Bohest AG

Disclosed is a two step process for preparing lithium fluoride, wherein in a first step lithium carbonate is converted to lithium bicarbonate using gaseous carbon dioxide and in a second step the lithium bicarbonate is converted to lithium fluoride using hydrogen fluoride, wherein the first step is carried out in a Buss loop reactor. The first step may be in batch or continuous mode; the second step is done in continuous mode. Improvements in the Buss loop reactor for performing the process are also disclosed.

A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having anterior surface, a posterior surface and at least one diffractive structure including a plurality of zones. The at least one diffractive structure is for at least one of the anterior surface and the posterior surface. Each zone includes at least one echelette having a least one step height. The step height(s) are individually optimized for each zone. To compensate chromatic aberration of eye from distance to a range of vision, a greater than 2π phase step height may be employed and the step height(s) folded by a phase, which is an integer multiple of two multiplied by π. Hence chromatic aberration of eye may be compensated to improve vision from distance to near.

In general, devices and systems for a tangentially actuated magnetic momentum transfer generator, and methods of use thereof, are provided. In an aspect, an electrical generator having a plurality of turns of wire forming a coil, a first magnet positioned in the coil, at least one focus magnet positioned about the coil, and an actuator movable relative to the first magnet in a direction tangential to an outer surface of the first magnet are provided. The actuator can be configured to cause rotation of the first magnet, and the rotation of the first magnet and/or an interaction of the first magnet with a magnetic field of one or more of the at least one focus magnet and the actuator magnet can induce a voltage across a first terminal end and a second terminal end of the plurality of turns of wire.

A pallet conveyor comprises a first conveyor belt (13) forming a first belt conveying surface (130) extending along a conveying direction (c), and a second conveyor belt (14) forming a second belt conveying surface (140) extending along the conveying direction (c). The first belt conveying surface (130) and the second belt conveying surface (140) are arranged parallel and side by side as well as spaced apart from each other with respect to a transverse direction (t) perpendicular to the conveying direction (c). The pallet conveyor further comprises a plurality of conveyor rollers (10, 10a) arranged along two rows (101, 102) extending along the conveying direction (c) and forming two roller conveying surfaces (105, 106) extending along the conveying direction (c). The two roller conveying surfaces (105, 106) are arranged between the first conveyor belt (13) and the second conveyor belt (14) parallel and side by side to the first belt conveying surface (130) and the second belt conveying surface (140). Each conveyor roller (10, 10a) of the plurality of conveyor rollers (10, 10a) is driven directly by at least one of the first conveyor belt (13) and the second conveyor belt (14).

A method and system provide an ophthalmic lens including a lens body having a chamber therein, a reservoir module coupled with the lens body and an optical fluid. At least part of the lens body is flexible. The reservoir module includes a reservoir and a heat sensitive portion bordering the reservoir. The reservoir has a reservoir volume and is fluidically connected with the chamber. The heat sensitive portion has a shape responsive to a temperature of at least forty five degrees Celsius such that the reservoir volume changes in response to at least part of the heat sensitive portion reaching the temperature. The optical fluid resides in the chamber and the reservoir. A change in the reservoir volume flows a portion of the optical fluid between the reservoir and the chamber such that the flexible portion of the lens body undergoes a shape change corresponding to a base power change.

The present invention is directed to a lipid-based ophthalmic emulsion. The emulsion has an increased amount of a mucoadhesive galactomannan polymer that promotes a long-lasting protection against desiccation and moisture retention.

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Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

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