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    • 31. 发明授权
    • Projection image display apparatus
    • 投影图像显示装置
    • US06831706B2
    • 2004-12-14
    • US10197131
    • 2002-07-17
    • Masayuki AbeKeiji OhtakaAtsushi Okuyama
    • Masayuki AbeKeiji OhtakaAtsushi Okuyama
    • G02F11335
    • G02B27/1026G02B27/14G02B27/145G02B27/283H04N5/7441H04N9/3167
    • When light from a reflection image display element is incident on a polarization split surface at an angle other than 45°, leakage light that decreases the contrast of an image is produced. In a projection image display apparatus which illuminates an image display element with light from a light source and projects light from the image display element through two polarization split surfaces, when the angles of first and second light rays, of light rays incident on the polarization split surface, with respect to the optical axis correspond to 55% of the maximum angle of the incident light rays with respect to the optical axis, where light rays of which incident angle with respect to said image display element is larger is set as first light ray and light rays of which incident angle with respect to said image display element is smaller is set as second light ray, and a light shielding characteristic value L on the two polarization split surfaces is represented by L=[(M1)a·(M1)b+(M2)a·(M2)b]/2 where (M1)a is the amount of leakage light of the first light ray on the polarization split on the reflection image display element side, (M2)a is the amount of leakage light of the second light ray, (M1)b is the amount of leakage light of the first light ray on the polarization split on the projection optical system side, and (M2)b is the amount of leakage light of the second light ray.
    • 当来自反射图像显示元件的光以不同于45°的角度入射到偏振分割表面时,产生降低图像的对比度的泄漏光。 在利用来自光源的光照射图像显示元件的投影图像显示装置中,通过两个偏振分割面投影来自图像显示元件的光,当入射到偏振光分离体上的光线的第一和第二光线的角度 表面相对于光轴对应于入射光线相对于光轴的最大角度的55%,其中相对于所述图像显示元件的入射角较大的光线较大,被设定为第一光线 将相对于所述图像显示元件的入射角较小的光线设定为第二光线,并且将两个偏振分割面的遮光特性值L表示为L = [(M1)a(M1) b +(M2)a。(M2)b] / 2其中(M1)a是第一光线在反射图像显示元件侧的偏振分束上的泄漏光量,(M2)a是泄漏量 的光 (M1)b是投影光学系统侧的偏振光分割时的第一光线的泄漏光量,(M2)b是第二光线的漏光量。
    • 32. 发明授权
    • Method and apparatus for measuring magnetic head
    • 磁头测量方法及装置
    • US06639400B2
    • 2003-10-28
    • US10228189
    • 2002-08-27
    • Masayuki Abe
    • Masayuki Abe
    • G01R3312
    • G01R33/0385G01Q60/54G11B5/3166G11B5/455Y10S977/865
    • In a magnetic head measuring apparatus for measuring a magnetic head, an amplitude-modulated electric current whose amplitude is modulated by a specified carrier wave frequency and modulation frequency is applied to a magnetic head. A calibrating magnetic field generating source causes the magnetic head to generate a magnetic field having a specified strength and frequency, thereby calibrating measurement variations of the magnetic head. A magnetic head measuring device measures a high-frequency magnetic field generated from the magnetic head. If necessary, an interchangeable magnetic material probe is used to replace a probe of the magnetic head measuring device.
    • 在用于测量磁头的磁头测量装置中,将振幅由指定的载波频率和调制频率调制的幅度调制电流施加到磁头。 校准磁场产生源使得磁头产生具有指定强度和频率的磁场,从而校准磁头的测量变化。 磁头测量装置测量从磁头产生的高频磁场。 如果需要,可以使用可互换的磁性材料探针来代替磁头测量装置的探头。
    • 40. 发明授权
    • Liquid crystal display apparatus
    • 液晶显示装置
    • US08330694B2
    • 2012-12-11
    • US12132717
    • 2008-06-04
    • Masayuki Abe
    • Masayuki Abe
    • G09G3/36
    • G09G3/3614G09G2310/0232G09G2310/0245G09G2320/0233G09G2320/0257G09G2320/048
    • The liquid crystal display apparatus includes a liquid crystal modulation element including first and second electrode, a liquid crystal layer disposed between the first and second electrodes, a first alignment film disposed between the first electrode and the liquid crystal layer, and a second alignment film disposed between the second electrode and the liquid crystal layer. The apparatus further includes a controller that respectively provides first and second electric potentials to the first and second electrodes such that a sign of an electric field generated in the liquid crystal layer is cyclically inverted in a modulation operation state. The controller respectively provides third and fourth electric potentials to the first and second electrodes such that the sign of the electric field is fixed in a state other than the modulation operation state. The apparatus can avoid an influence by cumulated charged particles without adding a new member.
    • 液晶显示装置包括:液晶调制元件,包括第一和第二电极,设置在第一和第二电极之间的液晶层,设置在第一电极和液晶层之间的第一取向膜和设置在第二电极和液晶层之间的第二取向膜 在第二电极和液晶层之间。 该装置还包括分别向第一和第二电极提供第一和第二电位的控制器,使得在调制操作状态下在液晶层中产生的电场的符号被循环地反转。 控制器分别向第一和第二电极提供第三和第四电位,使得电场的符号在调制操作状态以外的状态下被固定。 该装置可以避免累积带电粒子的影响而不添加新的成员。