Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1999-06-11
2000-08-08
Pham, Hoa Q.
Optics: measuring and testing
By polarized light examination
With light attenuation
25055922, G01B 1124
Patent
active
061009849
ABSTRACT:
A measurement system (10) for accurately measuring the surface geometry of a part in three dimensions includes a laser (22) for emitting a laser beam (20). An objective lens (18) receives the laser beam (20) and expands the received laser beam (20) into a diverged beam. A liquid crystal system (16) is disposed in front of the objective lens (18) with respect to the laser (22) for receiving the diverged beam. The liquid crystal system (16) receives the diverged beam and generates at least one fringe pattern (24) on a surface of a three dimensional part which is to be measured. A computer (12) is in communication with the liquid crystal system (16) to control the pitch and phase of the fringe pattern (24).
REFERENCES:
patent: 4906099 (1990-03-01), Casasent
patent: 5175601 (1992-12-01), Fitts
patent: 5319445 (1994-06-01), Fitts
patent: 5450204 (1995-09-01), Shigeyama et al.
patent: 5471308 (1995-11-01), Zeien
patent: 5581352 (1996-12-01), Zeien
patent: 5589942 (1996-12-01), Gordon
patent: 5691784 (1997-11-01), Hausler et al.
patent: 5825482 (1998-10-01), Nikoonahad
Chen Fang
Griffen Christopher Thomas
Harwood Patrick J.
Song Mumin
LandOfFree
Surface measurement system with a laser light generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface measurement system with a laser light generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface measurement system with a laser light generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1155667