Title:
MEASURING DEVICE PROVIDED WITH A PROBE-TIP
Document Type and Number:
WIPO Patent Application WO/2005/108919
Kind Code:
A1
Abstract:
The inventive measuring device (1) is used for measuring the shape, outline and/or roughness of a part and comprises a contact-less optical probe having a large numerical aperture provided with at least two different focal points associated with at least two optical receptors. Said optical receptors produce a differential signal for controlling a positioning device (13) for tracking said optical probe in such a way that the part surface is maintained inside the measuring area thereof. Said differential signal makes it possible to rapidly and accurately tracking the position of a sensor arrangement (3).
More Like This:
Inventors:
LEHMANN PETER (DE)
Application Number:
PCT/EP2005/004223
Publication Date:
November 17, 2005
Filing Date:
April 20, 2005
Export Citation:
Assignee:
CARL MAHR HOLDING GMBH (DE)
LEHMANN PETER (DE)
LEHMANN PETER (DE)
International Classes:
G01B5/28; G01B11/02; G01B11/30; G02B21/00; (IPC1-7): G01B11/30; G01B5/28; G01B11/02; G02B21/00
Domestic Patent References:
| WO1998044375A2 | 1998-10-08 | |||
| WO2003008905A1 | 2003-01-30 |
Foreign References:
| DE1473780A1 | 1969-03-13 | |||
| GB2077421A | 1981-12-16 | |||
| DE19907289C1 | 2000-08-31 | |||
| DE3322714A1 | 1985-01-10 |
Other References:
TIZIANI H J ET AL: "THREE-DIMENSIONAL IMAGE SENSING BY CHROMATIC CONFOCAL MICROSCOPY", APPLIED OPTICS, OPTICAL SOCIETY OF AMERICA,WASHINGTON, US, vol. 33, no. 10, 1 April 1994 (1994-04-01), pages 1838 - 1843, XP000434202, ISSN: 0003-6935
Attorney, Agent or Firm:
RÜGER, BARTHELT & ABEL (Esslingen, DE)
Download PDF:
Previous Patent: METHODS AND APPARATUS FOR DETERMINING THREE DIMENSIONAL CONFIGURATIONS
Next Patent: TARGET ACQUISITION DEVICE
Next Patent: TARGET ACQUISITION DEVICE