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1.发明公开
公开(公告)号：EP1157973A2
公开(公告)日：2001-11-28
申请号：EP01201565.7
申请日：2001-05-01
发明人： Budinski, Michael K., c/o Eastman Kodak Company , Pulver, John C., c/o Eastman Kodak Company , Nelson, Jayson J., c/o Eastman Kodak Company , Hill, Eugene G., c/o Eastman Kodak Company , Richards, David A., c/o Eastman Kodak Company
CPC分类号： C03C3/062 , C03B11/08 , C03B40/02 , C03B2215/48 , C03B2215/50 , C03B2215/72 , C03C3/0745 , C03C3/12 , C03C3/145
摘要： A method for making working mold tools for use in a compression molding process for molding optical glass elements from high temperature glasses having T g 's in the range of from 400°C to 850°C. An yttria aluminosilicate glass is fabricated by traditional melting and casting processes to thereby make an amorphous base material having a minimum apparent viscosity of 10 15 poise at the temperature at which the optical glass elements are to be molded. A mold preform is made from the base material. A first surface figure for the optical element to be molded with the working mold tool is defined. A second surface figure for a master mold tool and a third surface figure for the working mold tool are computed based upon the first surface figure and the coefficients of thermal expansion of the optical element, the master mold tool, and the working mold tool, the temperature at which the working mold tool is molded, and the temperature at which the optical element is to be molded. A master mold tool is then ground and polished to achieve the second surface figure. The working mold tool is then molded from the mold preform using the master mold tool.
摘要翻译： 一种用于制造工作模具的方法，用于压缩成型工艺，用于从Tg在400℃至850℃范围内的高温玻璃成型光学玻璃元件。通过传统的熔融和铸造工艺制造氧化钇铝硅酸盐玻璃 从而在光学玻璃元件将被模制的温度下形成具有10泊泊的最小表观粘度的非晶基材。 模具预成型件由基材制成。 定义了用工作模具工具模制的光学元件的第一表面图形。 基于第一表面图形和光学元件，主模具和工作模具的热膨胀系数来计算主模具的第二表面图形和用于工作模具工具的第三表面图形， 加工模具的成型温度以及光学元件的成型温度。 然后对主模具进行研磨和抛光以达到第二表面图形。 然后使用主模具从模具预成型件模制工作模具。
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2.发明公开
公开(公告)号：EP1069082A2
公开(公告)日：2001-01-17
申请号：EP00202332.3
申请日：2000-07-03
发明人： Budinski, Michael Kevin, c/o Eastman Kodak Company , Nelson, Jayson J., c/o Eastman Kodak Company , Bourdage, Phillip D., c/o Eastman Kodak Company , Richards, David Anthony, c/o Eastman Kodak Company , McLaughlin, Paul O., c/o Eastman Kodak Company , Ludington, Paul D., c/o Eastman Kodak Company
IPC分类号： C03B11/08
CPC分类号： C03B11/082 , C03B2215/414 , C03B2215/61
摘要： A method and apparatus is disclosed for compression molding arrays optical elements which may be later singulated. The apparatus includes first and second mold halves with the second mold half having a central nest and a plurality of predetermined negative optical surface features therein. A glass preform is placed in the central nest and the first and second mold halves and the glass preform are heated to at least the glass transition temperature of the glass preform. The glass preform is then pressed between the first and second mold halves to thereby form an integral array of optical elements with each of the optical elements being a positive of the predetermined negative optical surface features. The integrally formed array of optical elements is then cooled to below the glass transition temperature and removed from the first and second mold halves.
摘要翻译： 公开了一种用于压缩模制阵列光学元件的方法和设备，所述光学元件随后可以被分割。 该设备包括第一和第二半模，第二半模具有中央嵌套和其中的多个预定负光学表面特征。 将玻璃预制件放置在中央嵌套中，并将第一和第二半模以及玻璃预制件加热到至少玻璃预制件的玻璃化转变温度。 然后将玻璃预成型件压在第一和第二半模之间，从而形成光学元件的整体阵列，其中每个光学元件是预定的负光学表面特征的正面。 然后将整体形成的光学元件阵列冷却到低于玻璃化转变温度并从第一和第二半模中取出。
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3.发明授权Apparatus for removing air from between a master magnetic medium and a slave magnetic medium preceding anhysteretic transfer of signals from master to slave 失效用于将数据从从属螺母介质介质非磁滞传送之前从磁介质和磁母亲从属介质之间去除空气的装置
公开(公告)号：EP0637015B1
公开(公告)日：1998-11-11
申请号：EP94110250.1
申请日：1994-07-01
发明人： Bigelow, Donald Orrin, c/o Eastman Kodak Company , Palone, Thomas William, c/o Eastman Kodak Company , Nelson, Jayson J., c/o Eastman Kodak Company
CPC分类号： G11B15/605 , G03B17/24 , G03B2217/244 , G11B5/865
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4.发明公开Apparatus for removing air from between a master magnetic medium and a slave magnetic medium preceding anhysteretic transfer of signals from master to slave 失效用于从磁性介质和数据从母亲介质非磁滞转让从属介质之前的磁性母亲从属介质之间去除空气的装置。
公开(公告)号：EP0637015A1
公开(公告)日：1995-02-01
申请号：EP94110250.1
申请日：1994-07-01
发明人： Bigelow, Donald Orrin, c/o Eastman Kodak Company , Palone, Thomas William, c/o Eastman Kodak Company , Nelson, Jayson J., c/o Eastman Kodak Company
CPC分类号： G11B15/605 , G03B17/24 , G03B2217/244 , G11B5/865
摘要： A prerecorded magnetic master web (54) and an unrecorded magnetic slave web (14), such as a photographic film having a magnetic coating, are brought into intimate contact for anhysteretic recording by wrapping the moving master web partially around a small diameter gimballed roller (66) positioned in close proximity to a rotating transfer drum (36); wrapping the moving slave web partially around a larger idler roller (34) positioned in close proximity to both the gimballed roller and the transfer drum; wrapping the slave web partially around the transfer drum with the master web wrapped outside the slave web; and evacuating a chamber or volume (68) formed among the webs, rollers and drum, to remove air from between the webs and cause them to converge into intimate contact at a nip up-stream of a signal transfer zone in which a magnetic head (70) applies a decaying magnetic field to cause anhysteretic transfer from the master web to the slave web.
摘要翻译： 预先记录的磁主幅材（54）和未记录磁从属网络上（14）：例如具有磁性涂层的照相胶片，通过部分地缠绕所述移动主网络上的小直径万向支架辊（使其为非磁滞记录紧密接触 66），其定位在靠近旋转转印鼓（36）; 部分包裹移动从网络上的较大惰辊（34），其定位在靠近这两个万向辊和转印鼓; 部分缠绕所述从网络上与主网络包裹从属幅外的转印鼓; 和排空该纤维网，辊子和鼓间形成的腔室或容积（68），以从腹板之间除去空气和使它们在一个辊隙的上游的信号传递区的会聚成紧密接触在哪一个磁头（ 70）通过使用衰减磁场，以使从主网络向从卷筒纸非磁滞传输。
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