Optical attenuator and optical wedge adjusters coupled together to prevent overriding

Claim 1

APPARATUS FOR CONTROLLING THE AMOUNT OF RADIATION RECEIVED BY AN ELEMENT FOR A SOURCE OF RADIATION COMPRISING: FIRST CONTROL MEANS MOVABLY MOUNTED FOR MOVEMENT ALONG A PATH INTERMEDIATE SAID SOURCE OF RADIATION AND SAID ELEMENT TO CONTROL THE AMOUNT OF RADIATION RECEIVED BY SAID ELEMENT AS A FUNCTION OF THE POSITION OF SAID FIRST CONTROL MEANS; SECOND CONTROL MEANS MOVABLY MOUNTED FOR MOVEMENT ALONG A PATH INTERMEDIATE SAID SOURCE OF RADIATION AND SAID ELEMENT TO CONTROL THE AMOUNT OF RADIATION RECEIVED BY SAID ELEMENT AS A FUNCTION OF THE POSITION OF SAID SECOND CONTROL MEANS; MEANS FOR CONTROLLING THE MOVEMENT OF SAID FIRST CONTROL MEANS ALONG SAID PATH; COUPLING MEANS COUPLING SAID FIRST CONTROL MEANS TO SAID SECOND CONTROL MEANS FOR CONTROLLING THE MOVEMENT OF SAID SECOND CONTROL MEANS AS A FUNCTION OF THE MOVEMENT OF SAID FIRST CONTROL MEAN, SAID COUPLING MEANS PROVIDING A PREDETERMINED RANGE OF MOVEMENT FOR SAID FIRST CONTROL MEANS TO THE EXCLUSION OF SAID SECOND CONTROL MEANS AND FOR JOINT MOVEMENT OF SAID FIRST AND SECOND CONTROL MEANS WHEN THE MOVEMENT OF SAID FIRST CONTROL MEANS EXCEEDS SAID RANGE WHEREBY SAID FIRST AND SECOND CONTROL MEANS COOPERATE TO CONTROL THE AMOUNT OF RADIATION RECEIVED BY SAID ELEMENT.