CN208765704U - Single laser ranging system - Google Patents
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- CN208765704U CN208765704U CN201821444507.6U CN201821444507U CN208765704U CN 208765704 U CN208765704 U CN 208765704U CN 201821444507 U CN201821444507 U CN 201821444507U CN 208765704 U CN208765704 U CN 208765704U
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- 238000005259 measurement Methods 0.000 description 12
- 238000003384 imaging method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
A kind of single laser ranging system disclosed by the utility model includes ranging mechanism and equipment body, equipment body includes host and display, ranging mechanism includes laser emitting elements, partial mirror, camera lens, camera assembly and processing and control module, and laser emitting elements are for issuing single beam；Partial mirror is located at the front of laser emitting elements, and the single beam that partial mirror issues laser emitting elements is transmitted and reflected, and is in parallel dual-beam with form directive measured object；Camera lens is used to receive the reflected light of measured object；Camera assembly is located at the rear of camera lens, and the reflected light of measured object images in camera assembly by the refraction of camera lens；Processing and control module is connect with host, camera assembly and laser emitting elements respectively, and processing and control module controls the opening and closing of laser emitting elements, and is handled image to obtain the distance of measured object and be supplied to display.Single laser ranging system range accuracy of the utility model is high and structure is simple.
Description
Technical field
The utility model relates to range measurement field more particularly to a kind of single laser ranging systems.
Background technique
The measurement of distance is a kind of means for effectively obtaining range data, existing rangefinder be mainly laser range finder and
Ultrasonic range finder, these rangefinders carry out the distance of indirect determination measured object often through the reflection interval of measurement light wave, still,
The time deviation being difficult to avoid that in measurement process may seriously reduce the accuracy of range determination, to be unable to satisfy gauger
Requirement to accuracy.If a certain length of known measured object or area, directly carry out ranging, energy in the way of optical measurement
Overcome and traditionally measure the problems such as existing measurement error is big using the time, however, current rangefinder be unable to satisfy it is existing
Demand.
Therefore, be badly in need of wanting it is a kind of can using the progress optical ranging of the length or area of measured object to improve range accuracy,
And structure simply single laser ranging system overcomes above-mentioned defect.
Utility model content
The purpose of this utility model is to provide it is a kind of can using the progress optical ranging of the length or area of measured object with
Single laser ranging system of range accuracy is improved, and the list laser ranging system structure is simple.
To achieve the goals above, the utility model discloses a kind of single laser ranging systems comprising ranging mechanism and
Equipment body with display, the equipment body include host and display, and the host is described aobvious for controlling and handling
Show that device works, the display for showing data, the ranging mechanism include laser emitting elements, partial mirror, camera lens,
Camera assembly and processing and control module, the laser emitting elements are for issuing single beam；The partial mirror is located at described
The front of laser emitting elements, the single beam that the partial mirror issues the laser emitting elements carry out transmission and anti-
It penetrates, is in parallel dual-beam with form directive measured object；The camera lens is used to receive the reflected light of the measured object；It is described to take the photograph
As component is located at the rear of the camera lens, the reflected light of the measured object images in the camera shooting by the refraction of the camera lens
Component；The processing and control module is connect with the host, camera assembly and laser emitting elements respectively, and the processing controls mould
Block controls the opening and closing of the laser emitting elements, and while opening and closing to laser emitting elements camera shooting group
The image that part is captured is handled to obtain the distance of measured object and be supplied to the display.
Preferably, the partial mirror and laser emitting elements of the utility model are arranged in the side of the camera lens.
Preferably, the camera assembly of the utility model includes CCD device and aperture, the center of the CCD device and aperture
On the primary optical axis of the camera lens.
Preferably, the processing and control module of the utility model is the central processing unit being integrated on the host or number letter
Number processor.
Preferably, the equipment body of the utility model is handheld device main body.
Preferably, the handheld device main body of the utility model is smart phone, tablet computer, smart camera, intelligently takes the photograph
Camera or shooting gun tool.
Compared with prior art, since single laser ranging system of the utility model has camera lens, camera assembly, processing control
Molding block, partial mirror and the laser emitting elements for issuing single beam, partial mirror are located at laser emitting elements
Front, using the transmission effect of partial mirror and reflex, so that laser emitting elements institute directive partial mirror
Single beam be transformed into directive measured object and in parallel dual-beam, the directional light for irradiating thereon is reflexed to mirror by measured object again
Incident reflected light reflect and then measured object is imaged in camera assembly by head, camera lens, and camera assembly will capture laser hair
It penetrates when element is opened and the image of the when of closing, that is, (that is: laser emitting elements open) Ji Wuping when thering is directional light to irradiate measured object
Measured object when row light irradiates measured object when (that is: laser emitting elements are closed) under two states is caught by camera lens by camera assembly
The image caught and be imaged, processing and control module are subtracted each other and are filtered to two images, to obtain in Laser emission member
Part opens the reflective projection of lower measured object, since measured object is remoter apart from camera lens, in the case where lens focus is constant, throws
Penetrate it is just smaller in the projection on camera assembly, using this principle, as long as learning measured object wherein a length or area, processing control
Molding block can pass through the image distance meter between length data or area data and projected image and camera lens corresponding in projected image
Calculation obtains the actual range between object and camera lens, so that ranging is realized, caused by effectively avoiding other from reflecting
Interference so that treated, projected image accuracy is higher, to improve the accuracy of ranging.It can similarly obtain, as long as learning
The spacing or area of dual-beam are formed by by laser emitting elements and partial mirror, i.e. dual-beam is projeced on measured object
Practical spacing or spot areas, processing and control module can by the spacing or area of two luminous point corresponding in projected image,
The actual range between object and camera lens is calculated in image distance between projected image and camera lens indirectly, in other words, both can be with
Measured using the related data of measured object, can also according to circumstances using transmitting dual-beam carry out ranging, strong applicability and
Structure is simple.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model list laser ranging system.
Fig. 2 is the light path schematic diagram that measured object forms projection in Fig. 1.
Specific embodiment
For technology contents, the construction feature, the objects and the effects that the utility model is described in detail, below in conjunction with implementation
Mode simultaneously cooperates attached drawing to be explained in detail.
Refering to Figure 1, single laser ranging system 100 of the utility model is including ranging mechanism 1 and with display
Equipment body 2, equipment body 2 include host 21 and display 22, and host 21 works for control and processing display 22, display
Device 22 includes laser emitting elements 15, partial mirror 14, camera lens 11,12 and of camera assembly for showing data, ranging mechanism 1
Processing and control module 13, for laser emitting elements 15 for issuing single beam, partial mirror 14 is located at laser emitting elements 15
Front, the single beam that partial mirror 14 issues laser emitting elements 15 are transmitted and are reflected, tested to form directive
Object 200 is in parallel dual-beam, so that measured object 200 is under the irradiation of directional light；Camera lens 11 is tested for receiving
The reflected light of object 200 is preferably that the primary optical axis of camera lens 11 and the symmetry axis of dual-beam are parallel, to keep directional light better
It reflects in camera lens 11, and makes camera lens 11 preferably receive directional light and it is reflected, to improve the accuracy of measurement；
Camera assembly 12 is located at the rear of camera lens 11, and the reflected light of measured object 200 images in camera assembly by the refraction of camera lens 11
12；Processing and control module 13 is connect with host 21, camera assembly 12 and laser emitting elements 15 respectively, and processing and control module 13 is controlled
Laser emitting elements 15 processed open or close, and camera assembly 12 is captured when opening and closing to laser emitting elements 15
Image is handled, to obtain the distance of measured object 200 and be supplied to display 22.It is preferably that processing and control module 13 is
The central processing unit or digital signal processor being integrated on host 21, so that the arrangement between each component is more compact.
More specifically, as follows:
Refering to Figure 1, partial mirror 14 and laser emitting elements 15 are arranged in the side of camera lens 11, to obtain
Better imaging effect, and then improve the accuracy of measurement, in this present embodiment, partial mirror 14 and laser emitting elements 15
It is disposed as one, it is in parallel dual-beam that laser emitting elements 15, which are located at the side of partial mirror 14 to be formed, preferably
It is that laser emitting elements 15 are laser diode, certainly, other electronic components can also be replaced as needed, thus it is without being limited thereto.
Refering to Figure 1, camera assembly 12 includes CCD device 121 and aperture 122, CCD device 121 and aperture 122
Center is located on the primary optical axis of camera lens 11, so that the cooperation between each component is more compact, to be more preferably imaged
Effect is to improve the accuracy of measurement.It is preferably that camera lens 11 is convex lens.Certainly, according to actual needs, CCD device 121
It is adjustable to other positions, as long as polarizer is arranged between CCD device 121 and aperture 122 or other optical elements change
The path for reflecting light, so that the arrangement between each component is more compact.
Refering to Figure 1, equipment body 2 is handheld device main body, the utility model is enabled to carry use.
For example, handheld device main body is smart phone, tablet computer, smart camera, intelligent camera or shooting gun have, so that
A part of electronic product needed for the utility model can be used as daily life enriches electronic product function and use scope,
To offer convenience for daily life, work and study, and since 1 self structure of ranging mechanism is relatively simple, ranging mechanism 1
In camera lens 11 and camera assembly 12 be all daily handheld device main body basic electronic component, therefore, when by ranging mechanism 1
When incorporating equipment body 2, so that it may which common sparing electronic component can not only meet consumer to the multi-functional of device in this way
Demand, and meet consumer to device integrally short and small frivolous pursuit.
It please refers to shown in Fig. 1 to Fig. 2, one is made in detail to the working principle of single laser ranging system 100 of the utility model
Illustrate:
After device correction, by the camera lens 11 of single laser ranging system 100 towards measured object 200, firstly, processing and control module
13 control laser emitting elements 15 are closed, and camera assembly 12 captures imaging when laser emitting elements 15 are closed by camera lens 11
The image of image, i.e. measured object 200 imaging in the case where no directional light irradiates；Then, processing and control module 13 controls Laser emission
Element 15 is opened and issues single beam to partial mirror 14, and partial mirror 14 is transmitted and reflected to single beam, thus
It forms directive measured object 200 and is in parallel dual-beam, that is, form the directional light of directive measured object 200, measured object 200 will be parallel
Light reflection, which is incorporated to, injects camera lens 11, and the light for entering to inject camera lens 11 is reflected through camera lens 11, and then measured object 200 is imaged in camera shooting group
Part 12, camera assembly 12 capture the image of imaging when laser emitting elements 15 are opened by camera lens 11, i.e., measured object 200 is flat
Row light irradiates the image of lower imaging, 12 institute of camera assembly when processing and control module 13 is closed and opened to laser emitting elements 15
The front and back two images captured are subtracted each other and are filtered, and can thus eliminate other disturbing factors, and then final
To laser emitting elements 15 unlatching under measured object 200 reflective projection, as shown in Figure 1, in measured object 200 ab two o'clock pair
It should be projected as a`b`, since measured object 200 is remoter apart from camera lens 11, in the case where 11 focal length of camera lens is constant, directional light passes through
The reflection of measured object 200 and image in that the projection on camera assembly 12 is just smaller, i.e. measured object 200 is remoter apart from camera lens 11, instead
The a certain length for penetrating the measured object 200 in projection is shorter, and area is smaller, since camera lens 11 is known at a distance from camera assembly 12
And immobilize, it establishes ab two o'clock in measured object 200 and is formed known to the index path of projection a`b` (such as by the center O of camera lens 11
Shown in Fig. 1), triangle O a`b` and triangle O ab are similar triangles, and the ab length on measured object 200 is it is known that a projected
`b` by measurement it is found that camera lens 11 be with camera assembly 12 at a distance from it is known and for it is changeless (i.e. O point to a`b` it is vertical
Straight distance), therefore, the distance of center O of the ab apart from camera lens 11 in measured object 200 can calculate, i.e. the distance of measured object 200
It can be obtained by calculation.It can be seen that being similar triangles using above-mentioned established triangle O a`b` and triangle O ab
Principle, as long as learning measured object 200 wherein a length or area, processing and control module 13 can be by corresponding in projected image
Length data or area data and the distance between camera assembly 12 and camera lens 11 be calculated measured object 200 and camera lens 11 it
Between actual range, to realize ranging.Similarly, it is formed as long as learning by laser emitting elements 15 and partial mirror 14
Dual-beam spacing or area, i.e. dual-beam is projeced into practical spacing or spot areas on measured object 200, processing control mould
Block 13 can pass through the image distance between the spacing or area and projected image and camera lens 11 of two luminous point corresponding in projected image
The actual range between object and camera lens 11 is calculated, to realize ranging.
For the acquisition of the distance of further instruction measured object 200, by taking the index path that Fig. 2 is shown as an example, further
It is illustrated, it is known that a certain length of measured object 200 calculates distance, and the actual range of ab is H1, the height of reflective projection a`b`
For h1, the distance between center O and reflective projection a`b` of camera lens 11 are v, utilize similar triangle theory, the center of camera lens 11
The actual range u=v*H of O and measured object 2001/h1, finally, duplicate measurements is averaged, and finally feeds back to host 21 and show
It is shown in display 22；The area of known measured object 200 calculates distance, and equally by taking Fig. 2 as an example, the real area of measured object 200 is
S1, the area of the corresponding reflective projection of measured object 200 is S2, the distance between camera lens 11 and reflective projection are v, utilize similar three
Angular principle, the actual range of camera lens 11 and measured object 200Duplicate measurements is averaged, and final anti-
It is fed to host 21 and is shown in display 22.
Since single laser ranging system 100 of the utility model has camera lens 11, camera assembly 12, processing and control module
13, partial mirror 14 and the laser emitting elements 15 for issuing single beam, partial mirror 14 are located at laser emitting elements
15 front, using the transmission effect of partial mirror 14 and reflex, so that 15 directives of laser emitting elements half
The single beam of transflector mirror 14 is transformed into directive measured object 200 and in parallel dual-beam, and measured object 200 will irradiate thereon flat
Row light reflexes to camera lens 11 again, and incident reflected light reflect and then measured object 200 is imaged in camera assembly by camera lens 11
12, camera assembly 12 will capture when laser emitting elements 15 are opened and the image of the when of closing, that is, has directional light to irradiate measured object 200
When (that is: laser emitting elements 15 open) and when irradiating measured object 200 without directional light two when (that is: laser emitting elements 15 are closed)
Measured object 200 under kind state captures the image being imaged by camera assembly 12 by camera lens 11, and processing and control module 13 is to two
Width image is subtracted each other and is filtered, so that the reflective projection of the measured object 200 in the case where laser emitting elements 15 are opened is obtained,
Since measured object 200 is remoter apart from camera lens 11, in the case where 11 focal length of camera lens is constant, the throwing that is projeced on camera assembly 12
Shadow is just smaller, and using this principle, as long as learning measured object 200 wherein a length or area, processing and control module 13 can lead to
It crosses corresponding image distance between length data or area data and projected image and camera lens 11 in projected image and object is calculated
, this makes it possible to effectively avoid interference caused by other reflections, make with the actual range between camera lens 11 to realize ranging
Treated that projected image accuracy is higher, to improve the accuracy of ranging.It can similarly obtain, be sent out as long as learning by laser
It penetrates element 15 and partial mirror 14 is formed by the spacing or area of dual-beam, is i.e. dual-beam is projeced on measured object 200
Practical spacing or spot areas, processing and control module 13 can by the spacing or area of two luminous point corresponding in projected image,
The actual range between object and camera lens 11 is calculated in image distance between projected image and camera lens 11 indirectly, in other words, both
The related data that can use measured object 200 measures, and according to circumstances can also carry out ranging using the dual-beam of transmitting, be applicable in
The strong and structure of property is simple.
The person of being worth noting, the above-mentioned imaging transmission referred to is to be propagated in the form of light, dotted line arrow in Fig. 1 and Fig. 2
Head illustrates the mode and path that imaging is propagated, and solid arrow indicates the direction and path of data transmission；Front and back mentioned above
Direction is that user stands behind single laser ranging system 100 and faces when being directed at measured object 200 with single laser ranging system 100
Before, it is front positioned at the front side of user, the rear side positioned at user is rear.
It above disclosure is merely preferred embodiments of the utility model, certainly cannot be practical new to limit this with this
The interest field of type, therefore equivalent variations made according to the patent scope of the utility model still belong to the utility model and are covered
Range.
Claims (6)
1. a kind of list laser ranging system, including having the equipment body of display, the equipment body includes host and display,
The host is for controlling and handling the display work, and the display is for showing data, it is characterised in that: the list
Laser ranging system further includes ranging mechanism, and the ranging mechanism includes:
Laser emitting elements, for issuing single beam；
Partial mirror, the partial mirror are located at the front of the laser emitting elements, and the partial mirror is to described
The single beam that laser emitting elements are issued is transmitted and is reflected, and is in parallel dual-beam with form directive measured object；
Camera lens, for receiving the reflected light of the measured object；
Camera assembly, the camera assembly are located at the rear of the camera lens, and the reflected light of the measured object passes through the camera lens
It reflects and images in the camera assembly；
Processing and control module, the processing and control module are connect with the host, camera assembly and laser emitting elements respectively, institute
The opening and closing that processing and control module controls the laser emitting elements are stated, and the laser emitting elements are opened and closed
The image that Shi Suoshu camera assembly is captured is handled to obtain the distance of measured object and be supplied to the display.
2. list laser ranging system as described in claim 1, it is characterised in that: the partial mirror and laser emitting elements
It is arranged in the side of the camera lens.
3. list laser ranging system as described in claim 1, it is characterised in that: the camera assembly includes CCD device and light
The center of circle, the CCD device and aperture is located on the primary optical axis of the camera lens.
4. list laser ranging system as described in claim 1, it is characterised in that: the processing and control module is described to be integrated in
Central processing unit or digital signal processor on host.
5. list laser ranging system as described in claim 1, it is characterised in that: the equipment body is handheld device master
Body.
6. list laser ranging system as claimed in claim 5, it is characterised in that: the handheld device main body is intelligent hand
Machine, tablet computer, smart camera, intelligent camera or shooting gun tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821444507.6U CN208765704U (en) | 2018-09-03 | 2018-09-03 | Single laser ranging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821444507.6U CN208765704U (en) | 2018-09-03 | 2018-09-03 | Single laser ranging system |
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| Publication Number | Publication Date |
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| CN208765704U true CN208765704U (en) | 2019-04-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821444507.6U Expired - Fee Related CN208765704U (en) | 2018-09-03 | 2018-09-03 | Single laser ranging system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830525A (en) * | 2020-07-28 | 2020-10-27 | 广东博智林机器人有限公司 | Laser triangle ranging system |
| CN112229381A (en) * | 2020-09-23 | 2021-01-15 | 南京航空航天大学 | Smart phone ranging method using arm length and camera |
| CN114046768A (en) * | 2021-11-10 | 2022-02-15 | 重庆紫光华山智安科技有限公司 | Laser ranging method and device, laser ranging equipment and storage medium |
-
2018
- 2018-09-03 CN CN201821444507.6U patent/CN208765704U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830525A (en) * | 2020-07-28 | 2020-10-27 | 广东博智林机器人有限公司 | Laser triangle ranging system |
| CN111830525B (en) * | 2020-07-28 | 2023-04-07 | 广东博智林机器人有限公司 | Laser triangle ranging system |
| CN112229381A (en) * | 2020-09-23 | 2021-01-15 | 南京航空航天大学 | Smart phone ranging method using arm length and camera |
| CN114046768A (en) * | 2021-11-10 | 2022-02-15 | 重庆紫光华山智安科技有限公司 | Laser ranging method and device, laser ranging equipment and storage medium |
| CN114046768B (en) * | 2021-11-10 | 2023-09-26 | 重庆紫光华山智安科技有限公司 | Laser ranging method, device, laser ranging equipment and storage medium |
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Granted publication date: 20190419 |