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Title:
眼科補正レンズの向きを決定するための方法及び装置並びに補正レンズを光学的に設計する方法
Document Type and Number:
Japanese Patent JP5431938
Kind Code:
B2
Abstract:
A device and method for determining under wearing conditions at least one component of the orientation of a correcting ophthalmic lens of eyeglasses relative to the head of a future wearer. Provision is made for mounting a position-identification system (20) on the frame (10) and/or on a presentation lens fitted to the frame, which system includes at least one identification element (60, 70, 80) having at least one known geometrical characteristic, for capturing the image of the identification element in two dimensions in a vertical facial plane, for processing the captured image to measure the captured geometrical characteristic of the image of the identification element that depends on the known geometrical characteristic of the identification element, and for calculating at least one component of the orientation of the lens by comparing the captured geometrical characteristic with the known geometrical characteristic. A method of optically designing the correcting lens is disclosed.

Inventors:
Chauveau, Jean-Pierre
Fabier, Rievois
Application Number:
JP2009527911A
Publication Date:
March 05, 2014
Filing Date:
September 10, 2007
Export Citation:
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Assignee:
Essilor International (Compagne General Doputek)
International Classes:
G02C13/00; G02C7/02
Domestic Patent References:
JP2008513070A
JP2005342186A
JP2007522496A
JP2003522958A
JP63205637A
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami
Kazuyoshi Ohira
Yasushi Ohashi