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WO2007017751A1 - Lentille pour masques et lunettes de ski - Google Patents

Lentille pour masques et lunettes de ski Download PDF

Info

Publication number
WO2007017751A1
WO2007017751A1 PCT/IB2006/002223 IB2006002223W WO2007017751A1 WO 2007017751 A1 WO2007017751 A1 WO 2007017751A1 IB 2006002223 W IB2006002223 W IB 2006002223W WO 2007017751 A1 WO2007017751 A1 WO 2007017751A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
around
base
radius
goggles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2006/002223
Other languages
English (en)
Inventor
Luigi Francavilla
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Luxottica SRL
Original Assignee
Luxottica SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luxottica SRL filed Critical Luxottica SRL
Priority to EP06795252A priority Critical patent/EP1924881A1/fr
Publication of WO2007017751A1 publication Critical patent/WO2007017751A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/02—Goggles
    • 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

  • This invention relates to a lens for masks and goggles and in particular to a lens with uniform spherical curvature .
  • the invention refers to lenses developed for specialist sports use, dedicated for example to skiing or mountain bike riding in which precise optical resolution combined with satisfactory aerodynamic penetration is required.
  • Lenses of the known type can be cylindrical, that is to say preferably consisting of a portion of a cylindrical surface, toroidal, that is to say preferably consisting of a portion of a toroidal surface, or spherical, that is to say formed by a portion of a spherical surface.
  • Toroidal and spherical lenses are therefore characterised by two radii, Rl and R2 , relative respectively to the curvature of the lens on a substantially horizontal plane, that is to say around a substantially vertical axis, and to the curvature of the lens on a substantially vertical plane, that is to say around a substantially horizontal axis; as far as this invention is concerned, that is to say in the case of spherical lenses, the radii Rl and R2 are identical to each other and hereafter commonly indicated with R.
  • the curvature of lenses can not only be characterised and expressed as the radius, but also in terms of “base” .
  • Base is generally intended as the relationship between a constant and the curvature radius of the lens expressed in millimetres, whether it is relative to a curvature on the horizontal plane of the lens or to a curvature on the vertical plane (in the case of spherical lenses the base identifies both the curvatures which are identical) .
  • Lenses with the above-mentioned bases have some drawbacks, particularly in relation to the statistically defined measurements of the human face .
  • Lenses with a 7 base are particularly wrap-around and generally suited to specifically sports use as they are too “closed” and unattractive for normal use.
  • 6 base lenses do not provide perfect protection of the user's face, being too open at the sides, and they are not sufficiently aerodynamic in sports use.
  • the main purpose of the present invention is to propose an ergonomically optimised lens able to overcome the aforesaid drawbacks .
  • One aim of the invention is to provide a lens which follows the statistically defined profile of a generic user in a balanced way.
  • Another aim of the invention is to provide a lens that ensures adequate ventilation and offers adequate peripheral protection of the user's face.
  • Yet another aim is to provide a lens that combines attractiveness and comfort in order to increase the number of potential users .
  • Figure 1 is a schematic perspective view of a spherical lens according to the present invention, mounted in a frame forming a single-lens mask;
  • Figure 2 illustrates the lens of Figure 1 in a schematic plan view from above;
  • Figure 3 illustrates the lens of Figure 1 in a schematic side view
  • Figure 4 is a schematic perspective view of a lens according to the present invention, divided into two portions mounted in a frame forming double-lens goggles;
  • Figure 5 illustrates the lens of Figure 4 in a schematic plan view from above .
  • the numeral 1 denotes a spherical lens according to the present invention.
  • the lens 1 is defined as a portion of a spherical surface S illustrated schematically with dashed lines in Figures 2, 3 and 5, with an external radius R which identifies the curvature radius of the lens .
  • the lens 1 is spherical in the preferred embodiment of the invention the curvature radius R is the same for each section of the surface S.
  • the lens 1 consists of a single portion 2 attached to a frame 3, shown in dashed lines not being part of this invention, to form a single-lens mask 4.
  • the lens 1 substantially extends between a pair of sidepieces 5 which support the mask 4 on the ears, not shown, of a generic user.
  • curvature radius R is the same both in plan view and in side view.
  • the lens 1 consists of two portions 5, 6 attached to a relative frame 7 to form double-lens goggles .
  • the lens 1, whether it consists of a single portion 2 or- of two portions 5, 6, has a curvature radius R between around 78.06 mm and around 83.01 mm, preferably between around 78.65 mm and around 82.36 mm, in particular around 80.47 mm.
  • these curvatures make the lens 1 aerodynamic and able to ensure sufficient ventilation of the user's face, so as to allow sports use without the risk of misting over.
  • the curvature can be expressed in terms of base: the curvature radius, expressed in millimetres, of the front or outer surface 9 of the lens 1 is substantially equal to 523 divided by the base, that is to say:
  • the outer surface of the lens 1 substantially consists of a spherical dioptric surface that separates the air (first means) from the material (second means) that forms the lens 1.
  • the dioptric power on the air side, expressed in diopters, of this dioptric surface can be calculated, without taking into account which side the rays of light are coming from, by means of the equation:
  • R where n is a constant, R the curvature radius of the reference spherical surface expressed in metres and 1 is the result of having considered the air as the first means .
  • the lens 1 according to the present invention preferably has a base between around 6.3 and 6.7.
  • the base is preferably between around 6.35 and 6.65 and in particular it is around 6.5.
  • the preferred curvature for the spherical lens according to the present invention is therefore 6.5 base .
  • the lenses 1 for masks and goggles can have various profiles not shown and not described in detail as they are not part of this invention.

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eyeglasses (AREA)

Abstract

Selon cette invention, une lentille (1) pour lunettes et masques de ski est formée d'une partie d'une surface sphérique S d'un rayon R, avec une base comprise entre environ 6,3 et 6,7, ladite base étant conçue comme la relation entre 523 et le rayon R qui représente le rayon externe de la surface sphérique.
PCT/IB2006/002223 2005-08-05 2006-07-31 Lentille pour masques et lunettes de ski Ceased WO2007017751A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06795252A EP1924881A1 (fr) 2005-08-05 2006-07-31 Lentille pour masques et lunettes de ski

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO2005A000524 2005-08-05
ITBO20050524 ITBO20050524A1 (it) 2005-08-05 2005-08-05 Lente per maschere ed occhiali

Publications (1)

Publication Number Publication Date
WO2007017751A1 true WO2007017751A1 (fr) 2007-02-15

Family

ID=37150839

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/002223 Ceased WO2007017751A1 (fr) 2005-08-05 2006-07-31 Lentille pour masques et lunettes de ski

Country Status (3)

Country Link
EP (1) EP1924881A1 (fr)
IT (1) ITBO20050524A1 (fr)
WO (1) WO2007017751A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9208608B2 (en) 2012-05-23 2015-12-08 Glasses.Com, Inc. Systems and methods for feature tracking
US9236024B2 (en) 2011-12-06 2016-01-12 Glasses.Com Inc. Systems and methods for obtaining a pupillary distance measurement using a mobile computing device
US9286715B2 (en) 2012-05-23 2016-03-15 Glasses.Com Inc. Systems and methods for adjusting a virtual try-on
US9483853B2 (en) 2012-05-23 2016-11-01 Glasses.Com Inc. Systems and methods to display rendered images

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997021138A1 (fr) * 1995-12-05 1997-06-12 Oakley, Inc. Verre protecteur corrige optiquement pour casque de securite
US6009564A (en) * 1998-06-24 2000-01-04 Oakley, Inc. Optically corrected goggle
US6129435A (en) * 1998-04-09 2000-10-10 Nike, Inc. Decentered protective eyewear
WO2002019013A1 (fr) * 2000-08-25 2002-03-07 Greenhouse Grown Products, Inc. Verres de forme torique et ensemble lunettes protectrices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997021138A1 (fr) * 1995-12-05 1997-06-12 Oakley, Inc. Verre protecteur corrige optiquement pour casque de securite
US6129435A (en) * 1998-04-09 2000-10-10 Nike, Inc. Decentered protective eyewear
US6009564A (en) * 1998-06-24 2000-01-04 Oakley, Inc. Optically corrected goggle
US20040095551A1 (en) * 1999-08-26 2004-05-20 Pierotti Elizabeth M. Radically shaped lenses and goggle assemblies and glasses employing same
WO2002019013A1 (fr) * 2000-08-25 2002-03-07 Greenhouse Grown Products, Inc. Verres de forme torique et ensemble lunettes protectrices

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9236024B2 (en) 2011-12-06 2016-01-12 Glasses.Com Inc. Systems and methods for obtaining a pupillary distance measurement using a mobile computing device
US9208608B2 (en) 2012-05-23 2015-12-08 Glasses.Com, Inc. Systems and methods for feature tracking
US9235929B2 (en) 2012-05-23 2016-01-12 Glasses.Com Inc. Systems and methods for efficiently processing virtual 3-D data
US9286715B2 (en) 2012-05-23 2016-03-15 Glasses.Com Inc. Systems and methods for adjusting a virtual try-on
US9311746B2 (en) 2012-05-23 2016-04-12 Glasses.Com Inc. Systems and methods for generating a 3-D model of a virtual try-on product
US9378584B2 (en) 2012-05-23 2016-06-28 Glasses.Com Inc. Systems and methods for rendering virtual try-on products
US9483853B2 (en) 2012-05-23 2016-11-01 Glasses.Com Inc. Systems and methods to display rendered images
US10147233B2 (en) 2012-05-23 2018-12-04 Glasses.Com Inc. Systems and methods for generating a 3-D model of a user for a virtual try-on product

Also Published As

Publication number Publication date
ITBO20050524A1 (it) 2007-02-06
EP1924881A1 (fr) 2008-05-28

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