Position and movement measuring device - uses light reflected from object to photodiodes in detector via slotted diaphragm

Position and movement measuring device - uses light reflected from object to photodiodes in detector via slotted diaphragm

Object position and movement are measured w.r.t. a measurement system. The device has a light source and a detector consisting of two adjacent photodiodes. Light source (3) irradiates as evenly as possible a constant width slot in a diaphragm (5), rigidly connected either with the object (2) or with...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SCHULZ,WOLFGANG,.DR
Format: Patent
Sprache:eng ; ger
Schlagworte:
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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Beschreibung
Zusammenfassung:Object position and movement are measured w.r.t. a measurement system. The device has a light source and a detector consisting of two adjacent photodiodes. Light source (3) irradiates as evenly as possible a constant width slot in a diaphragm (5), rigidly connected either with the object (2) or with the measurement system (1). In the latter case light is reflected from the object (2) or from a mirror (7) mounted on it. Light is then focussed by lenses (8) on the detector (4), and the objects position is derived from the ratio between the sum and difference of photocurrents delivered by the detector (4) photodiodes.