CN103528528A - Compact type precise laser triangular range finder - Google Patents
Compact type precise laser triangular range finder Download PDFInfo
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- CN103528528A CN103528528A CN201310487725.3A CN201310487725A CN103528528A CN 103528528 A CN103528528 A CN 103528528A CN 201310487725 A CN201310487725 A CN 201310487725A CN 103528528 A CN103528528 A CN 103528528A
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Abstract
The invention discloses a compact type precise laser triangular range finder. The compact type precise laser triangular range finder comprises an instrument body, wherein the instrument body is internally provided with a laser diode collimation module, a laser beam converging lens, an imaging lens set and an image sensor; the compact type precise laser triangular range finder further comprises a laser reflection mirror and an imaging reflection mirror; the laser diode collimation module emits a collimation laser beam; after being reflected by the converging lens and the laser reflection mirror, the laser beam is obliquely converged to the surface of a sample outside the instrument body; the reflected light of the surface of the sample is reflected by the imaging reflection mirror to form an imaging light beam parallel to the collimation laser beam and then is emitted into the imaging lens set; and finally, the imaging light beam is projected on the image sensor. Compared with a traditional laser triangulator, the size of the instrument is reduced effectively so that the laser triangulator is suitable for the requirements of a narrow measurement space.
Description
Technical field
The present invention relates to a kind of displacement measuring instrument, particularly a kind of compact precise laser range of triangle instrument.
Background technology
Laser triangulation method is a kind of of photoelectric detecting technology, due to the method have simple in structure, measuring speed is fast, processing capability in real time is strong, the advantage such as flexible and convenient to use, in the detections such as distance, displacement, height and three-dimensional appearance, have a wide range of applications.
Laser triangular distance measuring apparatus generally converges eyeglass, imaging lens group and detector by laser diode, laser beam and forms, and is characterized in that laser beam converges between light path and imaging detection light path and has an angle.When the position of body surface changes, also there is corresponding displacement in its imaging on detector.By picture move and actual displacement between relational expression, real ohject displacement can and calculate by the detection that picture is moved.
Along with the growth requirement of factory automation in recent years, laser triangulation has very large lifting in the technical indicators such as measurement range, measuring accuracy and survey frequency, has adapted to thus in production automation application harsher requirements such as measuring accuracy, measuring speeds.But, because this technical characterstic is that laser beam converges between light path and imaging detection light path and has an angle, limited the miniaturization development of this instrument, particularly need small sample to be carried out to the application of multimetering with a plurality of laser triangulation instrument.
Summary of the invention
In order to make up above deficiency, the invention provides a kind of compact precise laser range of triangle instrument, this compact precise laser range of triangle instrument is compared with traditional laser triangulation instrument, has effectively dwindled block dimension.
The present invention for the technical scheme that solves its technical matters and adopt is: a kind of compact precise laser range of triangle instrument, comprise instrument body, in described instrument body, be provided with laser collimation modules, laser beam converges eyeglass, imaging lens set and imageing sensor, also comprise laser mirror and imaging mirror, described laser collimation modules transmitting collimated laser beam, this laser beam is through converging after eyeglass and laser mirror reflection, tilt to converge to be located at this external sample surfaces of instrument, the reflected light of sample surfaces forms the imaging beam parallel with collimated laser beam and incides imaging lens set after the reflection of imaging mirror, last imaging beam is incident upon on imageing sensor, compare and effectively reduced instrument size with conventional laser triangulator.
As a further improvement on the present invention, in described laser optical path, be provided with light intensity attenuation sheet, described light intensity attenuation sheet is located at arbitrary position in laser optical path, and its effect is that laser beam intensity is suitably decayed, to adapt to imageing sensor, survey, concrete placement location is not limit.
As a further improvement on the present invention, described instrument body is provided with a detection window in the light path between sample and laser mirror, imaging mirror, described detection window collimation laser beam-wave grows tall, to the reflection of growing tall of other laser waves, can effectively stop that extraneous veiling glare enters instrument internal to measurements interference and dust.
As a further improvement on the present invention, after described imaging lens set, be provided with an aperture diaphragm, for being constrained to picture width of light beam, make this laser triangulation instrument be applicable to measure diffuse reflection sample.
The invention has the beneficial effects as follows: the present invention by introducing laser mirror and imaging mirror in light path, make Laser emission light path parallel with imaging optical path, compare and effectively reduced instrument size with conventional laser triangulator, make this laser triangulation instrument be applicable to the requirement of narrow and small measurement space.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is conventional laser triangulator light path principle figure;
In figure, indicate: 1-laser collimation modules; 2-laser beam converges eyeglass; 3-laser mirror; 4-imaging mirror; 5-imaging lens set; 6-imageing sensor; 7-light intensity attenuation sheet; 8-detection window; 9-sample; 10-aperture diaphragm; 11-collimated laser beam; 12-imaging beam, 13-instrument body.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
Fig. 1 shows a kind of embodiment of a kind of compact precise laser of the present invention range of triangle instrument, comprise instrument body 13, in described instrument body 13, be provided with laser collimation modules 1, laser beam converges eyeglass 2, imaging lens set 5 and imageing sensor 6, also comprise laser mirror 3 and imaging mirror 4, described laser collimation modules 1 transmitting collimated laser beam 11, this laser beam is through converging after eyeglass 2 and laser mirror 3 reflections, tilt to converge to be located at these external sample 9 surfaces of instrument, the reflected light on sample 9 surfaces forms the imaging beam parallel with collimated laser beam 11 12 and incides imaging lens set 5 after the reflection of imaging mirror 4, last imaging beam 12 is incident upon on imageing sensor 6, when the relative laser triangulation instrument in the surface of sample 9 moves forward and backward, the position that imaging beam 12 projects on imageing sensor also changes accordingly, this imageing sensor is sent to computing machine by the imaging beam change in location image being recorded to, by computing machine, finally calculate sample displacement.
In described laser optical path, be provided with light intensity attenuation sheet 7, described light intensity attenuation sheet 7 is located at arbitrary position in laser optical path, and its effect is that laser beam intensity is suitably decayed, and to adapt to imageing sensor, surveys, and concrete placement location is not limit.
Described instrument body is provided with a detection window 8 in the light path between sample 9 and laser mirror 3, imaging mirror 4, described detection window 8 collimation laser beam 11 wavelength are thoroughly high, to the reflection of growing tall of other laser waves, can effectively stop that extraneous veiling glare enters instrument internal to measurements interference and dust.
After described imaging lens set, be provided with an aperture diaphragm 10, for being constrained to picture width of light beam, make this laser triangulation instrument be applicable to measure diffuse reflection sample.
Claims (4)
1. a compact precise laser range of triangle instrument, comprise instrument body (13), in described instrument body (13), be provided with laser collimation modules (1), laser beam converges eyeglass (2), imaging lens set (5) and imageing sensor (6), it is characterized in that: also comprise laser mirror (3) and imaging mirror (4), described laser collimation modules (1) transmitting collimated laser beam (11), this laser beam is through converging after eyeglass (2) and laser mirror (3) reflection, tilt to converge to be located at this external sample (9) surface of instrument, the reflected light on sample (9) surface forms the imaging beam (12) parallel with collimated laser beam (11) and incides imaging lens set (5) after the reflection of imaging mirror (4), last imaging beam (12) is incident upon on imageing sensor (6).
2. compact precise laser range of triangle instrument according to claim 1, is characterized in that: in described laser optical path, be provided with light intensity attenuation sheet (7), described light intensity attenuation sheet (7) is located at arbitrary position in laser optical path.
3. compact precise laser range of triangle instrument according to claim 1, it is characterized in that: the light path that described instrument body (13) is positioned between sample (9) and laser mirror (3), imaging mirror (4) is provided with a detection window (8), described detection window (8) collimation laser beam (11) wavelength is high thoroughly, to the reflection of growing tall of other laser waves.
4. compact precise laser range of triangle instrument according to claim 1, it is characterized in that: after described imaging lens set (5), be provided with an aperture diaphragm (10), be used for being constrained to picture width of light beam, make this laser triangulation instrument be applicable to measure diffuse reflection sample.
Priority Applications (1)
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| CN201310487725.3A CN103528528A (en) | 2013-10-18 | 2013-10-18 | Compact type precise laser triangular range finder |
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| CN201310487725.3A CN103528528A (en) | 2013-10-18 | 2013-10-18 | Compact type precise laser triangular range finder |
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| CN103528528A true CN103528528A (en) | 2014-01-22 |
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| CN201310487725.3A Pending CN103528528A (en) | 2013-10-18 | 2013-10-18 | Compact type precise laser triangular range finder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316022A (en) * | 2014-11-04 | 2015-01-28 | 苏州精创光学仪器有限公司 | Improved compact precision laser triangulation rangefinder |
| CN106352801A (en) * | 2016-10-17 | 2017-01-25 | 海伯森技术（深圳）有限公司 | Laser triangular displacement sensor and correction method of non-linear errors of laser triangular displacement sensor |
| CN108195311A (en) * | 2018-03-29 | 2018-06-22 | 深圳市精易迅科技有限公司 | A kind of four visual angle 3D laser sensor of folded form and its method of work |
| CN108398102A (en) * | 2018-01-22 | 2018-08-14 | 江苏珩图智能科技有限公司 | Image collecting device and acquisition method when a kind of Curved screen detection |
| CN108535735A (en) * | 2018-04-13 | 2018-09-14 | 长春理工大学 | Range simulation device for indoor continuously adjustable |
| CN109141254A (en) * | 2018-10-15 | 2019-01-04 | 西安交通大学 | A kind of integrated diffraction grating formula high stability laser displacement sensor |
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| JPH0566114A (en) * | 1991-09-06 | 1993-03-19 | Hitachi Ltd | Thickness measuring device for transparent material |
| US20060066854A1 (en) * | 2001-03-26 | 2006-03-30 | Meeks Steven W | Combined high speed optical profilometer and ellipsometer |
| CN101726253A (en) * | 2008-10-31 | 2010-06-09 | 徐熙平 | Photoelectric detection system for wall thickness of quartz tube |
| CN203518946U (en) * | 2013-10-18 | 2014-04-02 | 苏州精创光学仪器有限公司 | Compact-type precise laser triangulation rangefinder |
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2013
- 2013-10-18 CN CN201310487725.3A patent/CN103528528A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0566114A (en) * | 1991-09-06 | 1993-03-19 | Hitachi Ltd | Thickness measuring device for transparent material |
| US20060066854A1 (en) * | 2001-03-26 | 2006-03-30 | Meeks Steven W | Combined high speed optical profilometer and ellipsometer |
| CN101726253A (en) * | 2008-10-31 | 2010-06-09 | 徐熙平 | Photoelectric detection system for wall thickness of quartz tube |
| CN203518946U (en) * | 2013-10-18 | 2014-04-02 | 苏州精创光学仪器有限公司 | Compact-type precise laser triangulation rangefinder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316022A (en) * | 2014-11-04 | 2015-01-28 | 苏州精创光学仪器有限公司 | Improved compact precision laser triangulation rangefinder |
| CN106352801A (en) * | 2016-10-17 | 2017-01-25 | 海伯森技术（深圳）有限公司 | Laser triangular displacement sensor and correction method of non-linear errors of laser triangular displacement sensor |
| CN106352801B (en) * | 2016-10-17 | 2018-03-02 | 海伯森技术（深圳）有限公司 | A kind of modification method of laser triangle displacement sensor and its nonlinearity erron |
| CN108398102A (en) * | 2018-01-22 | 2018-08-14 | 江苏珩图智能科技有限公司 | Image collecting device and acquisition method when a kind of Curved screen detection |
| CN108195311A (en) * | 2018-03-29 | 2018-06-22 | 深圳市精易迅科技有限公司 | A kind of four visual angle 3D laser sensor of folded form and its method of work |
| CN108535735A (en) * | 2018-04-13 | 2018-09-14 | 长春理工大学 | Range simulation device for indoor continuously adjustable |
| CN109141254A (en) * | 2018-10-15 | 2019-01-04 | 西安交通大学 | A kind of integrated diffraction grating formula high stability laser displacement sensor |
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Inventor after: Chen Liping Inventor after: Shang Xiuxin Inventor before: Shang Xiuxin |
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Application publication date: 20140122 |