Displacement measuring device with interference grating

Details Displacement measuring device with interference grating Displacement measuring device with interference grating

2005-10-18

2005-10-18

Smith, Zandra V. (Department: 2877)

Optics: measuring and testing

By light interference

Having polarization

Reexamination Certificate

active

06956654

ABSTRACT:
A displacement measuring device allows a plurality of light beams to be incident at positions on a scale or diffracted at points on a scale grating, which are farther spaced away from each other than the diameter of the light beams on the scale grating, and makes an angle of incidence of each light beam on the scale equal generally to an angle of transmission of the diffracted light beam of each light beam. This makes the strength of a detection signal impervious to variations in pitch angle and allows for providing good signals. Accordingly, it is possible to attach the device easily to an apparatus and provide improved ease of use for the device.

REFERENCES:
patent: 5035507 (1991-07-01), Nishioki et al.
patent: 6166817 (2000-12-01), Kuroda
patent: A 1-185415 (1989-07-01), None
patent: A 2000-81308 (2000-03-01), None

Affiliated with

Also associated with

Rating

Displacement measuring device with interference grating does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Displacement measuring device with interference grating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Displacement measuring device with interference grating will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3474305