Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1976-05-03
1978-02-14
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356169, H01J 314
Patent
active
040741311
ABSTRACT:
The invention contemplates a system of two-dimensional grid markings for use in accurate two-coordinate identification of the instantaneous relative position of two closely spaced parallel surfaces, one of which may be on a slide-mounting base or plate, and the other of which may be on a movable slide to be viewed, as by microscope, at one or more selected regions in the field of the slide. For the disclosed embodiment, each of two orthogonally related grid markings on the base is orthogonally oriented with respect to a different one of two orthogonally related grid markings on the slide, and parallel lines of intersecting grids are in the same direction. Photoelectric means is disclosed for response to light modulation attributable to the respective x-y components of any given slide displacement, and digital techniques utilize the photoelectric response for measuring and/or control slide displacement.
REFERENCES:
patent: 3533702 (1970-10-01), Hock et al.
patent: 3633038 (1972-01-01), Falk
patent: 3867035 (1975-02-01), Kaul
patent: 3867038 (1975-02-01), Westell
Carl Zeiss-Stiftung
Nelms David C.
LandOfFree
Apparatus for measuring or setting two-dimensional position coor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for measuring or setting two-dimensional position coor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measuring or setting two-dimensional position coor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-526517