CN204989469U - Many emission unit laser rangefinder with strengthen remote range finding ability - Google Patents
Many emission unit laser rangefinder with strengthen remote range finding ability Download PDFInfo
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- CN204989469U CN204989469U CN201520561354.3U CN201520561354U CN204989469U CN 204989469 U CN204989469 U CN 204989469U CN 201520561354 U CN201520561354 U CN 201520561354U CN 204989469 U CN204989469 U CN 204989469U
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Abstract
The utility model discloses a many emission unit laser rangefinder with strengthen remote range finding ability relates to the laser action field. The device includes: laser receiving unit, multichannel laser emission unit and synchronization pulse produce the unit. Synchronization pulse produces the originated moment fine synchronization's of unit output multichannel pulse laser control impuls, input multichannel laser emission unit respectively in control multichannel laser diode synchronous luminous. Because there is certain angle of divergence in the collimation facula, the outgoing facula of multichannel collimation unit is superposeing at a distance each other, and at the angle of vision within range of laser receiving unit, the laser receiving unit was received the laser intensity and is strengthened by a wide margin, had strengthened the range finding ability of laser instrument. The device is arranged in scanning formula laser rangefinder system, and the facula separation of multichannel collimation unit superposes at a distance each other nearby, on the basis of not improving laser emission power, can strengthen the remote range finding ability of laser instrument, can realize laser instrument people eye one -level safety again.
Description
Technical field
The utility model relates to laser application technique field, is specifically related to a kind ofly have the multi-emitting unit laser ranging system strengthening remote range capability.
Background technology
In recent years, laser ranging technique relies on its high-level efficiency, the not advantage such as contact measurement, high precision, and become one of technical field of nondestructive testing inner core technology, its distance measuring equipment is widely used in the fields such as accurate measurement, location navigation, security protection.
Existing laser distance measuring system adopts coaxial and parallel shafts optical system mostly.The transmitting optical axis of coaxial system laser emission element and the reception optical axis of laser pick-off unit overlap, and the transmitting optical axis of parallel shafts optical system laser emission element and the reception optical axis of laser pick-off unit are parallel to each other.The laser energy density that testee reflects is mainly with centered by emission shaft to abaxial direction being normal distribution.Coaxial system transmitter unit can block receiving element core position, and parallel axis system completely emission shaft and receiving axes exists spacing, and these all can the remote range capability of Limited Pulses laser instrument and precision.
Current existing pulse laser distance measuring device majority adopts the mode of the emergent light power improving laser sending unit to improve the remote range capability of laser instrument, energy density on hand in laser instrument unit area can damage human eye time larger, and the scanning type laser sensor adopting this distance measuring equipment to form does not reach the standard of human eye one level security in exit window.
Utility model content
For the deficiency that existing pulse laser distance measuring device exists, the purpose of this utility model is that providing a kind of has the multi-emitting unit laser ranging system strengthening remote range capability.
The utility model provides a kind of and has the multi-emitting unit laser ranging system strengthening remote range capability, and its composition comprises:
Synchronizing pulse generation unit, for the gating pulse of output multi-channel initial time precise synchronization, inputs in multi-path laser transmitter unit respectively and controls multipath pulse laser diode synchronous light-emitting;
Multi-path laser transmitter unit, for the collimated emission of multipath pulse laser, and for the emergent light spot of multichannel collimation unit is superposed a long way off mutually, the remote range capability of intensifier pulse laser instrument;
Laser pick-off unit, for assembling laser energy that object reflects and receiving.
Described laser pick-off unit, comprises receiver lens, photo-electric conversion element and amplifying circuit, for assembling the laser energy that object reflects, and this light signal being converted into electric signal, finding range for timing.
Described multi-path laser transmitter unit comprises: multiple laser tube, multiple laser drive circuit and collimator lens assembly, and described laser tube is fixed on the optical axis of collimator lens assembly.
Described multiple laser tubes are welded on multiple laser drive circuit respectively, described multiple laser drive circuits are simultaneously luminous for the gating pulse driving laser diode receiving synchronizing pulse generation unit output multi-channel initial time precise synchronization, the light of described collimator lens assembly to laser diode outgoing collimates, there is certain angle of divergence in collimation hot spot, mutually superpose a long way off, strengthen the laser intensity that distant object thing reflects.
The utility model technical scheme advantage used is as follows:
(1) emergent light spot of the utility model multichannel collimation unit superposes a long way off mutually, and within the scope of the field angle of laser pick-off unit, laser pick-off unit receives laser intensity significantly to be strengthened, and enhances the range capability of laser instrument.
(2) this device of the utility model is used in scanning type laser range measurement system, the hot spot of multichannel collimation unit is separated nearby, mutually superposes at a distance, is not improving on the basis of laser emitting power, the remote range capability of laser instrument can be strengthened, laser instrument human eye one level security can be realized again.
(3) the utility model structure is simple, is easy to realize.
Accompanying drawing explanation
Fig. 1 a kind ofly has the multi-emitting unit laser scan type distance measuring equipment structural representation strengthening remote range capability.
Fig. 2 a kind ofly in the utility model embodiment has the multi-emitting unit laser scan type distance measuring equipment strengthening remote range capability.
Fig. 3 is the schematic diagram of the utility model emergent light spot.
Embodiment
Below in conjunction with legend and embodiment, utility model is described further.
Consult Fig. 2, the utility model embodiment is a kind of structural representation strengthening remote range capability multi-emitting unit scan formula laser ranging system, comprising: laser emission element 101, laser emission element 102, laser pick-off unit 103, synchronizing pulse generation unit 104, four prism scanning element 105.
Laser emission element 101 and laser emission element 102 are made up of laser tube diode, laser drive circuit and collimator lens assembly, respectively for the collimation of pulsed laser diode emergent ray.Laser pick-off unit 103 is made up of receiver lens, photo-electric conversion element and amplifying circuit, for assembling the laser energy that object reflects, and this light signal being converted into electric signal, finding range for timing.Synchronizing pulse generation unit 104, for exporting the gating pulse of two-way initial time precise synchronization, inputting in laser emission element 101 and laser emission element 102 respectively and controlling two-way pulsed laser diode synchronous light-emitting.Four prism scanning elements 105, by four faces be four prism load elements of catoptron, scan module and motor drive and form, utilize driven by motor reflecting surface 1, reflecting surface 2, reflecting surface 3 and reflecting surface 4 to rotate the scanning completed respectively object and find range.
The reflection optical axis 1 of laser emission element 101 and the reflection optical axis 2 of laser emission element 102 receive optical axis with laser pick-off unit 103 and are parallel to each other, reflection optical axis 1, reception optical axis and reflection optical axis 2 equidistantly distribute successively from top to bottom, and spacing is the radius of laser pick-off unit 103 receiver lens.In four prism scanning elements 105, the rotating shaft of scan module is arranged on the symcenter of four prism load elements, the rotating shaft of scan module and reflection optical axis 1, reflection optical axis 2 and to receive optical axis spatially mutually vertical.
During concrete enforcement, when in four prism scanning elements 105, drive and control of electric machine motor forwards certain position to, four reflectings surface always have the scanning position that a catoptron is in objective plane, now synchronizing pulse generation unit 104 triggers the gating pulse exporting two-way initial time precise synchronization simultaneously, inputs in laser emission element 101 and laser emission element 102 respectively and controls two-way pulsed laser diode synchronous light-emitting.Laser emission element 101 and laser emission element 102 emergent ray are after catoptron reflection, and emergent light spot arrives on object after mutually superposing a long way off simultaneously.Laser pick-off unit 103, assembles the laser energy that object reflects, and this light signal is converted into electric signal.Is deducted the triggered time of synchronizing pulse generation unit 104 time of arrival of electric signal pulse, i.e. light two-way time of propagating between laser instrument and object, be multiplied by the light velocity again divided by two, be the air line distance between laser instrument and object.
During concrete enforcement, after synchronizing pulse generation unit 104 synchronously triggers, laser emission element 101 and the lens combination in laser emission element 102 collimate the fast axle of laser diode emergent light spot and slow-axis direction respectively, after collimation all there is certain angle of divergence at fast axle and slow-axis direction in rectangular light spot, and wherein rectangular light spot is greater than slow-axis direction in the angle of divergence of quick shaft direction.Laser emission element 101 is vertical with reflection optical axis 2 with reflection optical axis 1 with the quick shaft direction of laser emission element 102 outgoing rectangular light spot, and rectangular light spot on hand hot spot is separated, and mutually superposes a long way off, strengthens the laser intensity that distant object thing reflects.
Consult Fig. 3, a kind of emergent light spot schematic diagram strengthening remote range capability multi-emitting unit scan formula laser ranging system.The large quick shaft direction of the rectangular light spot angle of divergence is perpendicular to the direction of propagation of light.Owing to there is the diameter that spacing is laser pick-off unit 103 receiver lens between reflection optical axis 1 and reflection optical axis 2, hot spot is separated on hand.The diameter of laser pick-off unit 103 receiver lens is far longer than the pupil diameter of human eye, energy density on hand in laser instrument unit area is basically identical with the single transmitter unit of employing, and therefore this type of multi-emitting unit scan formula laser ranging system strengthening remote range capability can reach human eye one-level safety standard on hand.Along with the increase of distance, rectangular light spot superposes a long way off mutually, strengthens the laser intensity that distant object thing reflects, enhances the range capability of laser instrument.
Above-described embodiment is only a preferred version of the present utility model, and be not used to limit substantial technological context of the present utility model, substantial technological content of the present utility model is broadly defined in the right of application, any technology entities that other people complete or method, if with application right define identical, also or a kind of change of equivalence, be all covered by being regarded as among this right.
Claims (4)
1. there is the multi-emitting unit laser ranging system strengthening remote range capability, it is characterized in that, comprise synchronizing pulse generation unit, multi-path laser transmitter unit and laser pick-off unit;
Described synchronizing pulse generation unit, for the gating pulse of output multi-channel initial time precise synchronization, inputs respectively in described multi-path laser transmitter unit and controls multipath pulse laser diode synchronous light-emitting;
Described multi-path laser transmitter unit, for the collimated emission of multipath pulse laser, and for the emergent light spot of multichannel collimation unit is superposed a long way off mutually, the remote range capability of intensifier pulse laser instrument;
Described laser pick-off unit, for assembling laser energy that object reflects and receiving.
2. according to a kind of described in claim 1, there is the multi-emitting unit laser ranging system strengthening remote range capability, it is characterized in that, described laser pick-off unit, comprise receiver lens, photo-electric conversion element and amplifying circuit, for assembling the laser energy that object reflects, and this light signal is converted into electric signal, find range for timing.
3. according to a kind of described in claim 1, there is the multi-emitting unit laser ranging system strengthening remote range capability, it is characterized in that, described multi-path laser transmitter unit comprises: multiple laser tube, multiple laser drive circuit and collimator lens assembly, described laser tube is fixed on the optical axis of collimator lens assembly.
4. according to a kind of described in claim 3, there is the multi-emitting unit laser ranging system strengthening remote range capability, it is characterized in that, described multiple laser tubes are welded on multiple laser drive circuit respectively, described multiple laser drive circuits are simultaneously luminous for the gating pulse driving laser diode receiving synchronizing pulse generation unit output multi-channel initial time precise synchronization, the light of described collimator lens assembly to laser diode outgoing collimates, there is certain angle of divergence in collimation hot spot, mutually superpose a long way off, strengthen the laser intensity that distant object thing reflects.
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Cited By (12)
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| CN106338725A (en) * | 2016-08-31 | 2017-01-18 | 深圳市微觉未来科技有限公司 | Optical module for low cost laser distance measurement |
| CN106526609A (en) * | 2016-12-15 | 2017-03-22 | 深圳市迈测科技股份有限公司 | Laser distance measuring system, device, combination device and method |
| WO2017132704A1 (en) | 2016-01-31 | 2017-08-03 | Velodyne Lidar, Inc. | Lidar based 3-d imaging with far-field illumination overlap |
| CN107655446A (en) * | 2017-10-30 | 2018-02-02 | 成都捷测科技有限公司 | Laser measuring device for measuring |
| CN108562886A (en) * | 2018-04-16 | 2018-09-21 | 上海禾赛光电科技有限公司 | laser radar and its manufacturing method |
| WO2019157632A1 (en) * | 2018-02-13 | 2019-08-22 | 深圳市大疆创新科技有限公司 | Ranging system, automation device and ranging method |
| CN110573060A (en) * | 2017-04-28 | 2019-12-13 | 约纳坦·格利茨 | eye safety system for laser |
| JP2020003329A (en) * | 2018-06-28 | 2020-01-09 | パイオニア株式会社 | Optical device, distance measuring device, and distance measuring method |
| CN110780312A (en) * | 2019-10-15 | 2020-02-11 | 深圳奥锐达科技有限公司 | Adjustable distance measuring system and method |
| CN112394845A (en) * | 2019-08-19 | 2021-02-23 | 北京小米移动软件有限公司 | Distance sensor module, display device, electronic apparatus, and distance detection method |
| CN113759382A (en) * | 2021-10-19 | 2021-12-07 | 上海兰宝传感科技股份有限公司 | Distance measuring circuit and application thereof |
| WO2023067693A1 (en) * | 2021-10-19 | 2023-04-27 | パイオニア株式会社 | Ranging device |
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2015
- 2015-07-29 CN CN201520561354.3U patent/CN204989469U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017132704A1 (en) | 2016-01-31 | 2017-08-03 | Velodyne Lidar, Inc. | Lidar based 3-d imaging with far-field illumination overlap |
| CN108603937B (en) * | 2016-01-31 | 2024-01-05 | 威力登激光雷达有限公司 | LIDAR 3-D imaging with far field illumination overlay |
| CN108603937A (en) * | 2016-01-31 | 2018-09-28 | 威力登激光雷达有限公司 | LIDAR formulas 3-D imagings with far field irradiation overlapping |
| EP3408684A4 (en) * | 2016-01-31 | 2019-10-02 | Velodyne LiDAR, Inc. | Lidar based 3-d imaging with far-field illumination overlap |
| US11723762B2 (en) | 2016-01-31 | 2023-08-15 | Velodyne Lidar, Inc. | LIDAR based 3-D imaging with far-field illumination overlap |
| CN106338725A (en) * | 2016-08-31 | 2017-01-18 | 深圳市微觉未来科技有限公司 | Optical module for low cost laser distance measurement |
| CN106526609A (en) * | 2016-12-15 | 2017-03-22 | 深圳市迈测科技股份有限公司 | Laser distance measuring system, device, combination device and method |
| CN106526609B (en) * | 2016-12-15 | 2023-08-01 | 深圳市迈测科技股份有限公司 | Laser ranging system, device, combined device and method |
| CN110573060A (en) * | 2017-04-28 | 2019-12-13 | 约纳坦·格利茨 | eye safety system for laser |
| CN107655446A (en) * | 2017-10-30 | 2018-02-02 | 成都捷测科技有限公司 | Laser measuring device for measuring |
| CN107655446B (en) * | 2017-10-30 | 2023-09-22 | 成都捷测科技有限公司 | Laser measuring device |
| CN110383105A (en) * | 2018-02-13 | 2019-10-25 | 深圳市大疆创新科技有限公司 | Range-measurement system, automation equipment and distance measuring method |
| WO2019157632A1 (en) * | 2018-02-13 | 2019-08-22 | 深圳市大疆创新科技有限公司 | Ranging system, automation device and ranging method |
| CN108562886B (en) * | 2018-04-16 | 2020-09-11 | 上海禾赛光电科技有限公司 | Laser radar and method for manufacturing same |
| CN108562886A (en) * | 2018-04-16 | 2018-09-21 | 上海禾赛光电科技有限公司 | laser radar and its manufacturing method |
| JP2022164850A (en) * | 2018-06-28 | 2022-10-27 | パイオニア株式会社 | Optical device, distance measuring device and distance measuring method |
| JP2020003329A (en) * | 2018-06-28 | 2020-01-09 | パイオニア株式会社 | Optical device, distance measuring device, and distance measuring method |
| EP3783389A1 (en) * | 2019-08-19 | 2021-02-24 | Beijing Xiaomi Mobile Software Co., Ltd. | Distance sensor module, display device, electronic device and distance detection method |
| US10991298B2 (en) | 2019-08-19 | 2021-04-27 | Beijing Xiaomi Mobile Software Co., Ltd. | Distance sensor, display device, electronic device and distance detection method |
| CN112394845A (en) * | 2019-08-19 | 2021-02-23 | 北京小米移动软件有限公司 | Distance sensor module, display device, electronic apparatus, and distance detection method |
| CN112394845B (en) * | 2019-08-19 | 2024-03-01 | 北京小米移动软件有限公司 | Distance sensor module, display device, electronic equipment and distance detection method |
| CN110780312A (en) * | 2019-10-15 | 2020-02-11 | 深圳奥锐达科技有限公司 | Adjustable distance measuring system and method |
| CN113759382A (en) * | 2021-10-19 | 2021-12-07 | 上海兰宝传感科技股份有限公司 | Distance measuring circuit and application thereof |
| WO2023067693A1 (en) * | 2021-10-19 | 2023-04-27 | パイオニア株式会社 | Ranging device |
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