METHODS AND ASSEMBLIES RELATING TO THE MANUFACTURE OF VARIABLE FOCUSING POWER OPTICAL DEVICES

Methods of filling an envelope (16) of a compression-type adjustable optical device (10), such as a liquid lens or mirror, which is formed in part by a distensible membrane (11) having an exterior optical surface, with a substantially incompressible fluid (15) to a predetermined optical power or rad...

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Bibliographic Details
Main Authors JACOBY, Thomas Norman Llyn, STEVENS, Robert Edward, WORSLEY, Thomas
Format Patent
LanguageEnglish
French
German
Published 11.10.2023
Subjects
BOTTLES, JARS OR SIMILAR CONTAINERS
CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OFBOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOTOTHERWISE PROVIDED FOR
CONVEYING
FUNNELS
HANDLING THIN OR FILAMENTARY MATERIAL
LIQUID HANDLING
MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS
OPENING, CLOSING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PACKING
PERFORMING OPERATIONS
PHYSICS
STORING
TRANSPORTING
UNPACKING
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Summary:Methods of filling an envelope (16) of a compression-type adjustable optical device (10), such as a liquid lens or mirror, which is formed in part by a distensible membrane (11) having an exterior optical surface, with a substantially incompressible fluid (15) to a predetermined optical power or radius of curvature; the methods comprising pumping fluid into the envelope (16) under vacuum through a fluid supply conduit (23) in fluid communication with an interior of the envelope (16) while allowing air to escape from the envelope through a fluid overflow conduit (26) in fluid communication with the interior of the envelope (16); continuing to pump fluid (15) into the envelope (16) to cause the membrane (11) to distend to an optical power of the optical device (10) that is greater than the predetermined optical power while allowing excess fluid (15) to escape from the envelope through the overflow device (26); slowing or stopping the supply of fluid to the envelope (16), thereby to allow the membrane (11) progressively to relax and monitoring the optical power of the optical device (10) until it falls to the predetermined optical power; removing the fluid supply conduit (23) and fluid overflow conduit (26); and thereafter sealing the envelope (16). Also disclosed is an overflow device having a deflector portion (261) and a filling device (280) for use in the methods of the invention.
Bibliography:Application Number: EP20230161336