Tailorable discrete optical sensor

Details Tailorable discrete optical sensor Tailorable discrete optical sensor

1979-11-13

1982-08-31

Truhe, J. V.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

340 21, B66B 140

Patent

active

043467881

ABSTRACT:
A discrete position encoder having a plurality of spaced apart pairs of optical sources and detectors, thereby providing a plurality of interruptible light beams, mounted on one member, cooperating with a light-occluding vane which is mounted on another member movable relative to the first member, there being at least two of the detectors which are not occluded while at least two other detectors are occluded when the two members are relatively centrally aligned with each other, the vane having a notch therein centrally disposed along the vane in the direction of relative motion, the notch being relatively adjustable in size by means of adding additional membranes, such as self-sticking plastic sheet or the like, to the vane to alter the light-occluding capacity of the notch, thereby to tailor the response of the detectors to the effective notch caused by the altering.

REFERENCES:
patent: 2410550 (1946-11-01), Padua
patent: 3414088 (1968-12-01), Bruns et al.
patent: 3483950 (1969-12-01), Simpson
patent: 3749203 (1973-07-01), Hoelscher
patent: 3815711 (1974-06-01), Hoelscher
patent: 3963098 (1976-06-01), Lewis et al.

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