CN204854633U - Optical filtering and light filling structure of handheld laser three -dimensional scanner - Google Patents
Optical filtering and light filling structure of handheld laser three -dimensional scanner Download PDFInfo
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- CN204854633U CN204854633U CN201520618967.6U CN201520618967U CN204854633U CN 204854633 U CN204854633 U CN 204854633U CN 201520618967 U CN201520618967 U CN 201520618967U CN 204854633 U CN204854633 U CN 204854633U
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- camera lens
- light filling
- filtering device
- scanner
- optical filtering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- General Physics & Mathematics (AREA)
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Abstract
The utility model provides an optical filtering and light filling structure of handheld laser three -dimensional scanner, includes for the height of choosing the optical filtering device of specific wave band light before the camera camera lens and being used for the illuminating mark point light filling generator that shines, front end and fixed mounting that the optical filtering device lies in the camera camera lens are at the camera camera lens, high bright light filling generator fixed mounting the outer lane of camera camera lens and annular distribute in the periphery of optical filtering device, the optical filtering device with high bright light filling generator has the same optical band. The utility model provides a precision is higher, the better optical filtering and light filling structure of handheld laser three -dimensional scanner of stability.
Description
Technical field
The utility model belongs to handheld three-dimensional scanning technique field, particularly relates to a kind of optical filtering and light filling structure of hand-held laser 3 d scanner.
Background technology
Handheld laser spatial digitizer is as the high-tech instrument of one, and it is mainly used to detect and analyzes in real world object or environment shape and appearance data, and the data obtained by instrument carry out three-dimensional reconstruction calculating, and create the digital model of actual object.It is its application all visible in fields such as industrial design, reverse-engineering, machine vision, Defect Detection, criminal identification, digital historical relic and video display game makings.
Current scanline instrument is broadly divided into contact-type 3 D scanner and non-contact 3-D scanner, contact-type 3 D scanner is by the mode compute depth of probe touching body surface, non-contact 3-D scanner then adopts by extra energy projects to testee surface, and the reflection by energy calculates three-dimensional spatial information; Handheld laser spatial digitizer is as the one of non-contact 3-D scanner, and its principle adopts laser to project testee surface as energy source, by the laser spots on video camera identity surface; Because the reflector efficiency of gauge point is under various circumstances different, therefore handheld device all needs to add light filling mechanism in order to illuminate gauge point to ensure best detected state in reality uses, simultaneously in order to get rid of the light source of wave band beyond laser to the impact of video camera extraction laser spots, filtering device need be added in order to choose specific band light before camera lens, therefore Handheld laser spatial digitizer equipment all need can install a set of camera lens at camera lens place additional and filter and light filling structure.
At present, the scanning theory of hand-held laser 3 d scanner be according to demarcate in advance good mutually between two of position and above shooting and laser projector obtain scanned object surface profile point cloud.The difference than non-moving use can be there is in Handheld laser spatial digitizer precision in mobile use procedure, its main cause is that Handheld laser spatial digitizer exists the phenomenon occurring because of intraware gravity or stressed skin between scanner housing and internal lens assembly to offset in the course of the work by analysis, because camera lens optical filtering and light filling assembly are installed on scanner housing, the optical axis of camera lens optical filtering and light filling assembly optical axis and camera lens is caused to be become the state of intersect at angle by original coUinear state, the center wave band of optical filter is caused to offset like this, the effective wave band causing projecting gauge point that the laser of body surface and supplementary lighting sources irradiate reflective is obstructed, the light of its all band will pass through optical filter on the contrary, interference scanning.When there is scanner housing and internal lens assembly in the course of work, that skew occurs is larger simultaneously, and actual reserved installing space less time, will mechanical interference be there is in camera lens and scanner housing, cause the minor alteration of camera position, thus cause the outer ginseng of camera change and affect scanning accuracy.Just because of the problems referred to above, limiting the use of handheld three-dimensional scanner in some high-precision requirement occasions to a certain extent.
Utility model content
In order to overcome the deficiency that prior art exists, the utility model provides that a kind of precision is higher, the optical filtering of the good hand-held laser 3 d scanner of stability and light filling structure.
The utility model solves the technical scheme that its technical matters adopts:
A kind of optical filtering of hand-held laser 3 d scanner and light filling structure, comprise the filtering device in order to choose specific band light before camera lens and the highlighted light filling generator in order to illuminate gauge point, described filtering device is positioned at the front end of camera lens and is fixedly mounted on camera lens, described highlighted light filling generator be fixedly mounted on the outer ring of camera lens and annular spread in the periphery of described filtering device; Described filtering device has identical optical band with described highlighted light filling generator.
Further, described optical filtering and light filling structure also comprise the mount pad installing filtering device and highlighted light filling generator, described mount pad comprises the annular connecting portion in order to be fixedly connected with camera lens front end and is positioned at the annular groove in annular connecting portion front, described filtering device is arranged in described annular groove, and described highlighted light filling generator is positioned at the rear of described mount pad.
Further again, described optical filtering and light filling structure also comprise camera lens outer cover, described camera lens outer cover is positioned at the front of described filtering device, and described camera lens outer cover is provided with the through hole corresponding with described filtering device, and described camera lens outer cover and scanner housing are flexible coupling by flexible connection structure part.
Further again, described filtering device is optical filter.
Further, described highlighted light filling generator is the aluminum annular-shaped substrate with high-brightness LED lamp pearl, and described high-brightness LED lamp pearl is provided with two or more, and plural high-brightness LED lamp pearl is angularly uniformly distributed along the outer ring of camera lens.
Further, described mount pad is distributed with the light hole corresponding with described high-brightness LED lamp pearl with on described camera lens outer cover.
Further, described mount pad is T-flange structure, described T-flange structure comprises annular end face, described annular groove is provided with in described annular end face, the rear end of described annular end face is provided with described annular connecting portion, described annular end face is coaxial setting with described annular groove, described annular connecting portion, described annular connecting portion is provided with the external thread matched with the internal thread on camera lens, the rear end of described annular end face is also provided with the stud in order to fixing described highlighted light filling generator, and described stud is positioned at outside the outer ring of described camera lens.
The beneficial effects of the utility model are mainly manifested in: the utility model adopts structure filtering device and highlighted light filling generator being installed on camera lens front end, first the effective field of view of camera lens in scanner process is being used to be guaranteed, can not acting force be subject to along with scanner housing and change, next ensure that camera lens filters and the optical axis of light filling assembly optical axis and camera lens remains coUinear state, and the structure simultaneously in the utility model effectively prevents camera lens and scanner housing to interfere in practical process; Described camera lens filters and adopts flexible connection structure to be connected with light filling structure and scanner housing, improves in traditional structure because external stress effect causes camera lens to filter and the situation of light filling structure generation deformation; Thus handheld three-dimensional scanner is greatly improved in precision, stability, handheld three-dimensional scanner can be applied in more field.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is exploded perspective view of the present utility model.
Fig. 3 be in camera lens effective field of view scope and shelter clear aperature size and shelter from the relation schematic diagram of lens pitch; Wherein (a) for shelter be the schematic diagram of d1 from the spacing of camera lens front end face, (b) for shelter be the schematic diagram of d2 from the spacing of camera lens front end face.
Fig. 4 is the optical filtering of existing hand-held laser 3 d scanner and the structural representation of light filling structure.
Fig. 5 is the optical filtering of existing hand-held laser 3 d scanner and the explosive view of light filling structure.
Fig. 6 is that existing camera lens filters and light filling structure, at camera lens and scanner housing, light path schematic diagram when offseting occurs.
Fig. 7 is that the utility model, at camera lens and scanner housing, light path schematic diagram when offseting occurs.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
With reference to Fig. 1 ~ Fig. 7, a kind of optical filtering of hand-held laser 3 d scanner and light filling structure, comprise the filtering device 03 in order to choose specific band light before camera lens and the highlighted light filling generator 05 in order to illuminate gauge point, described filtering device 03 is positioned at the front end of camera lens 01 and is fixedly mounted on camera lens 01, described highlighted light filling generator 05 be fixedly mounted on the outer ring of camera lens 01 and annular spread in the periphery of described filtering device 03; Described filtering device 03 has identical optical band with described highlighted light filling generator 05.
Further, described optical filtering and light filling structure also comprise the mount pad 02 installing filtering device 03 and highlighted light filling generator 05, described mount pad 02 comprises the annular connecting portion in order to be fixedly connected with camera lens front end and is positioned at the annular groove in annular connecting portion front, described filtering device 03 is arranged in described annular groove, and described highlighted light filling generator 05 is positioned at the rear of described mount pad 02.
Further again, described optical filtering and light filling structure also comprise camera lens outer cover 04, described camera lens outer cover 04 is positioned at the front of described filtering device 03, described camera lens outer cover 04 is provided with the through hole corresponding with described filtering device 03, and described camera lens outer cover 04 is flexible coupling by flexible connection structure part 07 with scanner housing 06.
Further again, described filtering device 03 is optical filter.
Further, described highlighted light filling generator 05 is the aluminum annular-shaped substrate with high-brightness LED lamp pearl, and described high-brightness LED lamp pearl is provided with two or more, and plural high-brightness LED lamp pearl is angularly uniformly distributed along the outer ring of camera lens 01.
Further, described mount pad 02 is distributed with the light hole corresponding with described high-brightness LED lamp pearl with on described camera lens outer cover 04.
Further, described mount pad 02 is T-flange structure, described T-flange structure comprises annular end face, described annular groove is provided with in described annular end face, the rear end of described annular end face is provided with described annular connecting portion, described annular end face is coaxial setting with described annular groove, described annular connecting portion, described annular connecting portion is provided with the external thread matched with the internal thread on camera lens 01, the rear end of described annular end face is also provided with the stud in order to fixing described highlighted light filling generator 05, and described stud is positioned at outside the outer ring of described camera lens 01.
In the present embodiment, the light hole with the high-brightness LED lamp pearl on the aluminum annular-shaped substrate of high-brightness LED lamp pearl is uniformly distributed in the surrounding near optical filter edge.
See figures.1.and.2, described mount pad 02, filtering device 03, camera lens outer cover 04 and highlighted light filling generator 05 are installed in the optical filtering and light filling structure that camera lens 01 are formed camera lens, assembly passes through camera lens outer cover 04 with scanner housing 06 without Hard link, but be flexible coupling by flexible connection structure part 07, thus for dust-proof, namely described filtering device 03 is used for choosing the optical device of required wave band, and what adopt in an embodiment is optical filter, described highlighted light filling generator 05 is the aluminum annular-shaped substrate being angularly uniformly distributed several high-brightness LED lamp pearls along the outer ring of camera lens 01, for illuminating by the body surface scanned in scanning process, described optical filter and highlighted light filling generator have identical optical band, described mount pad 02 mainly plays fixing filtering device 03 and highlighted light filling generator 05, mount pad 02 adopts T-flange structure, annular connecting portion adopts the internal thread on external thread and camera lens 01 to be fixed, annular groove is used for fixing optical filter, stud on the rear end of annular end face is used for fixing highlighted light filling generator 05, namely highlighted light filling generator 05 of the present utility model is fixed on the outer ring of camera lens 01 of the rear end of mount pad 02 with the aluminum annular-shaped board structure of high-brightness LED lamp pearl, the circumference of mount pad 02 is uniformly distributed the light hole corresponding with the high-brightness LED lamp pearl on aluminum annular-shaped substrate.
As shown in Figure 2, basic and camera lens 01 front end face of optical filter in the present embodiment keeps fitting, effectively can retain the effective field of view scope of camera lens like this, the direction that in this structure, the light astigmatism direction of each high-brightness LED lamp pearl and the optical axis of camera lens are consistent simultaneously; Adopt flexible connection structure part 07 to be filtered by camera lens in described embodiment to be connected with scanner housing 06 with light filling structure, while adopting this kind of scheme effectively can play dustproof effect, the external force on scanner housing 06 also can be prevented to be delivered in camera lens optical filtering and light filling assembly.
As shown in Figure 3, for clear aperature size in camera lens effective field of view scope and shelter and shelter from lens pitch from relation schematic diagram, when in the shelter of camera lens front end, clear aperature size L fixes, the size of camera lens effective field of view scope is determined by the spacing of shelter from camera lens front end face; As shown in (a) in Fig. 3, the effective field of view scope obtaining camera lens when shelter is d1 from the spacing of camera lens front end face is a1, as shown in (b) in Fig. 3, the effective field of view scope obtaining camera lens when shelter is d2 from the spacing of camera lens front end face is a2, d1>d2 can be obtained by figure, a1<a2, therefore when clear aperature is fixing, expect larger effective field of view scope, the spacing of shelter from camera lens front end face can only be reduced as far as possible.
Existing camera lens as shown in Figure 4 and Figure 5 for existing in existing market filters and light filling structure, this structure comprises camera lens 08, filtering device 09, highlighted light filling generator 10 and scanner housing 11, wherein filtering device 09 and highlighted light filling generator 10 are fixed on scanner housing 11 and form camera lens optical filtering and light filling construction package, assembly and camera lens 08 are distinguished separate, interfere to prevent camera lens front end and assembly in installation process, therefore need between camera lens front end and assembly to retain certain assemblage gap, the field range of camera lens 08 is so directly caused to be less than the field range of the camera lens 01 in the utility model structure.
Be that two kinds of camera lenses filter and light filling structure, at camera lens and scanner housing, light path schematic diagram when offseting occurs as shown in Figure 6 and Figure 7, Fig. 6 is that existing camera lens filters and light filling structure, at camera lens and scanner housing 11, light path schematic diagram when offseting occurs, due to camera lens 08 and camera lens filter and light filling structure separate, so when scanner housing 11 will exist certain angle by External Force Acting or intraware each other due to during self gravitation effect, the light astigmatism direction of highlighted light filling generator 10 and the optical axis of camera lens 08 offset, cause when when entering camera lens, drift angle occurring after parallel light path is by filtering device, filtering device 09 is generally used for normal incidence, during oblique incidence, the Polarization Dependent Loss of filtering device 09 increases, its peak value and bandwidth can move to shortwave direction, and there is broadening and expand phenomenon in light distribution, filtering device 09 is generative center band discontinuity thereupon, the effective wave band causing projecting gauge point that the laser of body surface and supplementary lighting sources irradiate reflective is obstructed, the light of its all band will by optical filter interference scanning on the contrary, thus have impact on scanning accuracy.Another drawback of this kind of structure be when camera lens 08 front end installation dimension surplus stay not enough time, camera lens 08 will be formed with assembly interferes thus affects accuracy of detection.Fig. 7 is that the utility model camera lens filters and light filling structure, at camera lens 01 and scanner housing 06, light path schematic diagram when offseting occurs, when scanner housing 06 causes skew occurs each other by External Force Acting, to filter due to camera lens 01 and camera lens and light filling structure is fixed on integrally, the light astigmatism direction of highlighted light filling generator 05 remains consistent along the line with the optical axis of camera lens 01, therefore still keeping parallelism light path when parallel light path enters camera lens 01 after by filtering device 03, therefore energy remains unchanged substantially; To filter due to camera lens and light filling structure and scanner housing 06 adopt flexible connection structure, therefore when power can not be passed to lens assembly by during External Force Acting by scanner housing 06, ensure that the accuracy of detection of equipment.
Comprehensively above-mentioned, the utility model design is light and handy, efficiently solves the problem that current Handheld laser spatial digitizer camera lens filters and light filling structure offsets at the center wave band caused by External Force Acting, therefore has high industrial utilization.Above-described embodiment is illustrative principle of the present utility model and effect thereof only, not for limiting the utility model.
Claims (7)
1. the optical filtering of a hand-held laser 3 d scanner and light filling structure, comprise the filtering device in order to choose specific band light before camera lens and the highlighted light filling generator in order to illuminate gauge point, it is characterized in that: described filtering device is positioned at the front end of camera lens and is fixedly mounted on camera lens, described highlighted light filling generator be fixedly mounted on the outer ring of camera lens and annular spread in the periphery of described filtering device; Described filtering device has identical optical band with described highlighted light filling generator.
2. the optical filtering of a kind of hand-held laser 3 d scanner as claimed in claim 1 and light filling structure, it is characterized in that: described optical filtering and light filling structure also comprise installing the mount pad of filtering device and highlighted light filling generator, described mount pad comprises the annular connecting portion in order to be fixedly connected with camera lens front end and is positioned at the annular groove in annular connecting portion front, described filtering device is arranged in described annular groove, and described highlighted light filling generator is positioned at the rear of described mount pad.
3. the optical filtering of a kind of hand-held laser 3 d scanner as claimed in claim 2 and light filling structure, it is characterized in that: described optical filtering and light filling structure also comprise camera lens outer cover, described camera lens outer cover is positioned at the front of described filtering device, described camera lens outer cover is provided with the through hole corresponding with described filtering device, and described camera lens outer cover and scanner housing are flexible coupling by flexible connection structure part.
4. the optical filtering of a kind of hand-held laser 3 d scanner as described in claims 1 to 3 any one and light filling structure, is characterized in that: described filtering device is optical filter.
5. the optical filtering of a kind of hand-held laser 3 d scanner as claimed in claim 3 and light filling structure, it is characterized in that: described highlighted light filling generator is the aluminum annular-shaped substrate with high-brightness LED lamp pearl, described high-brightness LED lamp pearl is provided with two or more, and plural high-brightness LED lamp pearl is angularly uniformly distributed along the outer ring of camera lens.
6. the optical filtering of a kind of hand-held laser 3 d scanner as claimed in claim 5 and light filling structure, is characterized in that: described mount pad is distributed with the light hole corresponding with described high-brightness LED lamp pearl with on described camera lens outer cover.
7. the optical filtering of a kind of hand-held laser 3 d scanner as claimed in claim 6 and light filling structure, it is characterized in that: described mount pad is T-flange structure, described T-flange structure comprises annular end face, described annular groove is provided with in described annular end face, the rear end of described annular end face is provided with described annular connecting portion, described annular end face and described annular groove, described annular connecting portion is coaxial setting, described annular connecting portion is provided with the external thread matched with the internal thread on camera lens, the rear end of described annular end face is also provided with the stud in order to fixing described highlighted light filling generator, described stud is positioned at outside the outer ring of described camera lens.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520618967.6U CN204854633U (en) | 2015-08-17 | 2015-08-17 | Optical filtering and light filling structure of handheld laser three -dimensional scanner |
| PCT/CN2016/084369 WO2017028600A1 (en) | 2015-08-17 | 2016-06-01 | Light filtering and supplementing structure for hand-held laser three-dimensional scanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520618967.6U CN204854633U (en) | 2015-08-17 | 2015-08-17 | Optical filtering and light filling structure of handheld laser three -dimensional scanner |
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| Publication Number | Publication Date |
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| CN204854633U true CN204854633U (en) | 2015-12-09 |
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| CN201520618967.6U Active CN204854633U (en) | 2015-08-17 | 2015-08-17 | Optical filtering and light filling structure of handheld laser three -dimensional scanner |
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| CN (1) | CN204854633U (en) |
| WO (1) | WO2017028600A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017028600A1 (en) * | 2015-08-17 | 2017-02-23 | 杭州思看科技有限公司 | Light filtering and supplementing structure for hand-held laser three-dimensional scanner |
| CN106646424A (en) * | 2016-09-30 | 2017-05-10 | 深圳市镭神智能系统有限公司 | Optical detection system |
| WO2019169517A1 (en) * | 2018-03-04 | 2019-09-12 | 无锡盈达聚力科技有限公司 | Barcode recognition component and barcode recognition device |
| CN114089584A (en) * | 2021-10-27 | 2022-02-25 | 广东博智林机器人有限公司 | Anti-dazzle shooting device and construction robot |
| CN116839558A (en) * | 2023-09-01 | 2023-10-03 | 济南市勘察测绘研究院 | Computer geographic information scanning survey system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2765141Y (en) * | 2004-12-20 | 2006-03-15 | 深圳市鑫磊鐳瑞精密仪器有限公司 | Composite laser scanning measuring head |
| CA2731680C (en) * | 2008-08-06 | 2016-12-13 | Creaform Inc. | System for adaptive three-dimensional scanning of surface characteristics |
| CA2686904C (en) * | 2009-12-02 | 2012-04-24 | Creaform Inc. | Hand-held self-referenced apparatus for three-dimensional scanning |
| CN203011853U (en) * | 2012-12-28 | 2013-06-19 | 罗炳军 | Multi-light source detection device |
| CN203298744U (en) * | 2013-04-27 | 2013-11-20 | 上海良相智能化工程有限公司 | Hand-held 3D scanner |
| CN204854633U (en) * | 2015-08-17 | 2015-12-09 | 杭州思看科技有限公司 | Optical filtering and light filling structure of handheld laser three -dimensional scanner |
-
2015
- 2015-08-17 CN CN201520618967.6U patent/CN204854633U/en active Active
-
2016
- 2016-06-01 WO PCT/CN2016/084369 patent/WO2017028600A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017028600A1 (en) * | 2015-08-17 | 2017-02-23 | 杭州思看科技有限公司 | Light filtering and supplementing structure for hand-held laser three-dimensional scanner |
| CN106646424A (en) * | 2016-09-30 | 2017-05-10 | 深圳市镭神智能系统有限公司 | Optical detection system |
| WO2019169517A1 (en) * | 2018-03-04 | 2019-09-12 | 无锡盈达聚力科技有限公司 | Barcode recognition component and barcode recognition device |
| CN114089584A (en) * | 2021-10-27 | 2022-02-25 | 广东博智林机器人有限公司 | Anti-dazzle shooting device and construction robot |
| CN116839558A (en) * | 2023-09-01 | 2023-10-03 | 济南市勘察测绘研究院 | Computer geographic information scanning survey system |
| CN116839558B (en) * | 2023-09-01 | 2023-11-24 | 济南市勘察测绘研究院 | Computer geographic information scanning survey system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017028600A1 (en) | 2017-02-23 |
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Address after: Room 102, Unit 1, Building 12, No. 998, Wenyi West Road, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province, 311121 Patentee after: Sikan Technology (Hangzhou) Co.,Ltd. Address before: Room 611, Building 4, Zhejiang Overseas High-level Innovation Park, No. 998, Wenyi West Road, Yuhang District, Hangzhou City, Zhejiang Province, 311121 Patentee before: HANGZHOU SCANTECH Co. |