Device for indicating the position of two mechanical elements relative to one another

Abstract

Abstract AN INDICATING DEVICE COMPRISES A RECORD CARRIER PLATE CONSISTING OF INFORMATION CONTAINING ELEMENTS, SUCH AS SECTIONS OF HOLOGRAMS, AND OF A DIAPHRAGM HAVING AT LEAST ONE APERTURE CORRESPONDING IN SHAPE TO THE SHAPE OF ONE OF THE ELEMENTS. THE RECORD CARRIER PLATE AND THE DIAPHRAGM ARE DISPLACEABLE RELATIVE TO ONE ANOTHER, THEREBY REVEALING ONE OR MORE ELEMENTS BY THE DIAPHRAGM APERTURES. THE REVEALED ELEMENTS PROVIDE AN INFORMATION ON THE POSITION OF THE RECORD CARRIER PLATE RELATIVE TO THE DIAPHRAGM. IN A FIRST EMBODIMENT THE ELEMENTS ARE TRANSPARENT AND THE RECORD CARRIER PLATE IS ILLUMINATED BY TRANSMITTED LIGHT SO THAT AN IMAGE CAUSED BY THE INFORMATION CONTAINING ELEMENT IS PROJECTED THROUGH THE APERTURE ONTO A SCREEN OR MAY BE OBSERVED AS A VIRTUAL IMAGE BEHINE THE RECORD CARRIER PLATE. IN A SECOND EMBODIMENT THE RECORD CARRIER PLATE IS ILLUMINATED BY INCIDENT LIGHT WHICH IS REFLECTED FROM THE REVEALED ELEMENT ALSO TO BE PROJECTED ONTO A SCREEN OR VIEWED AS A VIRTUAL IMAGE. THE CARRIER PLATE MAY BE DISPLACEABLE IN ONE OR IN TWO DIRECTIONS OF A RECTANGULAR SYSTEM OF COORDINATES. IN THE FIRST CASE THE ELEMENTS ARE STRIPS EXTENDING PERPENDICULARLY TO THE DIRECTION OF MOVEMENT AND IN THE SECOND EMBODIMENT THE ELEMENTS ARE OF SQUARE SHAPE.

Inventors

• 👤 Fromund Hock

Bibliographic Details