WO2002018986A2 - Photochromic visors - Google Patents

Photochromic visors Download PDF

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Publication number
WO2002018986A2
WO2002018986A2 PCT/GB2001/003887 GB0103887W WO0218986A2 WO 2002018986 A2 WO2002018986 A2 WO 2002018986A2 GB 0103887 W GB0103887 W GB 0103887W WO 0218986 A2 WO0218986 A2 WO 0218986A2
Authority
WO
WIPO (PCT)
Prior art keywords
photochromic
film
polymer
photochromic film
visor
Prior art date
Application number
PCT/GB2001/003887
Other languages
French (fr)
Other versions
WO2002018986A3 (en
Inventor
June Barrack
Original Assignee
June Barrack
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 June Barrack filed Critical June Barrack
Priority to AU2001287844A priority Critical patent/AU2001287844A1/en
Publication of WO2002018986A2 publication Critical patent/WO2002018986A2/en
Publication of WO2002018986A3 publication Critical patent/WO2002018986A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/18—Face protection devices
    • A42B3/22—Visors
    • A42B3/226—Visors with sunscreens, e.g. tinted or dual visor
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/23—Photochromic filters

Definitions

  • the present invention relates to photochromic visors which are able to react to changing light conditions, particularly for use on motorcyclist's helmets.
  • This invention realises that it would be beneficial to provide a method of producing photochromic visors, particularly suited for use on motorcycle helmets, which overcomes the abovementioned problems.
  • a photochromic film that can be applied to visors, comprising a polymer which contains photochromic material within a polymer matrix
  • a photochromic film that can be applied to visors, comprising a photochromic material coated onto the surface of a polymer film.
  • the polymer which either contains the photochromic material or has the photochromic material coated onto it is selected from the list; Polyolefin Vinyl Polyester Polycarbonate or a co-polymer of the above
  • the photochromic material is selected from one or more of the list; Fulgide Spiropyran Spirooxazine Pyran Oxazine Bianthrone
  • the polymer which either contains the photochromic material or has the photochromic material coated onto it is a ethylene/vinylacetate co-polymer with a vinylacetate content of between 10% and 25% by mass.
  • the photochromic material is contained within the matrix at a level of between 0.01% and 5% by mass.
  • the photochromic film is also coated with an anti-scratch surface coating.
  • the photochromic film may be laminated to another polymer support film to which is applied an anti- scratch surface coating.
  • the polymer support material is an engineering plastic such as polyethylene terephthalate .
  • the photochromic film will be added to visors made from polycarbonate material.
  • the photochromic film and the visors that the film is added to will comply, where possible, with both British and European Standards for this type of product.
  • the photochromic film will be added to the outer surface of a visor by applying a film which has photochromic material contained within a polymer matrix using a permanent optically clear adhesive.
  • a second option is that the photochromic film is added to the outer surface of a visor by applying a film which has been surface coated with photochromic material, again using a permanent optically clear adhesive.
  • photochromic life is related to the amount of use and exposure to UV light, it is preferable that the photochromic film will have a surface coating treatment that will assist in providing photochromic properties for a minimum of one year.
  • preservative materials may be added to the photochromic material to preserve photochromic qualities.
  • the preservative materials may be from the list of; HALS (hindered amine light stabilisers) UV absorbers Antioxidants
  • the preservative materials are added at levels of 0.05% to 25% by mass.
  • Figure 1 is a plan view of a visor which has a polymer film attached, and where a photochromic material is held within the matrix of the polymer film;
  • Figure 2 is an exploded view-cf the polymer matrix containing the photochromic material (note that the photochromic material is molecularly dispersed in the polymer) ; and Figure 3 shows a plan view of a visor which has a polymer film attached, and where there is a coating of photochromic material on the surface of the polymer film.
  • Figure 4 shows a cross-section view of a photochromic film according to an embodiment of the invention where a polymer and photochromic material are mixed to make up one layer.
  • Figure 5 shows a cross-section view of a photochromic film according to an embodiment of this invention where there are separate polymer and photochromic layers.
  • Figure 6 is a plan view of a visor which has a polymer film attached, where a photochromic material is held within the matrix of the polymer film and where the polymer film containing the photochromic material is laminated to another polymer.
  • Figure 7 shows a plan view of a visor which has a polymer film attached, where a photochromic material is held within the matrix of the polymer film and where the polymer film containing the photochromic material is laminated to another polymer.
  • a visor 1 is provided with a photochromic film 3 which comprises a polymer matrix 5 with a photochromic material 6 contained within it (as shown in figure 2) .
  • the visor 1 is provided with attachment holes 8 at either end so that the visor 1 is able to be de-mounted from a helmet.
  • the photochromic film 3 is produced with an anti-scratch surface material 4 on the external surface to provide protection, and an optically clear high duty adhesive 2 on the surface of the opposite side so that the photochromic film 3 is self-adhesive.
  • a peel-off back liner 7 which protects the adhesive 2, and can be removed prior to use (as shown in figure 4) .
  • an optically clear high duty adhesive 2 can be added directly to the visor 1 followed by a photochromic film 3, and then the anti-scratch coating 4 can be added last.
  • the photochromic film 3 can then be cut to the required shape and size and mounted onto the surface of the visor 1.
  • the optically clear high duty adhesive 2 will cause the photochromic film 3 to be permanently fixed to the visor 1.
  • the visor 1 can then be re-mounted onto a helmet using the attachment holes 8, to provide a visor 1 that is able to react to changes in light conditions and which complies with the guidelines set out by British and European Standards for this type of product.
  • a visor 1 again with attachment holes 8 which allow the visor 1 to be demountable from the helmet, is provided with a photochromic film 3 which comprises a polymer layer 5 with a photochromic material 6 coated onto the surface.
  • a photochromic film 3 which comprises a polymer layer 5 with a photochromic material 6 coated onto the surface.
  • the same numbers have been used to indicate the same materials as in the previous embodiment .
  • the photochromic film 3 is produced with a polymer layer 5 coated with a photochromic material 6 and then an anti-scratch surface layer 4.
  • the underside surface is provided with an optically clear adhesive layer 2 and a peel-off back liner 7 which protects the adhesive 2 and can be removed prior to use.
  • the visor 1 is de-mounted from a helmet and the photochromic film 3 is then cut to shape and attached to the visor 1 by the optically clear high duty adhesive layer 2 which is on the side of the polymer film 5 that will make contact with the visor 1.
  • the visor 1 may then be re-mounted onto the helmet and again will react to changes in light conditions and will conform, where possible, to the guidelines stated in both British and European Standards for this type of product.
  • a visor 1 with attachment holes 8 which allow the visor 1 to be demountable from the helmet, is provided with a photochromic film 3 which comprises a polymer layer 5 with a photochromic material 6 contained within the matrix of the polymer 5.
  • the upper surface is provided with an optically clear adhesive 9 and is laminated to the supporting polymer layer 10.
  • An anti- scratch layer 4 is applied to the supporting polymer layer 10.
  • the underside surface is provided with an optically clear adhesive layer 2 and a peel off back liner 7 which protects the adhesive layer 2 and can be removed prior to use (cross section view shown in figure 7) .
  • this invention provides a simple and permanent method of producing visors which are able to react to changes in light conditions. It can also be seen that this invention has the advantage to being relevant to all types of visors for any given helmet supplied by any manufacturer, and also has the advantage of producing a product that will be completely legal for road use in the UK and which complies, where possible, with the guidelines set out in the British and European Standards for this type of product.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

The present invention relates to a photochromic film (3) comprising a polymer (5) and photochromic material (6), which can be used on visors (1) so that the visor (1) is able to react to changing light conditions. In particular, the invention relates to a stick on photochromic film (3) which can be used on a motorcycle helmet visor (1).

Description

Photochromic Visors
The present invention relates to photochromic visors which are able to react to changing light conditions, particularly for use on motorcyclist's helmets.
There are many cases where it is desirable to provide a visor that is able to react to changes in light conditions, clearing as light reduces and darkening as light increases. It could be seen for example that this would be particularly useful on motorcycle helmets. Currently in the UK black visors are illegal for road use, and as the amount of sunlight changes throughout the day, a clear visor offers little protection from the glare of the sun.
One way to get around this problem is to wear sunglasses underneath a clear visor when conditions are bright, and to remove them when there is a reduction in light. However, as well as being unsuited to changeable conditions, the wearing of sunglasses under a visor is unsafe in the event of an accident. An alternative to wearing sunglasses is suggested in US Patent No US5014366 which is entitled "Enhanced Visibility Helmet". In this invention there is a visor wherein an inner and outer transparent layer sandwiches a central laminate layer of photochromic material, and this layer attempts to accommodate various environmental lighting conditions. The problem with this invention is that in practice it is extremely difficult to produce the described central laminate layer which contains a photochromic material.
US Patent Number US5652964 entitled "Photochromatic visor for use with a crash helmet" also describes a visor which is able to react to changing light conditions. Here, a photochromic material has been incorporated into the plastic of the visor. The problem with this is that it is difficult to incorporate photochromic material into the visor, and the visors need to be made specifically i.e. a standard visor can not be adapted.
This invention realises that it would be beneficial to provide a method of producing photochromic visors, particularly suited for use on motorcycle helmets, which overcomes the abovementioned problems.
It is a primary object of this invention to provide a photochromic visor, particularly suited for use with a motorcycle helmet.
It is a further object of this invention to provide a photochromic visor that will conform, where possible, to the guidelines stated in both the British and European Standards for this type of product and also will be legal for road use in the UK.
According to a first aspect of the present invention, there is provided a photochromic film that can be applied to visors, comprising a polymer which contains photochromic material within a polymer matrix
According to a first aspect of the present invention, there is provided a photochromic film that can be applied to visors, comprising a photochromic material coated onto the surface of a polymer film.
Preferably, the polymer which either contains the photochromic material or has the photochromic material coated onto it is selected from the list; Polyolefin Vinyl Polyester Polycarbonate or a co-polymer of the above
Preferably the photochromic material is selected from one or more of the list; Fulgide Spiropyran Spirooxazine Pyran Oxazine Bianthrone
Alternatively, the polymer which either contains the photochromic material or has the photochromic material coated onto it is a ethylene/vinylacetate co-polymer with a vinylacetate content of between 10% and 25% by mass.
Preferably, the photochromic material is contained within the matrix at a level of between 0.01% and 5% by mass.
Preferably, the photochromic film is also coated with an anti-scratch surface coating.
Alternatively, the photochromic film may be laminated to another polymer support film to which is applied an anti- scratch surface coating.
Preferably the polymer support material is an engineering plastic such as polyethylene terephthalate .
Most preferably, the photochromic film will be added to visors made from polycarbonate material.
Most preferably, the photochromic film and the visors that the film is added to will comply, where possible, with both British and European Standards for this type of product.
Optionally, the photochromic film will be added to the outer surface of a visor by applying a film which has photochromic material contained within a polymer matrix using a permanent optically clear adhesive.
A second option is that the photochromic film is added to the outer surface of a visor by applying a film which has been surface coated with photochromic material, again using a permanent optically clear adhesive. As photochromic life is related to the amount of use and exposure to UV light, it is preferable that the photochromic film will have a surface coating treatment that will assist in providing photochromic properties for a minimum of one year.
Alternatively, preservative materials may be added to the photochromic material to preserve photochromic qualities.
Preferably, the preservative materials may be from the list of; HALS (hindered amine light stabilisers) UV absorbers Antioxidants
Preferably the preservative materials are added at levels of 0.05% to 25% by mass.
In order to provide a better understanding of the invention, embodiments of the invention will now be described by way of example only, and with reference to the following figures, in which:
Figure 1 is a plan view of a visor which has a polymer film attached, and where a photochromic material is held within the matrix of the polymer film;
Figure 2 is an exploded view-cf the polymer matrix containing the photochromic material (note that the photochromic material is molecularly dispersed in the polymer) ; and Figure 3 shows a plan view of a visor which has a polymer film attached, and where there is a coating of photochromic material on the surface of the polymer film.
Figure 4 shows a cross-section view of a photochromic film according to an embodiment of the invention where a polymer and photochromic material are mixed to make up one layer.
Figure 5 shows a cross-section view of a photochromic film according to an embodiment of this invention where there are separate polymer and photochromic layers.
Figure 6 is a plan view of a visor which has a polymer film attached, where a photochromic material is held within the matrix of the polymer film and where the polymer film containing the photochromic material is laminated to another polymer.
Figure 7 shows a plan view of a visor which has a polymer film attached, where a photochromic material is held within the matrix of the polymer film and where the polymer film containing the photochromic material is laminated to another polymer.
In a first embodiment of the invention (as shown in figure 1) , a visor 1 is provided with a photochromic film 3 which comprises a polymer matrix 5 with a photochromic material 6 contained within it (as shown in figure 2) . The visor 1 is provided with attachment holes 8 at either end so that the visor 1 is able to be de-mounted from a helmet. In the preferred embodiment of the invention, the photochromic film 3 is produced with an anti-scratch surface material 4 on the external surface to provide protection, and an optically clear high duty adhesive 2 on the surface of the opposite side so that the photochromic film 3 is self-adhesive. There is also provided a peel-off back liner 7 which protects the adhesive 2, and can be removed prior to use (as shown in figure 4) .
Alternatively, an optically clear high duty adhesive 2 can be added directly to the visor 1 followed by a photochromic film 3, and then the anti-scratch coating 4 can be added last.
When the visor 1, which preferably is made from a polycarbonate material, is de-mounted from a helmet, the photochromic film 3 can then be cut to the required shape and size and mounted onto the surface of the visor 1. The optically clear high duty adhesive 2 will cause the photochromic film 3 to be permanently fixed to the visor 1.
The visor 1 can then be re-mounted onto a helmet using the attachment holes 8, to provide a visor 1 that is able to react to changes in light conditions and which complies with the guidelines set out by British and European Standards for this type of product.
In a second embodiment (as shown in Figure 3) , a visor 1, again with attachment holes 8 which allow the visor 1 to be demountable from the helmet, is provided with a photochromic film 3 which comprises a polymer layer 5 with a photochromic material 6 coated onto the surface. Please note in this embodiment the same numbers have been used to indicate the same materials as in the previous embodiment .
Here, the photochromic film 3 is produced with a polymer layer 5 coated with a photochromic material 6 and then an anti-scratch surface layer 4. The underside surface is provided with an optically clear adhesive layer 2 and a peel-off back liner 7 which protects the adhesive 2 and can be removed prior to use.
Again, the visor 1 is de-mounted from a helmet and the photochromic film 3 is then cut to shape and attached to the visor 1 by the optically clear high duty adhesive layer 2 which is on the side of the polymer film 5 that will make contact with the visor 1.
The visor 1 may then be re-mounted onto the helmet and again will react to changes in light conditions and will conform, where possible, to the guidelines stated in both British and European Standards for this type of product.
In a third embodiment of the present invention (as shown in figure 6) , a visor 1, with attachment holes 8 which allow the visor 1 to be demountable from the helmet, is provided with a photochromic film 3 which comprises a polymer layer 5 with a photochromic material 6 contained within the matrix of the polymer 5. The upper surface is provided with an optically clear adhesive 9 and is laminated to the supporting polymer layer 10. An anti- scratch layer 4 is applied to the supporting polymer layer 10. The underside surface is provided with an optically clear adhesive layer 2 and a peel off back liner 7 which protects the adhesive layer 2 and can be removed prior to use (cross section view shown in figure 7) .
It can be seen that there are many advantages to this invention. It provides a simple and permanent method of producing visors which are able to react to changes in light conditions. It can also be seen that this invention has the advantage to being relevant to all types of visors for any given helmet supplied by any manufacturer, and also has the advantage of producing a product that will be completely legal for road use in the UK and which complies, where possible, with the guidelines set out in the British and European Standards for this type of product.
The embodiments disclosed above are merely exemplary of the invention, which may be embodied in many different forms. Therefore, details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and for teaching one skilled in the art as to the various uses of the present invention in any appropriate manner. In particular, it should be noted that the photochromic coating should not be limited for use on motorcycle helmets.

Claims

1. A photochromic film that can be applied to visors, comprising a polymer which may contain photochromic material within a polymer matrix
2. A photochromic film as in Claim 1 wherein the photochromic material is contained within the matrix at a level of between .01% and 5% by mass.
3. A photochromic film that can be applied to visors, comprising a photochromic material coated onto the surface of a polymer film.
4. A photochromic film as in Claims 1 or 2 wherein the polymer is selected from the list; Polyolefin Vinyl Polyester Polycarbonate or a co-polymer of the above.
5. A photochromic film as in any of the previous Claims wherein the polymer is an ethylene/vinylacetate co- polymer with a vinylacetate content of between 10% and 25% by mass.
6. A photochromic film as in any of the previous Claims wherein the photochromic material is selected from one or more of the list; Fulgide Spiropyran Spirooxazine Pyran Oxazine Bianthrone
7. A photochromic film as in any of the previous Claims wherein there is an anti-scratch surface coating on the photochromic film.
8. A photochromic film as in Claims 1 to 6 wherein the photochromic film is laminated to a polymer support film to which is applied an anti-scratch surface coating.
9. A photochromic film as in Claim 8 wherein the polymer support material is an engineering plastic such as polyethylene terephthalate.
10. A photochromic film as in any of the previous Claims wherein the film is added to visors made from polycarbonate material.
11. A photochromic film as in any of the previous Claims wherein the film is added to the outer surface of a visor using permanent optically clear adhesive.
12. A photochromic film as in any of the previous Claims wherein the film has a surface coating treatment which assists in providing and preserving photochromic properties.
13. A photochromic film as in Claims 1 to 11 wherein preservative materials are added to the photochromic material .
14. A photochromic film as in Claim 13 wherein the preservative materials are selected from a list of:
HALS (hindered amine light stabilisers) UV absorbers Antioxidants
15. A photochromic film as in Claims 13 and 14 wherein the preservative materials are added at levels of 0.05% to 25% by mass.
PCT/GB2001/003887 2000-09-01 2001-08-31 Photochromic visors WO2002018986A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001287844A AU2001287844A1 (en) 2000-09-01 2001-08-31 Photochromic visors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0021380.1 2000-09-01
GB0021380A GB0021380D0 (en) 2000-09-01 2000-09-01 Photochromic visor

Publications (2)

Publication Number Publication Date
WO2002018986A2 true WO2002018986A2 (en) 2002-03-07
WO2002018986A3 WO2002018986A3 (en) 2002-05-10

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AU (1) AU2001287844A1 (en)
GB (1) GB0021380D0 (en)
WO (1) WO2002018986A2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008014529A1 (en) * 2006-08-01 2008-02-07 Teich Aktiengesellschaft Falsification-proof foil and blister pack comprising this foil
NL1033103C2 (en) * 2006-12-21 2008-06-24 Hd Inspiration Holding B V Visor with UV sensitive material.
US20120308743A1 (en) * 2011-04-22 2012-12-06 Rivera Iii Seferino Sefe Visor
EP2552267A2 (en) * 2010-03-26 2013-02-06 National Oilwell Varco, L.P. Headgear and method of using same
GB2495505A (en) * 2011-10-11 2013-04-17 Hd Inspiration Holding B V Visor with photochromatic insert
US9561684B2 (en) 2011-04-22 2017-02-07 Seferino Rivera, III System and method for varying hologram visibility
US20220400805A1 (en) * 2021-06-21 2022-12-22 Chi-Liang Wei Photochromic helmet visor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014366A (en) * 1990-02-26 1991-05-14 Discipio Sr William R Enhanced visibility helmet
WO1997006944A1 (en) * 1995-08-21 1997-02-27 Innotech, Inc. Polymeric materials for photochromic applications
US5652964A (en) * 1996-04-26 1997-08-05 Reinheardt; Chadwick L. Photochromatic visor for use with a crash helmet
DE20005143U1 (en) * 2000-03-21 2000-06-29 Berges Ruediger Gmbh Coating agent, carrier film and multi-layer film arrangement as well as display or advertising display and shading device

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
JPH0854707A (en) * 1994-08-10 1996-02-27 Masaatsu Yamamoto Optically responsive resin film for light dimming

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5014366A (en) * 1990-02-26 1991-05-14 Discipio Sr William R Enhanced visibility helmet
WO1997006944A1 (en) * 1995-08-21 1997-02-27 Innotech, Inc. Polymeric materials for photochromic applications
US5652964A (en) * 1996-04-26 1997-08-05 Reinheardt; Chadwick L. Photochromatic visor for use with a crash helmet
DE20005143U1 (en) * 2000-03-21 2000-06-29 Berges Ruediger Gmbh Coating agent, carrier film and multi-layer film arrangement as well as display or advertising display and shading device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 06, 28 June 1996 (1996-06-28) & JP 08 054707 A (MASAATSU YAMAMOTO), 27 February 1996 (1996-02-27) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008014529A1 (en) * 2006-08-01 2008-02-07 Teich Aktiengesellschaft Falsification-proof foil and blister pack comprising this foil
NL1033103C2 (en) * 2006-12-21 2008-06-24 Hd Inspiration Holding B V Visor with UV sensitive material.
WO2008075953A1 (en) * 2006-12-21 2008-06-26 Hd Inspiration Holding B.V. A visor provided with a uv-sensitive material
EP2407041A1 (en) * 2006-12-21 2012-01-18 HD Inspiration Holding B.V. A visor provided with a UV-sensitive material
US8984672B2 (en) 2006-12-21 2015-03-24 Pinlock Patent B.V. Visor provided with a UV-sensitive material
EP2552267A4 (en) * 2010-03-26 2014-07-09 Nat Oilwell Varco Lp Headgear and method of using same
EP2552267A2 (en) * 2010-03-26 2013-02-06 National Oilwell Varco, L.P. Headgear and method of using same
US20120308743A1 (en) * 2011-04-22 2012-12-06 Rivera Iii Seferino Sefe Visor
US9561684B2 (en) 2011-04-22 2017-02-07 Seferino Rivera, III System and method for varying hologram visibility
GB2495505A (en) * 2011-10-11 2013-04-17 Hd Inspiration Holding B V Visor with photochromatic insert
WO2013055217A2 (en) 2011-10-11 2013-04-18 Hd Inspiration Holding B.V. Visor and method of manufacture
WO2013055217A3 (en) * 2011-10-11 2013-06-20 Hd Inspiration Holding B.V. Visor and method of manufacture
US20220400805A1 (en) * 2021-06-21 2022-12-22 Chi-Liang Wei Photochromic helmet visor

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GB0021380D0 (en) 2000-10-18
AU2001287844A1 (en) 2002-03-13
WO2002018986A3 (en) 2002-05-10

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