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    • 1. 发明授权
    • Polarizing optical system
    • 极化光学系统
    • US5969861A
    • 1999-10-19
    • US691923
    • 1996-08-01
    • Motoi UedaTakeshi HasegawaMikio Okamoto
    • Motoi UedaTakeshi HasegawaMikio Okamoto
    • C03C3/074C03C3/23C03C4/00C03C17/34G02B5/30
    • G02B5/3025C03C17/3417C03C3/0745C03C3/23C03C4/00
    • A polarizing optical system comprising: at least, polarizing characteristic imparting means for imparting a polarizing characteristic to light emitted from a light source; analyzer means for converting the polarizing characteristic into light intensity information; and output means for outputting the light intensity information; at least one element constituting the polarizing characteristic imparting means comprising an optical glass having a photoelastic constant C in the range of substantially zero with respect to a wavelength range of 0.4 .mu.m to 3.0 .mu.m. The optical glass has a photoelastic constant C in the range of -0.8 to +0.8 (10.sup.-8 cm.sup.2 /N) with respect to a wavelength range of 0.4 .mu.m to 3.0 .mu.m, and has the following composition when represented in terms of wt.% of oxides:SiO.sub.2 : 17.0-27.0% (35.5-57.0 mol %)Li.sub.2 O+Na.sub.2 O+K.sub.2 O: 0.5-5.0% (0.7-20.0 mol %)PbO: 72.0-75.0% (39.1-45.0 mol %)As.sub.2 O.sub.3 +Sb.sub.2 O.sub.3 : 0-3.0% (0.0-2.0 mol %)The above-mentioned optical glass for polarizing optical system causes substantially no optical path difference based on an optical anisotropy, even when a mechanical external stress or a thermal stress occurs. Accordingly, it is possible to easily attain a polarizing optical system which is capable of well retaining the polarizing characteristic of optical information by substantially obviating the effect of the thermal stress or mechanical external stress.
    • 一种偏振光学系统,包括:至少一种用于对从光源发出的光赋予偏振特性的偏振特性赋予装置; 用于将偏振特性转换成光强度信息的分析器装置; 以及输出装置,用于输出光强度信息; 构成偏振特性赋予装置的至少一个元件包括相对于0.4μm至3.0μm的波长范围具有基本为零的光弹性常数C的光学玻璃。 光学玻璃的光弹性常数C相对于0.4μm〜3.0μm的波长范围为-0.8〜+ 0.8(10 -8 cm 2 / N)的范围,当以 氧化物重量百分比:SiO2:17.0-27.0%(35.5-57.0摩尔%)Li2O + Na2O + K2O:0.5-5.0%(0.7-20.0摩尔%)PbO:72.0-75.0%(39.1-45.0摩尔%)As2O3 + Sb 2 O 3:0〜3.0%(0.0〜2.0摩尔%)上述偏振光学系统用光学玻璃,即使发生机械外部应力或热应力,也能够基于光学各向异性而基本上不发生光程差。 因此,通过基本上消除热应力或机械外部应力的影响,可以容易地获得能够很好地保持光学信息的偏振特性的偏振光学系统。
    • 2. 发明授权
    • Glass composition and optical member and optical instrument using the same
    • 玻璃组合物和光学元件以及使用其的光学仪器
    • US08110513B2
    • 2012-02-07
    • US12213750
    • 2008-06-24
    • Motoi UedaTakashi OzawaKiyoaki Shinohara
    • Motoi UedaTakashi OzawaKiyoaki Shinohara
    • C03C3/14C03C3/12C03C3/15C03C3/155
    • C03C3/14C03C3/15C03C3/19
    • A glass composition comprising: (A) TeO2 (50-95 mol %); (B) B2O3 (1-33 mol %); (C) ZnO (1-37 mol %); (D) Bi2O3 (1-18 mol %); (E) P2O5 (0-15 mol %); (F) R2O (0-13 mol %), where R represents at least one element selected from the group consisting of Li, Na, and K; (G) MO (0-13 mol %), where M represents at least one element selected from the group consisting of Mg, Ca, Sr, and Ba; (H) TiO2 (0-13 mol %); (I) Nb2O5 (0-10 mol %); (J) Ta2O5 (0-13 mol %); (K) L2O3 (0-11 mol %), where L represents at least one element selected from the group consisting of yttrium and lanthanoids; and (L) the total amount of P2O5, R2O, MO, TiO2, Nb2O5, Ta2O5, and L2O3 described in (E) to (K), respectively, is 0-15 mol %.
    • 一种玻璃组合物,其包含:(A)TeO 2(50-95摩尔%); (B)B2O3(1-33mol%); (C)ZnO(1-37mol%); (D)Bi 2 O 3(1-18mol%); (E)P 2 O 5(0-15摩尔%); (F)R2O(0-13mol%),其中R表示选自Li,Na和K中的至少一种元素; (G)MO(0-13mol%),其中M表示选自Mg,Ca,Sr和Ba中的至少一种元素; (H)TiO 2(0-13mol%); (I)Nb2O5(0-10mol%); (J)Ta2O5(0-13mol%); (K)L2O3(0-11mol%),其中L表示选自钇和镧系元素中的至少一种元素; 和(L)分别为(E)〜(K)所记载的P 2 O 5,R 2 O,MO,TiO 2,Nb 2 O 5,Ta 2 O 5,L 2 O的总量为0〜15摩尔%。
    • 3. 发明申请
    • Glass composition and optical member and optical instrument using the same
    • 玻璃组合物和光学元件以及使用其的光学仪器
    • US20090018006A1
    • 2009-01-15
    • US12213750
    • 2008-06-24
    • Motoi UedaTakashi OzawaKiyoaki Shinohara
    • Motoi UedaTakashi OzawaKiyoaki Shinohara
    • C03C3/15C03C3/155C03C3/19
    • C03C3/14C03C3/15C03C3/19
    • A glass composition satisfying the following conditions (A) to (L), the conditions are: (A) a content ratio of TeO2 is in a range from 50 to 95 mol %; (B) a content ratio of B2O3 is in a range from 1 to 33 mol %; (C) a content ratio of ZnO is in a range from 1 to 37 mol %; (D) a content ratio of Bi2O3 is in a range from 1 to 18 mol %; (E) a content ratio of P2O5 is in a range from 0 to 15 mol %; (F) a content ratio of R2O (where R represents at least one element selected from the group consisting of Li, Na, and K) is in a range from 0 to 13 mol %; (G) a content ratio of MO (where M represents at least one element selected from the group consisting of Mg, Ca, Sr, and Ba) is in a range from 0 to 13 mol %; (H) a content ratio of TiO2 is in a range from 0 to 13 mol %; (I) a content ratio of Nb2O5 is in a range from 0 to 10 mol %; (J) a content ratio of Ta2O5 is in a range from 0 to 13 mol %; (K) a content ratio of L2O3 (where L represents at least one element selected from the group consisting of yttrium and lanthanoids) is in a range from 0 to 11 mol %; and (L) a content ratio of a total amount of P2O5, R2O, MO, TiO2, Nb2O5, Ta2O5, and L2O3 described in (E) to (K), respectively, is in a range from 0 to 15 mol %.
    • 满足以下条件(A)〜(L)的玻璃组合物,条件为:(A)TeO 2的含有比例为50〜95摩尔% (B)B 2 O 3的含有比例为1〜33摩尔%。 (C)ZnO的含有比例为1〜37摩尔%。 (D)Bi 2 O 3的含量比在1〜18摩尔%的范围内。 (E)P2O5的含有比例为0〜15摩尔%。 (F)R 2 O(其中R表示选自Li,Na和K中的至少一种元素)的含量比为0至13摩尔%; (G)MO(M表示选自Mg,Ca,Sr和Ba中的至少一种元素)的含量比为0〜13摩尔% (H)TiO 2的含量比在0〜13摩尔%的范围内; (I)Nb 2 O 5的含量比在0〜10摩尔%的范围内。 (J)Ta2O5的含量比在0〜13摩尔%的范围内。 (K)L 2 O 3(其中L表示选自钇和镧系元素的至少一种元素)的含量比在0至11mol%的范围内; 和(L)分别为(E)〜(K)所记载的P2O5,R2O,MO,TiO2,Nb2O5,Ta2O5和L2O3的总量的含量比为0〜15摩尔%。
    • 6. 发明授权
    • Projection type display device
    • 投影式显示装置
    • US5918961A
    • 1999-07-06
    • US852815
    • 1997-05-07
    • Motoi Ueda
    • Motoi Ueda
    • G09F9/00G02B27/14G03B21/00H04N9/31G03B21/28
    • G02B27/1026G02B27/149H04N9/3105H04N9/3167
    • A color projection display device separates light into the colors of red, green and blue. Each of the color components is modulated, superimposed with the other components again and projected. The device provides color picture images with few irregularities in illumination intensity. Polarizing beam splitters used for modulation of the colors are constructed from base materials having a minimum absolute photoelasticity constant value at different wavelengths. Thus, the absolute photoelasticity constant value of the base material for a particular wavelength of light that is separated by the polarizing beam splitter can be made small and double refractions, resulting from stress, are unlikely to occur in any of the components. As a result, a disturbance in the polarization and separation performance is unlikely to occur, and irregularities in the illumination intensity can be reduced.
    • 彩色投影显示装置将光分成红色,绿色和蓝色的颜色。 每个颜色分量被调制,再次与其他组件重叠并投影。 该设备提供了在照明强度上几乎不均匀的彩色图像图像。 用于调制颜色的偏振分束器由具有不同波长的最小绝对光弹性常数值的基材构成。 因此,由偏振分束器分离的特定波长的光的基材的绝对光弹性常数值可以做得很小,并且由于应力引起的双折射不可能在任何部件中发生。 结果,不太可能发生极化和分离性能的干扰,并且可以降低照明强度的不规则性。
    • 9. 发明授权
    • Projection type display apparatus
    • 投影式显示装置
    • US6062694A
    • 2000-05-16
    • US993528
    • 1997-12-18
    • Yoshiro OikawaMotoi UedaKazufumi IshibashiMasaaki KusanoTetsuo Hattori
    • Yoshiro OikawaMotoi UedaKazufumi IshibashiMasaaki KusanoTetsuo Hattori
    • G02B27/28H04N5/74H04N9/31G03B21/14
    • H04N9/3105G02B27/283H04N9/3167H04N5/7441
    • The present invention relates to a projection type display apparatus which utilizes a polarizing beam splitter and/or a color separating/combining optical system, each being constituted by an optically transparent material block having a specific characteristic, thereby being capable of securing optically stable performances against influences of various thermal and external stresses and suppressing image quality deterioration to a low level. In particular, in this projection type display apparatus, the polarizing beam splitter used for a polarized light separating optical system and analyzing optical system, and/or an optical member servicing as a color separating/combining optical system are constituted by an optically transparent material block in which a wavelength where the absolute value of a photoelastic constant becomes a minimum level exists in a wavelength range of a blue light component.
    • 本发明涉及一种使用偏振光束分离器和/或分色/组合光学系统的投影型显示装置,每一个由具有特定特性的光学透明材料块构成,从而能够确保光学上稳定的性能,抵抗 各种热应力和外部应力的影响,并将图像质量降低到低水平。 特别地,在这种投影型显示装置中,用于偏振光分离光学系统和分析光学系统的偏振分束器和/或维修为分色/组合光学系统的光学部件由光学透明的材料块 其中光弹性常数的绝对值变为最小电平的波长存在于蓝光分量的波长范围内。