Precision adjustable light barrier

A light barrier having a light emitter ( 9 ) spaced apart from a light receiver ( 10 ), the emitter including a light source ( 12 ) and transmission optics ( 13 ) emitting a substantially parallel light beam 11 . The light receiver ( 10 ) and the light emitter ( 9 ) are aligned with each other for f...

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Bibliographische Detailangaben
1. Verfasser:	BERGBACH ROLAND
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING DETECTING MASSES OR OBJECTS ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRICITY ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS HEATING LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS SAFETY DEVICES IN GENERAL TESTING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A light barrier having a light emitter ( 9 ) spaced apart from a light receiver ( 10 ), the emitter including a light source ( 12 ) and transmission optics ( 13 ) emitting a substantially parallel light beam 11 . The light receiver ( 10 ) and the light emitter ( 9 ) are aligned with each other for focusing the light beam ( 11 ) from the light emitter ( 9 ) by means of reception optics ( 15 ) on a reception element ( 17 ) for generating an electrical signal as a function of the light received. A partially reflecting optical boundary surface between the reception optics ( 15 ) and the reception element ( 17 ), and an alignment plate ( 18 ) which includes a light entry opening ( 19 ) and a target disk ( 20 ), are positioned in front of the reception optics ( 15 ) and are used for aligning the light receiver ( 10 ) and the light emitter ( 9 ).