CN203287522U - Light path structure for laser ranging - Google Patents
Light path structure for laser ranging Download PDFInfo
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- CN203287522U CN203287522U CN2013200158980U CN201320015898U CN203287522U CN 203287522 U CN203287522 U CN 203287522U CN 2013200158980 U CN2013200158980 U CN 2013200158980U CN 201320015898 U CN201320015898 U CN 201320015898U CN 203287522 U CN203287522 U CN 203287522U
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- light path
- lock road
- laser
- light
- laser ranging
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Abstract
The utility model provides a light path structure for laser ranging. The light path structure comprises a machine body and a light emitting component which is assembled in the machine body. The machine body is internally provided with a transmission channel and a receiving channel. The machine body is additionally provided with a correction channel which is communicated with the transmission channel and the receiving channel. The light emitting component is assembled in the transmission channel. The light emitting component transmits two light beams which are an inner light path and an outer light path. The outer light path is transmitted through the transmission channel. The inner light path is transmitted to the receiving channel through the correction channel. An included angle space is formed between the outer light path and the inner light path, the mutual interference of the inner light path and the outer light path is avoided, and a light receiver is arranged in the receiving channel. According to the light path structure for laser ranging, a laser beam is transmitted to a target object and then is received and transmitted back, the effective measurement of a distance to the target object is achieved, in the laser setting in the machine body, two laser light sources are integratedly assembled in one single electrical substrate so as to reduce the cost and the space occupied, and a measuring error value generated by the change of environment and temperature is improved.
Description
Technical field
The utility model is relevant for a kind of light channel structure of laser ranging, in details of the words can improve about a kind of the measurement error value that produces Yin Huan Base-on-environment and temperature variation, and the light channel structure of raising Instrument measuring precision and reliability, further have the design of saving manufacturing time and cost concurrently.
Background technology
Though in early days measure soil, building construction equidistant on, be the foundation that coordinates tape measure (cloth measure) to be used as measuring with traditional black mark-line mostly, still, this mode can cause indecency on attractive in appearance and efficiency and temporal expending in work.Yet with flourishing, the instrument that is used for now measuring has advanced to irradiation and the reflection that utilizes light along with the progress of science and technology, measure and object between distance.
Common stadimeter has utilized laser beam to use on the market again, because laser light has the high power density high monochromaticity, the large advantage of high directivity and high coherence etc. four, therefore, laser ranging instrument commonly used, for using LASER Light Source to send light modulated on target, carrys out reflector laser signal to a laser pickoff by this object.LASER Light Source emission one modulated beam of light, the phase place of echoed signal that detecting device is received is ψ, and with a local oscillator, producing beat frequency (Beat) signal, this moment, phase detectors can be measured the phase difference ψ between emission and reception signal, and calculated whereby distance.
yet, existing laser ranging instrument was within it in the mechanism of section in the past, adopted the LASER Light Source irradiation of two different wave lengths, its only be used for together surveying and object between distance, another road light is to proofread and correct by the light path of object resilience and the astigmatism of instrument internal, yet, its temperature that produces of the LASER Light Source of different wave length also can be different, and then cause instrument internal can't bear the impact that different light rays is brought, cause impact or payment each other between light, cause finally measuring and object between distance error to some extent, for this reason, just must install so-called several optical filter additional in instrument, separate with the irradiated region with indivedual different LASER Light Source, avoid the reciprocal effect between light, but, be equiped with optical filter more and can cause weight on single unit system and the raising on cost.
See also again TaiWan, China patent announcement I245916 " laser light positional detecting device ", be applicable to survey the laser light position of a laser light emitter, this laser light emitter comprises a point of aim mark.This laser light positional detecting device comprises an operating surface, relative with this laser light emitter and is formed at this operating surface and with the corresponding reference mark, of this point of aim mark, is formed at the light receiving piece cluster of this operating surface, and one be formed at this operating surface and with the light display part group of the corresponding configuration of this light receiving piece cluster.When the point of aim mark of this laser light emitter during corresponding to this reference mark, laser light can be shone in this light receiving piece cluster, and this light display part group can produce the irradiation position of a luminous signal laser responding light, so that the operator to be provided, the optical axis of this laser light emitter is carried out correction operation.
And TaiWan, China patent announcement I288230 " laser distance measuring system with tripper ", a kind of laser distance measuring system with tripper, comprise object lens, a spectroscope, a transmitter, a receiver, and a tripper.The laser beam that this transmitter is exported can partly arrive the measuring beam of an object by this spectroscope to form one, and partly through this spectroscope, reflects to form a reference beam.This receiver can receive the measuring beam that passes through these object lens via this object reflection, and can receive this reference beam.This tripper can cover this measuring beam or cover this reference beam.While carrying out laser ranging whereby, this measuring beam and this reference beam just can be distinguished crested, make this receiver can obtain pure reference beam and measuring beam, and obtain measurement accurately after computing, and reach the requirement of low cost of manufacture, structural reduction.
But due to the restriction of the volume size of general laser ranging instrument product, and common LASER Light Source generally all adopts semiconductor laser light resource, in the course of the work can device heating, and cause the working point of semiconductor laser to be offset.Show as the variation in device reaction time, finally show as measuring distance and change.Common laser pickoff is the device for having the opto-electronic conversion effect, as photodiode, or Avalanche Photodiode (avalanche photo diode is called for short APD), especially take Avalanche Photodiode, have sensitivity preferably as good.But the Avalanche Photodiode normal operation needs higher reverse bias voltage.And with the variation of working temperature, Avalanche Photodiode must gain and also can change thereupon, shows as the variation in reaction time, finally also can cause the fluctuation of measuring distance, causes the numerical value of finally the measuring shortcoming of deviation to some extent.
In view of this, the inventor utilizes many time input research relevant knowledges, and more every quality in addition, and carry out the research and development of Related product, and go through many experiments and test, and finally release a kind of " light channel structure of laser ranging ", be and improve above-mentioned illustrated shortcoming, to meet popular required use.
The utility model content
technical problem underlying to be solved in the utility model is, overcome the variation with working temperature that prior art exists, Avalanche Photodiode in body must gain and also can change thereupon, show as the variation in reaction time, finally also can cause the fluctuation of measuring distance, cause the numerical value of finally the measuring shortcoming of deviation to some extent, and provide a kind of light channel structure of laser ranging, it utilizes laser beam to be transmitted through object, again via receiving retroeflection, reach effectively measure and object between distance, and the source, laser apparatus at internal body is set up, two LASER Light Source are concentrated and are assembled on single electrical substrate, to save the use on cost and space.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of light channel structure of laser ranging, the luminescence component that it includes a body and is mounted on internal body, wherein:
Be provided with a transmission lock road and in this body and receive the lock road, and separately be provided with a connection transmission lock road and the correction lock road that receives the lock road in this body;
This luminescence component is mounted in transmission lock road, and luminescence component emission two road light beams, it is an interior light path and an outer light path, be somebody's turn to do outer optical routing transmission lock road transmission and go out, should interior light path via proofreading and correct the lock road, be passed to reception lock road, be somebody's turn to do again between outer light path and interior light path and form tool one angle space, avoided the phase mutual interference of inside and outside light path, separately be provided with an optical receiver in receiving the lock road;
The light channel structure of the utility model laser ranging further includes following technical characterictic:
This luminescence component further includes an electrical substrate and a laser chip, and this laser chip and electrical substrate are electrically connected, and this outer light path and the irradiation of interior optical routing laser chip appear.
This luminescence component further includes an electrical substrate and several laser chip, and this laser chip and electrical substrate are electrically connected, and the several laser chips irradiations of this outer light path and interior optical routing appear.
Further separately be provided with a control device that is electrically connected with luminescence component on this body, this control device is controlled the quantity of the light on and off of several laser chips.
It is 2 degree～180 degree that this outer light path and interior optical routing luminescence component irradiate formed angle space.
This correction lock road further has a reflecting part, and in this reflecting part reflection, light path is to the optical receiver that receives the lock road.
The reflecting part in this correction lock road further separately is provided with a reflector plate, and this reflector plate is reflection water chestnut mirror or total reflection sheet.
Further separately be provided with an optic fibre wire in this correction lock road, this optic fibre wire is communicated to the optical receiver that receives the lock road through overcorrect lock road by transmission lock road.
Further separately be provided with an optical filter in this reception lock road, light path in this optical filter reflection or filtration, and towards the optical receiver irradiation that receives the lock road.
The beneficial effects of the utility model are, it utilizes laser beam to be transmitted through object, again via receiving retroeflection, reach effectively measure and object between distance, and the source, laser apparatus at internal body is set up, two LASER Light Source are concentrated and are assembled on single electrical substrate, to save the use on cost and space.
Description of drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is that the utility model cuts open schematic diagram.
Fig. 2 is the path schematic diagram of the interior light path of the utility model and outer light path.
Fig. 3 is the local enlarged diagram of the utility model luminescence component.
Fig. 4 is the local enlarged diagram of another embodiment of the utility model luminescence component.
Fig. 5 is that the utility model the second embodiment reflecting part is the diagrammatic cross-section of rough surface.
Fig. 6 is the diagrammatic cross-section that the utility model the 3rd embodiment reflecting part group is provided with reflector plate.
Fig. 7 is that the utility model the 4th embodiment proofreaies and correct the diagrammatic cross-section that is provided with optic fibre wire in the lock road.
Fig. 8 is the utility model the 5th embodiment is provided with catch on luminescence component diagrammatic cross-section.
Fig. 9 is that the set position of the utility model the 6th embodiment optical filter is higher than the diagrammatic cross-section of proofreading and correct the lock road.
Figure 10 is that the utility model the 7th embodiment proofreaies and correct the diagrammatic cross-section of lock road lower than luminescence component.
The number in the figure explanation:
1 body 11 transmission lock roads
12 receive lock road 13 proofreaies and correct the lock road
131 reflecting part 14 control device
The 2 outer light paths of luminescence component 21
22 interior light path 23 angle spaces
24 electrical substrate 25 laser chips
3 optical receiver 4 optical filters
5 reflector plate 6 optic fibre wires
7 catch
Embodiment
Be below with better enforcement kenel explanation, and not the utility model done any pro forma restriction, consult Fig. 1 to shown in Figure 2, the light channel structure of the utility model laser ranging, the luminescence component that it includes a body and is mounted on internal body, wherein:
Be provided with a transmission lock road 11 and in this body 1 and receive lock road 12, and in the interior connection transmission lock road 11 and the correction lock road 13 that receives lock road 12 that separately be provided with of this body 1, and in an end of proofreading and correct lock road 13, have a corresponding reflecting part 131 that receives lock road 12, transmission lock road 11 and reception lock road 12 provide body 1, and mutually are parallel shape;
This luminescence component 2 is mounted in transmission lock road 11, and luminescence component 2 emission two road light beams, it is an outer light path 21 and an interior light path 22, should outer light path 21 be gone out by 11 transmissions of transmission lock road, should interior light path 22 via proofreading and correct after lock road 13 exposes to reflecting part 131, be reflexed to again reception lock road 12, again should outer light path 21 and 22 formation tool one angle spaces 23 of interior light path, avoided inside and outside light path 22,21 phase mutual interference, separately be provided with an optical receiver 3 in reception lock road 12;
Accordingly to improve the measurement error value (aforementioned technical characteristics as the utility model master embodiment) that produces Yin Huan Base-on-environment and temperature variation.
, according to the inside and outside light path 22 of 2 transmissions of above-mentioned luminescence component, 21 illustrated, now in the following thin step, construction in its luminescence component 2 is described:
See also shown in Figure 3ly, this luminescence component 2 further includes an electrical substrate 24 and a laser chip 25, and this laser chip 25 is electrically connected with electrical substrate 24, and this inside and outside light path 22,21 is shone and gone out by laser chip 25 again; Yet, be equiped with single laser chip 25 in an above-mentioned electrical substrate 24, see also shown in Figure 4, another embodiment is for being equiped with several laser chips 25 on an electrical substrate 24, and each laser chip 25 is electrically connected with electrical substrate 24, and this inside and outside light path 22,21 is gone out by each laser chip 25 irradiations;
Yet, establish according to above-mentioned electrical substrate 24 and the group of laser chip 25, single or the several laser chips 25 of installing on one electrical substrate 24, compared with prior art its advantage is, the group of single laser chip 25 is established the temperature that can stablize in its running, and the group of several laser chips 25 is established the temperature environment that can unify in its running, reaches whereby the uniform effect of same heat radiation and elimination temperature fall to each other, and saves the cost on luminescence component 2;
Separately be equiped with again a control device 14 on this body 1, and this control device 14 is electrically connected with luminescence component 2, and control laser chip 25 in luminescence component 2 bright, go out, whereby, can control required radiation modality according to user's demand, see also Fig. 1 to shown in Figure 2, and take Fig. 3 and Fig. 4 as auxiliary.
Again for the outer light path 21 that luminescence component 2 of the present utility model irradiates can really by 11 transmissions of transmission lock road, be gone out, and interior light path 22 reflexes to and receives lock road 12 and proofreaied and correct by proofreading and correct lock road 13, therefore, this inside and outside light path 22,21 formed angle spaces 23 are the angle of 2 degree～180 degree,, to avoid inside and outside light path 22,21 interferences and to cause error amount, see also shown in Figure 2.
1. see also shown in Figure 2ly, the reflecting part in this correction lock road 13 131 is for having smooth surface;
2. see also shown in Figure 5, the reflecting part 131 in this correction lock road 13 is coarse reflecting surface (the utility model reflecting part 131 of proofreading and correct lock road 13 can be reflected into have at surface-coated can be with the optics optical material of light reflection, to reach better reflection effect);
3. see also shown in Figure 6, reflecting part 131 in this correction lock road 13 is provided with a reflector plate 5, in being somebody's turn to do, the light of light path 22 exposes on reflector plate 5 after entering and proofreading and correct lock road 13, then by the angle ornaments of reflector plate 5, exposes on optical filter 4, enters finally optical receiver 3 and is calculated.
4. see also shown in Figure 7, except by above-mentioned several reflection modes, separately can be equiped with an optic fibre wire 6 in body 1, and this optic fibre wire is passed in correction lock road 13 by transmission lock road 11, be connected to again and receive lock road 12, in being somebody's turn to do, light path 22 enters and conducts to reception lock road 12 by an end of optic fibre wire 6, makes interior light path 22 shine optical filter 4, enters finally optical receiver 3 again and is calculated.
5. see also Fig. 1 and shown in Figure 9, the utility model be provided with in receiving lock road 12 optical filter 4 reflect or filters in the irradiation of light path 22, in this, light path 22, then is shone and is calculated towards optical receiver 3 after its light filtration or reflecting by optical filter 4.
6. see also shown in Figure 10, the utility model can be adjusted with the height of luminescence component 2 proofreading and correct lock road 13, the height of luminescence component 2 is improved, and the height reduction of proofreading and correct lock road 13 makes the interior light path 22 of luminescence component 2 can directly pass correction lock road 13 and expose to optical receiver 3.
after relation according to above-mentioned illustrated each inter-module, see also shown in Figure 8, in the design of this laser chip 25, laser range finder on prior art was with plural monomer lasing light emitter irradiation in the past, but, each laser light is required temperature environment in a steady stream, temperature of distributing from body etc. is neither identical, easily cause interference to each other, and then cause the problems such as miscalculation, therefore, the utility model further separately is provided with a catch 7 on luminescence component 2 arranging of luminescence component 2, it is the path that separates interior light path 22 and outer light path 21, in avoiding, outer light path 22, (the utility model the 4th embodiment illustrates another kind of better enforcement state in 21 phase mutual interference, not in order to limit the kenel of technical characteristics).
The above, it is only preferred embodiment of the present utility model, not the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model, to any simple modification, equivalent variations and modification that above embodiment does, all still belongs in the scope of technical solutions of the utility model.
Claims (9)
1. the light channel structure of a laser ranging, is characterized in that, include a body and be mounted on a luminescence component of internal body, wherein:
Be provided with a transmission lock road and in this body and receive the lock road, and separately be provided with a connection transmission lock road and the correction lock road that receives the lock road in this body;
This luminescence component is mounted in transmission lock road, and luminescence component emission two road light beams, it is an interior light path and an outer light path, be somebody's turn to do outer optical routing transmission lock road transmission and go out, should interior light path via proofreading and correct the lock road, be passed to reception lock road, be somebody's turn to do again between outer light path and interior light path and form tool one angle space, separately be provided with an optical receiver in receiving the lock road.
2. the light channel structure of laser ranging according to claim 1, it is characterized in that, described luminescence component further includes an electrical substrate and a laser chip, and this laser chip and electrical substrate are electrically connected, and this outer light path and the irradiation of interior optical routing laser chip appear.
3. the light channel structure of laser ranging according to claim 1, it is characterized in that, described luminescence component further includes an electrical substrate and several laser chip, and this laser chip and electrical substrate are electrically connected, and the several laser chips irradiations of this outer light path and interior optical routing appear.
4. the light channel structure of laser ranging according to claim 3, is characterized in that, further separately is provided with a control device that is electrically connected with luminescence component on this body, and this control device is controlled the quantity of the light on and off of several laser chips.
5. the light channel structure of described laser ranging of according to claim 1 to 4, is characterized in that, it is 2 degree～180 degree that described outer light path and interior optical routing luminescence component irradiate formed angle space.
6. the light channel structure of laser ranging according to claim 1, is characterized in that, described correction lock road further has a reflecting part, and in this reflecting part reflection, light path is to the optical receiver that receives the lock road.
7. the light channel structure of laser ranging according to claim 6, is characterized in that, the reflecting part in described correction lock road further separately is provided with a reflector plate, and this reflector plate is reflection water chestnut mirror or total reflection sheet.
8. the light channel structure of laser ranging according to claim 1, is characterized in that, further separately is provided with an optic fibre wire in this correction lock road, and this optic fibre wire is communicated to the optical receiver that receives the lock road through overcorrect lock road by transmission lock road.
9. the light channel structure of laser ranging according to claim 1, is characterized in that, further separately is provided with an optical filter in this reception lock road, light path in this optical filter reflection or filtration, and towards the optical receiver irradiation that receives the lock road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200158980U CN203287522U (en) | 2013-01-14 | 2013-01-14 | Light path structure for laser ranging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200158980U CN203287522U (en) | 2013-01-14 | 2013-01-14 | Light path structure for laser ranging |
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| CN203287522U true CN203287522U (en) | 2013-11-13 |
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| CN2013200158980U Expired - Fee Related CN203287522U (en) | 2013-01-14 | 2013-01-14 | Light path structure for laser ranging |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107532944A (en) * | 2015-03-12 | 2018-01-02 | 马克西姆综合产品公司 | For the equipment and method of the temperature correction that proximity sensor is used in contactless thermoelectric pile thermometer |
| WO2019047340A1 (en) * | 2017-09-08 | 2019-03-14 | 北醒（北京）光子科技有限公司 | Optical distance measurement device |
| US11199454B2 (en) | 2015-03-12 | 2021-12-14 | Maxim Integrated Products, Inc. | Heat imaging thermophile device and method |
| CN114355373A (en) * | 2022-03-14 | 2022-04-15 | 成都量芯集成科技有限公司 | Laser distance measuring device |
-
2013
- 2013-01-14 CN CN2013200158980U patent/CN203287522U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107532944A (en) * | 2015-03-12 | 2018-01-02 | 马克西姆综合产品公司 | For the equipment and method of the temperature correction that proximity sensor is used in contactless thermoelectric pile thermometer |
| US11067452B1 (en) * | 2015-03-12 | 2021-07-20 | Maxim Integrated Products, Inc. | Device and method for temperature correction using a proximity sensor in a non-contact thermopile thermometer |
| US11199454B2 (en) | 2015-03-12 | 2021-12-14 | Maxim Integrated Products, Inc. | Heat imaging thermophile device and method |
| WO2019047340A1 (en) * | 2017-09-08 | 2019-03-14 | 北醒（北京）光子科技有限公司 | Optical distance measurement device |
| CN114355373A (en) * | 2022-03-14 | 2022-04-15 | 成都量芯集成科技有限公司 | Laser distance measuring device |
| CN114355373B (en) * | 2022-03-14 | 2022-06-14 | 成都量芯集成科技有限公司 | Laser distance measuring device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20190114 |