CN203929068U - A kind of wide field optical system - Google Patents

A kind of wide field optical system Download PDF

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Publication number
CN203929068U
CN203929068U CN201420211558.XU CN201420211558U CN203929068U CN 203929068 U CN203929068 U CN 203929068U CN 201420211558 U CN201420211558 U CN 201420211558U CN 203929068 U CN203929068 U CN 203929068U
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China
Prior art keywords
measured piece
lens barrel
lens
objective table
wide field
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CN201420211558.XU
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Chinese (zh)
Inventor
周峰
黄芳林
邓崇凯
杜勇刚
冯俊达
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Dongguan Pumisi Precision Instrument Co Ltd
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Dongguan Pumisi Precision Instrument Co Ltd
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Abstract

A kind of wide field optical system, relates to optical measuring technique.Comprise backlight, objective table, source of parallel light, camera lens and optical imagery is converted to the sensor of digital signal; Described camera lens is the two telecentric lens of a kind of double enlargement factor, on its adapter, be provided with first interface and the second interface, first interface and the second interface are all connected with story board, are provided with the device of the reflected light on measured piece being invested respectively to each story board in adapter; Described sensor and story board are equipped one by one; Thereby the calibration system that the physical size that also comprises each pixel representative of the imaging to measured piece is demarcated, the imaging to measured piece and its standard video autoregistration are realized the matching system that the placement location of measured piece is adjusted and the imaging of measured piece are carried out to the accurate measuring system of picture detecting.Can detect measured piece by different enlargement factors with two different cameras, after zoom, need not adjust, guarantee the accuracy of enlargement factor, measuring accuracy is high.

Description

A kind of wide field optical system
Technical field
The utility model relates to optical measuring technique, and espespecially a kind of wide field optical system is mainly used in that product quality is carried out to precision and detects.
Background technology
Product quality is the life of enterprise.Improve and ensure that product quality be unable to do without detection, testing product quality has become the target that each modern enterprise is pursued rapidly and accurately.At present, product quality is detected to main traditional measurement instrument and the dependence manpower of adopting and completes, really have many defects:
One, detection efficiency is low.Adopt traditional measurement instrument, slowly, operation is many in operation, and each procedure lacks continuity, and the time is long, causes detection efficiency low.
Its two, human factor impact is large.Entirely detect with artificial realization, detection effect is subject to the impact of the human factors such as testing staff's quality, working experience, job morale, working attitude, causes the objectivity of testing result and reliability uneven.
Its three, to some high-accuracy electronic units, as circuit board, chip etc., often change tricklely, only depend on manual method to detect to these slight changes, must Ling Zeta road.
Its four, along with birth and the development of optical measuring technique, product is carried out to the fast image measuring system of high magnification image taking and is favored.But this detection system also needs to continue to improve at present: 1) this detection system can't obtain each measurement parameter of product image,, image is not demarcated meanwhile, cannot obtain the full-size(d) of product from image, and error is large.2) putting position and the direction of conventional optical image measuring instrument to measuring piece has strict requirement, requires to be placed on markd region, that level is put etc., otherwise, cannot obtain Measurement accuracy result, cannot complete measurement even at all.3) function singleness of camera lens, can only detect the measured piece surface parallel with camera lens, and the surface in the measured piece vertical with camera lens surface or other orientation need to reappose measured piece upturned position.As need to be to the measured piece parallel with camera lens the cell wall of lip-deep groove and the hole wall of some functional hole detect, because camera lens is fixed, can only arrive the measured piece surface parallel with camera lens by radiographic measurement, and cell wall and hole wall can not directly be measured, must be by measured piece upset or mobile, make cell wall and hole wall parallel with camera lens, its detection efficiency is low, even may damage product; Further, all may be difficult to realize needed effect even if overturn or move.In order to address this problem, some propositions arrange camera lens and the camera apparatus of different azimuth, bear separately the radiographic measurement to different azimuth surface, but the equipment needing increases, testing cost improves, nonetheless, and under many situations, because detection space is little, in limited detection space, more camera apparatus is installed and camera lens certainly will affect testing result.
Summary of the invention
The utility model technical issues that need to address are the above-mentioned deficiencies that overcome prior art, and a kind of wide field optical system is provided.This system needn't manually repeatedly be adjusted the position of measured piece, can realize wide field, high precision and low distortion imaging; Also there is the function that the physical size of each pixel representative of the imaging to measured piece is demarcated, have for the imaging to measured piece and its standard picture autoregistration to realize the function that the placement location of measured piece is adjusted, and the imaging of measured piece is carried out to the accurate measurement function detecting.
For this reason, a kind of wide field of the utility model optical system adopts following technical proposals:
A kind of wide field optical system, comprise backlight, objective table, source of parallel light, camera lens and optical imagery is converted to the sensor of digital signal, backlight is arranged on objective table below, and projects for setting off the bias light of measured piece profile to the measured piece being placed on objective table; Objective table can move up and down to adjust the distance of measured piece and camera lens, and source of parallel light and configurations of lenses are above objective table, and source of parallel light is to the measured piece projection directional light being placed on objective table, and camera lens is by the measured piece imaging being placed on objective table; Described camera lens is the two telecentric lens of a kind of double enlargement factor, it comprises front lens barrel group, described front lens barrel group is provided with exchanging structure, changeover mechanism comprises adapter, adapter and front lens barrel group are connected, adapter is provided with first interface and the second interface, first interface and the second interface are all connected with story board, in adapter, be provided with the triangular prism that two cross sections are isosceles right triangle, two described triangular prisms are combined into a square prism, are the translucent part reflective semitransparent film of semi reflective between two faces that two described triangular prisms fit; Described sensor and described story board are equipped one by one.
Technique scheme is further elaborated:
Also comprise the calibration system that the physical size of each pixel representative of the imaging to measured piece is demarcated; Thereby also comprise for the imaging to measured piece and its standard picture autoregistration, draw measured piece placement location with respect to the displacement of measuring when planning and matching system that the anglec of rotation is adjusted the placement location of measured piece; Also comprise the imaging of measured piece is carried out to the accurate measuring system of picture detecting.
Objective table arranges the jacking gear that regulates its height and position.
Background light source is green LED source of parallel light.
Described sensor is CCD or camera.
Backlight, source of parallel light and described sensor are equipped with erect-type support respectively, and objective table is equipped by its jacking gear and erect-type support.
One end of described story board is connected with adapter, and the other end of described story board connects described sensor.
First interface is vertical with the second interface to be arranged, and described story board comprises 1 times of optical lens, 2 times of optical lens or 4 times of optical lens.
Front lens barrel group comprises the first front lens barrel and the second front lens barrel, and one end of the second front lens barrel is fixedly connected with the first front lens barrel, and the other end of the second front lens barrel is fixedly connected with adapter.
The first front lens barrel comprises the first lens barrel, is provided with the first convex lens and the second convex lens in the first lens barrel, and described the second convex lens are positioned at the top of the first convex lens.
The second front lens barrel comprises the second lens barrel, and the second lens barrel is fixedly connected with the first lens barrel, is provided with the 3rd convex lens and for fixing the pressure ring of the 3rd convex lens in the second lens barrel, the 3rd convex lens and pressure ring butt.
The beneficial effects of the utility model are: a kind of wide field of the utility model optical system, except comprising the optical system that backlight, objective table, source of parallel light, camera lens and described sensor form, also comprise calibration system, matching system and measuring system of picture, can implement high precision to the measurement parameter of measured piece and detect.Can detect measured piece according to different enlargement factors with two different cameras, after zoom, need not adjust, need not make any adjustments measured piece and detection system, guarantee the accuracy of enlargement factor, meet the measurement multiple demand that user is different, improve measuring accuracy.Objective table arranges the jacking gear that regulates its height and position, can be according to the size of measured piece, and the distance of flexible measured piece and camera lens.Not only distort low, and simplified equipment, testing cost is low.
Brief description of the drawings
Fig. 1 is the utility model schematic perspective view;
The schematic perspective view of the camera lens that Fig. 2 uses for the utility model;
Fig. 3 is the right view of Fig. 2;
Fig. 4 is A-A cut-away view in Fig. 3;
The decomposing schematic representation of the camera lens that Fig. 5 uses for the utility model;
Fig. 6 is changeover mechanism decomposing schematic representation.
In figure: 100, backlight; 200, objective table; 201, jacking gear; 300, source of parallel light; 400, camera lens; 500, sensor; 600, support;
1, adapter; 11, first interface; 12, the second interface; 2, triangular prism; 3, part reflective semitransparent film; 5, the first front lens barrel; 51, the first lens barrel; 52, the first convex lens; 53, the second convex lens; 6, the second front lens barrel; 61, the second lens barrel; 62, the 3rd convex lens; 63, pressure ring; 7, story board.
Embodiment
Introduce embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in Fig. 1 to 2, a kind of wide field optical system, comprise backlight 100, objective table 200, source of parallel light 300, camera lens 400 and optical imagery is converted to the sensor 500 of digital signal, backlight 100 is arranged on objective table 200 belows, and projects for setting off the bias light of measured piece profile to the measured piece being placed on objective table 200, objective table 200 can move up and down to adjust the distance of measured piece and camera lens 400, source of parallel light 300 and camera lens 400 are configured in the top of objective table 200, source of parallel light 300 is to the measured piece projection directional light being placed on objective table 200, and camera lens 400 is by the measured piece imaging being placed on objective table 200, described sensor 500 is equipped with camera lens 400, described camera lens 400 is the two telecentric lens of a kind of double enlargement factor, it comprises front lens barrel group, described front lens barrel group is provided with exchanging structure, changeover mechanism comprises adapter 1, adapter 1 is connected with front lens barrel group, adapter 1 is provided with first interface 11 and the second interface 12, first interface 11 and the second interface 12 are all connected with story board 7, in adapter 1, be provided with the triangular prism 2 that two cross sections are isosceles right triangle, two described triangular prisms 2 are combined into a square prism, it between two faces that two described triangular prisms 2 fit, is the translucent part reflective semitransparent film 3 of semi reflective, described sensor 500 is equipped with described story board 7.
Also comprise the calibration system that the physical size of each pixel representative of the imaging to measured piece is demarcated, in whole calibration process, can complete and proofread and correct and demarcate two work.
Thereby also comprise for the imaging to measured piece and its standard picture autoregistration, draw measured piece placement location with respect to the displacement of measuring when planning and matching system that the anglec of rotation is adjusted the placement location of measured piece;
Also comprise the imaging of measured piece is carried out to the accurate measuring system of picture detecting.
Objective table 200 arranges the jacking gear 201 that regulates its height and position.
Background light source 100 is green LED source of parallel light.
Described sensor 500 is CCD or camera.
Backlight 100, source of parallel light 300 and described sensor 500 are equipped with erect-type support 600 respectively, and objective table 200 is equipped with erect-type support 600 by its jacking gear 201.
As shown in Fig. 2,3,4 and 5, one end of described story board 7 is connected with adapter 1, and the other end of described story board 7 connects described sensor 500.
First interface 11 and the vertical setting of the second interface 12, described story board 7 comprises 1 times of optical lens, 2 times of optical lens or 4 times of optical lens.
When measurement, measured piece is placed on objective table 200 and irradiated by source of parallel light 300, light is bright, the reflection ray of measured piece arrives two triangular prism 2 places through front lens barrel group, between two triangular prisms 2, be provided with the diaphragm 3 of a half-reflection and half-transmission, the first interface 11 of adapter 1 and the second interface 12 are all connected with optical lens 7, the other end of two optical lens 7 is all connected with camera, the reflection ray of measured piece is divided into two-beam line by the diaphragm 3 of half-reflection and half-transmission, two-beam line enters respectively in two story boards 7 through corresponding triangular prism 2 again, realize the function that two place's cameras can detect measured piece, especially can detect measured piece according to different enlargement factors with two different cameras, after zoom, need not adjust, need not make any adjustments measured piece and detection system, guarantee the accuracy of enlargement factor, meet the measurement multiple demand that user is different, improve measuring accuracy.
Front lens barrel group comprises that one end of the first front lens barrel 5 and the front lens barrel 6 of the second front lens barrel 6, the second is fixedly connected with the first front lens barrel 5, and the other end of the second front lens barrel 6 is fixedly connected with adapter 1.The first front lens barrel 5 comprises in the first lens barrel 51, the first lens barrels 51 and is provided with the first convex lens 52 and the second convex lens 53, and described the second convex lens 53 are positioned at the top of the first convex lens 52.The second front lens barrel 6 comprises that the second lens barrel 61, the second lens barrels 61 are fixedly connected with the first lens barrel 51, is provided with the 3rd convex lens 62 and for fixing pressure ring 63, the three convex lens 62 and pressure ring 63 butts of the 3rd convex lens 62 in the second lens barrel 61.The measured piece being placed on objective table 200 is irradiated by source of parallel light 300, the reflection ray of measured piece arrives two triangular prisms 2 through the first convex lens 52, the second convex lens 53 and the 3rd convex lens 62, be divided into two-beam line through two triangular prisms 2 by half-reflection and half-transmission diaphragm 3 again, then enter respectively in two story boards 7.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.

Claims (10)

1. wide field's optical system, comprise backlight, objective table, source of parallel light, camera lens and optical imagery is converted to the sensor of digital signal, it is characterized in that: backlight is arranged on objective table below, and projects for setting off the bias light of measured piece profile to the measured piece being placed on objective table; Objective table can move up and down to adjust the distance of measured piece and camera lens, and source of parallel light and configurations of lenses are above objective table, and source of parallel light is to the measured piece projection directional light being placed on objective table, and camera lens is by the measured piece imaging being placed on objective table; Described camera lens is the two telecentric lens of a kind of double enlargement factor, it comprises front lens barrel group, described front lens barrel group is provided with exchanging structure, changeover mechanism comprises adapter, adapter and front lens barrel group are connected, adapter is provided with first interface and the second interface, first interface and the second interface are all connected with story board, in adapter, be provided with the triangular prism that two cross sections are isosceles right triangle, two described triangular prisms are combined into a square prism, are the translucent part reflective semitransparent film of semi reflective between two faces that two described triangular prisms fit; Described sensor and described story board are equipped one by one.
2. a kind of wide field according to claim 1 optical system, it is characterized in that, also comprise: the calibration system that the physical size of each pixel representative of the imaging to measured piece is demarcated, thereby for the imaging to measured piece and its standard picture autoregistration, draw measured piece placement location with respect to the displacement of measuring when planning and matching system that the anglec of rotation is adjusted the placement location of measured piece; The imaging of measured piece is carried out to the accurate measuring system of picture detecting.
3. a kind of wide field according to claim 1 and 2 optical system, is characterized in that: objective table arranges the jacking gear that regulates its height and position.
4. a kind of wide field according to claim 1 and 2 optical system, is characterized in that: background light source is green LED source of parallel light.
5. a kind of wide field according to claim 1 and 2 optical system, is characterized in that: described sensor is CCD or camera.
6. a kind of wide field according to claim 1 and 2 optical system, is characterized in that: backlight, source of parallel light and described sensor are equipped with erect-type support respectively, and objective table is equipped by its jacking gear and erect-type support.
7. a kind of wide field according to claim 1 and 2 optical system, is characterized in that: one end of described story board is connected with adapter, and the other end of described story board connects described sensor; First interface is vertical with the second interface to be arranged, and described story board comprises 1 times of optical lens, 2 times of optical lens or 4 times of optical lens.
8. a kind of wide field according to claim 1 and 2 optical system, it is characterized in that: front lens barrel group comprises the first front lens barrel and the second front lens barrel, one end of the second front lens barrel is fixedly connected with the first front lens barrel, and the other end of the second front lens barrel is fixedly connected with adapter.
9. a kind of wide field according to claim 8 optical system, is characterized in that: the first front lens barrel comprises the first lens barrel, in the first lens barrel, be provided with the first convex lens and the second convex lens, described the second convex lens are positioned at the top of the first convex lens.
10. a kind of wide field according to claim 8 optical system, it is characterized in that: the second front lens barrel comprises the second lens barrel, the second lens barrel is fixedly connected with the first lens barrel, is provided with the 3rd convex lens and for fixing the pressure ring of the 3rd convex lens in the second lens barrel, the 3rd convex lens and pressure ring butt.
CN201420211558.XU 2014-04-29 2014-04-29 A kind of wide field optical system Active CN203929068U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277127A (en) * 2014-07-03 2016-01-27 石家庄市申跃电子仪器有限公司 Intelligent cable thickness block detection instrument
CN105841618A (en) * 2016-06-08 2016-08-10 杭州汉振科技有限公司 Two-dimensional and three-dimensional combined measuring instrument and data fusion calibration method thereof
CN105953729A (en) * 2016-06-09 2016-09-21 佛山市勾股动力信息技术有限公司 Mobile image speed measuring instrument
CN108012051A (en) * 2017-11-02 2018-05-08 东莞市普密斯精密仪器有限公司 A kind of optical detection apparatus with multiple image collections
CN110221396A (en) * 2019-07-17 2019-09-10 深圳市沃特隆科技有限公司 A kind of novel telecentric lens structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105277127A (en) * 2014-07-03 2016-01-27 石家庄市申跃电子仪器有限公司 Intelligent cable thickness block detection instrument
CN105841618A (en) * 2016-06-08 2016-08-10 杭州汉振科技有限公司 Two-dimensional and three-dimensional combined measuring instrument and data fusion calibration method thereof
CN105841618B (en) * 2016-06-08 2019-05-10 浙江汉振智能技术有限公司 Two-dimentional three-dimensional combined type measuring instrument and its data fusion scaling method
CN105953729A (en) * 2016-06-09 2016-09-21 佛山市勾股动力信息技术有限公司 Mobile image speed measuring instrument
CN108012051A (en) * 2017-11-02 2018-05-08 东莞市普密斯精密仪器有限公司 A kind of optical detection apparatus with multiple image collections
CN110221396A (en) * 2019-07-17 2019-09-10 深圳市沃特隆科技有限公司 A kind of novel telecentric lens structure

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