CN209656895U - A kind of laser radar detection device based on microlens array - Google Patents
A kind of laser radar detection device based on microlens array Download PDFInfo
- Publication number
- CN209656895U CN209656895U CN201822016231.8U CN201822016231U CN209656895U CN 209656895 U CN209656895 U CN 209656895U CN 201822016231 U CN201822016231 U CN 201822016231U CN 209656895 U CN209656895 U CN 209656895U
- Authority
- CN
- China
- Prior art keywords
- array
- microlens array
- photodiode
- laser radar
- detection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 230000005611 electricity Effects 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005622 photoelectricity Effects 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The utility model discloses a kind of laser radar detection device based on microlens array, the device include: receiving lens group, narrow band filter, microlens array, photodiode array, multichannel across resistance operational amplifier, high-speed AD converter.The receiving lens group, for receiving target reflection laser.The narrow band filter, filters out for stray light.The microlens array, for laser to be converged to the photosurface of photodiode array.The photodiode array, for realizing photoelectric conversion.The multichannel is across resistance operational amplifier, for above-mentioned photo-signal to be converted into voltage signal.The utility model is used in combination by microlens array and photodiode array, is realized that the light for being incident on receiving lens group can converge on the photosurface of photodiode, to avoid the detection blank in neighboring photosensitive face, is avoided the waste of laser signal energy.
Description
Technical field
The utility model relates to laser radar technique fields, and in particular to a kind of control dress of multi-path laser detecting module
It sets.
Background technique
Laser radar is received the echo optical signal of laser and is handled to realize and obtain by laser transmitter projects laser
Take the parameter information of target.Multi-line laser radar is one kind of laser radar, and bigger field angle may be implemented in multi-line laser radar
Scanning, to realize three-dimensional ranging.
In the prior art, single cylindrical mirror cooperation photodiode array is mostly used to realize the scanning of multi-thread, big field angle,
But such mode will appear the case where hot spot falls in diode array photosurface gap, so as to cause energy loss and cause to measure
Error.
But cooperate the method for photodiode it is possible to prevente effectively from incident laser beam converges to by microlens array
The gap of photodiode array effectively reduces the loss of light energy.It furthermore, can be with using multichannel across resistance operational amplifier
It avoids evading the caused delay effect of gating across resistance operational amplifier and multi-channel gating device structure using multiple single channels
While, the system of simplifying designs and has saved system resource.
Utility model content
For the defects in the prior art, on the one hand, another the utility model proposes a kind of laser radar detection device
Aspect, the utility model also proposed a kind of laser radar comprising above-mentioned detection device.
To achieve the above object, the utility model the following technical schemes are provided:
A kind of laser radar detection device based on microlens array includes receiving lens group, narrow band filter, lenticule
Array, photodiode array, multichannel are across resistance operational amplifier and high-speed A/D converter；
The receiving lens group, is placed in the front end of detection device, for receiving the reflected beams, realizes that light beam is assembled；
The narrow band filter is placed in receiving lens group rear end, for receive assemble after light beam, filter out central wavelength with
Outer stray light；
The microlens array is placed in narrow band filter rear end, for being assembled again to light beam；
The photodiode array is placed in microlens array rear end, for receiving laser signal, exports electric signal；
The multichannel is across resistance operational amplifier, comprising having putting across resistance operation for 2 or 2 or more independent input channels
The output end of big circuit, each input channel and photodiode array connects one to one, for converting photo-signal
At voltage signal.
The high-speed A/D converter, input terminal and multichannel are correspondingly connected with across the output end of resistance operational amplifier.
A kind of laser radar detection device, it is characterised in that: the microlens array is passed through by multiple independent lenticules
Linear array or face battle array arrangement mode are arranged to make up.
A kind of laser radar detection device, it is characterised in that: the photodiode array is by multiple independent photoelectricity two
Pole pipe is arranged to make up by linear array or face battle array arrangement mode.
A kind of laser radar detection device based on microlens array, its main feature is that selection microlens array and two pole of photoelectricity
Pipe array is used in combination, and realizes that the light for being incident on receiving lens group can converge on the photosurface of photodiode, to keep away
The detection blank for opening neighboring photosensitive face, avoids the waste of laser signal energy.
A kind of laser radar detection device based on microlens array, it is characterized in that selection photodiode and multichannel
It is used in combination across resistance operational amplifier, the multi-channel high-speed for realizing laser signal to current signal is converted, and is avoided using multichannel
The waste of delay effect and device resource brought by gate.
Detailed description of the invention
Fig. 1 is a kind of work of laser radar detection method based on microlens array of the utility model one embodiment
Flow chart.101. receiving lens group, 102. narrow band filter, 103. microlens array, 104. photodiode array 105. in Fig. 1
Multichannel is across resistance 106. high speed analog-to-digital conversion of operational amplifier.
Fig. 2 is that microlens array 103 cooperates photodiode battle array in the utility model one embodiment.
Fig. 3 is the operation schematic diagram of photodiode array 104 in the utility model one embodiment.
Fig. 4 is the operation schematic diagram of photodiode array 104 in the utility model one embodiment.
Fig. 5 is the operation schematic diagram of photodiode cooperation amplifier 105 in the utility model one embodiment.
Specific embodiment
As shown in Figure 1, a kind of laser radar detection method based on microlens array of the utility model embodiment includes
Lens group 101, optical filter 102, microlens array 103, photodiode array 104, amplifier 105, analog-digital converter 106.
Wherein lens group 101 and optical filter 102 are used to complete the convergence and optical filtering to laser signal.Microlens array 103 is realized to sharp
The secondary convergence of optical signal, it is ensured that hot spot is fallen on the photosurface of photodiode array 104.Photodiode array 104 is used
In laser signal is converted into photo-signal, and export.Amplifier 105 is used to photo-signal being converted into voltage signal,
And it exports.Analog-digital converter 106 is used for voltage signal acquisition, and is converted into digital signal.
As shown in Fig. 2, this cooperates the work of photodiode array 104 for microlens array 103 in the utility model embodiment
Schematic diagram, including microlens array 103 and photodiode array 104.Laser beam through overconvergence is incident on lenticule battle array
On column 103, if laser beam can be received completely by a complete lenticule array element, after its secondary convergence, out
Irradiating light beam can converge in photodiode array 104 on corresponding photosurface, as shown in Figure 3 completely.If passing through meeting
Poly- laser beam cannot be received by a complete lenticule array element, but be received by two adjacent lenticule array elements, that
After its secondary convergence, outgoing beam is divided into two-beam, and it is respectively right in photodiode array 104 to converge to respectively
On the photosurface answered, as shown in Figure 4.
In such a way that microlens array 103 cooperates photodiode array 104, it is possible to prevente effectively from incident beam is understood
The gap for gathering photodiode array 104 avoids the detection blank of detector array, reduces the loss of light energy.
The multichannel photo-signal of photodiode output, connects one to one with the input stage of amplifier 105, such as Fig. 5
It is shown.The photo-signal of different moments is converted into voltage letter by the framework that time-sharing multiplex is used inside amplifier 105 respectively
Number, and it is coupled to same output end.
Photodiode cooperate amplifier 105 by way of, can to avoid use multi-channel gating device to multichannel photoelectric current
Signal carries out repeating to gate the anxiety of brought delay effect and configuration resource.Meanwhile the use of amplifier 105, it can
To avoid multiple single channels are used, across resistance operational amplifier, simplification avoids the redundancy and waste of device while design.
In the specification of the utility model, numerous specific details are set forth.Although it is understood that the utility model
Embodiment can be practiced without these specific details.In some instances, be not been shown in detail well known method,
Structure and technology, so as not to obscure the understanding of this specification.Similarly, it should be understood that disclosed to simplify the utility model
And it helps to understand one or more of each utility model aspect, the retouching to the exemplary embodiment of the utility model above
In stating, each feature of the utility model is grouped together into a single embodiment, figure, or description thereof sometimes.However,
The method of the disclosure should not be explained to be in reflect an intention that the requires of the utility model ratio i.e. claimed in each power
The more features of feature being expressly recited in benefit requirement.More precisely, as the following claims reflect, it is practical new
It is all features less than single embodiment disclosed above in terms of type.Therefore, it then follows the claim of specific embodiment
Thus book is expressly incorporated in the specific embodiment, wherein independent implementation of each claim as the utility model itself
Example.It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can be mutual group
It closes.The utility model is not limited to any single aspect, is also not limited to any single embodiment, is also not limited to this
Any combination and/or displacement of a little aspects and/or embodiment.Furthermore, it is possible to be used alone the utility model each aspect and/
Or embodiment or with it is one or more other aspect and/or embodiment be used in combination.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Claims (4)
1. a kind of laser radar detection device based on microlens array, it is characterised in that: include receiving lens group, narrow-band-filter
Piece, microlens array, photodiode array, multichannel are across resistance operational amplifier；
The receiving lens group, is placed in the front end of detection device, for receiving the reflected beams, realizes that light beam is assembled；
The narrow band filter is placed in receiving lens group rear end, for receiving the light beam after assembling, filters out other than central wavelength
Stray light；
The microlens array is placed in narrow band filter rear end, for being assembled again to light beam；
The photodiode array is placed in microlens array rear end, for receiving laser signal, exports electric signal；
The multichannel is across resistance operational amplifier, comprising having the electric across resistance operation amplifier of 2 or 2 or more independent input channels
The output end of road, each input channel and photodiode array connects one to one, for photo-signal to be converted to electricity
Press signal.
2. laser radar detection device according to claim 1, it is characterised in that: the microlens array is by multiple independences
Lenticule by linear array or face battle array arrangement mode be arranged to make up.
3. laser radar detection device according to claim 1, it is characterised in that: the photodiode array is by multiple
Independent photodiode is arranged to make up by linear array or face battle array arrangement mode.
4. a kind of laser radar, which is characterized in that include laser radar detection device described in claim 1-3 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822016231.8U CN209656895U (en) | 2018-12-03 | 2018-12-03 | A kind of laser radar detection device based on microlens array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822016231.8U CN209656895U (en) | 2018-12-03 | 2018-12-03 | A kind of laser radar detection device based on microlens array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209656895U true CN209656895U (en) | 2019-11-19 |
Family
ID=68517466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822016231.8U Active CN209656895U (en) | 2018-12-03 | 2018-12-03 | A kind of laser radar detection device based on microlens array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209656895U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780283A (en) * | 2019-11-22 | 2020-02-11 | 上海禾赛光电科技有限公司 | Receiving system, laser radar comprising same and echo receiving method |
| CN111257896A (en) * | 2020-05-06 | 2020-06-09 | 中国电子科技集团公司信息科学研究院 | Gated array lidar receiving optical system and lidar |
| CN113702948A (en) * | 2021-08-09 | 2021-11-26 | 北京一径科技有限公司 | Transimpedance amplifier array, light receiving device and laser radar receiver |
-
2018
- 2018-12-03 CN CN201822016231.8U patent/CN209656895U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780283A (en) * | 2019-11-22 | 2020-02-11 | 上海禾赛光电科技有限公司 | Receiving system, laser radar comprising same and echo receiving method |
| CN110780283B (en) * | 2019-11-22 | 2021-01-26 | 上海禾赛光电科技有限公司 | Receiving system, laser radar comprising same and echo receiving method |
| CN111257896A (en) * | 2020-05-06 | 2020-06-09 | 中国电子科技集团公司信息科学研究院 | Gated array lidar receiving optical system and lidar |
| CN113702948A (en) * | 2021-08-09 | 2021-11-26 | 北京一径科技有限公司 | Transimpedance amplifier array, light receiving device and laser radar receiver |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209656895U (en) | A kind of laser radar detection device based on microlens array | |
| CN107422336B (en) | Variable-resolution non-scanning streak tube laser imaging system with large field of view and large depth of field | |
| EP2136409A1 (en) | Concentration photovoltaic cell system with light guide | |
| WO2018076425A1 (en) | Dense wavelength division multiplexing optical transceiver assembly based on pon system | |
| CN101806987B (en) | Focus detecting and controlling device of aerial camera | |
| CN207601363U (en) | A kind of WDM optical component | |
| CN109030438A (en) | A kind of optical path mould group for multi-wavelength fluorescence detection | |
| CN104486002B (en) | Wavelength division multiplexing receiving system for wireless optical communication | |
| CN111123436A (en) | Color light wavelength division multiplexing module for 5G application and assembling method thereof | |
| WO2022021747A1 (en) | Optical signal detection system | |
| CN208351108U (en) | Wide-angle LED illumination fusion MIMO visible light communication receives optical antenna | |
| CN210690807U (en) | Laser radar receiving system | |
| JPS58121668A (en) | Multiple color image sensor | |
| US20090320901A1 (en) | Concentration photovoltaic cell system with light guide | |
| CN110764233A (en) | Novel laser radar receiving lens | |
| CN112887030B (en) | Optical signal transmission system and method for rotary joint | |
| CN110967793B (en) | Optical module | |
| CN105467536B (en) | A kind of light-receiving component | |
| CN216485489U (en) | Coupling device for photoelectric conversion and laser radar | |
| CN218445970U (en) | Multichannel photoelectric coupling system, laser radar system and carrier system | |
| CN213023616U (en) | Integrated optical detection device | |
| CN219758545U (en) | Tunable optical filter and optical performance monitoring module | |
| CN210665464U (en) | Photoelectric detection system of biochemical analyzer and photoelectric detection box of biochemical analyzer | |
| CN210626315U (en) | Spectrum detection device | |
| RU2782236C1 (en) | Photoelectric receiving device of optical communication line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231205 Address after: 430200, 7th floor, Building 3, Phase II, Modern Service Industry Demonstration Base, Huazhong University of Science and Technology Science Park, Guandong Street, Wuhan Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Wanji Photoelectric Technology Co.,Ltd. Address before: Wanji space, building 12, Zhongguancun Software Park, yard 8, Dongbei Wangxi Road, Haidian District, Beijing 100193 Patentee before: BEIJING WANJI TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |