CN208705571U - Infrared laser light source with distance measurement function - Google Patents
Infrared laser light source with distance measurement function Download PDFInfo
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- CN208705571U CN208705571U CN201721153712.2U CN201721153712U CN208705571U CN 208705571 U CN208705571 U CN 208705571U CN 201721153712 U CN201721153712 U CN 201721153712U CN 208705571 U CN208705571 U CN 208705571U
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- lens
- light source
- laser
- distance measurement
- measurement function
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Abstract
The utility model discloses a kind of infrared laser light sources with distance measurement function, including laser, the laser direction of the launch is arranged at intervals with a diversing lens, the laser is located on the optical axis of diversing lens, it further include a receiving lens, the optical axis of the receiving lens and the optical axis of diversing lens are arranged in parallel, and a photodetector is provided on the optical axis of the receiving lens.The utility model has the function of while having the advantages that laser lighting and object ranging.
Description
Technical field
The utility model relates to Optical devices, there is laser lighting and object ranging function simultaneously more particularly, to a kind of
Infrared laser light source with distance measurement function.
Background technique
In active night vision technology, infrared laser is because its operating distance is remote, brightness is high and the advantages such as good energy saving property are being pacified
In anti-video monitoring using increasing.However other than above-mentioned advantage, infrared laser, which has been also equipped with, to be easy to modulate, reaction
The advantages such as fast speed, wherein can accomplish by the smallest pulse width of edge-emitting semiconductor laser specially designed
20ns, and large-power semiconductor VCSEL array laser can even receive G hertz of modulation, but monitor in security protection video
In want ranging sometimes, this will increase other range unit to carry out ranging, thus will increase security product cost and
Volume.
Utility model content
To solve the above problems, the utility model aim is to provide a kind of while having laser lighting and object ranging function
The infrared laser light source with distance measurement function of energy.
The utility model realized by following technical measures, a kind of infrared laser light source with distance measurement function, including
Laser, the laser direction of the launch are arranged at intervals with a diversing lens, and the laser is located on the optical axis of diversing lens,
It further include a receiving lens, the optical axis of the receiving lens and the optical axis of diversing lens are arranged in parallel, the light of the receiving lens
A photodetector is provided on axis.
The photodetector is located in the focus of receiving lens as a preferred method,.
The receiving lens and diversing lens are all condenser lens as a preferred method,.
The receiving lens and diversing lens are all convex lens as a preferred method,.
The laser is edge-emitting lasers as a preferred method,.
The edge-emitting lasers are VCSEL laser as a preferred method,.
The photodetector is semiconductor photo diode or avalanche photodide as a preferred method,.
The laser is zoom laser as a preferred method, and the photodetector is array optical electrical resistivity survey
Survey device.
A part of the utility model completes laser lighting function and ranging emission function by laser and diversing lens；Separately
The optical axis of the ranging receiving module that a part is made of receiving lens and photodetector, receiving lens and diversing lens is complete
Complete parallel, the laser for completing the object reflection of infrared laser target's center visual field is collected and detecting function.The utility model
Has the function of laser lighting and object ranging simultaneously.The utility model is in the cost and body for not increasing current security product substantially
Under product, so that the spherical camera and holder of security protection are all integrated with distance measurement function, there is huge reality to the application of actual product
Meaning.
Detailed description of the invention
Fig. 1 is the light path schematic diagram of the utility model embodiment.
Specific embodiment
Below with reference to embodiment and compares attached drawing the utility model is described in further detail.
A kind of infrared laser light source with distance measurement function of the present embodiment please refers to attached drawing 1, including laser 1, described
1 direction of the launch of laser is arranged at intervals with a diversing lens 2, and the laser 1 is located on the optical axis of diversing lens 2, further includes
The optical axis of one receiving lens 4, the optical axis and diversing lens 2 of the receiving lens 4 is arranged in parallel, the optical axis of the receiving lens 4
On be provided with a photodetector 3.
Fig. 1 is that the optical path of this infrared laser light source is illustrated, and completes laser by laser 1 and diversing lens 2 in top half
Illumination functions and ranging emission function；The ranging receiving module that lower half portion is made of receiving lens 4 and photodetector 3,
The optical axis of its receiving lens 4 and diversing lens 2 is substantially parallel, and completes the object reflection of 1 target's center's visual field of infrared laser
Laser collect and detecting function.This infrared laser light source has the function of laser lighting and object ranging simultaneously.This infrared laser
Light source is not in the case where increasing the cost and volume of current security product substantially, so that the spherical camera and holder of security protection are all integrated
There is distance measurement function, has huge realistic meaning to the application of actual product.
In the embodiment of an infrared laser light source with distance measurement function, attached drawing 1 is please referred to, in front the base of technical solution
Specifically it is also possible that photodetector 3 is located in the focus of receiving lens 4 on plinth.
In the embodiment of an infrared laser light source with distance measurement function, attached drawing 1 is please referred to, in front the base of technical solution
It is specifically also possible that receiving lens 4 and diversing lens 2 are all condenser lens on plinth, is in the present embodiment all convex lens.
In the embodiment of an infrared laser light source with distance measurement function, attached drawing 1 is please referred to, in front the base of technical solution
Specifically it is also possible that laser 1 is that can be edge-emitting lasers especially to select powerful VCSEL laser on plinth.
In the embodiment of an infrared laser light source with distance measurement function, attached drawing 1 is please referred to, in front the base of technical solution
Specifically it is also possible that photodetector 3 is semiconductor photo diode or avalanche photodide (APD) on plinth.
In the embodiment of an infrared laser light source with distance measurement function, specifically may be used also on the basis of technical solution in front
To be, if laser uses zoom laser, and photodetector is using the array devices such as photodiode array, can be with
Realize that not needing filters center alignment target object can be complete to the function of object different in laser lamp visual field ranging simultaneously
At ranging, so that the flexibility ratio of ranging greatly increases.
It is to be expounded to the utility model with the infrared laser light source of distance measurement function above, is used to help understand this
Utility model, but the embodiments of the present invention and be not restricted to the described embodiments, it is any without departing from the utility model original
Changes, modifications, substitutions, combinations, simplifications made by reason is lower, should be equivalent substitute mode, are included in the utility model
Protection scope it is interior.
Claims (7)
1. a kind of infrared laser light source with distance measurement function, it is characterised in that: including laser, the laser direction of the launch
A diversing lens are arranged at intervals with, the laser is located on the optical axis of diversing lens, further includes a receiving lens, the reception
The optical axis of lens and the optical axis of diversing lens are arranged in parallel, and a photodetector is provided on the optical axis of the receiving lens；Institute
Photodetector is stated to be located in the focus of receiving lens.
2. the infrared laser light source according to claim 1 with distance measurement function, it is characterised in that: the receiving lens and
Diversing lens are all condenser lens.
3. the infrared laser light source according to claim 1 with distance measurement function, it is characterised in that: the receiving lens and
Diversing lens are all convex lens.
4. the infrared laser light source according to claim 1 with distance measurement function, it is characterised in that: the laser is side
Emission type laser.
5. the infrared laser light source according to claim 4 with distance measurement function, it is characterised in that: the edge transmitting type swashs
Light device is VCSEL laser.
6. the infrared laser light source according to claim 1 with distance measurement function, it is characterised in that: the photodetector
For semiconductor photo diode or avalanche photodide.
7. the infrared laser light source according to claim 1 with distance measurement function, it is characterised in that: the laser is to become
Burnt laser, the photodetector are array optical electric detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153712.2U CN208705571U (en) | 2017-09-08 | 2017-09-08 | Infrared laser light source with distance measurement function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153712.2U CN208705571U (en) | 2017-09-08 | 2017-09-08 | Infrared laser light source with distance measurement function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208705571U true CN208705571U (en) | 2019-04-05 |
Family
ID=65911370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721153712.2U Active CN208705571U (en) | 2017-09-08 | 2017-09-08 | Infrared laser light source with distance measurement function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208705571U (en) |
-
2017
- 2017-09-08 CN CN201721153712.2U patent/CN208705571U/en active Active
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