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WO2025175336A1 - Système de ventilation à désembuage de lunettes - Google Patents

Système de ventilation à désembuage de lunettes

Info

Publication number
WO2025175336A1
WO2025175336A1 PCT/AU2025/050113 AU2025050113W WO2025175336A1 WO 2025175336 A1 WO2025175336 A1 WO 2025175336A1 AU 2025050113 W AU2025050113 W AU 2025050113W WO 2025175336 A1 WO2025175336 A1 WO 2025175336A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
eyewear
defogging
frame
vents
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.)
Pending
Application number
PCT/AU2025/050113
Other languages
English (en)
Inventor
William Ross
Joseph Guo
Muhammad Uneeb
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.)
Minimis Technologies Ltd Pty
Original Assignee
Minimis Technologies Ltd Pty
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
Priority claimed from AU2024900429A external-priority patent/AU2024900429A0/en
Application filed by Minimis Technologies Ltd Pty filed Critical Minimis Technologies Ltd Pty
Publication of WO2025175336A1 publication Critical patent/WO2025175336A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A61F9/028—Ventilation means
    • 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
    • G02C11/08—Anti-misting means, e.g. ventilating, heating; Wipers
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts

Definitions

  • This invention relates generally to a type of defogging ventilation system for eyewear. More particularly, this invention relates to an eyewear defogging system featuring a frame with integrated vents that direct a curtain of airflow tangentially across the lens to efficiently remove condensation .
  • Eyewear fogging occurs when water vapour from warm air condenses on the cooler surface of eyeglasses, forming tiny droplets that scatter light and reduce visibility through the lenses.
  • Some anti-fogging solutions for eyewear incorporate ventilation vents that facilitate air circulation including US10335317B2 (Carter et. al.) 2019-07-02 which, with reference Figure 2 has a nose bridge arrangement allowing ventilation around the nose.
  • US5610668A (Mage) 1997-03-1 1 proposes an alternative arrangement wherein the eyewear has side apertures 34 seen in Figure 3 wherein air escaping therethrough draws in air across rear surfaces of the lens.
  • US5898468A (Mage) 1999- 04-27 has a similar arrangement but which also features a central inlet apertures.
  • US6550914B1 (Kopfer) 2003-05-01 proposes an arrangement which has a central ventilation inlet opening 18 and a series of outlet grooves 50 through which air escapes.
  • US6783235B1 (Lin) 2004-08-31 proposes a further arrangement having side drainage holes and guiding portions which encourage airflow via the drainage holes.
  • the present invention seeks to provide a way to overcome or substantially ameliorate at least some of the deficiencies of the prior art, or to at least provide an alternative.
  • the described eyewear defogging system features a frame equipped with multiple vents that facilitate airflow across the lens to prevent condensation.
  • vents are designed with inlets on the frame's front and outlets positioned behind the lens, directing a curtain of air tangentially across the lens's rear surface to remove moisture effectively.
  • the system is particularly efficient when the wearer is moving forward, such as during running or cycling, where air pressure funnels through the inlets and out across the lens, ensuring a clear view by preventing fog formation.
  • the frame's design which preferably engages the lens at the top edge while leaving the bottom edge exposed, allows for a continuous flow of air from top to bottom across the lens, creating a substantially laminar airflow curtain that enhances visibility by keeping the lens clear of condensation.
  • vents preferably cover a significant portion of the lens width, ensuring widespread defogging.
  • the frame can be a single piece, often made from materials like injection- moulded plastic, featuring a slot at the top edge to securely hold the lens and possibly extending around the sides for additional support.
  • This system optimises the space between the outlets and the lens's surface, typically around 2mm, to maximise defogging efficiency without compromising the frame's sleek profile.
  • vents may also be designed to narrow from the inlet to the outlet, increasing escape air velocity for a more effective defogging action.
  • the present eyewear defogging system offers several significant advantages over previous anti-fogging solutions by incorporating an approach to ventilation that enhances air circulation across the lens, thereby effectively preventing condensation.
  • the current system employs a frame with integrated vents that direct a curtain of air tangentially across the rear surface of the lens. This design ensures a more effective removal of moisture compared to the indirect methods of air circulation found in earlier patents.
  • the present system allows for a continuous, substantially laminar flow of air across the entire surface of the lens. This is a significant improvement over the piecemeal approach of drawing air across the lens's rear surfaces through specific apertures, which may not provide uniform defogging.
  • the present invention improves upon the central ventilation inlet and outlet grooves system of Kopfer's US6550914B1 , by offering a more streamlined and effective method of directing airflow across the lens to remove fog.
  • the present system's design ensures that air is not just escaping through grooves but is actively pushed across the lens's surface, enhancing the defogging effect.
  • an eyewear defogging ventilation system comprising a frame engaging a lens, wherein the frame comprises a plurality of vents therealong, each vent exposing an inlet through a front face of the frame leading to an outlet behind the lens, wherein the outlets of the vents are orientated to direct a curtain of air across a rear surface of the lens.
  • the frame bridges across a top edge of the lens, wherein the outlets of the vents are directed downwardly to facilitate a continuous flow of air across the lens surface.
  • the frame only engages the top edge of the lens, leaving a bottom edge exposed, allowing unobstructed airflow across the rear surface of the lens.
  • vents may be positioned across more than half the width of the lens and, preferably, more than three-quarters of the width of the lens to ensure widespread defogging coverage.
  • the frame may be integrally formed as a single piece, defining a slot for engaging an edge of the lens, wherein the vents transition internally within the frame around the slot.
  • an inlet section of each vent is positioned closer to a top edge of the slot, while an outlet section is positioned nearer to a rear edge of the slot to optimise airflow direction.
  • At least one vent is constricted from an inlet to an outlet thereof to increase air velocity, thereby enhancing the defogging effect.
  • the eyewear defogging ventilation system may comprise a lens that is removably secured within the slot of the frame, allowing for easy replacement or interchangeability.
  • removal of the lens does not obstruct or interfere with the function of the vents, ensuring continuous operation of the defogging system.
  • the lens may be secured within the slot by an interference fit, a clip mechanism, or other suitable retention means.
  • the eyewear defogging ventilation system may comprise a locking mechanism configured to retain the lens securely within the frame while allowing tool-free removal for replacement or cleaning.
  • Figure 1 shows a perspective disassembled view of an eyewear defogging ventilation system in accordance with an embodiment
  • Figures 2 and 3 shows a cross-section of a vent of a frame of the eyewear
  • Figure 4 shows a cross-section of a lens and the frame of the eyewear.
  • Figure 1 shows an eyewear defogging ventilation system 100 comprising a frame 101 engaging a lens 102.
  • the frame 101 comprises a plurality of vents 103 therealong.
  • Each vent 103 exposes an inlet 104 through a front face 105 of the frame 101 and leads to an outlet 106 behind the lens.
  • the outlets 106 are orientated to direct air across a rear surface of the lens 102 thereby removing condensation.
  • Each outlet 106 is preferably orientated substantially tangentially with respect to a rear surface 107 of the lens 102.
  • this preferred arrangement creates a continual downward moving curtain of substantially laminar airflow 1 10 which is thereby able to freely flow from top to bottom across the entire surface of the lens 102 and escape from the lower edge 109 without interruption .
  • the frame 101 may be integrally formed as one piece, such as from injection moulded plastic.
  • the frame 101 may define a slot 1 1 1 which accepts the top edge 108 of the lens 102.
  • the slot 1 1 1 may transition around the sides of the frame 101 to engage the sides 1 12 of the lens also.
  • the lens 102 is engaged by the frame 101 by an interference fit in the slot 1 1 1 , clip mechanism or the like so as to be removable and wherein removing of the lens 102 does not interfere with the vents 104 which run through the frame 101 .
  • the integrally formed vents 103 transition around the slot 1 1 1 .
  • an inlet section 1 13 of the vent 103 is preferably closer to a top edge 1 14 of the slot 1 1 1 as an outlet section 1 15 is to a rear edge 1 16 of the slot 1 1 1.
  • This arrangement minimises the height of the frame 101 and spaces the outlets 106 appropriately from the rear surface 107 of the lens 1024 defogging, such as approximately 2 mm.
  • the vent 103 is constricted from the inlet 104 to the outlet 106. This constriction increases the velocity of air passing through the vent 103, thereby increasing the velocity of air across the rear surface 107 of the lens 102 for enhanced defogging effect.
  • the frame 101 may engage around the bottom edge of the lens 102 and further preferably a bottom section of the frame 101 along the bottom edge of the lens is substantially flush with a rear surface of the lens .
  • the eyewear defogging ventilation system 100 operates effectively to mitigate lens fogging under various conditions.
  • the frame 101 engages the top edge 108 of the lens 102, leaving the bottom edge 109 exposed.
  • the vents 103 positioned along the frame 101 remain unobstructed, allowing unrestricted airflow.
  • a cyclist wearing the eyewear system 100 encounters rapid temperature changes when transitioning from a cool outdoor environment to a warm, humid setting. Without adequate ventilation, the lenses 102 may fog, impairing visibility.
  • the integration of the vents 103 ensures that as the cyclist gains speed, the increased air pressure enhances the defogging effect by funnelling more air through the system. The velocity of the airflow across the lens 102 surface increases due to the constriction within each vent 103, further improving moisture removal.
  • the eyewear system 100 is also effective in static or low-movement conditions. When the wearer is stationary, natural convection currents and minor head movements induce sufficient airflow to initiate passive ventilation. This allows the system to function even in conditions where external wind forces are minimal, such as when waiting in a queue, wearing a face mask, or engaging in light activity. In such cases, the airflow facilitated by the inlets 104 and outlets 106 ensures that minor condensation is continuously dissipated, maintaining clear vision.
  • the eyewear defogging system 100 provides a consistent and automatic solution.
  • the airstream facilitated by the vents 103 prevents fog from forming, even in extreme conditions.
  • the wearer does not need to manually wipe the lenses 102 or apply anti-fog treatments, making the system highly practical for prolonged use.
  • the eyewear system 100 may be used in combination with prescription or nonprescription lenses 102, and its design allows for easy removal and replacement of the lens 102 without interference with the integrated venting system.
  • the lens 102 may be secured in a slot 1 1 1 within the frame 101 , allowing for straightforward interchangeability.
  • the preferred configuration of the frame 101 engaging only the top edge 108 of the lens 102, ensures that airflow moves uninterrupted from top to bottom, optimising the defogging effect.
  • This arrangement in conjunction with the carefully designed vent geometry, offers superior performance compared to prior art solutions relying on isolated vent placements or passive diffusion methods.
  • the eyewear defogging system 100 thus provides a reliable, maintenance-free, and effective solution for reducing fogging in various real-world scenarios, significantly enhancing user experience and visual clarity.

Landscapes

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

Abstract

Le présent système de désembuage de lunettes selon l'invention adresse la formation de buée de lentille à travers une monture équipée de multiples évents de ventilation qui sont positionnés pour créer un flux d'air dirigé à travers la surface arrière de la lentille, améliorant significativement l'élimination de condensation. Contrairement aux procédés précédents qui sont soulagés sur la circulation d'air indirect ou des placements d'ouverture spécifiques, ce système assure un écoulement d'air laminaire continu qui supprime efficacement l'humidité sur toute la surface de la lentille. L'orientation stratégique et la conception des évents, y compris leur alignement tangentiel avec la surface de lentille et l'utilisation d'un mécanisme de constriction pour augmenter la vitesse de l'air, offrent un effet de désembuage supérieur. Cette avancée fournit à des utilisateurs de lunettes une vision plus claire et une solution plus fiable pour lutter contre la formation de buée de lentille dans diverses conditions environnementales.
PCT/AU2025/050113 2024-02-21 2025-02-13 Système de ventilation à désembuage de lunettes Pending WO2025175336A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2024900429 2024-02-21
AU2024900429A AU2024900429A0 (en) 2024-02-21 Eyewear defogging ventilation system

Publications (1)

Publication Number Publication Date
WO2025175336A1 true WO2025175336A1 (fr) 2025-08-28

Family

ID=96846207

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2025/050113 Pending WO2025175336A1 (fr) 2024-02-21 2025-02-13 Système de ventilation à désembuage de lunettes

Country Status (1)

Country Link
WO (1) WO2025175336A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6138286A (en) * 1999-04-14 2000-10-31 Scott Usa, Inc. Goggle having a tinted plastic lens
US6783235B1 (en) * 2004-01-21 2004-08-31 Gazelle Corporation Fog-free protective glasses
US20080047050A1 (en) * 2006-08-04 2008-02-28 I.E. Manufacturing Llc Fog-resistant goggles
US20110001921A1 (en) * 2006-11-30 2011-01-06 Pasquale Matera Eyewear device and method of making the same
US20110258760A1 (en) * 2010-04-22 2011-10-27 Salomon S.A.S. Protective mask for the practice of outdoor sports
US20220082869A1 (en) * 2019-11-05 2022-03-17 Brent Sheldon Eyewear Having Multidirectional Venting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6138286A (en) * 1999-04-14 2000-10-31 Scott Usa, Inc. Goggle having a tinted plastic lens
US6783235B1 (en) * 2004-01-21 2004-08-31 Gazelle Corporation Fog-free protective glasses
US20080047050A1 (en) * 2006-08-04 2008-02-28 I.E. Manufacturing Llc Fog-resistant goggles
US20110001921A1 (en) * 2006-11-30 2011-01-06 Pasquale Matera Eyewear device and method of making the same
US20110258760A1 (en) * 2010-04-22 2011-10-27 Salomon S.A.S. Protective mask for the practice of outdoor sports
US20220082869A1 (en) * 2019-11-05 2022-03-17 Brent Sheldon Eyewear Having Multidirectional Venting

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