Method and apparatus for acquiring reference grating of...

Details Method and apparatus for acquiring reference grating of... Method and apparatus for acquiring reference grating of...

2011-08-30

2011-08-30

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

Shape or surface configuration

Triangulation

C356S601000, C356S610000

Reexamination Certificate

active

08009298

ABSTRACT:
Disclosed herein is a method of acquiring a reference grating of a three-dimensional measurement system using moiré, wherein the three-dimensional measurement system includes a light source, a projection grating, a grating actuator and a camera, and analyzes the moiré pattern acquired through the camera to measure the shape of the object. The method includes the steps of acquiring an initial reference grating using the light source and the projection grating, confirming whether or not the acquired initial reference grating includes noise through a noise detector, and moving the projection grating through the grating actuator to acquire the next reference grating when the initial reference grating does not include noise and correcting the reference grating when the reference grating includes noise. The method can remove the noise included in the reference grating to improve the accuracy of measurement of an object.

REFERENCES:
patent: 4564295 (1986-01-01), Halioua
patent: 4794550 (1988-12-01), Greivenkamp, Jr.
patent: 5069549 (1991-12-01), Harding
patent: 7489832 (2009-02-01), Makino et al.
patent: 7787692 (2010-08-01), Noguchi et al.
patent: 2007/0171288 (2007-07-01), Inoue et al.

Affiliated with

Also associated with

Rating

Method and apparatus for acquiring reference grating of... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for acquiring reference grating of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for acquiring reference grating of... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2687225