American Hospital Supply Corporation

Heyer-Schulte Corporation

California Institute of Technology

Richard B MacAnally

Charles P Chase

Michael Hitoshi Ekinaka

An optical section of an intraocular lens has a pair of spaced apart threaded recesses which are threadingly locked to threaded shank sections of an iris retention loop. The shank sections are integrally joined to such loop so each shank section acts as an anchor preventing a screwing movement of the other shank relative to the optical section. A method is described of expanding a shank section of a lens retention member in situ within a threaded or other undercut recess of an optical section of an intraocular lens.

Method of attaching retention loops to an intraocular lens

Intraocular lens with threadably locked retention loops

A low-friction, abrasion-resistant, non-shedding glass fiber light guide and its method of construction. The light guide is particularly suited for endoscopic use in conjunction with other elements which may contact the light guide but must not either damage the guide or be damaged by it. The light guide comprises an elongated bundle of generally parallel glass fibers embedded in a hardened resin matrix, the bundle being ensheathed by a pair of thin protective layers disposed on opposite sides thereof, converging along a pair of side edges, and secured in place by the resinous matrix material. The method for making the light guide involves the steps of lining a mold cavity with a thin film, introducing the glass fibers and a hardenable liquid potting compound into the cavity, covering the exposed fibers and compound with a second film, rearranging the fibers and compound to establish the desired cross-sectional configuration, and then heating the mold and its contents until the resin is cured. In the disclosed embodiment, the desired cross-sectional configuration is of crescent shape. The light guide is also disclosed in combination with other coacting elements of an endoscope assembly.

Glass fiber light guide and method of making the same

A rod lens assembly having a flexible outer tube and a plurality of lens modules disposed in end-to-end relation therein. Each module comprises a rod lens secured within a protective cylindrical sleeve which extends axially beyond the end faces of the lens and which is provided near its ends with a pair of outwardly-projecting annular ribs. The ribs engage the inner surface of the flexible tube to support the modules in axial alignment with each other and to permit limited flexure of the outer tube without the transmission of bending or flexing forces to the modules themselves. The axial-projecting end portions of the sleeves serve as integral spacers which provide precise spacing between the opposing end faces of successive lenses when the tube is in its normal unflexed condition and which provide pivot points for the articulation of adjacent modules when the outer tube is flexed.

Modular rod lens assembly and method of making the same

A rod lens assembly for endoscopes and the like which includes an inner tube or barrel disposed in spaced or floating relation within a protective outer tube, the outer tube preferably including an inner layer of light-transmitting fibers and the inner tube containing a plurality of axially-spaced image-transmitting rod lenses. The wall portions of the barrel extending between the ends of adjacent lenses are provided with openings to allow precise positioning of the lenses during assembly and to provide zones of preferential flexure of the barrel when the entire assembly is flexed in normal use. In one embodiment, the cylindrical lenses are fixed in place by clamping forces exerted by the normally non-cylindrical walls of the barrel. The method for making such an assembly, including the steps of inserting, adjusting, securing, and cleaning the lenses, is also disclosed.

Rod lens assembly and method of making the same

There is provided a simple method and means for recording in any single-emulsion photographic film or plate an optical transparency which independently controls both the amplitude and the phase of the transmitted light at each transverse coordinate of the transparency according to predetermined spatial patterns. The phase and amplitude information are recorded at separate levels within the emulsion.

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Altadena, CA, United States of America

Richard B MacAnally