Variable power fluid lens

• US 3,161,718 A
• Filed: 07/12/1961
• Issued: 12/15/1964
• Est. Priority Date: 07/12/1961
• Status: Expired due to Term

• Current Assignee: Wallace V De Luca
• Original Assignee: Wallace V De Luca
• Inventors: DE LUCA WALLACE V
• Application Number:
  US04/123,574
• Time in Patent Office: 1,252 Days
• US Class Current: 359/666
• CPC Class Codes: G02B 1/06 made of fluids in transparent cells
• CPC Class Codes: G02B 3/14 of variable focal length

Claims

1. A VARIABLE FLUID LENS COMPRISING IN COMBINATION;

A LENS BLOCK HAVING AN AXIAL OPENING THERETHROUGH, A FLEXIBLE AND RESILIENT TRANSPARENT LENS DIAPHRAGM SPANNING ONE END OF SAID OPENING, TRANSPARENT MEANS AXIALLY SPACED FROM SAID LENS DIAPHRAGM AND SPANNING SAID OPENING, SAID DIAPHRAGM AND TRANSPARENT MEANS DEFINING IN A FLUID CHAMBER THEREBETWEEN, A PRESSURE FLUID WITHIN SAID CHAMBER, A ANNULAR TENSION CONTROLLING DIAPHRAGM, MEANS RETAINING SAID TENSION CONTROLLING DIAPHRAGM IN PROXIMITY TO THE PERIPHERAL EDGE PORTION OF SAID LENS DIAPHRAGM, FLUID PRESSURE MEANS OF VARIABLE EXPANDING SAID TENSION CONTROLLING DIAPHRAGM AGAINST THE PERIPHERAL PORTION OF SAID LENS DIAPHRAGM, WHEREBY TENSION OF THE LENS DIAPHRAGM MAY BE VARIED.