CN204018961U - A kind of coaxial confocal light path realizes the device of field lens locating focal plane - Google Patents
A kind of coaxial confocal light path realizes the device of field lens locating focal plane Download PDFInfo
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- CN204018961U CN204018961U CN201420479569.6U CN201420479569U CN204018961U CN 204018961 U CN204018961 U CN 204018961U CN 201420479569 U CN201420479569 U CN 201420479569U CN 204018961 U CN204018961 U CN 204018961U
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Abstract
The utility model discloses the device that a kind of coaxial confocal light path realizes field lens locating focal plane, comprise field lens, semi-transparent semi-reflecting lens, electronic zoom camera lens, video camera and displacement platform; Semi-transparent semi-reflecting lens and imaging optical path optical axis are miter angle to be placed, and is embodied as 90 degree conversion of picture light path light axis, laser optical path optical axis and imaging optical path optical axis coincidence; The transmissive side of semi-transparent semi-reflecting lens is provided with described field lens, and the reflection side of semi-transparent semi-reflecting lens is provided with described electronic zoom camera lens; For placing the displacement platform of processing work, be arranged on laser optical path, video camera is fixedly connected with described electronic zoom camera lens; The focal plane of field lens and the imaging surface of video camera overlap.The utility model possesses the ability of imaging system and laser application system coaxial confocal, has the advantages that real time imagery is synchronizeed with laser scanning, and it is simple to operation can to realize quick location to field lens focal plane, has improved production efficiency.
Description
Technical field
The utility model belongs to laser application apparatus field, more specifically, relates to the device that a kind of coaxial confocal light path realizes field lens locating focal plane.
Background technology
Present stage, in laser application apparatus, the laser beam of minor diameter has higher energy density, can realize the application of industrial lasers.Conventionally the laser beam focusing device adopting is field lens, and field lens has definite focal plane position, in the certain limit of field lens focal plane position, is laser useful effect region, is called depth of focus.In laser processing procedure, along with the difference of processing thickness of detector, need to regulate the position of field lens or processing device, realized in the effective focal length of processing device mirror on the scene.Generally, the adjusting of field lens is relied on the manual measurement of traditional rule or adopts other range finding instruments.Manual measurement or other range finding instruments of tradition rule has length consuming time, precision is low and operate difficult feature.
Utility model content
Above defect or Improvement requirement for prior art, the utility model provides a kind of coaxial confocal light path to realize the device of field lens locating focal plane, its object is to improve field lens locating focal plane efficiency and precision, and the manual measurement that is intended to solve traditional rule causes length consuming time, precision is low and operate difficult technical problem.
The utility model provides a kind of coaxial confocal light path to realize the device of field lens locating focal plane, comprises field lens, semi-transparent semi-reflecting lens, electronic zoom camera lens, video camera and displacement platform; Described semi-transparent semi-reflecting lens and imaging optical path optical axis are miter angle to be placed, and is embodied as 90 degree conversion of picture light path light axis, laser optical path optical axis and imaging optical path optical axis coincidence; The transmissive side of described semi-transparent semi-reflecting lens is provided with described field lens, and the reflection side of described semi-transparent semi-reflecting lens is provided with described electronic zoom camera lens; For placing the displacement platform of processing work, be arranged on laser optical path, described video camera is fixedly connected with described electronic zoom camera lens; The focal plane of described field lens and the imaging surface of described video camera overlap.
Wherein, during work, processing work is placed on described displacement platform, and the laser that field lens sends acts on described processing work after described semi-transparent semi-reflecting lens transmission; The visible ray of described processing work reflection enters described electronic zoom camera lens after described semi-transparent semi-reflecting lens reflection, and arrives video camera imaging plane.
Wherein, described semi-transparent semi-reflecting lens is the two-sided high transmittance film of laser wavelength and the semi-transparent semi-reflecting lens that reflecting surface is coated with visible ray high-reflecting film of being coated with.
The utility model provides a kind of coaxial confocal light path to realize the device of field lens locating focal plane, it is characterized in that, comprises field lens, semi-transparent semi-reflecting lens, electronic zoom camera lens, video camera and displacement platform; Described semi-transparent semi-reflecting lens and imaging optical path optical axis are miter angle to be placed, and is embodied as 90 degree conversion of picture light path light axis, laser optical path optical axis and imaging optical path optical axis coincidence; The transmissive side of described semi-transparent semi-reflecting lens is provided with described electronic zoom camera lens, and the reflection side of described semi-transparent semi-reflecting lens is provided with described field lens; For placing the displacement platform of processing work, be arranged on laser optical path, described video camera is fixedly connected with described electronic zoom camera lens; The focal plane of described field lens and the imaging surface of described video camera overlap.
Wherein, during work, processing work is placed on described displacement platform, and the laser that field lens sends acts on described processing work after described semi-transparent semi-reflecting lens reflection; The visible ray of described processing work reflection enters described electronic zoom camera lens after described semi-transparent semi-reflecting lens transmission, and arrives described video camera imaging plane.
Wherein, described semi-transparent semi-reflecting lens is the two-sided high transmittance film of visible light wave range and the semi-transparent semi-reflecting lens that transmission plane is coated with laser wavelength high-reflecting film of being coated with.
The utility model possesses the ability of imaging system and laser application system coaxial confocal, has the advantages that real time imagery is synchronizeed with laser scanning, and it is simple to operation can to realize quick location to field lens focal plane, has improved production efficiency; Field lens locating focal plane efficiency and precision have been improved.
Accompanying drawing explanation
Fig. 1 is the side view of the utility model the first light path way of realization.
Fig. 2 is the side view of the utility model the second light path way of realization.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.In addition,, in each embodiment of described the utility model, involved technical characterictic just can not combine mutually as long as do not form each other conflict.
The utility model relates to a kind of to the quick pinpoint device in field lens focal plane in laser application apparatus, especially can realize the coaxial confocal of laser optical path and imaging optical path.Overcome the deficiency of existing field lens locating focal plane device, improve field lens locating focal plane efficiency and precision, the utility model provides a kind of coaxial confocal light path to realize field lens locating focal plane device, this device can not only accurately carry out field lens locating focal plane fast, and the situation of laser to the scanning of processing device can be provided in real time.
The utility model, from the angle that realizes of light path, has two kinds of implementations:
The first as shown in Figure 1, comprises field lens 1, semi-transparent semi-reflecting lens 2, electronic zoom camera lens 3, video camera 4, processing work 5, displacement platform 6; Semi-transparent semi-reflecting lens 2 is miter angle with imaging optical path optical axis to be placed, and is embodied as 90 degree conversion of picture light path light axis, laser optical path optical axis and imaging optical path optical axis coincidence; Semi-transparent semi-reflecting lens 2) transmissive side is provided with field lens 1, and the reflection side of semi-transparent semi-reflecting lens 2 is provided with described electronic zoom camera lens 3; For placing the displacement platform of processing work 5, arrange 6 at laser optical path, video camera 4 is fixedly connected with electronic zoom camera lens 3; The imaging surface of the focal plane of field lens 1 and video camera 4 overlaps.Laser is sent by field lens 1, through semi-transparent semi-reflecting lens 2 transmissions, acts on processing work 5, with solid line, represents; The visible ray of workpiece reflection is sent by processing work 5, through semi-transparent semi-reflecting lens 2 reflections, enters electronic zoom camera lens 3, arrives video camera 4 imaging planes, is represented by dotted lines.
In the utility model, the semi-transparent semi-reflecting lens 2 of employing can be realized the high-transmission rate of laser and the high reflectance of visible ray (comprising 390nm to 780nm wave band).Semi-transparent semi-reflecting lens 2 is miter angle placement with imaging optical path optical axis, is embodied as 90 degree conversion of picture light path light axis, with laser optical path optical axis coincidence, realizes coaxially, and its transmission one side is field lens, and reflection one side is motorized zoom lens.Laser is sent by field lens, through semi-transparent semi-reflecting lens transmission, acts on processing work; The visible ray of workpiece reflection is sent by processing work, through semi-transparent semi-reflecting lens reflection, enters electronic zoom camera lens, arrives video camera imaging plane.
The second as shown in Figure 2, comprises field lens 1, semi-transparent semi-reflecting lens 2, electronic zoom camera lens 3, video camera 4 and displacement platform 6; Semi-transparent semi-reflecting lens 2 is miter angle with imaging optical path optical axis to be placed, and is embodied as 90 degree conversion of picture light path light axis, laser optical path optical axis and imaging optical path optical axis coincidence; The transmissive side of semi-transparent semi-reflecting lens 2 is provided with described electronic zoom camera lens 3, and the reflection side of semi-transparent semi-reflecting lens 2 is provided with field lens 1; For placing the displacement platform 6 of processing work 5, be arranged on laser optical path, video camera 4 is fixedly connected with electronic zoom camera lens 3; The imaging surface of the focal plane of field lens 1 and video camera 4 overlaps.Laser is sent by field lens 1, through semi-transparent semi-reflecting lens 2 reflections, acts on processing work 5, with solid line, represents; The visible ray of workpiece reflection is sent by processing work 5, through semi-transparent semi-reflecting lens 2 transmissions, enters electronic zoom camera lens 3, arrives video camera 4 imaging planes, is represented by dotted lines.
In the utility model, the semi-transparent semi-reflecting lens 2 of employing can be realized the high reflectance of laser and the high-transmission rate of visible ray, compare with the first, and semi-transparent semi-reflecting lens invariant position, the position of field lens and the position of imaging moiety exchange.Realize 90 degree conversion of laser optical path optical axis, with imaging optical path optical axis coincidence, realize coaxially, its transmission one side is electronic zoom camera lens, and reflection one side is field lens.Laser is sent by field lens, through semi-transparent semi-reflecting lens reflection, acts on processing work; The visible ray of workpiece reflection is sent by processing work, through semi-transparent semi-reflecting lens transmission, enters electronic zoom camera lens, arrives video camera imaging plane.
The device using in the utility model, semi-transparent semi-reflecting lens adopts the level crossing of two-sided plating optical thin film, and the semi-transparent semi-reflecting lens in the first light path way of realization needs the high transmittance film of two-sided plating laser wavelength and simultaneously plates visible ray high-reflecting film over against video camera; Semi-transparent semi-reflecting lens in the second light path way of realization needs the high transmittance film of two-sided plating visible light wave range and simultaneously plates laser wavelength high-reflecting film over against video camera.According to the requirement of working space, choose the field lens of suitable focal length and the electronic zoom camera lens of suitable operating distance again, by the position of mobile field lens or electronic zoom camera lens, proofread and correct the coincidence of field lens focal plane and electronic zoom camera lens focal plane, realize confocal.After confocal correction, the readability by imaging moiety imaging effect determines whether that being positioned at electronic zoom camera lens focal plane locates, thereby judge workpiece, whether is positioned at place, field lens focal plane.The criterion of readability is: in displacement platform moving process, when image resolution ratio is maximum, distinguishable object details ability is the highest.
The beneficial effects of the utility model are, can realize by the mode of video Real-Time Monitoring the quick and precisely location of field lens focal plane, and process visualization is simple to operate again.Show fast: by the mode of video Real-Time Monitoring, control the lifting of electricity driving displacement platform, and without adopting traditional rule to go repeatedly to adjust the distance and measure.Conventionally the traditional approach used time at tens seconds to several minutes not etc., and adopts new regulative mode, in ten seconds, can complete adjusting.Accurately show, the unit of traditional rule is generally 1 millimeter, and is difficult to guarantee that the length of measuring is the distance in vertical direction, and error is larger; By this device, in the situation of powerful visual field, the depth of field is 0.1 grade, and error can not surpass the depth of field of twice.
When the coaxial confocal light path that the utility model provides realizes the device work of field lens locating focal plane, can operate in accordance with the following steps:
(1) by the reflex of semi-transparent semi-reflecting lens 2, by the optical axis coincidence of field lens 1 and electronic zoom camera lens 3, realize the coaxial of field lens 1 and electronic zoom camera lens 3;
(2) regulate the locus of field lens 1 or electronic zoom camera lens 3, the focal plane of field lens 1 focal plane and electronic zoom camera lens 3 is overlapped, realize the confocal of field lens 1 and electronic zoom camera lens 3;
(3) on displacement platform 6, place processing work 5, displacement platform 6 is declined, while seeing video camera 4 imaging clearly, judge that processing work 5 is positioned on the focal plane of field lens 1, can realize Laser Processing;
(4), when processing work 5 changes, different according to the thickness of former and later two workpiece, the lifting of judgement displacement platform 6, if workpiece thickening regulates displacement platform 6 to decline, if workpiece attenuation regulates displacement platform 6 to rise;
(5), while seeing video camera 4 imaging clearly, judge that processing work 5 is positioned on the focal plane of field lens 1, can realize Laser Processing.
In the utility model, can realize by the anti-visible light microscopic of saturating infrared light the coincidence of laser beam axis and visible ray optical axis, regulate camera position to reach the coincidence of field lens focal plane and imaging plane, and then rely on the definition of workpiece image to realize accurate location fast, field lens focal plane.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (6)
1. coaxial confocal light path realizes a device for field lens locating focal plane, it is characterized in that, comprises field lens (1), semi-transparent semi-reflecting lens (2), electronic zoom camera lens (3), video camera (4) and displacement platform (6);
Described semi-transparent semi-reflecting lens (2) is miter angle with imaging optical path optical axis to be placed, and is embodied as 90 degree conversion of picture light path light axis, laser optical path optical axis and imaging optical path optical axis coincidence; The transmissive side of described semi-transparent semi-reflecting lens (2) is provided with described field lens (1), and the reflection side of described semi-transparent semi-reflecting lens (2) is provided with described electronic zoom camera lens (3);
The displacement platform (6) that is used for placing processing work (5) is arranged on laser optical path, and described video camera (4) is fixedly connected with described electronic zoom camera lens (3); The imaging surface of the focal plane of described field lens (1) and described video camera (4) overlaps.
2. device as claimed in claim 1, it is characterized in that, during work, it is upper that processing work (5) is placed on described displacement platform (6), and the laser that field lens (1) sends acts on described processing work (5) after described semi-transparent semi-reflecting lens (2) transmission; The visible ray of described processing work (5) reflection enters described electronic zoom camera lens (3) after described semi-transparent semi-reflecting lens (2) reflection, and arrives video camera (4) imaging plane.
3. device as claimed in claim 1 or 2, is characterized in that, described semi-transparent semi-reflecting lens (2) is the two-sided high transmittance film of laser wavelength and the semi-transparent semi-reflecting lens that reflecting surface is coated with visible ray high-reflecting film of being coated with.
4. coaxial confocal light path realizes a device for field lens locating focal plane, it is characterized in that, comprises field lens (1), semi-transparent semi-reflecting lens (2), electronic zoom camera lens (3), video camera (4) and displacement platform (6);
Described semi-transparent semi-reflecting lens (2) is miter angle with imaging optical path optical axis to be placed, and is embodied as 90 degree conversion of picture light path light axis, laser optical path optical axis and imaging optical path optical axis coincidence; The transmissive side of described semi-transparent semi-reflecting lens (2) is provided with described electronic zoom camera lens (3), and the reflection side of described semi-transparent semi-reflecting lens (2) is provided with described field lens (1);
The displacement platform (6) that is used for placing processing work (5) is arranged on laser optical path, and described video camera (4) is fixedly connected with described electronic zoom camera lens (3); The imaging surface of the focal plane of described field lens (1) and described video camera (4) overlaps.
5. device as claimed in claim 4, it is characterized in that, during work, it is upper that processing work (5) is placed on described displacement platform (6), and the laser that field lens (1) sends acts on described processing work (5) after described semi-transparent semi-reflecting lens (2) reflection; The visible ray of described processing work (5) reflection enters described electronic zoom camera lens (3) after described semi-transparent semi-reflecting lens (2) transmission, and arrives described video camera (4) imaging plane.
6. device as claimed in claim 4, is characterized in that, described semi-transparent semi-reflecting lens (2) is the two-sided high transmittance film of visible light wave range and the semi-transparent semi-reflecting lens that transmission plane is coated with laser wavelength high-reflecting film of being coated with.
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| CN201420479569.6U CN204018961U (en) | 2014-08-22 | 2014-08-22 | A kind of coaxial confocal light path realizes the device of field lens locating focal plane |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769883A (en) * | 2016-12-29 | 2017-05-31 | 同济大学 | A kind of Schwarzschild focal plane of lens positioner and localization method |
| CN109530912A (en) * | 2018-12-28 | 2019-03-29 | 武汉华工激光工程有限责任公司 | Based on interior coaxial focusing mechanism and based on interior coaxial focusing method |
| CN110560890A (en) * | 2019-09-06 | 2019-12-13 | 廊坊西波尔钻石技术有限公司 | Imaging system of laser processing head and laser processing equipment with same |
| CN111716017A (en) * | 2020-06-16 | 2020-09-29 | 罗建华 | Visual detection device and laser processing system |
| CN111766690A (en) * | 2020-07-24 | 2020-10-13 | 苏州天准科技股份有限公司 | Alignment imaging equipment and laser direct imaging system |
| CN112719606A (en) * | 2020-12-10 | 2021-04-30 | 苏州铁人光学技术有限公司 | Layered processing technology of laser equipment |
| CN112743238A (en) * | 2020-12-10 | 2021-05-04 | 苏州铁人光学技术有限公司 | Technological method of texture embossing imprinter |
| CN113539059A (en) * | 2020-04-20 | 2021-10-22 | 华为技术有限公司 | Display screen and electronic equipment |
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2014
- 2014-08-22 CN CN201420479569.6U patent/CN204018961U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769883A (en) * | 2016-12-29 | 2017-05-31 | 同济大学 | A kind of Schwarzschild focal plane of lens positioner and localization method |
| CN106769883B (en) * | 2016-12-29 | 2019-06-11 | 同济大学 | A kind of Schwarzschild focal plane of lens positioning device and localization method |
| CN109530912A (en) * | 2018-12-28 | 2019-03-29 | 武汉华工激光工程有限责任公司 | Based on interior coaxial focusing mechanism and based on interior coaxial focusing method |
| CN109530912B (en) * | 2018-12-28 | 2021-02-09 | 武汉华工激光工程有限责任公司 | Focusing device based on inner coaxiality and focusing method based on inner coaxiality |
| CN110560890A (en) * | 2019-09-06 | 2019-12-13 | 廊坊西波尔钻石技术有限公司 | Imaging system of laser processing head and laser processing equipment with same |
| CN113539059A (en) * | 2020-04-20 | 2021-10-22 | 华为技术有限公司 | Display screen and electronic equipment |
| CN111716017A (en) * | 2020-06-16 | 2020-09-29 | 罗建华 | Visual detection device and laser processing system |
| CN111766690A (en) * | 2020-07-24 | 2020-10-13 | 苏州天准科技股份有限公司 | Alignment imaging equipment and laser direct imaging system |
| CN112719606A (en) * | 2020-12-10 | 2021-04-30 | 苏州铁人光学技术有限公司 | Layered processing technology of laser equipment |
| CN112743238A (en) * | 2020-12-10 | 2021-05-04 | 苏州铁人光学技术有限公司 | Technological method of texture embossing imprinter |
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