DE19608632B4 - Apparatus for determining the topography of a surface and method for determining the topography of a surface - Google Patents
Apparatus for determining the topography of a surface and method for determining the topography of a surface Download PDFInfo
- Publication number
- DE19608632B4 DE19608632B4 DE1996108632 DE19608632A DE19608632B4 DE 19608632 B4 DE19608632 B4 DE 19608632B4 DE 1996108632 DE1996108632 DE 1996108632 DE 19608632 A DE19608632 A DE 19608632A DE 19608632 B4 DE19608632 B4 DE 19608632B4
- Authority
- DE
- Germany
- Prior art keywords
- projection
- light beam
- topography
- mirror chip
- mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
- G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
-
- 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
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2536—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object using several gratings with variable grating pitch, projected on the object with the same angle of incidence
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Vorrichtung zur Bestimmung der Topographie einer Oberfläche, mit einer Projektionsvorrichtung (4), die ein Streifenmuster auf die Oberfläche (3) projiziert, und einer Betrachtungsvorrichtung (5), die das auf die Oberfläche projizierte Streifenmuster unter einem Winkel zur Projektionsrichtung erfasst und derart auswertet, daß die Topographie bestimmt wird, wobei die Projektionsvorrichtung (4) einen Spiegelchip (10) aufweist, der durch selektive Ablenkung eines Lichtstahls (9, 12) das Streifenmuster erzeugt.contraption for determining the topography of a surface, with a projection device (4) projecting a striped pattern on the surface (3), and one Viewing device (5) that projected onto the surface Strip pattern detected at an angle to the projection direction and evaluated in such a way that the Topography is determined, wherein the projection device (4) a mirror chip (10), which by selective deflection of a Lichtstahls (9, 12) generates the stripe pattern.
Description
Die Erfindung betrifft eine Vorrichtung zur Bestimmung der Topographie einer Oberfläche und ein Verfahren zum Bestimmen der Topographie einer Oberfläche.The The invention relates to a device for determining the topography a surface and a method for determining the topography of a surface.
Ein derartiges Verfahren ist allgemein unter den Begriffen Triangulation, Streifenlichtprojektion, Binär-Code-Verfahren oder Moiré-Verfahren bekannt. Bei den letzteren drei Verfahren wird ein auf die abzutastende bzw. zu messende Oberfläche ein Streifenmuster projiziert und von einer CCD-Kamera betrachtet. Durch Projektion verschiedener Phasenlagen (Phasenshift) bzw. unterschiedlicher Gitterkonstanten kann eine Information über die räumliche Lage jedes einzelnen Punktes der Oberfläche gewonnen werden.One Such a method is generally understood by the terms triangulation, Strip light projection, binary code or moire method known. In the latter three methods, one to be scanned or surface to be measured a striped pattern is projected and viewed by a CCD camera. By Projection of different phase positions (phase shift) or different Lattice constants can provide information about the spatial location of each individual Point of the surface be won.
Zur Erzeugung der Streifenprojektion werden üblicherweise entweder ein oder mehrere Liniengitter mit entsprechenden Verschiebe- oder Drehmechanismen oder ein LCD-Projektor verwendet. Diese bekannten Vorrichtungen sind jedoch hinsichtlich Streifenkontrast, Reaktionszeit bei der Verschiebung oder Drehung, Flexibilität in Bezug auf verschiedene Meßverfahren, Größe und Preis nicht optimal.to Generation of fringe projection is usually either on or several line grids with corresponding displacement or rotation mechanisms or an LCD projector used. These known devices However, in terms of stripe contrast, reaction time in the Displacement or rotation, flexibility in relation to different measuring method Size and price not optimal.
Aus
der JP 57-26706 A, der
Aus
der
Es ist Aufgabe der Erfindung, eine Vorrichtung sowie ein Verfahren zum Bestimmen der Topographie einer Oberfläche vorzusehen, die bzw. das im Hinblick auf die genannten Aspekte wesentlich verbessert ist.It Object of the invention, an apparatus and a method to determine the topography of a surface, the or significantly improved with regard to the above-mentioned aspects.
Die Aufgabe wird durch die Vorrichtung des Anspruchs 1 oder durch das Verfahren des Anspruchs 9 gelöst.The The object is achieved by the device of claim 1 or by the The method of claim 9 solved.
Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.further developments The invention are specified in the subclaims.
Ein wesentlicher Aspekt der Erfindung liegt darin, daß die oben genannten bekannten Vorrichtungen zur Streifenprojektion durch einen Spiegelchip, beispielsweise vom DMD-Typ, ersetzt werden. Ein derartiger Spiegelchip wurde beispielsweise für den Einsatz bei Projektoren, Druckern und Fernsehgeräten entwickelt und ist beispielsweise beschrieben im Artikel von Larry J. Hornbeck, "Current Status of the Digital Micromirror Device (DMD) for Projection Television Applications", International Electron Devices Meeting, 5.–8. Dezember 1993, Washington, US, oder in Larry J. Hornbeck, "Deformable-Mirror Spatial Light Modulators", Proceedings of SPIE The International Society for Optical Engineering, Volume 1150, San Diego, US, 6.–11. August 1989. Ein entsprechender Spiegelchip ist ferner auch in c't 1994, Heft 9, Seite 38, beschrieben.One essential aspect of the invention is that the above mentioned known devices for strip projection by a Mirror chip, for example of the DMD type, to be replaced. Such a mirror chip was for example developed for use with projectors, printers and televisions and is described, for example, in the article by Larry J. Hornbeck, "Current Status of the Digital Micromirror Device (DMD) for Projection Television Applications ", International Electron Devices Meeting, 5.-8. December 1993, Washington, US, or in Larry J. Hornbeck, "Deformable Mirror Spatial Light Modulators ", Proceedings of SPIE The International Society for Optical Engineering, Volume 1150, San Diego, US, 6-11. August 1989. A corresponding mirror chip is also in c't 1994, Issue 9, page 38, described.
Weitere Merkmale der Erfindung ergeben sich aus der Beschreibung eines Ausführungsbeispiels anhand der Figur, die schematisch den Aufbau der erfindungsgemäßen Vorrichtung darstellt.Further Features of the invention will become apparent from the description of an embodiment with reference to the figure, which schematically shows the structure of the device according to the invention represents.
Die
Figur zeigt einen Meßkopf
Dieser
Spiegelchip
Anstelle eines derartigen Spiegelchips ist auch ein Chip mit jeweils spaltenweise gemeinsam auslenkbaren Mikrospiegeln oder mit spaltenförmig geformten Mikrospiegeln einsetzbar. Auch einzelne Mikrospiegel können bei bestimmten Abtastverfahren wie Triangulation verwendet werden.Instead of Such a chip is also a chip with each column jointly deflectable micromirrors or with columnar shaped Micro mirrors can be used. Also, individual micromirrors may be included certain scanning methods such as triangulation.
Die
Projektionsvorrichtung
Die
Betrachtungsvorrichtung
Es
ist ferner eine nicht gezeigte Steuereinheit zur Koppelung und Steuerung
der Projektionsvorrichtung
Im
Betrieb wird der Meßkopf
Das
auf den Abtastbereich
Die Ansteuerung der einzelnen Mikrospiegel und damit das projizierte Streifenmuster, beispielsweise der Streifenabstand, kann entsprechend der abzutastenden Oberfläche gewählt werden; damit ist eine Anpassung an die Oberfläche, beispielsweise die Gradienten der Oberfläche, und entsprechend der geforderten Genauigkeit und Auflösung möglich. Da die bei der Auslenkung der Mikrospiegel bewegten Massen sehr klein sind, ist eine extrem kleine Auslenkzeit (nahezu "Echtzeit") und damit eine schnelle Folge einzelner Messungen bzw. verschobener Streifen möglich. Durch Auslenkung wahlweise einzelner Mikrospiegel oder Spiegelgruppen, z.B. Spalten oder Zeilen, kann eine Mehrzahl unterschiedlicher Meßverfahren wie z.B. Punkt-Triangulation, Linien-Triangulation, Moiré-Projektion, Streifenlicht-Projektion oder Absolutmessung durch Binär-Code-Verfahren durch entsprechende Steuerung einer einzigen Vorrichtung durchgeführt werden.The Control of the individual micromirrors and thus the projected Stripe patterns, such as the stripe spacing, may be appropriate the surface to be scanned chosen become; This is an adaptation to the surface, such as the gradients the surface, and according to the required accuracy and resolution possible. There the masses moved during the deflection of the micromirrors are very small, is an extremely small deflection time (almost "real time") and thus a fast result of each Measurements or shifted strips possible. By deflection optional single micromirrors or mirror groups, e.g. Columns or rows, For example, a plurality of different measuring methods, such as e.g. Point triangulation, line triangulation, Moire projection, Strip light projection or absolute measurement by binary code method appropriate control of a single device can be performed.
Weitere
Modifikationen der beschriebenen Vorrichtung sind möglich. So
kann die Projektionsvorrichtung
Claims (10)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996108632 DE19608632B4 (en) | 1996-03-06 | 1996-03-06 | Apparatus for determining the topography of a surface and method for determining the topography of a surface |
PCT/EP1997/000898 WO1997033140A1 (en) | 1996-03-06 | 1997-02-25 | Device and process for optically scanning surfaces |
AU20933/97A AU2093397A (en) | 1996-03-06 | 1997-02-25 | Device and process for optically scanning surfaces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996108632 DE19608632B4 (en) | 1996-03-06 | 1996-03-06 | Apparatus for determining the topography of a surface and method for determining the topography of a surface |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19608632A1 DE19608632A1 (en) | 1997-09-11 |
DE19608632B4 true DE19608632B4 (en) | 2005-12-29 |
Family
ID=7787378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1996108632 Expired - Lifetime DE19608632B4 (en) | 1996-03-06 | 1996-03-06 | Apparatus for determining the topography of a surface and method for determining the topography of a surface |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2093397A (en) |
DE (1) | DE19608632B4 (en) |
WO (1) | WO1997033140A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19742264C2 (en) * | 1997-09-25 | 2001-09-20 | Vosseler Erste Patentverwertun | endoscope |
DE19748967B4 (en) * | 1997-11-06 | 2009-04-02 | Bundesdruckerei Gmbh | Method and device for producing a variable security hologram |
DE19757773A1 (en) * | 1997-12-24 | 1999-07-01 | Bernward Maehner | Detailed simulation of plastic changes in human face to prepare cosmetic corrections using plastic surgery |
DE19824709A1 (en) * | 1998-06-03 | 1999-12-09 | Bundesdruckerei Gmbh | Producing luminance distribution array from rays projected onto medium using digital array radiation processors |
DE10244819B4 (en) * | 2002-09-26 | 2007-05-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for detecting a fluorescent substance on a technical surface |
DE10317018A1 (en) | 2003-04-11 | 2004-11-18 | Infineon Technologies Ag | Multichip module with several semiconductor chips and printed circuit board with several components |
DE10323317A1 (en) * | 2003-05-23 | 2004-12-16 | Conti Temic Microelectronic Gmbh | Car object detection or distance measurement optical system path folding unit uses silicon micromirror reflectors |
US7064810B2 (en) * | 2003-09-15 | 2006-06-20 | Deere & Company | Optical range finder with directed attention |
EP1706839B1 (en) * | 2004-01-15 | 2014-11-12 | Technion Research & Development Foundation Limited | Three-dimensional video scanner |
DE102004050355A1 (en) * | 2004-10-15 | 2006-04-27 | Steinbichler Optotechnik Gmbh | Method and device for testing the surface of a tire |
DE102006048234A1 (en) * | 2006-10-11 | 2008-04-17 | Steinbichler Optotechnik Gmbh | Method and device for determining the 3D coordinates of an object |
US8219274B2 (en) * | 2009-07-02 | 2012-07-10 | Robert Bosch Gmbh | 3-dimensional perception system and method for mobile platform |
US8274507B2 (en) * | 2009-07-02 | 2012-09-25 | Robert Bosch Gmbh | Method and apparatus for obtaining 3-dimensional data with a portable device |
DE102010022827A1 (en) * | 2010-06-05 | 2011-12-08 | TSK Prüfsysteme GmbH | Height surveying device for measuring the height of a motor vehicle central electrics |
DE102012001307A1 (en) | 2012-01-19 | 2013-07-25 | Friedrich-Schiller-Universität Jena | Method for three dimensional measurement of objects, particularly under obstructive lighting conditions, involves detecting to be changed or multiple different patterns by detector, where patterns are projected on object surface |
DE102012002161A1 (en) | 2012-01-31 | 2013-08-01 | Friedrich-Schiller-Universität Jena | Method for three-dimensional optical surface measurement of objects by measurement device, involves projecting spectral narrow band optical patterns on object, and detecting patterns as location-differing image pattern of object surface |
DE102013200657B4 (en) * | 2013-01-17 | 2015-11-26 | Sypro Optics Gmbh | Device for generating an optical dot pattern |
AT520794B1 (en) * | 2017-12-20 | 2019-11-15 | Prinoth Ag | snow vehicle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3829925A1 (en) * | 1988-09-02 | 1990-03-15 | Kaltenbach & Voigt | Optical probe for 3D measurement of teeth in the buccal cavity |
EP0460889A2 (en) * | 1990-06-06 | 1991-12-11 | Texas Instruments Incorporated | Optical tracking system |
EP0486219A2 (en) * | 1990-11-13 | 1992-05-20 | Hughes Aircraft Company | Automated evaluation of painted surface quality |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5726706A (en) * | 1980-07-24 | 1982-02-12 | Mitsubishi Electric Corp | Detector for shape of body |
-
1996
- 1996-03-06 DE DE1996108632 patent/DE19608632B4/en not_active Expired - Lifetime
-
1997
- 1997-02-25 AU AU20933/97A patent/AU2093397A/en not_active Abandoned
- 1997-02-25 WO PCT/EP1997/000898 patent/WO1997033140A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3829925A1 (en) * | 1988-09-02 | 1990-03-15 | Kaltenbach & Voigt | Optical probe for 3D measurement of teeth in the buccal cavity |
EP0460889A2 (en) * | 1990-06-06 | 1991-12-11 | Texas Instruments Incorporated | Optical tracking system |
EP0486219A2 (en) * | 1990-11-13 | 1992-05-20 | Hughes Aircraft Company | Automated evaluation of painted surface quality |
Non-Patent Citations (4)
Title |
---|
c't (1994) Heft 9, S. 38 "Spieglein, Spieglein auf dem Chip" * |
HORNBECK, L.J.: "Current Status of the Digital Micromirror Device (DMD) for Projection Televi- sion Applications" in International Electronics Devices Meeting, 5.-8. Dez. 1993, Washington, USA (IEDM 93-S:381-384) * |
HORNBECK, L.J.: "Deformable-Mirror Spatial Light Modulators" in: Proceedings of SPIE THe Interna- tional Society for Optical Engineering, 6.-11. August 1989, San Diego, USA, SPIE Critical Re- views Series, Vol. 1150, S. 86-102 * |
JP 57-26706 A in: Patent Abstracts of Japan, Section P, Vol. 6/No. 88 (1982) P-118 * |
Also Published As
Publication number | Publication date |
---|---|
DE19608632A1 (en) | 1997-09-11 |
AU2093397A (en) | 1997-09-22 |
WO1997033140A1 (en) | 1997-09-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19608632B4 (en) | Apparatus for determining the topography of a surface and method for determining the topography of a surface | |
DE3137031C2 (en) | Multiple beam scanning optics system | |
DE4410078B4 (en) | Optical position detection unit and optical coordinate input unit | |
DE3512064C2 (en) | Device for measuring coverage errors | |
DE102011082349B3 (en) | Method and apparatus for three-dimensional confocal measurement | |
EP3298346A1 (en) | Device for optical 3d measuring of an object | |
DE10038622A1 (en) | Scanning microscope, optical arrangement and method for image acquisition in scanning microscopy | |
DE4415834C2 (en) | Device for measuring distances and spatial coordinates | |
EP0719434B1 (en) | Arrangement for generating a matrix image on a photosensitive recording medium | |
DE19732668C2 (en) | Device and method for the calibration of beam scanners | |
EP2619526B1 (en) | Autocollimator telescope having a camera | |
EP3559724B1 (en) | Device and method for exposing a light-sensitive layer | |
DE10013299C2 (en) | Method and device for the geometric calibration of pixel-oriented photosensitive elements | |
DE4308456C2 (en) | Device for determining the position of a positioning body relative to a reference body | |
DE102010003608B4 (en) | Device and method for characterizing a deflectable micromirror | |
DE69721447T2 (en) | Optical scanning system | |
DE10259667B4 (en) | Process for enlarging the field of view of a focal plane array camera | |
DE10024634A1 (en) | Electron beam patterning apparatus for use in manufacture of semiconductor device, sets up adjusting value of shaping lens such that detected position slippage of electron beam is minimum | |
DE3601828A1 (en) | OPTICAL LIGHT SCAN SYSTEM OF AN IMAGE OUTPUT SCANNER WITH AN ELECTROMECHANICAL LIGHT MODULATOR | |
DE4339908C2 (en) | Method and device for pyramidal error compensation | |
DE4042317A1 (en) | Light conductor identification method - measuring intensity of light passing through from non-ordered end to ordered end | |
DE2702448A1 (en) | METHOD OF POSITIONING A BRANDED WORKPIECE RELATIVE TO A SCANING AREA TO A MASK | |
DD212581A5 (en) | DEVICE FOR MEASURING THE DISTANCE BETWEEN TWO GRITUAL STRUCTURES AND THE GREAT STRUCTURAL ELEMENTS ARISING IN CYCLIC SUCCESS | |
DE4011780C1 (en) | Scanning surface by projection of modulation pattern - ascertaining coordinates by observing at angle to projection direction line pattern produced when second modulation pattern is projected | |
DE3133464C2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: SCAPS GMBH, 81476 MUENCHEN, DE |
|
8363 | Opposition against the patent | ||
8330 | Complete disclaimer |