최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0910479 (2010-10-22) |
등록번호 | US-8164817 (2012-04-24) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 47 인용 특허 : 1305 |
A method of forming a mirrored bent cut glass shape includes bending a flat sheet of glass to establish a curved sheet of glass. A machine vision system determines a surface profile of the curved sheet of glass, and a computer numerical controlled cutting tool is positioned at the curved sheet of gl
A method of forming a mirrored bent cut glass shape includes bending a flat sheet of glass to establish a curved sheet of glass. A machine vision system determines a surface profile of the curved sheet of glass, and a computer numerical controlled cutting tool is positioned at the curved sheet of glass and its cutting wheel is maintained at or close to 90 degrees to the tangential plane of the curved sheet of glass. At least one of (a) the cutting wheel and (b) the curved sheet of glass is controlled in three dimensions to cut a bent cut glass shape from the curved sheet of glass, and such controlling is, at least in part, responsive to the surface profile of the curved sheet of glass. A mirror reflector is established at a surface of the bent cut glass shape to form a mirrored bent cut glass shape.
1. A method of forming a mirrored bent cut glass shape suitable for use in an exterior rearview mirror assembly of a vehicle, said method comprising: providing a flat sheet of glass of area greater than the area of a bent cut glass shape that is to be formed from said flat sheet of glass;bending sai
1. A method of forming a mirrored bent cut glass shape suitable for use in an exterior rearview mirror assembly of a vehicle, said method comprising: providing a flat sheet of glass of area greater than the area of a bent cut glass shape that is to be formed from said flat sheet of glass;bending said flat sheet of glass to establish a curved sheet of glass;determining a surface profile of said curved sheet of glass by a machine vision system;providing a computer numerical controlled cutting tool having a cutting wheel that is controlled via digital computer control;positioning said cutting tool at said curved sheet of glass;maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said curved sheet of glass;controlling at least one of (a) said cutting wheel and (b) said curved sheet of glass in three dimensions to cut a bent cut glass shape from said curved sheet of glass;wherein controlling at least one of (a) said cutting wheel and (b) said curved sheet of glass to cut said bent cut glass shape is, at least in part, responsive to the surface profile of said curved sheet of glass as determined by said machine vision system; andestablishing a mirror reflector at a surface of said bent cut glass shape to form a mirrored bent cut glass shape. 2. The method of claim 1, wherein bending said flat sheet of glass comprises bending said flat sheet of glass to establish an aspherically-curved sheet of glass. 3. The method of claim 1, wherein bending said flat sheet of glass comprises bending said flat sheet of glass to establish a spherically-curved sheet of glass. 4. The method of claim 1, wherein said mirrored bent cut glass shape comprises a mirrored bent cut glass shape for a conventional mirror reflective element. 5. The method of claim 1, wherein maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said curved sheet of glass comprises maintaining said cutting wheel within about 20 degrees of 90 degrees to the tangential plane of said curved sheet of glass. 6. The method of claim 1, wherein establishing a mirror reflector comprises vacuum deposition of a metal thin film coating at said surface of said bent cut glass shape. 7. The method of claim 6, wherein said metal thin film coating comprises chromium. 8. The method of claim 1, wherein determining the surface profile of said curved sheet of glass by said machine vision system comprises capturing a digital image of a pattern reflected off said curved sheet of glass and processing said captured digital image. 9. The method of claim 8, further comprising storing a captured digital image of the reflected pattern in a computer storage. 10. The method of claim 9, wherein said machine vision system allocates an identifier to said stored digital image. 11. A method of forming an electro-optic reflective element suitable for use in an exterior rearview mirror assembly of a vehicle, said method comprising: providing a first flat sheet of glass of area greater than the area of a front bent cut glass shape that is to be formed from said first flat sheet of glass;bending said first flat sheet of glass to establish a first curved sheet of glass;providing a second flat sheet of glass of area greater than the area of a rear bent cut glass shape that is to be formed from said second flat sheet of glass;bending said second flat sheet of glass to establish a second curved sheet of glass, said second curved sheet of glass having substantially the same curvature as said first curved sheet of glass;determining a first surface profile of said first curved sheet of glass and a second surface profile of said second curved sheet of glass by a machine vision system;providing a computer numerical controlled cutting tool having a cutting wheel that is controlled via digital computer control;positioning said cutting tool at said first curved sheet of glass;maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said first curved sheet of glass;controlling at least one of (a) said cutting wheel and (b) said first curved sheet of glass in three dimensions to cut a front bent cut glass shape from said first curved sheet of glass;wherein controlling at least one of (a) said cutting wheel and (b) said first curved sheet of glass to cut said front bent cut glass shape is, at least in part, responsive to the first surface profile of said first curved sheet of glass as determined by said machine vision system;positioning said cutting tool at said second curved sheet of glass;maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said second curved sheet of glass;controlling at least one of (a) said cutting wheel and (b) said second curved sheet of glass in three dimensions to cut a rear bent cut glass shape from said second curved sheet of glass; andwherein controlling at least one of (a) said cutting wheel and (b) said second curved sheet of glass to cut said rear bent cut glass shape is, at least in part, responsive to the second surface profile of said second curved sheet of glass as determined by said machine vision system;establishing a mirror reflector at a surface of said rear bent cut glass shape; andassembling said rear bent cut glass shape and said front bent cut glass shape to form an electro-optic mirror reflective element. 12. The method of claim 11, wherein bending said first flat sheet of glass comprises bending said first flat sheet of glass to establish an aspherically-curved first sheet of glass and wherein bending said second flat sheet of glass comprises bending said second flat sheet of glass to establish an aspherically-curved second sheet of glass. 13. The method of claim 11, wherein bending said first flat sheet of glass comprises bending said first flat sheet of glass to establish a spherically-curved first sheet of glass and wherein bending said second flat sheet of glass comprises bending said second flat sheet of glass to establish a spherically-curved second sheet of glass. 14. The method of claim 11, wherein establishing a mirror reflector comprises vacuum deposition of a metal thin film coating. 15. The method of claim 11, wherein maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said first curved sheet of glass comprises maintaining said cutting wheel within about 20 degrees of 90 degrees to the tangential plane of said first curved sheet of glass and wherein maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said second curved sheet of glass comprises maintaining said cutting wheel within about 20 degrees of 90 degrees to the tangential plane of said second curved sheet of glass. 16. The method of claim 11, wherein each of said front and rear bent cut glass shapes has an electrically conductive coating on a surface thereof and wherein said front and rear bent cut glass shapes are assembled together with an electro-optic medium disposed therebetween and contacting said electrically conductive coatings. 17. The method of claim 16, wherein said electro-optic medium disposed between said front and rear bent cut glass shapes comprises an electrochromic cross-linked polymeric solid film, said electrochromic cross-linked solid polymeric film formed from an electrochromic monomer composition, said electrochromic monomer composition including at least one cathodic electrochromic compound. 18. The method of claim 11, further comprising selectively sorting a plurality of front and rear bent cut glass shapes to select a pair of matched front and rear bent substrates for said electro-optic mirror reflective element. 19. The method of claim 18, wherein selectively sorting a plurality of front and rear bent cut glass shapes comprises utilizing said machine vision system to capture digital images of patterns reflected off said first and second curved sheets of glass and to store said digital images of the reflected patterns in a computer storage, and wherein said stored digital images are processed to determine which combination of any two first and second curved sheets of glass has a substantially matched reflected pattern. 20. The method of claim 19, wherein at least one of (a) said machine vision system allocates an identifier to each stored digital image and (b) said method comprises selecting front and rear bent cut glass shapes cut from curved sheets of glass that are determined to have substantially matching reflected patterns. 21. The method of claim 19, wherein said reflected pattern consists of at least one of dots, squares, lines, circles and ovals. 22. A method of forming a mirrored bent cut glass shape suitable for use in an exterior rearview mirror assembly of a vehicle, said method comprising: providing a flat sheet of glass of area greater than the area of a bent cut glass shape that is to be formed from said flat sheet of glass;bending said flat sheet of glass to establish a curved sheet of glass;determining a surface profile of said curved sheet of glass by a machine vision system;wherein determining the surface profile of said curved sheet of glass by said machine vision system comprises capturing a digital image of a pattern reflected off said curved sheet of glass and processing said captured digital image;providing a computer numerical controlled cutting tool having a cutting wheel that is controlled via digital computer control;positioning said cutting tool at said curved sheet of glass;maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said curved sheet of glass;controlling at least one of (a) said cutting wheel and (b) said curved sheet of glass in three dimensions to cut a bent cut glass shape from said curved sheet of glass;wherein controlling at least one of (a) said cutting wheel and (b) said curved sheet of glass to cut said bent cut glass shape is, at least in part, responsive to the surface profile of said curved sheet of glass as determined by said machine vision system; andestablishing a mirror reflector at a surface of said bent cut glass shape to form a mirrored bent cut glass shape and wherein establishing a mirror reflector comprises vacuum deposition of a metal thin film coating at said surface of said bent cut glass shape. 23. The method of claim 22, wherein bending said flat sheet of glass comprises bending said flat sheet of glass to establish an aspherically-curved sheet of glass. 24. The method of claim 22, wherein bending said flat sheet of glass comprises bending said flat sheet of glass to establish a spherically-curved sheet of glass. 25. The method of claim 22, wherein maintaining said cutting wheel at or close to 90 degrees to the tangential plane of said curved sheet of glass comprises maintaining said cutting wheel within about 20 degrees of 90 degrees to the tangential plane of said curved sheet of glass. 26. The method of claim 22, wherein determining the surface profile of said curved sheet of glass by said machine vision system comprises capturing a digital image of a pattern reflected off a convex surface of said curved sheet of glass. 27. The method of claim 22, wherein said cutting tool comprises a five-axis cutting tool. 28. The method of claim 22, further comprising storing a captured digital image of the reflected pattern in a computer storage. 29. The method of claim 28, wherein said machine vision system allocates an identifier to said stored digital image.
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