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    • 22. 发明申请
    • LOW BIREFRINGENT THERMOPLASTIC LENSES AND COMPOSITIONS USEFUL IN PREPARING SUCH LENSES
    • 低双重热塑性镜片和组合物可用于制作这些镜片
    • US20100271702A1
    • 2010-10-28
    • US12810030
    • 2008-09-18
    • Weijun ZhouStephen F. HahnCharles F. DiehlKurt A. Koppi
    • Weijun ZhouStephen F. HahnCharles F. DiehlKurt A. Koppi
    • G02B1/11C08F236/10B29D11/00
    • C08F297/04C08F8/50C08F2800/20C08L53/025G02B1/041C08L2666/02C08F297/046
    • A lens-forming thermoplastic composition of matter has a crystallinity, as determined in accord with differential scanning calorimetry of from 0 percent to less than 1 percent when the composition comprises a hydrogenated vinyl aromatic/isoprene block copolymer or a crystallinity, as determined in accord with differential scanning calorimetry of from more than 0 percent to less than 1 percent when the composition comprises a hydrogenated vinyl aromatic/butadiene block copolymer. The composition has a birefringence, measured at a wavelength of 633 nanometers, within a range of from 0 to less than 6×10. Molding a melt of these compositions occurs at temperatures within a range from the hydrogenated block copolymer's glass transition minus 20° C. to the glass transition temperature minus 90° C. The compositions suitably form lenses such as an optical pick-up lens, which may be aspherical or have at least one of an irregular surface configuration, a non-uniform thickness or an irregular and non-uniform cross-section.
    • 当组合物包含氢化乙烯基芳族化合物/异戊二烯嵌段共聚物或结晶度时,物质的透镜形成热塑性组合物具有结晶度,其根据差示扫描量热法测定为0%至小于1%,如根据 当组合物包含氢化乙烯基芳族化合物/丁二烯嵌段共聚物时,差示扫描量热法为大于0%至小于1%。 该组合物在波长为633纳米的范围内具有在0至小于6×10的范围内的双折射率。 成型这些组合物的熔体发生在从氢化嵌段共聚物的玻璃化转变为-20℃到玻璃化转变温度-90℃的范围内的温度下。组合物适当地形成诸如光学拾取透镜的透镜,其可以是 是非球面的或具有不规则表面构型,不均匀厚度或不规则和不均匀横截面中的至少一个。
    • 27. 发明申请
    • Diffusely-reflecting polarizer having substantially amorphous nano-composite major phase
    • 具有基本无定形纳米复合主相的漫反射偏振器
    • US20110116167A1
    • 2011-05-19
    • US12592135
    • 2009-11-19
    • Jehuda GreenerWeijun ZhouXiang-Dong Mi
    • Jehuda GreenerWeijun ZhouXiang-Dong Mi
    • G02B1/08G02B5/30G02B27/28
    • G02B5/0257G02B1/04G02B5/0242G02B5/0284G02B5/3008C08L23/18C08L25/10
    • The present invention provides a diffusely reflecting polarizer comprising a layer containing: a first polymer being a substantially amorphous nano-composite material and being a major phase having a birefringence of less than about 0.02, and a second polymer being a dispersed minor phase within the first polymer major phase, the major and minor phases differing in index of refraction by more than about 0.05 along a first axis and by less than about 0.05 along a second axis orthogonal to said first axis; wherein the major phase comprises a continuous amorphous phase and at least one additional phase dispersed into domains within said continuous amorphous phase, the domains having characteristic dimensions smaller than the wavelength of light such that these domains do not contribute to scattering of light passing through the first polymer; wherein the diffuse reflectivity of said first and second polymers taken together along at least one axis for at least one polarization state of electromagnetic radiation is at least about 50%.
    • 本发明提供了一种漫反射偏振器,其包括含有第一聚合物的第一聚合物,第一聚合物是基本上无定形的纳米复合材料,并且是双折射小于约0.02的主相,第二聚合物是第一聚合物 聚合物主相,所述主相和次相沿着第一轴线的折射率不同于大约0.05,并且沿着与所述第一轴线正交的第二轴线小于约0.05; 其中所述主相包括连续非晶相以及分散在所述连续非晶相内的畴中的至少一个附加相,所述畴的特征尺寸小于光的波长,使得这些畴不会有助于穿过第一 聚合物; 其中所述第一和第二聚合物沿着至少一个轴线聚集在一起,用于电磁辐射的至少一个极化状态的漫反射率为至少约50%。