of high definition according to claim 4, it is characterised in that: be arranged in rear lens barrel front end useful
With the CAM slot of focusing, it is equipped with the focusing guide pin of lens barrel rear end before being fixed in CAM slot, is equipped with and adjusts in rear lens barrel front end sleeve
Jiao Huan is provided with to the rectangle straight trough with focusing guide pin cooperation on focusing ring.
6. the low industrial camera lens that distorts of high definition according to claim 4, it is characterised in that: the preceding lens barrel includes to solid
The lens barrel A of fixed first negative crescent moon lens and to fix the first positive crescent moon lens, the second negative crescent moon lens, the first biconcave lens
Lens barrel B.
7. the low industrial camera lens that distorts of high definition according to claim 5, it is characterised in that: be arranged in focusing ring front end useful
The retaining ring to fall off to avoid focusing ring.
8. the low industrial camera lens that distorts of high definition according to claim 7, it is characterised in that: be provided on retaining ring to incite somebody to action
Retaining ring is fixed on the lock-screw of rear microscope base front end.
9. the low industrial camera lens of distortion of high definition according to claim 4, it is characterised in that: be provided on rear lens barrel to
The diaphragm regulating tank for adjusting iris diaphgram is arranged with the aperture setting ring with the cooperation of diaphragm regulating tank in rear lens barrel periphery, in light
Door screen adjusts the diaphragm guide pin being fixed on ring with the cooperation of diaphragm regulating tank, and aperture setting ring rear end is provided with attachment base.
10. a kind of working method of the low industrial camera lens that distorts of high definition, including the low distortion industry of high definition as claimed in claim 9
With camera lens, it is characterised in that: (1) when light incidence, it is laggard that optical path sequence enters front lens group A, iris diaphgram and rear microscope group B
Row imaging, when light passes through front lens group A, the preceding lens barrel of carrying front lens group A and middle lens barrel internal diameter have rationally effectively been intercepted extra
The entrance of light has achieved the purpose that eliminate veiling glare, when light passes through iris diaphgram by adjusting diaphragm inner diameter size to reach
To lens aperture purpose is adjusted, light effectively penetrates the second gluing unit camera lens is being imaged when microscope group B after light warp
Better image quality is showed on target surface；(2) when needing to focus to camera lens, focusing ring is rotated, focusing ring rotation passes through length
Rectangular straight trough drives focusing guide pin rotation, and then preceding lens barrel rotation is driven to focus, and CAM slot can be oriented to focusing guide pin
Stroke is limited with focusing；(3) when needing that iris diaphgram is adjusted, aperture setting ring is rotated, aperture setting ring rotates band
Dynamic diaphragm guide pin rotation, and then iris diaphgram rotation is driven, diaphragm regulating tank can be oriented to diaphragm guide pin and be limited stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614096.3A CN110261978A (en) | 2019-07-09 | 2019-07-09 | A kind of low industrial camera lens and its working method of distorting of high definition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614096.3A CN110261978A (en) | 2019-07-09 | 2019-07-09 | A kind of low industrial camera lens and its working method of distorting of high definition |
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| CN110261978A true CN110261978A (en) | 2019-09-20 |
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ID=67925122
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910614096.3A Pending CN110261978A (en) | 2019-07-09 | 2019-07-09 | A kind of low industrial camera lens and its working method of distorting of high definition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111061027A (en) * | 2020-01-21 | 2020-04-24 | 厦门力鼎光电股份有限公司 | Iris-diaphragm-variable machine vision lens with liquid lens |
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