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    • 3. 发明授权
    • Gradient index optical element
    • 梯度折射率光学元件
    • US5731906A
    • 1998-03-24
    • US729415
    • 1996-10-11
    • Yuko Morita
    • Yuko Morita
    • G02B3/00
    • G02B3/0087
    • At least one metal species g is selected from the metal group G consisting of Nb, Ta, Pb, Ti, Tl and Zr. At least one metal species f is selected from the metal group F1 consisting of La, In, Y, Zr and Ta. The metal species g and f are not simultaneously Ta or Zr. The metal species g and f have concentrations distributed in mutually reverse directions. The element exhibits a ratio of dCf/dCg, in which dCf and dCg represent concentration distribution gradients of metal species f and g, respectively, ranging from -4 to -0.2. Alternatively, at least one metal species f may be selected from the metal group F2 consisting of Ga, Sn, Ba, Sr and Ca, while causing the ratio of dCf/dCg to be in the range of from -7 to -0.5. Thus, a gradient index optical element is obtained, which exhibits less refractive index change and large Abbe number change and is hence superior to conventional elements in correction of chromatic aberration.
    • 从由Nb,Ta,Pb,Ti,Tl和Zr组成的金属组G中选择至少一种金属物质g。 从由La,In,Y,Zr和Ta组成的金属组F1中选择至少一种金属物质f。 金属物质g和f不同时为Ta或Zr。 金属物质g和f的浓度分布在相反的方向。 该元素表现出dCf / dCg的比率,其中dCf和dCg分别表示金属物质f和g的浓度分布梯度,范围为-4至-0.2。 或者,可以从由Ga,Sn,Ba,Sr和Ca组成的金属组F2中选择至少一种金属物质f,同时使dCf / dCg的比例在-7至-0.5的范围内。 因此,获得了折射率变化较小和阿贝数变化较大的梯度折射率光学元件,因此优于色差校正中的常规元件。
    • 4. 发明授权
    • Method of solution doping a sol gel body via immersion
    • 溶液通过浸渍掺杂溶胶凝胶体的方法
    • US06178780B2
    • 2001-01-30
    • US08867043
    • 1997-06-02
    • Yuko Morita
    • Yuko Morita
    • C03B37016
    • C03B19/12C03C1/006
    • A porous body 4 and a first immersing solution 6 are put in a vessel 5 in proportions such that the whole of the porous body 4 is immersed in the immersing solution, and the immersing is conducted for an arbitrary period of time. The vessel 5 is formed so as to have a depth greater than the height of the porous body 4. A vessel-capacity changing device 7 is inserted in the vessel 5. The first immersing solution 6 overflows from the interstice between the vessel-capacity changing device 7 and the vessel 5. A second immersing solution 8 is poured through a charging port, and simultaneously the vessel-capacity changing device 7 is lifted to thereby remove the same from the immersing solution. Thus, the porous body 4 is immersed in the second immersing solution 8 without being exposed to the outside air to thereby complete solution replacement. The immersing of the porous body can be effected safely, securely and at a lowered cost without damaging the porous body.
    • 将多孔体4和第一浸渍溶液6以比例使整个多孔体4浸渍在浸渍溶液中的方式放入容器5中,并且浸渍进行任意时间。 容器5形成为具有大于多孔体4的高度的深度。容器容量改变装置7插入容器5中。第一浸渍溶液6从容器容量变化的空隙中溢出 装置7和容器5.第二浸渍溶液8通过加料口注入,同时将容器容量改变装置7提起,从而从浸渍溶液中除去。 因此,多孔体4浸没在第二浸渍液8中而不暴露于外部空气,从而完成溶液置换。 多孔体的浸渍可以安全,可靠地且降低成本地实现,而不损害多孔体。