Position encoder with closed-ring diode array

Details Position encoder with closed-ring diode array Position encoder with closed-ring diode array

1981-09-16

1983-12-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340347P, G01D 534

Patent

active

044219806

ABSTRACT:
An angular-position encoder has a transparent scale (106) which is rotatably supported between an illumination device (109) secured to the housing and a photoelectric receiver. A self-scanning photodiode array (102) which has an annular photosensitive region (103) is used as the receiver. The otherwise uniform incremental graduation (108) of the scale (102) which is projected onto the array is interrupted at one point by a code field (111) which covers a few diodes of the array. Eased on the numbers of the diodes onto which the code field (111) is projected, the position of the scale (106) is determined as an absolute quantity by a "rough" read-out electronic system, while a "fine" reading (added to the "rough" determination) is effected by an interpolation based on the signal intensities of the other diodes covered by the incremental graduation (108).

REFERENCES:
patent: 3509563 (1970-04-01), Boggs

Affiliated with

Also associated with

Rating

Position encoder with closed-ring diode array does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Position encoder with closed-ring diode array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Position encoder with closed-ring diode array will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-109273