Devices for supporting, adjusting and displacing at least one of two optical plates located according to the fabry-perot principle

Claim 1

A HOLLOW BODY OF ELECTROSTRICTIVE MATERIAL FOR SUPPORTING, ADJUSTING AND DISPLACING AT LEAST ONE OF TWO OPTCAL PLATES LOCATED ACCORDING TO THE FABRY-PEROT PRINCIPLE, HAVING TWO APERTURES IN DIAMETRIC OPPOSITION TO EACH OTHER, AT LEAST ONE OF SAID APERTURES HAVING BEFORE IT ONE OF SAID PLATES, SAID BODY COMPRISING TWO RINGS WHICH ARE INTERCONNECTED BY WEBS SEPARATED BY HOLLOW SPACES, SAID WEBS BEING CONSIDERABLY NARROWER THAN SAID SPACES. ONE RING NEAR EACH OF SAID APERTURES, SAID WEBS INTERCONNECTING SAID RINGS, PROJECTIONS ON SAID RINGS IN PROLONGATION OF SAID WEBS, SAID PLATES BEING CONNECTED WITH SAID PROJECTIONS, ELECTRICALLY CONDUCTIVE LAYERS ON THE INNER AND OUTER SURFACES OF SAID WEBS, SAID LAYERS BEING ELECTRICALLY INSULATED FROM EACH OTHER BY SAID WEBS OF ELECTROSTRICTIVE MATERIAL, A VOLTAGE SOURCE ELECTRICALLY CONNECTED WITH SAID LAYERS, SAID VOLTAGE SOURCE BEING FOR PRODUCING ELECTRIC POTENTIAL AND ACCORDINGLY AN ELECTRIC FIELD BETWEEN THE LAYERS OF EACH WEB, SAID ELECTRIC FIELD CAUSING A CHANGE IN THE LENGTH OF EACH WEB BETWEEN SAID LAYERS PARALLEL TO THE GENERATRICES OF SAID HOLLOW BODY, AN ELECTRIC ADJUSTING MEANS FOR EACH WEB, SAID ELECTRIC ADJUSTING MEANS BEING FOR DIFFERENTIAL CHANGES IN THE POTENTIALS OF SAID LAYERS AND ACCORDINGLY FOR CHANGING THE ANGLE ENCLOSED BY SAID PLATES, AND AN ELECTRIC CONTROL MEANS FOR EQUAL CHANGES IN THE POTENTIALS OF SAID LAYERS OF ALL SAID WEBS AND ACCORDINGLY FOR CHANGING OF THE DISTANCES APART OF SAID PLATES WITHOUT CHANGES IN SAID ANGLE.