CN204373598U - A kind of polarization adjustable digital formula photoelectric auto-collimator - Google Patents
A kind of polarization adjustable digital formula photoelectric auto-collimator Download PDFInfo
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- CN204373598U CN204373598U CN201420775728.7U CN201420775728U CN204373598U CN 204373598 U CN204373598 U CN 204373598U CN 201420775728 U CN201420775728 U CN 201420775728U CN 204373598 U CN204373598 U CN 204373598U
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Abstract
The utility model relates to field of optical measurements, particularly relate to a kind of collimator, a kind of polarization adjustable digital of concrete finger formula photoelectric auto-collimator, comprise light source, graticule, adjustable plus lens group, Amici prism, quarter wave plate, primary mirror of looking in the distance, adjustable secondary mirror group and PSD detector, the utility model adopts polarization splitting prism to coordinate quarter wave plate, improves the utilization ratio of optical energy of system; The adjustable secondary mirror group of primary mirror of looking in the distance adopted, can realize the continuously adjustabe that can realize focal length in test specification, add the dirigibility of measuring distance; In addition this polarization adjustable digital formula photoelectric auto-collimator additionally uses the longitudinally height that plus lens group shortens collimator, and adjustable secondary mirror lens combination, the measuring distance of expansion collimator; The advantages such as it is low that the utility model has cost, compact conformation, and detection range is far away, and detection accuracy is high, can be widely used in the alignment measurement of daily life, commercial production, Aero-Space, boats and ships and military industry field.
Description
Technical field
The utility model relates to photodetection field, especially relates to autocollimatic instrument field.
Background technology
Autocollimator utilizes optical autocollimating principle, realizes the fine measuring instrument of small angle measurement.Because it is easy to use and have higher accuracy of detection, be widely used in the industry that the precision such as Aero-Space, boats and ships, military project are high, the test of such as, in the quality assurance (flatness, flatness, verticality, the depth of parallelism etc.) of Mechanical Processing Industry, measurement verification industry angle measurement standard, prism angle location and monitoring, optical element and installation accuracy control etc., its range of application is wide.Autocollimator experienced by visual type, photoelectricity nulling formula and digital display type three developing stage.
Raising resolving power and stability of display are the developing direction of universal digital display autocollimator.
High resolution is guarantee and the prerequisite of pin-point accuracy, and high stability is again guarantee and the prerequisite of high resolution.Rising space amount is feature and the difficult point of static digital display autocollimator.Kinetic measurement is sampled at every turn and is only had a numerical value to export, and can not react beating of indicating value, its difficult point is dynamic responding speed and dynamic accuracy, but all purpose instrument will read the stable reading value of each position, rising space just can only be estimated greatly and reads, and affects the accuracy of indicating value, also affects resolving power.
The appearance of digital display type autocollimator makes the performance of autocollimator have qualitative leap, and digital display type is instrument accuracy grade by 1 " level is increased to 0.1 " level, and minimum displayed value is by 0.1 " level is increased to 0.01 " level.The accuracy of digital display type autocollimator is high, easy to use, simple to operate, can realize automatically measuring.
The photoelectric auto-collimator produced both at home and abroad is at present mainly by human eye reading, for static test, response frequency is not high, the needs measured at a high speed cannot be met, in addition when current autocollimator is general repeatedly through the semi-transparent semi-reflecting effect of Amici prism, finally can project the luminous energy of pick-up unit, lose very large, can up to 80%, light energy losses large like this, proposes requirements at the higher level to the luminous sensitivity of pick-up unit.
Utility model content
In view of the foregoing, the utility model provides a kind of polarization adjustable digital formula photoelectric auto-collimator, polaroid is added on existing photoelectric collimator basis, adds the utilization factor of system luminous energy, improve sensitivity and the reliability of measurement.
In order to realize above-mentioned target, the utility model takes following technical scheme: a kind of polarization adjustable digital formula photoelectric auto-collimator, comprises light source, graticule, plus lens group, Amici prism, quarter wave plate, primary mirror of looking in the distance, adjustable secondary mirror group and PSD detector, wherein, after light source is opened, the light sent illuminates graticule, after differentiation plate, ray cast is to light source plus lens group, after the convergence effect of plus lens group, incide on Amici prism, through quarter wave plate after the reflection of Amici prism light splitting surface, incide and look in the distance on primary mirror, project on target reflecting surface after the collimating effect of primary mirror, again project on Amici prism after primary mirror of looking in the distance after the reflection of target reflecting surface, through inciding in adjustable secondary mirror group after Amici prism and quarter wave plate, project in PSD detector after the convergence of adjustable secondary mirror group.
Further, described Amici prism is polarization splitting prism, and through the P component waves of polarization splitting prism by whole transmission, and S component waves can all be reflected with 45° angle.
The light that this polarization adjustable digital formula photoelectric auto-collimator light source sends is after polarization splitting prism, and its S wave component is all reflected, after quarter wave plate, its phase delay 90 °, target reflecting surface is projected after the collimating effect of primary mirror of looking in the distance, and after the reflection of target reflecting surface, again through looking in the distance primary mirror, through quarter wave plate after convergence, its phase place postpones 90 ° again, becomes P ripple, completely through after Amici prism, through adjustable secondary mirror group, finally incide in PSD detector; Due to the mating reaction of polarization splitting prism and 1/4 ripple, the utilization factor of luminous energy is improved greatly, and then improves the Effect on Detecting of whole autocollimator.
Further, this polarization adjustable digital formula photoelectric auto-collimator, plus lens group is adopted in source ends, described plus lens group comprises the first plus lens and the second plus lens, described first plus lens is near graticule one end, described second plus lens is near described Amici prism end, after pattern on the bright graticule of the illumination that light source sends, above-mentioned pattern projection is to the first plus lens, project after twice convergence of the first and second plus lens on the light splitting surface of Amici prism, the benefit done like this is, when light source is diverging light, pattern can converge to more among a small circle by the convergence effect of twice in shorter distance, better concentrate light signal, be convenient to observation thereafter or detection, shorten the transmission range between light signal that light source sends to Amici prism, direct benefit makes longitudinally highly reducing of autocollimatic instrument, structure is compacter, more be convenient to carrying of installation.
This polarization adjustable digital formula photoelectric auto-collimator adopts PSD detector, and the position quantity information of the light signal detected is analog output, faster system response, and resolution is high, and cost is low, therefore has the value of widespread use.Can modulate echo signal simultaneously, thus the antijamming capability of system can be significantly improved, can be used for realizing high speed, high precision, position detecting system that antijamming capability is strong, compared to ccd detector, the utility model adopts the detection sensitivity of PSD detector higher, the high measurement realizing high more precision.Price is also more cheap simultaneously.
Further, described light source adopts LED light source, compared to conventional light source, LED has, and cost is low, high-level efficiency, low energy consumption, high brightness, environmental protection, a series of remarkable advantage such as extra long life, simultaneously due to LED light source send light there is very high polarizability, can be reduced to minimum by the system light energy losses of LED light source.This kind of polarization adjustable digital formula photoelectric auto-collimator adopts LED to be light source, reduces production cost, and light source luminescent intensity is also guaranteed simultaneously.
Further, described in primary mirror of looking in the distance be balsaming lens group, compared to ordinary lens, balsaming lens group has better spotlight effect.
Further, described secondary mirror is adjustable lens group, can realize the function of continuous vari-focus, and described adjustable lens group comprises the first lens and the second lens, and described first lens are near Amici prism side, and described second lens are near PSD detector one end.The continuously adjustabe of focal length can be realized in test specification, extend the distance of test like this, can realize measuring more at a distance, too increase the dirigibility of test simultaneously.
Preferred as one, described graticule is " cross " graticule.
Preferred as one, described graticule is " I-shaped " graticule.
The utility model has following beneficial effect: this polarization adjustable digital formula photoelectric auto-collimator, adopts polarization splitting prism and quarter wave plate to coordinate, improves the utilization ratio of optical energy of system, improve the detection performance of system; The adjustable secondary mirror group of primary mirror of looking in the distance adopted can realize the continuously adjustabe that can realize focal length in test specification, adds the dirigibility of measuring distance; In addition this polarization adjustable digital formula photoelectric auto-collimator additionally uses the longitudinally height that plus lens group shortens collimator, adopts secondary mirror adjustable lens group of looking in the distance, the measuring distance of expansion collimator; The advantages such as to have cost low for this polarization adjustable digital formula photoelectric auto-collimator in a word, compact conformation, and detection range is far away, and detection accuracy is high, can be widely used in the alignment measurement of daily life, commercial production, Aero-Space, boats and ships and military industry field.
Accompanying drawing explanation
Fig. 1 is the principle assumption diagram of this polarization adjustable digital formula photoelectric auto-collimator.
Fig. 2 is the light path principle schematic diagram of this polarization adjustable digital formula photoelectric auto-collimator.
Embodiment
The utility model is described in detail below in conjunction with the drawings and specific embodiments.
The utility model takes following technical scheme: a kind of polarization adjustable digital formula photoelectric auto-collimator, as shown in Figure 1, light source 1, graticule 2, plus lens group 3, Amici prism 4, quarter wave plate 9, primary mirror 5 of looking in the distance, target reflecting surface 6, adjustable secondary mirror group 7 and PSD detector 8 is comprised;
After light source 1 is opened, the light sent illuminates graticule 2, after differentiation plate 2, ray cast is to plus lens group 3, after the convergence effect of plus lens group 3, incide on Amici prism 4, after the reflection of Amici prism 4 light splitting surface, through quarter wave plate 9, incide and look in the distance on primary mirror 5, project after the collimating effect of primary mirror 5 of looking in the distance on target reflecting surface 6, again through looking in the distance primary mirror 5 after the reflection of target reflecting surface 6, thereafter again through quarter wave plate 9, project on Amici prism 4, incide in adjustable secondary mirror group 7 after Amici prism 4, project after the convergence of adjustable secondary mirror group 7 in PSD detector 8 (light path principle as shown in Figure 2).
Further, described Amici prism 4 is polarization splitting prism, and through the P component waves of polarization splitting prism by whole transmission, and S component waves can all be reflected with 45° angle.
The light that this polarization adjustable digital formula photoelectric auto-collimator light source sends is after polarization splitting prism, its S wave component is all reflected, after quarter wave plate 9, its phase delay 90 °, target reflecting surface is projected after the collimating effect of primary mirror 5 of looking in the distance, and after the reflection of target reflecting surface 6, again through looking in the distance primary mirror 5, through quarter wave plate 9 after convergence, its phase place postpones 90 ° again, becomes P ripple, completely through after Amici prism 4, through adjustable secondary mirror group 7, finally incide in PSD detector 8; Due to the mating reaction of polarization splitting prism and 1/4 ripple 9, the utilization factor of luminous energy is improved greatly, and then improves the Effect on Detecting of whole autocollimator.
As shown in Figure 1, this polarization adjustable digital formula photoelectric auto-collimator, plus lens group 3 is adopted in source ends, described plus lens group comprises the first plus lens 3-1 and the second plus lens 3-2, described first plus lens 3-1 is near graticule 2 one end, described second plus lens is by nearly described Amici prism 4 end of 3-2, after pattern on the bright graticule 2 of the illumination that light source 1 sends, above-mentioned pattern projection is to the first plus lens 3-1, project after twice convergence of the first and second plus lens 3-2 on the light splitting surface of Amici prism 4, the benefit done like this is, when light source is diverging light, pattern can converge to more among a small circle by the convergence effect of twice in shorter distance, better concentrate the energy of light signal, be convenient to observation or the detection in its face, shorten the transmission range between light signal that light source sends to Amici prism, make longitudinally highly reducing of autocollimatic instrument, structure is compacter, more be convenient to carrying of installation.
The utility model adopts PSD detector 8, and the position quantity information of the light signal detected is analog output, faster system response, and resolution is high, and cost is low, therefore has the value of widespread use.Can modulate echo signal simultaneously, thus the antijamming capability of system can be significantly improved, can be used for realizing high speed, high precision, position detecting system that antijamming capability is strong, compared to ccd detector, the utility model adopts the detection sensitivity of PSD detector higher, the high measurement realizing high more precision.Price is also more cheap simultaneously.
Further, described light source adopts LED light source, and compared to conventional light source, LED has, cost is low, high-level efficiency, low energy consumption, high brightness, environmental protection, a series of remarkable advantage such as extra long life, this a kind of polarization adjustable digital formula photoelectric auto-collimator adopts LED to be light source, reduces production cost, and light source luminescent intensity is also guaranteed simultaneously.
Further, described in primary mirror of looking in the distance be balsaming lens group, compared to ordinary lens, balsaming lens group has better spotlight effect.
Further, described secondary mirror is adjustable lens group, and as shown in Figure 1, described adjustable lens group 7 comprises the first lens 7-1 and the second lens 7-2, and described first lens are near Amici prism 4 side, and described second lens are near PSD detector 8 one end.The work function of continuous vari-focus can be realized, the continuously adjustabe of focal length can be realized in test specification, extend the distance of test like this, can realize measuring more at a distance, too increase the dirigibility of test simultaneously.
Preferred as one, described graticule is " cross " graticule.
Preferred as one, described graticule is " I-shaped " graticule.
This polarization adjustable digital formula photoelectric auto-collimator, adopts polarization splitting prism and quarter wave plate to coordinate, improves the utilization ratio of optical energy of system, improve the detection performance of system; The adjustable secondary mirror group of primary mirror of looking in the distance adopted can realize the continuously adjustabe that can realize focal length in test specification, adds the dirigibility of measuring distance; In addition this polarization adjustable digital formula photoelectric auto-collimator additionally uses the longitudinally height that plus lens group shortens collimator, adopts secondary mirror adjustable lens group of looking in the distance, the measuring distance of expansion collimator; The advantages such as to have cost low for this polarization adjustable digital formula photoelectric auto-collimator in a word, compact conformation, and detection range is far away, and detection accuracy is high, can be widely used in the alignment measurement of daily life, commercial production, Aero-Space, boats and ships and military industry field.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a polarization adjustable digital formula photoelectric auto-collimator, is characterized in that, comprises light source, graticule, plus lens group, Amici prism, quarter wave plate, primary mirror of looking in the distance, adjustable secondary mirror group and PSD detector;
Described Amici prism is polarization splitting prism;
After light source is opened, the light sent illuminates graticule; Ray cast after differentiation plate is to plus lens group; After the convergence of plus lens group, incide on Amici prism;
Through quarter wave plate after the reflection of Amici prism light splitting surface, incide and look in the distance on primary mirror, project on target reflecting surface after the collimating effect of primary mirror of looking in the distance;
After the reflection of target reflecting surface, again through looking in the distance primary mirror, converging laggard quarter wave plate excessively, inciding in adjustable secondary mirror group through Amici prism; Finally project in PSD detector.
2. a kind of polarization adjustable digital formula photoelectric auto-collimator as claimed in claim 1, it is characterized in that described plus lens group comprises the first plus lens and the second plus lens, described first plus lens is near graticule one end, and described second plus lens is near Amici prism one end.
3. a kind of polarization adjustable digital formula photoelectric auto-collimator as claimed in claim 2, is characterized in that, described light source adopts LED light source.
4. a kind of polarization adjustable digital formula photoelectric auto-collimator as claimed in claim 3, is characterized in that, described in primary mirror of looking in the distance be balsaming lens group.
5. a kind of polarization adjustable digital formula photoelectric auto-collimator as claimed in claim 4, it is characterized in that, described adjustable secondary mirror group is adjustable lens group.
6. a kind of polarization adjustable digital formula photoelectric auto-collimator as claimed in claim 5, it is characterized in that, described adjustable lens group comprises the first lens and the second lens, and described first lens are near Amici prism side, and described second lens are near PSD detector one end.
7. a kind of polarization adjustable digital formula photoelectric auto-collimator as described in one of claim 1 to 6, it is characterized in that, described graticule is cross-graduation plate.
8. a kind of polarization adjustable digital formula photoelectric auto-collimator as described in one of claim 1 to 6, it is characterized in that, described graticule is I-shaped graticule.
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| CN201420775728.7U CN204373598U (en) | 2014-12-11 | 2014-12-11 | A kind of polarization adjustable digital formula photoelectric auto-collimator |
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| CN201420775728.7U CN204373598U (en) | 2014-12-11 | 2014-12-11 | A kind of polarization adjustable digital formula photoelectric auto-collimator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668527A (en) * | 2019-03-01 | 2019-04-23 | 珠海博明视觉科技有限公司 | A kind of adjustable optical-autocollimator |
| CN110174775A (en) * | 2019-05-06 | 2019-08-27 | 武汉优光科技有限责任公司 | A kind of corner adjustable optic fibre colimated light system |
| CN114545644A (en) * | 2022-02-22 | 2022-05-27 | 湖北优光科学仪器有限公司 | High-precision corner-adjustable optical fiber collimation system |
-
2014
- 2014-12-11 CN CN201420775728.7U patent/CN204373598U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668527A (en) * | 2019-03-01 | 2019-04-23 | 珠海博明视觉科技有限公司 | A kind of adjustable optical-autocollimator |
| CN109668527B (en) * | 2019-03-01 | 2024-02-13 | 珠海博明视觉科技有限公司 | Adjustable optical auto-collimator |
| CN110174775A (en) * | 2019-05-06 | 2019-08-27 | 武汉优光科技有限责任公司 | A kind of corner adjustable optic fibre colimated light system |
| CN110174775B (en) * | 2019-05-06 | 2022-02-08 | 武汉优光科技有限责任公司 | Adjustable optical fiber collimation system of corner |
| CN114545644A (en) * | 2022-02-22 | 2022-05-27 | 湖北优光科学仪器有限公司 | High-precision corner-adjustable optical fiber collimation system |
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Granted publication date: 20150603 |