CN103212815A - Multispectral photoelectric focus finder - Google Patents
Multispectral photoelectric focus finder Download PDFInfo
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- CN103212815A CN103212815A CN2012100157579A CN201210015757A CN103212815A CN 103212815 A CN103212815 A CN 103212815A CN 2012100157579 A CN2012100157579 A CN 2012100157579A CN 201210015757 A CN201210015757 A CN 201210015757A CN 103212815 A CN103212815 A CN 103212815A
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- optical filter
- photoelectric sensor
- elevating bracket
- multispectral
- elevating
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- 230000003287 optical effect Effects 0.000 claims abstract description 39
- 230000003028 elevating effect Effects 0.000 claims description 70
- 230000005622 photoelectricity Effects 0.000 claims description 41
- 238000003698 laser cutting Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 description 26
- 238000000034 method Methods 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The invention relates to a multispectral photoelectric focus finder, which is mainly used for solving the problem that a focus position is difficult to find when laser cutting is put into production in the prior art. The invention adopts the technical scheme that the multispectral photoelectric focus finder comprises a photoelectric sensor, an optical filter gear turntable, a turntable drive motor, a drive gear, a lifting seat, a lifting seat drive motor, a lifting rod and a computer control system, wherein the upper and lower ends of the lifting seat are provided with grooves; the lifting seat drive motor is positioned in the groove at the lower end of the lifting seat and below the lifting rod; the photoelectric sensor is positioned in the central groove at the top of the lifting rod; when the photoelectric focus finder is started, the turntable drive motor drives the optical filter gear turntable to rotate through the drive gear; an optical filter automatically rotates to a position above the photoelectric sensor; rays pass through the optical filter and then fall on the photoelectric sensor; the sensor senses the light so as to give out a signal; and the signal is input into the computer control system. The problem is well solved, and the multispectral photoelectric focus finder can be applicable to the position detection of the working focus of a focus lens.
Description
Technical field
The present invention relates to a kind of detection means that is used for focus lamp job spotlight position, especially for determining of laser cutting device focus lamp job spotlight position.
Background technology
Laser cutting device is by focus lamp approximately parallel laser beam to be pooled a minimum high-energy point to carry out high-accuracy cutting production, general focal position cut quality the best during the 200um left and right sides below the cutting head light-emitting window, as shown in Figure 1, but owing in same lens barrel, needing to place the focus lamp of different focal because of the cutting demand, perhaps each lens barrel manufacturing tolerance is not quite similar, therefore the position of focus generally can be at ideal position, as shown in Figure 2, so just need move up and down and regulate the focal position focus lamp, be below cutting head, to draw near by perusal with steel disc in the past, the breakdown critical localisation of steel disc judges how many focus lamps moves up and down, complex operation, certain danger is arranged, and miss by a mile.
Chinese patent CN101169602 discloses a kind of focusing leveling measuring method and device, relates to the new method of the focusing and leveling sensor-based system that is applied to wafer in the projection lithography system, belongs to the optical measurement field.The present invention includes three parts: light source collimating module, focusing subsystem and leveling subsystem.Laser instrument of the present invention sends laser through the single-mode fiber collimation, after passing through the drift compensation device again, seeing through polarizing beam splitter and λ/4 wave plates incides on the tested silicon chip, make light repeatedly pass through tested silicon chip through plane mirror and right-angle reflecting prism, utilize set of lenses before position sensor, to amplify again, obtain silicon chip surface out of focus information.Utilize the plane optical splitter that light is returned along the road, see through lens and incide on the Position-Sensitive Detector, thereby obtain the two-dimentional inclination information of silicon chip surface.
Chinese patent CN1811519 discloses a kind of laser guiding focusing device for telescope, and it mainly connects pawl, right connection pawl, cross bar, montant and semiconductor laser etc. by a left side and forms.Described semiconductor laser is placed on the telescope ocular front end, the laser beam that the adjusting semiconductor laser sends passes telescope directive level crossing back reflection at a distance to scale, regulate hot spot again and become a fleck on scale, this has just realized telescope laser guide and focusing function.
Invention is that the multispectral photoelectricity of a kind of focus lamp job spotlight position is sought burnt device, and this part is placed under the cutting head, and opening program will be sought the focal position automatically.
Summary of the invention
Technical problem to be solved by this invention is the problem that the laser cutting device focus lamp job spotlight that exists in the prior art is difficult to seek, and the invention provides a kind of new multispectral photoelectricity and seeks burnt device, and this multispectral photoelectricity is sought burnt utensil to be had and seek burnt advantage easily.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of multispectral photoelectricity is sought burnt device, comprise photoelectric sensor, the optical filter gear turntable, the rotating disk drive motors, driven wheel, elevating bracket, the elevating bracket drive motors, elevating lever, computer control system, described elevating bracket has groove in two ends up and down, the elevating bracket drive motors is positioned at elevating bracket lower end inside grooves, below the elevating lever, elevating bracket drive motors upper end links to each other with the elevating lever bottom, elevating lever is arranged in the upper grooves of elevating bracket, photoelectric sensor is positioned at the center of top groove of elevating lever, when starting photoelectricity and seeking burnt device, described rotating disk drive motors drives the optical filter gear turntable by described driven wheel and rotates, optical filter rotates to the top of photoelectric sensor automatically, light drops on the photoelectric sensor by optical filter, sensor photosensitive sends signal, described signal input computer control system.
In the technique scheme, when laser is penetrated on photoelectric sensor, photoelectric sensor produces signal, and signal is imported described computer control system.
Multispectral photoelectricity of the present invention is sought the focus searching method of burnt device, comprises following several steps:
Regulating focus lamp at needs moves up and down when the focal position being occupy below the cutting head ideal position, photoelectricity is sought the below that burnt device is placed on cutting head, start photoelectricity and seek burnt device, lambda1-wavelength is set, photoelectricity is sought the top that burnt device will rotate to corresponding optical filter photoelectric sensor automatically, open the laser instrument bright dipping then, light drops on the photoelectric sensor by optical filter, sensor photosensitive sends signal, computer begins s operation control, become minimumly when some when lifting platform is raised to certain altitude and hot spot, control system stops elevating bracket work automatically, as Fig. 4.Measure the cutting head light-emitting window and seek burnt device upper surface distance apart from multispectral photoelectricity, cut about the ideal position that 200um is the focus lamp focus, according to cutting effect vernier focusing mirror position to satisfy the cutting demand.
In the technique scheme, described cutting constant L is relevant with the performance of laser cutting machine, and the numerical value of L is generally 200um.
The invention solves the difficult target-seeking problem in focal position when laser cutting was gone into operation in the past, simple to operate.Optical filter only allows a kind of light of wave band by dropping on the photoelectric sensor, and self-protection is strong, and has covered most of laser wavelengths; highly versatile, operating personnel needn't focus on process by visual laser, and are safe and reliable; improved debugging efficiency, simple to operate, obtained better technical effect.
Description of drawings
Fig. 1 is a laser cutting ideal operation view.
Fig. 2 is that focus is not at desirable position view.
Fig. 3 seeks burnt device schematic diagram for multispectral photoelectricity.
Fig. 4 seeks burnt device outside drawing for multispectral photoelectricity.
Fig. 5 seeks burnt device for photoelectricity and seeks burnt process schematic diagram.
Fig. 6 seeks burnt device for photoelectricity and seeks burnt process schematic diagram.
Among Fig. 1,1 is focus lamp; 2 for converging light; 3 is the cutting head light-emitting window; 4 is that band is cut steel plate.
Among Fig. 2,1 is focus lamp; 2 for converging light; 3 is the cutting head light-emitting window; 4 is that band is cut steel plate; 5 move down for focus.
Among Fig. 3,1 is photoelectric sensor; 2 is elevating lever; 3 is lifting motor; 4 driven tooth wheel discs for the band optical filter; 5 is driven wheel; 6 is the rotating disk drive motors; 7 is elevating bracket.
Among Fig. 4,1 is the ruddiness optical filter; 2 is the ruddiness optical filter; 3 is the green glow optical filter; 4 is blue filter; 5 is photoelectric sensor.
Among Fig. 5,1 is condenser; 2 for converging light; 3 seek burnt device for photoelectricity captures hot spot; 4 is photoelectric sensor; 5 is elevating bracket; 6 is optical filter; 7 is driven wheel.
Among Fig. 6,1 is condenser; 2 for converging light; 8 for being elevated to the focal position.
The invention will be further elaborated below by specific embodiment, but be not limited only to present embodiment.
Specific embodiment
[embodiment 1]
A kind of multispectral photoelectricity is sought burnt device, as shown in Figure 3, comprise photoelectric sensor, the optical filter gear turntable, the rotating disk drive motors, driven wheel, elevating bracket, the elevating bracket drive motors, elevating lever, computer control system, described elevating bracket has groove in two ends up and down, the elevating bracket drive motors is positioned at elevating bracket lower end inside grooves, below the elevating lever, elevating bracket drive motors upper end links to each other with the elevating lever bottom, elevating lever is arranged in the upper grooves of elevating bracket, photoelectric sensor is positioned at the center of top groove of elevating lever, when starting photoelectricity and seeking burnt device, described rotating disk drive motors drives the optical filter gear turntable by described driven wheel and rotates, optical filter rotates to the top of photoelectric sensor automatically, light drops on the photoelectric sensor by optical filter, sensor photosensitive sends signal, described signal input computer control system.
[embodiment 2]
It is an independently detection means that photoelectricity is sought burnt device, is made up of photoelectric sensor, optical filter gear turntable, automatic lifting seat, computer control system.Regulating focus lamp at needs moves up and down when the focal position being occupy below the cutting head ideal position, photoelectricity is sought the below that burnt device is placed on cutting head, start photoelectricity and seek burnt device, lambda1-wavelength is set, photoelectricity is sought the top that burnt device will rotate to corresponding optical filter photoelectric sensor automatically, open the laser instrument bright dipping then, light drops on the photoelectric sensor by optical filter, sensor photosensitive sends signal, computer begins s operation control, become minimum when some when lifting platform is raised to certain altitude and hot spot, control system stops elevating bracket work automatically, as shown in Figure 4, measures the cutting head light-emitting window and seeks burnt device upper surface distance apart from multispectral photoelectricity, cut about the ideal position that 200um is the focus lamp focus, according to cutting effect vernier focusing mirror position to satisfy the cutting demand.
[embodiment 3]
A kind of multispectral photoelectricity is sought burnt device, comprise photoelectric sensor, the optical filter gear turntable, the rotating disk drive motors, driven wheel, elevating bracket, the elevating bracket drive motors, elevating lever, computer control system, described elevating bracket has groove in two ends up and down, the elevating bracket drive motors is positioned at elevating bracket lower end inside grooves, below the elevating lever, elevating bracket drive motors upper end links to each other with the elevating lever bottom, elevating lever is arranged in the upper grooves of elevating bracket, photoelectric sensor is positioned at the center of top groove of elevating lever, when starting photoelectricity and seeking burnt device, described rotating disk drive motors drives the optical filter gear turntable by described driven wheel and rotates, optical filter rotates to the top of photoelectric sensor automatically, light drops on the photoelectric sensor by optical filter, sensor photosensitive sends signal, described signal input computer control system.
Regulating focus lamp at needs moves up and down when the focal position being occupy below the cutting head ideal position, photoelectricity is sought the below that burnt device is placed on cutting head, start photoelectricity and seek burnt device, lambda1-wavelength is set, photoelectricity is sought the top that burnt device will rotate to corresponding optical filter photoelectric sensor automatically, open the laser instrument bright dipping then, light drops on the photoelectric sensor by optical filter, sensor photosensitive sends signal, computer begins s operation control, become minimum when some when lifting platform is raised to certain altitude and hot spot, control system stops elevating bracket work automatically, measure the cutting head light-emitting window and seek burnt device upper surface distance apart from multispectral photoelectricity, cut about the ideal position that 200um is the focus lamp focus, according to cutting effect vernier focusing mirror position to satisfy the cutting demand.Photoelectricity is sought burnt process as shown in Figure 5 and Figure 6.
[embodiment 6]
A kind of multispectral photoelectricity is sought burnt device, comprise photoelectric sensor, the optical filter gear turntable, the rotating disk drive motors, driven wheel, elevating bracket, the elevating bracket drive motors, elevating lever, computer control system, described elevating bracket has groove in two ends up and down, the elevating bracket drive motors is positioned at elevating bracket lower end inside grooves, below the elevating lever, elevating bracket drive motors upper end links to each other with the elevating lever bottom, elevating lever is arranged in the upper grooves of elevating bracket, photoelectric sensor is positioned at the center of top groove of elevating lever, when starting photoelectricity and seeking burnt device, described rotating disk drive motors drives the optical filter gear turntable by described driven wheel and rotates, optical filter rotates to the top of photoelectric sensor automatically, light drops on the photoelectric sensor by optical filter, sensor photosensitive sends signal, described signal input computer control system.
Above-mentioned multispectral photoelectricity is sought the focus searching method of burnt device, comprises following several steps:
A) when needs adjusting focus lamp moves up and down, multispectral photoelectricity is sought the below that burnt device is placed on the laser cutting machine cutting head;
B) laser is left guiding light, starts multispectral photoelectricity and seeks burnt device, and the self-raising platform that multispectral photoelectricity is sought burnt device moves up, guide lights drops on the photoelectric sensor, sensor photosensitive sends signal, the signal input computer control system of photoelectric sensor, and computer begins s operation control;
C) be raised to certain altitude when lifting platform, hot spot becomes minimum when some again, and control system stops elevating bracket work automatically;
D) measure the cutting head light-emitting window and seek burnt device upper surface distance, cut cutting constant L again, be the position of focus lamp focus apart from multispectral photoelectricity.Wherein, L is 200um.
Claims (3)
1. a multispectral photoelectricity is sought burnt device, comprise photoelectric sensor, the optical filter gear turntable, the rotating disk drive motors, driven wheel, elevating bracket, the elevating bracket drive motors, elevating lever, computer control system, described elevating bracket has groove in two ends up and down, the elevating bracket drive motors is positioned at elevating bracket lower end inside grooves, below the elevating lever, elevating bracket drive motors upper end links to each other with the elevating lever bottom, elevating lever is arranged in the upper grooves of elevating bracket, photoelectric sensor is positioned at the center of top groove of elevating lever, when starting photoelectricity and seeking burnt device, described rotating disk drive motors drives the optical filter gear turntable by described driven wheel and rotates, optical filter rotates to the top of photoelectric sensor automatically, light drops on the photoelectric sensor by optical filter, sensor photosensitive sends signal, described signal input computer control system.
2. multispectral photoelectricity according to claim 1 is sought burnt device, it is characterized in that sensor photosensitive sends signal, and computer begins s operation control, becomes minimumly when some when lifting platform is raised to certain altitude and hot spot, and control system stops elevating bracket work automatically.
3. multispectral photoelectricity according to claim 1 is sought burnt device, it is characterized in that elevating lever can move up and down with respect to elevating bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015757.9A CN103212815B (en) | 2012-01-19 | 2012-01-19 | The burnt device of multispectral Photoelectric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015757.9A CN103212815B (en) | 2012-01-19 | 2012-01-19 | The burnt device of multispectral Photoelectric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103212815A true CN103212815A (en) | 2013-07-24 |
| CN103212815B CN103212815B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210015757.9A Active CN103212815B (en) | 2012-01-19 | 2012-01-19 | The burnt device of multispectral Photoelectric |
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| Country | Link |
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| CN (1) | CN103212815B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881527A (en) * | 2015-12-10 | 2017-06-23 | 彭翔 | The Intelligent Machining component of laser-processing system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09152540A (en) * | 1995-11-29 | 1997-06-10 | Fuji Photo Film Co Ltd | Image inputting lens device and method for correcting its focus position |
| US5774748A (en) * | 1995-07-07 | 1998-06-30 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens barrel and camera having such a barret |
| TW200639558A (en) * | 2005-05-06 | 2006-11-16 | Tong-Feng Chuang | An auto focusing device |
| CN1912669A (en) * | 2005-08-09 | 2007-02-14 | 明基电通股份有限公司 | Focusing test device and focusing platform capable of adjusting focal length of image sensing module |
| CN200993690Y (en) * | 2006-12-29 | 2007-12-19 | 武汉理工大学 | Vision sensor for measurement |
| CN201579555U (en) * | 2009-12-24 | 2010-09-15 | 石河子大学 | Welding camera indexing mechanism |
-
2012
- 2012-01-19 CN CN201210015757.9A patent/CN103212815B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5774748A (en) * | 1995-07-07 | 1998-06-30 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens barrel and camera having such a barret |
| JPH09152540A (en) * | 1995-11-29 | 1997-06-10 | Fuji Photo Film Co Ltd | Image inputting lens device and method for correcting its focus position |
| TW200639558A (en) * | 2005-05-06 | 2006-11-16 | Tong-Feng Chuang | An auto focusing device |
| CN1912669A (en) * | 2005-08-09 | 2007-02-14 | 明基电通股份有限公司 | Focusing test device and focusing platform capable of adjusting focal length of image sensing module |
| CN200993690Y (en) * | 2006-12-29 | 2007-12-19 | 武汉理工大学 | Vision sensor for measurement |
| CN201579555U (en) * | 2009-12-24 | 2010-09-15 | 石河子大学 | Welding camera indexing mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881527A (en) * | 2015-12-10 | 2017-06-23 | 彭翔 | The Intelligent Machining component of laser-processing system |
| CN106881527B (en) * | 2015-12-10 | 2020-07-03 | 彭翔 | Intelligent processing assembly of laser processing system |
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| Publication number | Publication date |
|---|---|
| CN103212815B (en) | 2016-02-24 |
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