CN202770436U - Laser range finder - Google Patents
Laser range finder Download PDFInfo
- Publication number
- CN202770436U CN202770436U CN201220445116.2U CN201220445116U CN202770436U CN 202770436 U CN202770436 U CN 202770436U CN 201220445116 U CN201220445116 U CN 201220445116U CN 202770436 U CN202770436 U CN 202770436U
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- lens
- range finder
- laser range
- cylindrical
- light emitter
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Abstract
The utility model relates to a laser range finder which comprises a laser source, a lens group and a cylindrical lens. The lens group is placed between the laser source and the cylindrical lens. Preferentially, the lens group comprises a plurality of lenses which are arranged at intervals and in parallel along a principal optical axis. The cylindrical lens can be a cylindrical concave lens or a cylindrical convex lens according to convenient design. According to the laser range finder, the design is ingenious, the structure is concise, not only the speed and the type of a vehicle in a designated lane can be detected accurately, but also the monitoring area is wide, and the whole lane can be covered, accordingly, information acquisition leakage situations cannot be produced, and the laser range finder is applicable to large-scale popularization and application.
Description
Technical field
The utility model relates to field of optical measuring technologies, and particularly the laser measuring technique field specifically refers to a kind of laser range finder.
Background technology
Laser is strong with its collimation, optical power density concentrate to wait many advantages in optical measurement in occupation of consequence.The characteristics that the laser range finder collimation is strong are so that it can detect transport information (speed of a motor vehicle of the vehicle of aiming, spacing) selectively in numerous and diverse wagon flow road conditions.But existing laser range finder is because the straightforward strong characteristics of laser quasi, thereby its light beam generally all narrow (＜3mrad), this has also caused the zone of monitoring of laser range finder more limited, can't cover whole track and can produce information acquisition and omit situation.As shown in Figure 1, the optical system of traditional laser range finder generally is comprised of lasing light emitter 1 and lens combination 2, and the laser that lasing light emitter 1 sends is narrower through the light beam that lens combination 2 produces, and its hot spot 3 all is circular generally.
Therefore, have the laser range finder of angle pencil of ray, can not only correctly detect the speed of a motor vehicle and the vehicle of a certain vehicle in the specific lane, and the monitored area is wide, can cover whole track and can not produce information acquisition and omit situation.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, a kind of laser range finder is provided, this laser range finder design is ingenious, simple for structure, can not only correctly detect the speed of a motor vehicle and the vehicle of a certain vehicle in the specific lane, and the monitored area is wide, can not produce information acquisition omission situation thereby can cover whole track, is suitable for large-scale promotion application.
To achieve these goals, laser range finder of the present utility model comprises lasing light emitter and lens combination, is characterized in, described laser range finder also comprises cylindrical lens, and described lens combination is between described lasing light emitter and described cylindrical lens.
Preferably, described lens combination comprises some lens, and described lens are arranged along the primary optical axis spaced and parallel.
More preferably, described lens are selected from one or both of convex lens and concavees lens.
Preferably, described cylindrical lens is cylindrical concave lens, and the concave surface of described cylindrical concave lens is towards described lasing light emitter or described lasing light emitter dorsad.
Preferably, described cylindrical lens is cylindrical convex lens, and the convex surface of described cylindrical convex lens is towards described lasing light emitter or described lasing light emitter dorsad.
The beneficial effects of the utility model specifically are: laser range finder of the present utility model comprises lasing light emitter, lens combination and cylindrical lens, described lens combination is between described lasing light emitter and described cylindrical lens, thereby by introducing cylindrical lens, on the horizontal direction perpendicular to primary optical axis, laser beam is expanded effectively, thereby the hot spot that this optical system produces is similar to rectangle, just cover whole track, design ingenious, simple for structure, can not only correctly detect the speed of a motor vehicle and the vehicle of a certain vehicle in the specific lane, and the monitored area is wide, thereby can cover whole track and can not produce information acquisition omission situation, be suitable for large-scale promotion application.
Description of drawings
Fig. 1 is the light path schematic diagram of the optical system of traditional laser range finder.
Fig. 2 is the light path schematic diagram of a specific embodiment of the optical system of laser range finder of the present utility model.
Embodiment
In order more clearly to understand technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 2ly, laser range finder of the present utility model comprises lasing light emitter 1, lens combination 2 and cylindrical lens 4, and described lens combination 2 is between described lasing light emitter 1 and described cylindrical lens 4.
Described lens combination 2 can adopt any suitable structure, can adopt the lens group structure of existing laser range finder, and preferably, described lens combination 2 comprises some lens, and described lens are arranged along the primary optical axis spaced and parallel.See also shown in Figure 2ly, in specific embodiment of the utility model, described lens combination 2 comprises 2 lens.
Described lens can be selected from one or both of convex lens and concavees lens, see also shown in Figure 2ly, and in specific embodiment of the utility model, described lens are selected from two kinds of convex lens and concavees lens.
Described cylindrical lens 4 can have any suitable structure, and preferably, described cylindrical lens 4 is cylindrical concave lens, and the concave surface of described cylindrical concave lens is towards described lasing light emitter 1 or described lasing light emitter 1 dorsad.See also shown in Figure 2ly, in specific embodiment of the utility model, the concave surface of described cylindrical concave lens is described lasing light emitter 1 dorsad.
Described cylindrical lens 4 also can be cylindrical convex lens, and the convex surface of described cylindrical convex lens is towards described lasing light emitter 1 or described lasing light emitter 1 dorsad.
Will be in day by day busy traffic, gather the basic transport information such as the speed of a motor vehicle, vehicle and vehicle flowrate, just need certain technological means, can correctly detect the vehicle flowrate in the speed of a motor vehicle, vehicle and this track of a certain vehicle in the specific lane, be not subjected to again the impact of peripheral lane flow.
In the combination of optical system of the present utility model, except lens combination 2 is arranged, also increased cylindrical lens 4.Its effect is exactly on the horizontal direction perpendicular to primary optical axis, and laser beam is expanded effectively.Thereby the hot spot 5 that this optical system produces is similar to rectangle, just covers whole track.
The utlity model has the strong advantage of the good antijamming capability of conventional laser stadimeter directive property, overcome simultaneously the little shortcoming in the narrower overlay area of conventional laser stadimeter light beam.Light beam of the present utility model just in time covers whole track.So it can correctly gather without omitting the transport information such as the speed of a motor vehicle, vehicle and vehicle flowrate in the specific lane.Simultaneously can calculate the vehicle peccancy lane change by in conjunction with the daemon software algorithm, non-public transit vehicle is rushed the information such as capable public transportation lane.
To sum up, laser range finder design of the present utility model is ingenious, simple for structure, can not only correctly detect the speed of a motor vehicle and the vehicle of a certain vehicle in the specific lane, and the monitored area is wide, can not produce information acquisition omission situation thereby can cover whole track, is suitable for large-scale promotion application.
In this instructions, the utility model is described with reference to its specific embodiment.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (5)
1. a laser range finder comprises lasing light emitter and lens combination, it is characterized in that, described laser range finder also comprises cylindrical lens, and described lens combination is between described lasing light emitter and described cylindrical lens.
2. laser range finder according to claim 1 is characterized in that, described lens combination comprises some lens, and described lens are arranged along the primary optical axis spaced and parallel.
3. laser range finder according to claim 2 is characterized in that, described lens are selected from one or both of convex lens and concavees lens.
4. laser range finder according to claim 1 is characterized in that, described cylindrical lens is cylindrical concave lens, and the concave surface of described cylindrical concave lens is towards described lasing light emitter or described lasing light emitter dorsad.
5. laser range finder according to claim 1 is characterized in that, described cylindrical lens is cylindrical convex lens, and the convex surface of described cylindrical convex lens is towards described lasing light emitter or described lasing light emitter dorsad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220445116.2U CN202770436U (en) | 2012-09-03 | 2012-09-03 | Laser range finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220445116.2U CN202770436U (en) | 2012-09-03 | 2012-09-03 | Laser range finder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770436U true CN202770436U (en) | 2013-03-06 |
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ID=47777002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220445116.2U Expired - Lifetime CN202770436U (en) | 2012-09-03 | 2012-09-03 | Laser range finder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035098A (en) * | 2014-06-19 | 2014-09-10 | 仲炳华 | Light-diffusing-type light distance measuring instrument |
| CN106940467A (en) * | 2016-01-05 | 2017-07-11 | 北京雷动云合智能技术有限公司 | A kind of ultra-wide angle strip visual field camera lens for laser ranging system |
-
2012
- 2012-09-03 CN CN201220445116.2U patent/CN202770436U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035098A (en) * | 2014-06-19 | 2014-09-10 | 仲炳华 | Light-diffusing-type light distance measuring instrument |
| CN106940467A (en) * | 2016-01-05 | 2017-07-11 | 北京雷动云合智能技术有限公司 | A kind of ultra-wide angle strip visual field camera lens for laser ranging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |