METHOD OF MANUFACTURING A SPECTACLE LENS, FINISHED UNCUT SPECTACLE LENS AND SEMI-FINISHED LENS BLANK

A finished uncut spectacle lens has a curved front surface including an optical bowl with a convex curvature and a peripheral lentic zone surrounding the optical bowl. The curvature of the curved front surface in the peripheral lentic zone is flatter than in the optical bowl. The optical bowl size i...

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Hauptverfasser:	Gall, Michael, Nolan, Angela
Format:	Patent
Sprache:	eng
Schlagworte:	CONTACT LENSES OPTICS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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creator	Gall, Michael Nolan, Angela
description	A finished uncut spectacle lens has a curved front surface including an optical bowl with a convex curvature and a peripheral lentic zone surrounding the optical bowl. The curvature of the curved front surface in the peripheral lentic zone is flatter than in the optical bowl. The optical bowl size is large enough that a lens filling the entire frame can be glazed from it. The inclusion of a flatter peripheral lentic zone enables a larger diameter of the finished unglazed lens (d) with larger edge thickness than would be possible if the same back surface was cut on a semi-finished blank having a uniform spherical front, without compromise to the finished lens center thickness. In addition, a method of manufacturing such a spectacle lens and a semi-finished lens blank used in the method are provided.
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The curvature of the curved front surface in the peripheral lentic zone is flatter than in the optical bowl. The optical bowl size is large enough that a lens filling the entire frame can be glazed from it. The inclusion of a flatter peripheral lentic zone enables a larger diameter of the finished unglazed lens (d) with larger edge thickness than would be possible if the same back surface was cut on a semi-finished blank having a uniform spherical front, without compromise to the finished lens center thickness. 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In addition, a method of manufacturing such a spectacle lens and a semi-finished lens blank used in the method are provided.</description><subject>CONTACT LENSES</subject><subject>OPTICS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE</subject><subject>SPECTACLES</subject><subject>SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES</subject><subject>TRANSPORTING</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNirEKwjAUALs4iPoPD1wtNK3i_ExeTDB5FZPMpWicRAv1_xFEHJycDu5uWlw8RdMqaDV45KRRxnSyvAeEcCQZUToCRxxWoC3bYEhBYpniTwZkBYG8Lb_bW-8c8mFeTK79bcyLD2fFUlOUpszDo8vj0J_zPT-7FOqqFs1abDcViua_6wXZXjTf</recordid><startdate>20211104</startdate><enddate>20211104</enddate><creator>Gall, Michael</creator><creator>Nolan, Angela</creator><scope>EVB</scope></search><sort><creationdate>20211104</creationdate><title>METHOD OF MANUFACTURING A SPECTACLE LENS, FINISHED UNCUT SPECTACLE LENS AND SEMI-FINISHED LENS BLANK</title><author>Gall, Michael ; Nolan, Angela</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2021341750A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2021</creationdate><topic>CONTACT LENSES</topic><topic>OPTICS</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE</topic><topic>SPECTACLES</topic><topic>SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES</topic><topic>TRANSPORTING</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>Gall, Michael</creatorcontrib><creatorcontrib>Nolan, Angela</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Gall, Michael</au><au>Nolan, Angela</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD OF MANUFACTURING A SPECTACLE LENS, FINISHED UNCUT SPECTACLE LENS AND SEMI-FINISHED LENS BLANK</title><date>2021-11-04</date><risdate>2021</risdate><abstract>A finished uncut spectacle lens has a curved front surface including an optical bowl with a convex curvature and a peripheral lentic zone surrounding the optical bowl. The curvature of the curved front surface in the peripheral lentic zone is flatter than in the optical bowl. The optical bowl size is large enough that a lens filling the entire frame can be glazed from it. The inclusion of a flatter peripheral lentic zone enables a larger diameter of the finished unglazed lens (d) with larger edge thickness than would be possible if the same back surface was cut on a semi-finished blank having a uniform spherical front, without compromise to the finished lens center thickness. In addition, a method of manufacturing such a spectacle lens and a semi-finished lens blank used in the method are provided.</abstract><oa>free_for_read</oa></addata></record>
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subjects	CONTACT LENSES OPTICS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
title	METHOD OF MANUFACTURING A SPECTACLE LENS, FINISHED UNCUT SPECTACLE LENS AND SEMI-FINISHED LENS BLANK
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