IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0832284
(2010-07-08)
|
등록번호 |
US-8441724
(2013-05-14)
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발명자
/ 주소 |
- You, Xiaorong
- Johnson, Phil
|
출원인 / 주소 |
- Sperian Eye & Face Protection, Inc.
|
대리인 / 주소 |
Barlow, Josephs & Holmes, Ltd.
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
4 |
초록
▼
An optical filter composite is provided having effective filtering of infrared emissions, such as solar or laser emissions, while providing very high visible light transmission, preserving the ability to differentiate and recognize colors and providing a pleasing overall color as compared to the pri
An optical filter composite is provided having effective filtering of infrared emissions, such as solar or laser emissions, while providing very high visible light transmission, preserving the ability to differentiate and recognize colors and providing a pleasing overall color as compared to the prior art. The present invention provides for filters that are formed by lamination, infusion and/or coating processes using filtering assemblies having a neutral color with high visible light transmission while also producing high levels of filtration in the infrared and near infrared range to provide effective protection against harmful emissions in these ranges while also producing a filter that has a color that is more pleasing and desirable to the wearer.
대표청구항
▼
1. An optical safety filter for protecting against exposure to infrared radiation having a wavelength ranging from approximately 750 nm to approximately 3000 nm, said optical safety filter comprising: at least one transparent filter blank formed from a transparent polymer base matrix material; anda
1. An optical safety filter for protecting against exposure to infrared radiation having a wavelength ranging from approximately 750 nm to approximately 3000 nm, said optical safety filter comprising: at least one transparent filter blank formed from a transparent polymer base matrix material; anda filtering layer configured and arranged proximate to a surface of said filter blank,said filtering layer including a neutral colored dye effective for substantially blocking infrared radiation having a wavelength ranging from approximately 750 nm to approximately 3000 nm,said optical filter having a visible light transmission of greater than 49%. 2. The optical filter of claim 1, wherein said polymer base matrix material is selected from the group consisting of: polycarbonate, nylon and acrylic. 3. The optical filter of claim 1, wherein said optical filter is selected from the group consisting of: lens blanks, lenses for eyewear, windows and filtering plates. 4. The optical filter of claim 1, wherein said filtering layer is laminated to the surface of the filter blank. 5. The optical filter of claim 4, further comprising: a second transparent filter blank, said filtering layer being laminated between said filter blanks. 6. The optical filter of claim 1, wherein said filtering layer is a coating applied to the surface of the filter blank. 7. The optical filter of claim 6, wherein the coating is selected from the group consisting of: water based, solvent based, resin based, UV curable, thermal curable and combinations thereof. 8. The optical filter of claim 6, wherein the filtering layer includes a dye therein that substantially blocks emissions corresponding to a wavelength range of between approximately 750-3000 nm. 9. The optical filter of claim 1, wherein said filtering layer is a portion of an overall thickness of the filter blank into which a dye is infused. 10. The optical filter of claim 9, wherein the infused dye is water based. 11. An optical safety filter for protecting against exposure to infra-red radiation having a wavelength ranging from approximately 750 nm to approximately 3000 nm, said optical safety filter comprising: at least one transparent filter blank formed from a transparent polymer base matrix material; anda filtering layer configured and arranged proximate to a surface of said filter blank,said filtering layer comprising a plurality of polymer layers wherein adjacent layers cooperate to substantially block infra-red radiation having a wavelength ranging from approximately 750 nm to approximately 3000 nm,said optical filter having a visible light transmission of greater than 49%. 12. The optical safety filter of claim 11, wherein said polymer base matrix material is selected from the group consisting of: polycarbonate, nylon and acrylic. 13. The optical safety filter of claim 11, wherein said optical filter is selected from the group consisting of: lens blanks, lenses for eyewear, windows and filtering plates. 14. The optical safety filter of claim 11, wherein said filtering layer is laminated to the surface of the filter blank. 15. The optical safety filter of claim 11, wherein said filtering layer comprises a plurality of polymer layers which are polarized and cooperatively oriented so as to substantially block said infrared radiation. 16. The optical safety filter of claim 12, wherein said filtering layer comprises a plurality of polymer layers which are polarized and cooperatively oriented so as to substantially block said infrared radiation. 17. The optical safety filter of claim 13, wherein said filtering layer comprises a plurality of polymer layers which are polarized and cooperatively oriented so as to substantially block said infrared radiation. 18. The optical safety filter of claim 14, wherein said filtering layer comprises a plurality of polymer layers which are polarized and cooperatively oriented so as to substantially block said infrared radiation. 19. The optical safety filter of claim 11, wherein said filtering layer comprises a plurality of polymer layers each having varying indices of refraction so as to substantially block said infrared radiation. 20. The optical safety filter of claim 12, wherein said filtering layer comprises a plurality of polymer layers each having varying indices of refraction so as to substantially block said infrared radiation. 21. The optical safety filter of claim 13, wherein said filtering layer comprises a plurality of polymer layers each having varying indices of refraction so as to substantially block said infrared radiation. 22. The optical safety filter of claim 14, wherein said filtering layer comprises a plurality of polymer layers each having varying indices of refraction so as to substantially block said infrared radiation.
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