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    Method of manufacturing biconvex lens elements
    1.
    发明公开
    Method of manufacturing biconvex lens elements 失效
    Verfahren zum Herstellen bikonvexer Linsenelemente。

    公开(公告)号：EP0316040A1

    公开(公告)日：1989-05-17

    申请号：EP88202478.9

    申请日：1988-11-07

    申请人： Philips Electronics N.V.

    发明人： Bartman, Gerrit Egbert ,  Hattu, Nicodemus ,  Lindhout, Willem Johannes ,  Trommelen, Sebastiaan Frederik Maria

    IPC分类号： C03B11/08

    CPC分类号： C03B11/08 ,  C03B2215/46 ,  C03B2215/49 ,  C03B2215/73 ,  C03B2215/79 ,  Y10S359/90 ,  Y10S425/808

    摘要： A method of manufacturing biconvex lens elements (21) comprising a biconvex glass lens (23) and a holder (1) consisting of two cylindrical rings (5,7), which are teles­copically slidable with respect to each other and have different diameters so that an annular gap (9) is formed. A lens blank is heated together with the holder (1) in the telescopically extended position of the rings (5,7) to the processing temperature of the glass and is arranged between the heated dies (17, 19) of a mould, whereupon the dies (17, 19) are moved towards each other in a pressing stroke, the two rings (5,7) being telescoped into each other, the lens blank in the holder being moulded into a biconvex glass lens (23) and the excess quantity of glass being pressed from the hotter central part of the lens blank into the annular gap (9). The lens element (21) obtained after cooling is characterized by a biconvex glass lens (23), which is adhesively enclosed by a bipartite holder acting as a mount.

    摘要翻译： 一种制造双凸透镜元件（21）的方法，包括双凸透镜（23）和由两个圆柱环（5,7）组成的保持器（1），所述两个圆柱环可相对于彼此可伸缩地滑动并具有不同的直径，使得 形成环形间隙（9）。 将镜片坯料与保持器（1）一起在环（5,7）的伸缩位置加热到玻璃的加工温度，并且被布置在模具的加热模具（17,19）之间，因此， 模具（17,19）在挤压冲程中彼此相对移动，两个环（5,7）彼此伸缩，保持器中的透镜毛坯被模制成双凸透镜（23），并且多余的 的玻璃从透镜毛坯的较热的中心部分压入环形间隙（9）。 冷却后获得的透镜元件（21）由双凸透镜（23）表征，双面玻璃透镜（23）由作为安装座的二分支架粘合地包围。