CN2765141Y - Composite laser scanning measuring head - Google Patents
Composite laser scanning measuring head Download PDFInfo
- Publication number
- CN2765141Y CN2765141Y CN 200420120209 CN200420120209U CN2765141Y CN 2765141 Y CN2765141 Y CN 2765141Y CN 200420120209 CN200420120209 CN 200420120209 CN 200420120209 U CN200420120209 U CN 200420120209U CN 2765141 Y CN2765141 Y CN 2765141Y
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- head
- laser scanning
- scanning
- measuring head
- combined type
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Abstract
The utility model discloses a composite laser scanning and measuring head, which comprises a scanning and measuring head housing. Two optical collecting lenses which form an intersection angle are arranged on a base plate of the scanning and measuring head housing, a semiconductor laser generator is arranged between the optical collecting lenses and a 2D projection head is arranged between the two optical collecting lenses. When the utility model is used, the composite laser scanning and measuring head of the utility model adopts a mode of combining 3D laser scan and 2D projection, when the laser scanning and measuring head scans small products or sharp outlines on workpieces, useless point interference caused by laser line divergences can be corrected by data collected by the 2D projection head, so that the accuracy of measured 3D data can be improved.
Description
Technical field
The utility model relates to a kind of measurement mechanism, particularly a kind of combined type laser scanning measurement head that is used for reverse-engineering measurement model three-dimensional data.
Background technology
Reverse-engineering (Reverse Engineering) progressively develops as an advanced person's manufacturing technology and grows up, and by the enforcement of reverse-engineering, can reduce development risk, reduces cost of development, accelerates the cycle that product is successfully developed.Therefore, the application of reverse-engineering progressively relates to all trades and professions, has greatly improved the social production rate.Obtaining accurately from material object, three-dimensional data model is the key of reverse-engineering.At present both at home and abroad be divided into contact and contactless two kinds in the method that adopts aspect the object dimensional DATA REASONING, though contact type measurement has advantages such as precision height, good reliability, but it exists, and speed is slow, the wear measurement face, need probe radius is done compensation and can't shortcoming such as accurately be measured to soft object, this technology is used be subject to many limitations.The contactless laser scanner technique that adopts, its laser scanning measurement head more as shown in Figure 1, 2, it comprises scanning survey head shell 1, scanning base plate 2, two 3 D laser scanning unit 3; Scanning base plate 2 is positioned at scanning survey head shell 1 bottom, and it is middle with scanning survey head shell 1 that 3 D laser scanning unit 3 is positioned at scanning base plate 2, and described 3 D laser scanning unit 3 comprises planar array type CCD31, optical loupes head 32; Though its measuring speed is fast, lower to clamping position relation and operating personnel's requirement of workpiece,, laser line scanning is when scanning tiny or sharp-pointed profile, and laser rays is dispersed and is caused some assorted points, thereby influences the accuracy of data.
Summary of the invention
Fundamental purpose of the present utility model is to provide a kind of laser line scanning when scanning tiny or sharp-pointed profile, can avoid and eliminate laser rays to disperse and cause of the interference of assorted point, help improving the combined type laser scanning measurement head of measuring the three-dimensional data accuracy image data.
Secondary objective of the present utility model is to provide a kind of effective must minimizing to measure the dead angle, raises the efficiency, and accelerates the combined type laser scanning measurement head of measuring speed.
In order to achieve the above object, the technical scheme that the utility model adopted is: combined type laser scanning measurement head, it comprises two optically detecting camera lenses that the angle of cut is installed on the base plate of scanning survey head shell, shell, be provided with the semiconductor laser generator between the optically detecting camera lens, between two optically detecting camera lenses, be provided with two-dimensional projection's head;
In the said structure, described two-dimensional projection head is positioned at semiconductor laser generator top;
In the said structure, the planar array type CCD that described two-dimensional projection head comprises the optical loupes head and is attached thereto, and be fixed on the shell bottom plate of scanning survey head by being positioned at semiconductor laser generator rear support member;
In the said structure, the optical loupes head front periphery of described two-dimensional projection head is provided with assist illuminator;
In the said structure, described scanning survey head shell is made of integrated insulator housings and base plate;
During use, the mode that the utility model combined type laser scanning measurement head adopts 3 D laser scanning to combine with two-dimensional projection, when the laser scanning measurement head on the scanning workpiece when tiny product or sharp-pointed profile, disperse the assorted point that causes by the data correction of two-dimensional projection's head collection because of laser rays and disturb, thus the accuracy that improves measured three-dimensional data.
Description of drawings
Fig. 1 is existing plain type laser scanning measurement head stereographic map;
Fig. 2 is existing plain type laser scanning measurement head inner structure synoptic diagram;
Fig. 3 is the utility model combined type laser scanning measurement head stereographic map;
Fig. 4 is the utility model combined type laser scanning measurement head inner structure synoptic diagram;
Embodiment
Shown in Fig. 3,4, the utility model combined type laser scanning measurement head comprises shell 4 and base plate 5, is installed on two optically detecting heads 6 on the base plate 5; 6 one-tenth certain angles of cut of two optically detecting heads are so that gather laser scanning information, and the base plate between the optically detecting head 6 is provided with semiconductor laser generator 8; Optically detecting head 6 is made of optical lens and planar array type CCD61; The utility model is fixed with two-dimensional projection 7, the 7 planar array type CCD71 that comprise optical loupes head 72 and be attached thereto of two-dimensional projection by support member 9 on the base plate at semiconductor laser generator 8 rear portions; In the present embodiment, two-dimensional projection 7 is positioned at the centre of two optically detecting heads 6;
For guaranteeing two-dimensional projection's effect, the optical loupes head 72 positive peripheries of two-dimensional projection's head are provided with assist illuminator 73, and the present embodiment assist illuminator adopts the LED lamp;
The utility model scanning survey head shell 4 is made of integrated insulator housings and base plate 5.
When using the utility model, at first, mark the corresponding relation of pixel and the spatial point of gust CCD61 that just appearing by marking positive device.When semiconductor laser generator 8 sends laser rays, project the surface to be measured of measured workpiece, project on the area array CCD 61 by optical system, can calculate the 2-D data of workpiece according to the corresponding relation of having demarcated.Whole physical dimension by the scanning motion of scanning system with measured workpiece obtain, thereby effective must the minimizing measured the dead angle, raises the efficiency, and accelerates measuring speed.
Two-dimensional projection 7 is mainly used to calibrate the distance between the pixel of above-mentioned area array CCD 71, and the corresponding relation of the pixel of definite area array CCD 71 pixels and computer screen.When workpiece is positioned over measuring table, be 20 times optical loupes head 72 by enlargement factor, image on the computer screen, then with mouse directly on screen point get required point, the coordinate figure that can calculate point according to the corresponding relation of having demarcated; Therefore, two-dimensional projection 7 is on the scanning workpiece during tiny, sharp-pointed profile, the assorted point that can avoid laser rays to disperse and cause disturbs, make that error reaches minimum, the feasible accuracy that helps improving measured data between the actual numerical value of numerical value that described laser scanning measurement head measures three-dimensional data and measured workpiece.Owing to the function that adopts optically detecting head 6 with the complete alternative plain edition laser scanning device of two-dimensional projection's 7 complex function that combine and two-dimensional projection's machine, therefore reduce the cost of this combined type laser scanning measurement head, the suitable existing product that replaces is promoted the use of on a large scale.
Claims (5)
1, combined type laser scanning measurement head, comprise two optically detecting camera lenses that the angle of cut is installed on the base plate of scanning survey head shell, shell, be provided with the semiconductor laser generator between the optically detecting camera lens, it is characterized in that: between two optically detecting camera lenses, be provided with two-dimensional projection's head.
2, combined type laser scanning measurement head as claimed in claim 1 is characterized in that: two-dimensional projection's head is positioned at semiconductor laser generator top.
3, combined type laser scanning measurement head as claimed in claim 1 or 2, it is characterized in that: the planar array type CCD that two-dimensional projection's head comprises the optical loupes head and is attached thereto, and be fixed on the shell bottom plate of scanning survey head by being positioned at semiconductor laser generator rear support member.
4, as combined type laser scanning measurement head as described in the claim 3, it is characterized in that: the optical loupes head front periphery of two-dimensional projection's head is provided with assist illuminator.
5, combined type laser scanning measurement head according to claim 1, it is characterized in that: scanning survey head shell is made of integrated insulator housings and base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120209 CN2765141Y (en) | 2004-12-20 | 2004-12-20 | Composite laser scanning measuring head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120209 CN2765141Y (en) | 2004-12-20 | 2004-12-20 | Composite laser scanning measuring head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2765141Y true CN2765141Y (en) | 2006-03-15 |
Family
ID=36168059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420120209 Expired - Fee Related CN2765141Y (en) | 2004-12-20 | 2004-12-20 | Composite laser scanning measuring head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2765141Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020648A1 (en) * | 2015-08-05 | 2017-02-09 | 杭州思看科技有限公司 | Handheld scanning device framework structure |
| 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 |
-
2004
- 2004-12-20 CN CN 200420120209 patent/CN2765141Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017020648A1 (en) * | 2015-08-05 | 2017-02-09 | 杭州思看科技有限公司 | Handheld scanning device framework structure |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN SIRUI PRECISION MACHINERY LTD. Free format text: FORMER OWNER: SHENZHEN CITY SHENZHEN CITY SIRUI PRECISION MACHINERY CO., LTD Effective date: 20070209 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070209 Address after: 518101 Guangdong city of Shenzhen province Baoan District Songgang Street Community Ho Chung Hong Kong Hongxing Industrial Zone No. 3 Patentee after: Shenzhen ideal precision machine Co., Ltd. Address before: 518101 Guangdong Province, Shenzhen Baoan District 23 District Boseong venture Road Arts crafts emporium, two storey A toplus Patentee before: Shenzhen Serein Precision Tech Co., Ltd. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |