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1. CN1217063 - Refractive index gradient lens

Office Chine
Numéro de la demande 97194230.7
Date de la demande 15.04.1997
Numéro de publication 1217063
Date de publication 19.05.1999
Numéro de délivrance 1171099
Date de délivrance 13.10.2004
Type de publication C
CIB
G02C 7/06
GPHYSIQUE
02OPTIQUE
CLUNETTES; LUNETTES DE SOLEIL OU LUNETTES PROTECTRICES DANS LA MESURE OÙ LEURS CARACTÉRISTIQUES SONT LES MÊMES QUE CELLES DES LUNETTES; LENTILLES DE CONTACT
7Pièces optiques
02Verres; Systèmes de verres
06bifocaux; multifocaux
G02B 3/10
GPHYSIQUE
02OPTIQUE
BÉLÉMENTS, SYSTÈMES OU APPAREILS OPTIQUES
3Lentilles simples ou composées
10Lentilles bifocales; Lentilles multifocales
CPC
B29D 11/00355
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
11Producing optical elements, e.g. lenses or prisms
00009Production of simple or compound lenses
00355with a refractive index gradient
B29D 11/0073
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
11Producing optical elements, e.g. lenses or prisms
0073Optical laminates
G02C 7/061
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
7Optical parts
02Lenses; Lens systems ; ; Methods of designing lenses
06bifocal; multifocal ; ; progressive
061Spectacle lenses with progressively varying focal power
G02C 2202/12
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
2202Generic optical aspects applicable to one or more of the subgroups of G02C7/00
12Locally varying refractive index, gradient index lenses
G02C 2202/16
GPHYSICS
02OPTICS
CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
2202Generic optical aspects applicable to one or more of the subgroups of G02C7/00
16Laminated or compound lenses
Déposants Innotech, Inc.
英诺特公司
Inventeurs R. D. Blum
R·D·布鲁姆
A. Gupta
A·古普塔
Mandataires tan mengsheng
中国专利代理(香港)有限公司
Données relatives à la priorité 08643656 06.05.1996 US
Titre
(EN) Refractive index gradient lens
(ZH) 梯度折射率透镜
Abrégé
(EN)
An optical product such as an optical lens, or semi-finished lens blank (10) is provided comprising a composite of at least three different and separately applied layers (40), each layer having a different refractive index which allow for a progressive multifocal lens having a wide and natural progression of vision when looking from far to near. In addition, a method is provided for simply, quickly and inexpensively manufacturing a composite refractive gradient progressive multifocal lens. A transition zone (45) disposed between a base and an outer layer (50) includes a distinct and separately applied transition layer or layers (40) having an effective refractive index which is intermediate between the refractive indices of the base and outer layers, and preferably approximates the geometric mean of the refractive indices of the base and outer layers. This transition zone may include multiple transition layers, with each transition layer having a different and distinct refractive index. The lens is substantially free of unwanted peripheral astigmatism, incorporates a wide reading zone and is easy to fit a patient and possesses a cosmetic appearance which is mostly invisible.

(ZH)

一种光学制品如光学透镜或半成品透镜毛坯(10),该光学制品包括由至少三种不同而且分别加上的膜层(40)组合而成,每一层具有不同的折射率以便当由远及近观察时使得渐增多焦点透镜具有宽的和自然的递增视力。还提供一种制作复合梯度折射率渐增多焦点透镜的简单、快捷而且低成本的方法。位于基质层和外层(50)之间的过渡区(45)包括一个或几个不同的而且是分别加上的过渡层(40),过渡区(45)的有效折射率介于基质层和外层的折射率之间,而且最好大致为基质层和外层的折射率的几何平均数。该过渡区可以包括多个过渡层,其中每个过渡层具有不同的折射率。该透镜基本上免受不希望的边缘散光的影响,包括宽的视力区,患者容易佩戴,而且看不到分界线,外形美观。

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