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    Method of manufacturing an optically scannable information carrier
    1.
    发明授权
    Method of manufacturing an optically scannable information carrier 失效

    公开(公告)号：US06649093B2

    公开(公告)日：2003-11-18

    申请号：US09915679

    申请日：2001-07-26

    申请人： Helmar Van Santen ,  Gerard Eduard Van Rosmalen

    发明人： Helmar Van Santen ,  Gerard Eduard Van Rosmalen

    IPC分类号： B29D1100

    CPC分类号： G11B7/122 ,  G11B7/261 ,  Y10S425/81

    摘要： The invention relates to a method of manufacturing a master mold (1), which is used to manufacture an optical information disc, such as a CD or DVD. According to the method, a substrate (3) is provided with a photosensitive layer (5), which is subsequently irradiated by means of a radiation beam (7), which is focused to a scanning spot (11) on said layer by means of an optical lens system (9). A liquid, such as water, is supplied into a gap (53) present between the photosensitive layer and an auxiliary lens (59) of the lens system facing said layer. As a result, the size of the scanning spot is decreased and the information density of the information disc to be manufactured is increased. According to the invention, the liquid is supplied via a supply opening (69) which is positioned immediately adjacent the auxiliary lens (59), in a direction which, viewed from the scanning spot (11), is contrary to a direction (Z) wherein the substrate (3) is moved with respect to the lens system (9). Thus, the liquid supplied via the supply opening is transported immediately and exclusively into said gap (53), so that the amount of liquid to be supplied to fill the gap is limited. The supply opening is formed in a wall portion (65), which extends in an imaginary plane in which also a side wall (63) of the auxiliary lens (59) facing the photosensitive layer is present. As a result, a homogeneous Couette flow of liquid without air inclusions is obtained in the gap. This Couette flow does not cause any undesirable mechanical vibrations of the lens system. The invention further relates to a method of manufacturing an optical information disc, according to which method a master mold (1) is manufactured in a first step, and the information disc is manufactured in a second step by means of a replica process using said master mold. The invention further relates to a device (25) for the manufacture of a master mold by means of a method according to the invention.

    Compact Switchable Optical Unit
    2.
    发明申请
    Compact Switchable Optical Unit 审中-公开
    紧凑型可切换光学单元

    公开(公告)号：US20080247019A1

    公开(公告)日：2008-10-09

    申请号：US10599347

    申请日：2005-03-21

    申请人： Stein Kuiper ,  Bernardus Hendrikus Wilhelmus Hendriks ,  Marco Andreas Jacobus Van As ,  Gerard Eduard Van Rosmalen

    发明人： Stein Kuiper ,  Bernardus Hendrikus Wilhelmus Hendriks ,  Marco Andreas Jacobus Van As ,  Gerard Eduard Van Rosmalen

    IPC分类号： G02B26/08

    CPC分类号： G02B3/14 ,  G02B5/1828 ,  G02B26/005 ,  G02B26/0808

    摘要： A switchable optical unit, capable of controlling a beam of radiation (b) passing through an optically active portion (8) of the unit, comprises a fluid chamber (10) including an electrically conductive liquid (18), which chamber comprises at least one first electrode (20,22) fixed to the chamber inner walls (12,14) at the position of the optically active portion and second electrode means (24) fixed to inner walls of the chamber outside the optically active portion and a third electrode (28) connected to the conductive liquid. By applying a voltage (V) to the at least one first electrode and the second electrode means, respectively the conductive liquid can be moved in and out the optically active portion so that the unit (1) is switched between a least two discrete states.

    摘要翻译： 能够控制通过该单元的光学活性部分（8）的辐射束（b）的可切换光学单元包括包括导电液体（18）的流体室（10），该腔室包括至少一个 在光学活性部分的位置处固定到腔室内壁（12,14）的第一电极（20,22）和固定到光学活性部分外部的室内壁的第二电极装置（24）和第三电极 28）连接到导电液体。 通过分别将电压（V）施加到至少一个第一电极和第二电极装置，导电液体可以移入和移出光学有效部分，使得单元（1）在至少两个离散状态之间切换。