Die for press-molding optical element
    5.
    发明公开
    Die for press-molding optical element 失效
    Pressform zum Pressen optischer Elemente。

    公开(公告)号:EP0404481A1

    公开(公告)日:1990-12-27

    申请号:EP90306615.7

    申请日:1990-06-18

    IPC分类号: C03B11/08

    摘要: A die for press-molding an optical element with high precision comprises a base material made of a material excellent in heat resistance, heat shock resistance and mechanical strength at high temperature, an intermediate layer formed on the base material and made of a thin film excellent in grinding machinability and cutting machin­ability, and a surface protective layer formed on the intermediate layer and made of a metal thin film excellent in heat resistance and mechanical strength at high temper­ature and less reactive to a material of the optical element. Additional thin film may be inserted between the base material and the intermediate layer so as to enhance the adhesion strength between the base material and the intermediate layer.

    摘要翻译: 用于高精度地压制光学元件的模具包括由耐热性,耐热冲击性和高温机械强度优异的材料制成的基材,形成在基材上并由薄膜制成的中间层优异 在切削加工性和切削加工性方面,表面保护层形成在中间层上,由耐热性和高温下的机械强度以及光学元件的反应性较差的金属薄膜构成。 可以在基材和中间层之间插入附加的薄膜,以增强基材和中间层之间的粘合强度。

    Method for making lens elements
    6.
    发明公开
    Method for making lens elements 失效
    Verfahren zum Herstellen von Linsenelementen。

    公开(公告)号:EP0308010A1

    公开(公告)日:1989-03-22

    申请号:EP88201936.7

    申请日:1988-09-07

    IPC分类号: C03B11/08

    摘要: A method of manufacturing lens elements, in which a glass preform heated to the softening temperature and an annular metal holder (3) enclosing the glass preform are arranged between the heated moulding dies (7,9) of a mould and are moulded in a pressing step into a lens element comprising a glass lens (21) and a ring (3) enclosing the glass lens and acting as a fitting. During moulding, the ring 3 forms together with the two dies (7,9) a quasi closed moulding cavity having an annular gap (15). During moulding, the ring (3) is expanded radially and a quantity of glass is pressed away through the annular gap (15).

    摘要翻译: 一种制造透镜元件的方法,其中加热到软化温度的玻璃预制件和围绕玻璃预制件的环形金属保持器(3)布置在模具的加热的模具(7,9)之间并且被压制成型 进入包括玻璃透镜(21)和包围玻璃透镜并用作配件的环(3)的透镜元件。 在模制期间,环3与两个模具(7,9)一起形成具有环形间隙(15)的准封闭模制腔。 在模制期间,环(3)径向膨胀,并且通过环形间隙(15)将一定数量的玻璃推开。