Scale for reflective photoelectric encoder and reflective...

Details Scale for reflective photoelectric encoder and reflective... Scale for reflective photoelectric encoder and reflective...

2006-09-19

2006-09-19

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C359S572000, C359S576000

Reexamination Certificate

active

07109472

ABSTRACT:
In a scale for a reflective photoelectric encoder in which a reflective film is not formed on the side faces of phase gratings, an edge angle θ of the phase grating is set larger than 80 degrees and less than 90 degrees. Accordingly, stable diffraction efficiency is obtained, even if there are variations in the shape and size of the gratings.

REFERENCES:
patent: 5786931 (1998-07-01), Speckbacher et al.
patent: 2001/0046055 (2001-11-01), Speckbacher et al.
patent: 2004/0008416 (2004-01-01), Okuno
patent: 196 52 563 (1998-06-01), None
patent: 100 25 694 (2002-03-01), None
patent: 0 752 599 (1997-01-01), None
patent: 2244002 (1990-09-01), None
patent: A 10-318793 (1998-12-01), None

Affiliated with

Also associated with

Rating

Scale for reflective photoelectric encoder and reflective... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Scale for reflective photoelectric encoder and reflective..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scale for reflective photoelectric encoder and reflective... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3593259