CN103528610A - Reflective photoelectric sensing device - Google Patents
Reflective photoelectric sensing device Download PDFInfo
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- CN103528610A CN103528610A CN201310520990.7A CN201310520990A CN103528610A CN 103528610 A CN103528610 A CN 103528610A CN 201310520990 A CN201310520990 A CN 201310520990A CN 103528610 A CN103528610 A CN 103528610A
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- mirror surface
- photoelectric sensing
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Abstract
The invention discloses a reflective photoelectric sensing device which comprises a light source, a reflection mirror surface and a light detector, wherein a small light-transmitting hole is formed in the middle of the reflection mirror surface; the light source obliquely projects a light beam to the reflection mirror surface, and the light beam is projected to an irradiated object through the middle small light-transmitting hole; and the light detector is located on one side of the reflection mirror surface. With the adoption of the scheme, the provided reflective photoelectric sensing device enlarges the collecting range of reflected light of the irradiated object and reduces the sensitivity of a sensor output signal to the distance of the irradiated object by using the working principle of the reflection mirror surface, attenuation of the reflection mirror surface comprising the small hole to excitation light and reflected light is small, the reflective photoelectric sensing device can be applied to a printer or the field of fluorescence excitation and collection, and the work stability and the efficiency of equipment can be improved greatly.
Description
Technical field
The present invention relates to photoelectricity positioning field, particularly relate to a kind of reflection-type photoelectric sensing apparatus.
Background technology
Reflection-type photoelectric sensing apparatus is widely used in printer and other association areas, and being specifically applied in need to exciting or gathering the pinpoint occasion of shone thing transverse movement or fluorescent object.If the light source of irradiating object is not laser, conventionally between light source and shone thing, place a unthreaded hole (such as small sircle hole or fine rule hole), can make like this sensor output amplitude along with variation more sharply occurs the change in location of shone thing, thereby can determine more accurately the position of shone thing.
The design shortcoming of existing reflection-type photoelectric sensing apparatus is that sensor output is more responsive to the distance between sensor and shone thing, thereby causes providing in some cases weak signal output or wrong judgement, and performance is stable not.And fluorescent object excite or gatherer process in, the spectroscope that general reflection-type photoelectric sensing apparatus adopts to the decay of exciting light and fluorescence up to 50%, inefficiency.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of reflection-type photoelectric sensing apparatus, reduce the susceptibility of sensor output to distance between sensor and shone thing, reduce device to exciting light or catoptrical decay, lifting gear stability and work efficiency.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of reflection-type photoelectric sensing apparatus is provided, comprise: light source, mirror surface and photo-detector, in the middle of described mirror surface, there is a printing opacity aperture, described light source tilts to invest mirror surface by light beam, light beam projects shone thing by middle printing opacity aperture, and described photo-detector is positioned at a side of mirror surface.
In a preferred embodiment of the present invention, described light source is that LED lamp, optical fiber import light source or generating laser.
In a preferred embodiment of the present invention, the perforate of the printing opacity aperture on described mirror surface is less than 5mm.
In a preferred embodiment of the present invention, described photo-detector is towards mirror surface, and mirror surface and photo-detector shape at a certain angle.
In a preferred embodiment of the present invention, described mirror surface is between light source and testee.
The invention has the beneficial effects as follows: a kind of reflection-type photoelectric sensing apparatus that the present invention points out, utilize the principle of work of mirror surface, expanded the catoptrical capture range of shone thing, reduced the sensitivity of sensor output signal to shone thing distance, little to exciting light and catoptrical decay containing foraminate mirror surface, be applied in printer or fluorescence excitation and collection field, can make the job stability of equipment and efficiency significantly improve.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also according to these accompanying drawings, obtain other accompanying drawing, wherein:
Fig. 1 is the structural representation of reflection-type photoelectric sensing apparatus one preferred embodiment of the present invention;
Fig. 2 is reflection-type photoelectric sensing apparatus working effect schematic diagram of the present invention;
Fig. 3 is the structural representation of the embodiment of common reflection-type photoelectric sensing apparatus;
Fig. 4 is common reflection-type photoelectric sensing apparatus working effect schematic diagram;
Fig. 5 is the structural representation of another preferred embodiment of reflection-type photoelectric sensing apparatus of the present invention;
In accompanying drawing, the mark of each parts is as follows: 1, light source, 2, mirror surface, 3, photo-detector.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 to Fig. 5, the embodiment of the present invention comprises:
A kind of reflection-type photoelectric sensing apparatus, comprise: light source 1, mirror surface 2 and photo-detector 3, in the middle of described mirror surface 2, there is a printing opacity aperture, described light source 1 tilts to invest mirror surface 2 by light beam, light beam projects shone thing by middle printing opacity aperture, and described photo-detector 3 is positioned at a side of mirror surface 2.
In order to make light concentrating comparatively, the light source 1 that reflection-type photoelectric sensing apparatus of the present invention adopts be LED lamp, optical fiber importing light source or generating laser, and the light emitting is comparatively concentrated, and in transmitting procedure, loss is little.Fig. 1 is the structural representation that the present invention is applied in printer field, and the light source 1 of employing is LED lamp or laser, and the structural representation that excites and gather field of Fig. 5 to be the present invention be applied in fluorescent object, the light source 1 adopting is that optical fiber imports light source.
In reflection-type photoelectric sensing apparatus of the present invention, mirror surface 2 is between light source 1 and testee.What particularly point out is printing opacity aperture on the mirror surface 2 of placing between light source 1 and the shone thing output signal that can make photo-detector 3 along with variation more sharply occurs for the change in location of shone thing, thereby can determine more accurately the position of shone thing.And the perforate of printing opacity aperture on mirror surface 2 of the present invention is less than 5mm, work efficiency is high, and facilitates the importing of optical fiber.It needs to be noted, the printing opacity aperture on mirror surface 2 can be the printing opacity aperture drilling through on mirror surface 2, can be also that the mirror surface 2 that glass plate or plastic plate are made is plating the printing opacity aperture staying after reflective membrane.
Contrast the structure of common reflection-type photoelectric sensing apparatus, be mainly the utilization of mirror surface 2 with the difference of reflection-type photoelectric sensing apparatus of the present invention.What the present invention mainly utilized is exactly the catoptrical concentrated reflexs of 2 pairs of shone things of mirror surface, and photo-detector 3 is towards mirror surface, and mirror surface 2 is at a certain angle with photo-detector 3 shapes.The surface area of mirror surface 2 is larger, can accept extensively the reflected light of shone thing, then reflexes to the receiving plane of photo-detector 3.
Contrast common reflection-type photoelectric sensing apparatus working effect figure, can find, operating distance of the present invention is more broad, and the change of the operating distance in certain limit is less on the signal output impact of photo-detector 3, and common reflection-type photoelectric sensing apparatus is higher to the stability requirement of operating distance.
Fig. 5 is that the present invention is applied in exciting of fluorescent object and gathers the structural representation in field, mirror surface 2 has replaced the spectroscope using in prior art, light source 1 is optical fiber importing light source, spectroscope has larger decay to the utilizing emitted light of the exciting light of light source and fluorescent object, and mirror surface 2 contain aperture on exciting light substantially do not have impact, and high to the radiative reflection efficiency of fluorescent object, decay little, be beneficial to the collection of 3 pairs of light signals of photo-detector.
In sum, a kind of reflection-type photoelectric sensing apparatus that the present invention points out, good stability, operating distance scope are open, in process, the decay of light is little, work efficiency is high, can be widely used in the association areas such as printer and fluorescence excitation and collection, improves the stability of use equipment.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a reflection-type photoelectric sensing apparatus, it is characterized in that, comprise: light source, mirror surface and photo-detector, in the middle of described mirror surface, there is a printing opacity aperture, described light source tilts to invest mirror surface by light beam, light beam projects shone thing by middle printing opacity aperture, and described photo-detector is positioned at a side of mirror surface.
2. reflection-type photoelectric sensing apparatus according to claim 1, is characterized in that, described light source is that LED lamp, optical fiber import light source or generating laser.
3. reflection-type photoelectric sensing apparatus according to claim 1, is characterized in that, the perforate of the printing opacity aperture on described mirror surface is less than 5mm.
4. reflection-type photoelectric sensing apparatus according to claim 3, is characterized in that, described photo-detector is towards mirror surface, and mirror surface and photo-detector shape at a certain angle.
5. reflection-type photoelectric sensing apparatus according to claim 3, is characterized in that, described mirror surface is between light source and testee.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310520990.7A CN103528610B (en) | 2013-10-30 | 2013-10-30 | Reflection-type photoelectric sensing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310520990.7A CN103528610B (en) | 2013-10-30 | 2013-10-30 | Reflection-type photoelectric sensing apparatus |
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| CN103528610A true CN103528610A (en) | 2014-01-22 |
| CN103528610B CN103528610B (en) | 2016-08-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596511A (en) * | 2016-12-27 | 2017-04-26 | 南京先进激光技术研究院 | Reflection type coaxial structure laser-induced breakdown spectroscopy analysis device |
| CN111561863A (en) * | 2020-05-22 | 2020-08-21 | 维沃移动通信有限公司 | Electronic equipment |
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| CN1448692A (en) * | 2002-02-15 | 2003-10-15 | 欧姆龙株式会社 | Displacement transducer |
| CN201014990Y (en) * | 2007-02-08 | 2008-01-30 | 北京工业大学 | Laser-induced fluorescence confocal scanning device |
| CN101371787A (en) * | 2007-08-24 | 2009-02-25 | 深圳市蓝韵实业有限公司 | Device and method for testing light path system of radiographic detector |
| CN102620842A (en) * | 2012-04-10 | 2012-08-01 | 中国科学院光电技术研究所 | Device and method for detecting optical surface shapes of hole diffraction spherical waves |
| CN102636422A (en) * | 2012-05-09 | 2012-08-15 | 上海理工大学 | Nanoparticle solution concentration measuring device and measuring method thereof |
| CN203561375U (en) * | 2013-10-30 | 2014-04-23 | 苏州晋翌生物医学仪器有限公司 | Reflective photoelectric sensing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5983720A (en) * | 1995-12-06 | 1999-11-16 | Orbital Technologies Corporation | Reflected light rotation sensor |
| CN1448692A (en) * | 2002-02-15 | 2003-10-15 | 欧姆龙株式会社 | Displacement transducer |
| CN201014990Y (en) * | 2007-02-08 | 2008-01-30 | 北京工业大学 | Laser-induced fluorescence confocal scanning device |
| CN101371787A (en) * | 2007-08-24 | 2009-02-25 | 深圳市蓝韵实业有限公司 | Device and method for testing light path system of radiographic detector |
| CN102620842A (en) * | 2012-04-10 | 2012-08-01 | 中国科学院光电技术研究所 | Device and method for detecting optical surface shapes of hole diffraction spherical waves |
| CN102636422A (en) * | 2012-05-09 | 2012-08-15 | 上海理工大学 | Nanoparticle solution concentration measuring device and measuring method thereof |
| CN203561375U (en) * | 2013-10-30 | 2014-04-23 | 苏州晋翌生物医学仪器有限公司 | Reflective photoelectric sensing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596511A (en) * | 2016-12-27 | 2017-04-26 | 南京先进激光技术研究院 | Reflection type coaxial structure laser-induced breakdown spectroscopy analysis device |
| CN111561863A (en) * | 2020-05-22 | 2020-08-21 | 维沃移动通信有限公司 | Electronic equipment |
| CN111561863B (en) * | 2020-05-22 | 2022-04-15 | 维沃移动通信有限公司 | Electronic equipment |
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| CN103528610B (en) | 2016-08-10 |
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Effective date of registration: 20210507 Address after: 310000 Room 302, building 5, 1818-2, Wenyi West Road, Yuhang street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Jushi Information Technology Co.,Ltd. Address before: 215500 Room 203, science and Technology Park, Changshu Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee before: Suzhou Jinyi Biomedical Instrument Co.,Ltd. |
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