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1. EP1812226 - MOLDS AND METHOD OF USING THE SAME FOR OPTICAL LENSES

Office
European Patent Office
Application Number 05851840
Application Date 16.11.2005
Publication Number 1812226
Publication Date 01.08.2007
Publication Kind A4
IPC
B29D 11/00
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
CPC
B29D 11/00009
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
B29D 11/00413
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
00413made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges
B29D 11/00528
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
0048Moulds for lenses
00528Consisting of two mould halves joined by an annular gasket
B29D 11/00538
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
0048Moulds for lenses
00538Feeding arrangements
B29D 11/00903
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
00865Applying coatings; tinting; colouring
00894colouring or tinting
00903on the surface
Applicants QSPEX L L C
Inventors SU KAI
LU RICHARD
WRIGHT DAVID
MAKITA DEBBIE
Designated States
Title
(DE) FORMEN UND VERFAHREN ZU DEREN VERWENDUNG FÜR OPTISCHE LINSEN
(EN) MOLDS AND METHOD OF USING THE SAME FOR OPTICAL LENSES
(FR) MOULES ET PROCEDE D'UTILISATION DE CEUX-CI POUR DES LENTILLES OPTIQUES
Abstract
(EN) The present invention encompasses, in part, a method and apparatus for lens casting in which two molds (20 and 40), preferably formed of plastic, are interconnected or joined together via a ring (50) to form a mold cavity (60) having substantially the same dimensions of the lens to be formed therein. The invention is further directed to compositions and methods used in lens casting. In a first implementation the invention includes a mold (10) having a ring (50) having an interior periphery (54), a front mold (20) formed of a plastic and having a lens-forming surface (22), an edge (28) circumscribing the lens-forming surface that is sized to be complementarily received within a portion of the interior periphery of the ring, and a base (30) having dimensions greater than the interior periphery, and a rear mold (40) formed of a plastic having a lens-forming surface (42).
(FR) L'invention concerne, en partie, un procédé et un appareil permettant de mouler des lentilles et dans lesquels deux moules, de préférence en plastique, sont interconnectés ou assemblés par le biais d'un anneau, de manière à former une cavité présentant sensiblement les mêmes dimensions que les lentilles à former dans ceux-ci. L'invention concerne également des compositions et des procédés utilisés dans le moulage de lentilles. Dans un premier mode de réalisation, l'appareil comprend un moule présentant un anneau doté d'une périphérie intérieure; un moule avant formé dans un plastique et comprenant une surface de formation de lentille, un bord entourant ladite surface et dimensionné de manière à être reçu de façon complémentaire dans une partie de la périphérie intérieure de l'anneau et une base présentant des dimensions supérieures à celles de la périphérie intérieure; ainsi qu'un moule arrière formé dans un plastique et possédant une surface de formation de lentille.