WO1998018042A1 - Verre en une seule piece pour lunettes - Google Patents
Verre en une seule piece pour lunettes Download PDFInfo
- Publication number
- WO1998018042A1 WO1998018042A1 PCT/FR1997/001876 FR9701876W WO9818042A1 WO 1998018042 A1 WO1998018042 A1 WO 1998018042A1 FR 9701876 W FR9701876 W FR 9701876W WO 9818042 A1 WO9818042 A1 WO 9818042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass
- central part
- glass according
- printing
- curvature
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/02—Ornaments, e.g. exchangeable
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
Definitions
- the present invention relates to a glass in one piece, the central part of which is as close as possible to the forehead of a wearer. This central part is therefore substantially curved or even flat.
- a glass in one piece has a very satisfactory optical quality and an exceptional eye field for the wearer.
- the present invention also relates to a method for decorating such a glass in one piece on at least half of its surface and a glass thus obtained.
- these glasses or masks, comprise a glass traditionally of spoleric shape in one piece most often made of a plastic material.
- the second document relates to a glass in one piece which is curved along each of two substantially perpendicular axes to form a glass of generally toroidal configuration.
- cylindrical glasses we could decorate them by different techniques but always on a very small surface: in fact, the glass returning to the temples of the wearer and having a uniform radius of curvature, moves away from the front part, which limits the field of impression for example between the two eyes.
- One of the aims of the present invention is therefore to provide a glass in a single piece, the shape of which makes it possible, on the one hand, to optimize the printing surface while not interfering with vision and, on the other hand, to use all printing techniques to decorate this glass without impeding vision.
- a single piece lens for glasses which is, according to the present invention, characterized in that it comprises a central part of large radius of curvature and two lateral parts of smaller radius of curvature, at the end of which are fixed means for holding such a telescope on a carrier.
- the lower edge of this glass comprises, substantially in its middle, a cutout, or arch opening, allowing the mounting of this glass on the nose of a wearer.
- the central part and the curved lateral parts each define a part of the wall of a cylinder.
- such a glass has a decoration over at least half of its surface.
- the central part has a radius of curvature of at least 120 mm and is limited by a cord between 90 and 135 mm.
- the radius of curvature of the central part is between 120 and 150 mm.
- the radius of curvature of the central part is infinite: in this case the latter is flat.
- Each lateral part, in the shape of an arc of a circle, is tangentially connected to the central part and extends so that the distance between their free ends is between 130 and 150 mm.
- the present invention also relates to a method for decorating such a glass in a single piece, according to which this printing is carried out by hot transfer in recovery or directly in a mold during the injection of the plastic material such as a polycarbonate.
- FIG. 2 is a top view of the glass according to Figure 1;
- FIG. 3 is a top view of a glass according to a second embodiment of the present invention.
- a one-piece lens for glasses according to the present invention comprises a central part 2 limited on either side by a right side part 3 and a left side part 4, the orientation being relative to an observer looking at this glass 1 from the front.
- the central part 2 according to the embodiment shown in Figures 1 and 2 is slightly curved or is flat as shown in Figure 3. It has on its lower edge, in the middle area, a cutout, or arch opening, 5 allowing mounting this glass 1 on the nose of a wearer.
- the cord of this central part 2 is between 90 and 135 mm.
- the radius of curvature of the external face of this central part 2 is greater than 120 mm: it is, for example, between 120 and 150 mm in the case of a curved central part or is infinite for a flat central part.
- Such dimensions make it possible to place the central part 2 of the lens 1 as close as possible to the forehead of a wearer and therefore to benefit from a maximum eye field.
- the window for each eye is of reduced area since the glass is close to the eyes.
- the right 3 and left 4 side parts are cylinder parts tangentially connecting to the central part 2: the external surface of such a glass is therefore uniformly continuous.
- Each side part 3 and 4 is in an arc, is connected tangentially to the central part 2 and extends so that the distance between their free ends is between 130 and 150 mm.
- the distance above is greater than the cord of the central part.
- the radius of curvature of these lateral parts is identical: it is at most 50 mm and preferably between 10 and 25 mm.
- the distance between the free ends of these right 3 and left 4 side parts is between 130 and 150 mm.
- the lateral parts 3 and 4 may be a single arc or formed by several successive arcs.
- the thickness of such a glass 1 in a single piece is not constant throughout its curvature.
- this thickness is comprised between 1, 5 and 2 mm while decreasing from the middle zone towards the lateral parts.
- the Gullstrand formula makes it possible to calculate the differential thickness at each point of this central part 2 in order to have the best optical quality.
- the free ends of the right 3 and left 4 side parts each comprise means for holding this glass 1 in position on a carrier.
- these ends may be of greater thickness than the rest of the glass 1.
- such a glass 1 in one piece according to the present invention can be decorated over more than half of its surface.
- various known methods can be used such as screen printing, dry offset or pad printing.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97911301A EP1008011A1 (fr) | 1996-10-22 | 1997-10-20 | Verre en une seule piece pour lunettes |
AU48725/97A AU4872597A (en) | 1996-10-22 | 1997-10-20 | Single-piece glass for spectacles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR96/12798 | 1996-10-22 | ||
FR9612798A FR2754915B1 (fr) | 1996-10-22 | 1996-10-22 | Verre en une seule piece pour lunettes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998018042A1 true WO1998018042A1 (fr) | 1998-04-30 |
Family
ID=9496852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/001876 WO1998018042A1 (fr) | 1996-10-22 | 1997-10-20 | Verre en une seule piece pour lunettes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1008011A1 (fr) |
AU (1) | AU4872597A (fr) |
FR (1) | FR2754915B1 (fr) |
WO (1) | WO1998018042A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7448750B2 (en) * | 2006-09-22 | 2008-11-11 | Oakley, Inc. | Quadrilateral lens |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4741611A (en) * | 1981-03-26 | 1988-05-03 | Pro-Tec, Inc. | Eyeglasses adapted for sports and protective use |
FR2665961A1 (fr) * | 1990-08-14 | 1992-02-21 | Lafon Josiane | Lunettes decoratives. |
US5208614A (en) * | 1990-11-30 | 1993-05-04 | Oakley, Inc. | Concavely indented lenses for eyeware |
DE4139253A1 (de) * | 1991-11-29 | 1993-06-03 | Otmar Giehl | Verfahren zur herstellung von brillenfassungen |
GB2281635A (en) * | 1993-09-01 | 1995-03-08 | Gentex Optics Inc | Aspheric/atoric wide field sunglasses and safety eyewear. |
-
1996
- 1996-10-22 FR FR9612798A patent/FR2754915B1/fr not_active Expired - Fee Related
-
1997
- 1997-10-20 WO PCT/FR1997/001876 patent/WO1998018042A1/fr not_active Application Discontinuation
- 1997-10-20 AU AU48725/97A patent/AU4872597A/en not_active Abandoned
- 1997-10-20 EP EP97911301A patent/EP1008011A1/fr not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4741611A (en) * | 1981-03-26 | 1988-05-03 | Pro-Tec, Inc. | Eyeglasses adapted for sports and protective use |
FR2665961A1 (fr) * | 1990-08-14 | 1992-02-21 | Lafon Josiane | Lunettes decoratives. |
US5208614A (en) * | 1990-11-30 | 1993-05-04 | Oakley, Inc. | Concavely indented lenses for eyeware |
DE4139253A1 (de) * | 1991-11-29 | 1993-06-03 | Otmar Giehl | Verfahren zur herstellung von brillenfassungen |
GB2281635A (en) * | 1993-09-01 | 1995-03-08 | Gentex Optics Inc | Aspheric/atoric wide field sunglasses and safety eyewear. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7448750B2 (en) * | 2006-09-22 | 2008-11-11 | Oakley, Inc. | Quadrilateral lens |
Also Published As
Publication number | Publication date |
---|---|
FR2754915A1 (fr) | 1998-04-24 |
AU4872597A (en) | 1998-05-15 |
EP1008011A1 (fr) | 2000-06-14 |
FR2754915B1 (fr) | 1998-12-24 |
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