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    • 4. 发明授权
    • Projector system
    • 投影仪系统
    • US5451103A
    • 1995-09-19
    • US222957
    • 1994-04-05
    • Masato HatanakaYuji NagataEiji Takahashi
    • Masato HatanakaYuji NagataEiji Takahashi
    • H04N9/31G03B21/28
    • H04N9/3105
    • A projector rear is simple in structure uses reflection type liquid crystal plates to project images on a screen. R light emitted by a light source is directed to a first liquid crystal plate via a first dichroic mirror. Light reflected from the first liquid crystal plate is reflected toward a projection axis by the first dichroic mirror. B light transmitted through the first dichroic mirror is reflected by a second dichroic mirror and impinges on a second liquid crystal plate. Light reflected by this second liquid crystal plate is again reflected toward the projection axis by the second dichroic mirror. G light is made to directly enter a third liquid crystal plate. G light reflected by the third liquid crystal plate travels along the projection axis. The angular positional relations among optical elements are so set that the angle of incidence to the normal to each dichroic mirror is close to the angle of reflection.
    • 投影机后部结构简单,使用反射型液晶板在屏幕上投影图像。 由光源发射的R光通过第一分色镜被引导到第一液晶板。 从第一液晶板反射的光被第一分色镜朝投影轴反射。 通过第一分色镜的B光被第二分色镜反射并撞击在第二液晶板上。 由第二液晶板反射的光再次通过第二分色镜朝投影轴反射。 G光直接进入第三液晶板。 由第三液晶板反射的G光沿投影轴行进。 光学元件之间的角位置关系被设定为使得与每个分色镜的法线的入射角接近于反射角。
    • 9. 发明授权
    • Thin film magnetoresistive head for magnetic recording and reproducing
apparatus
    • 用于磁记录和再现装置的薄膜磁阻头
    • US5469317A
    • 1995-11-21
    • US255802
    • 1994-06-07
    • Yuji NagataToshio FukazawaKumiko WadaYoshihiro Tosaki
    • Yuji NagataToshio FukazawaKumiko WadaYoshihiro Tosaki
    • G11B5/29G11B5/39G11B5/127
    • G11B5/3925G11B5/3961G11B5/295
    • In a magnetoresistive head capable of performing favorable magnetic recording and reproduction, an overlap width of a front yoke and a magnetoresistive element is always wider than an overlap width of a back yoke and the magnetoresistive element. Generally, the magnetoresistive head varies in its reproduction efficiency by the overlap width of the yoke and magnetoresistive element. In particular, the reproduction output is significantly affected by the overlap width of the front yoke and magnetoresistive element, and when the overlap width of the front yoke becomes narrower than the overlap width of the back yoke, the reproduction output tends to decrease abruptly. Therefore, by keeping the overlap width of the front yoke always wider than the other, a stable reproduction output can be achieved. In particular, an outstanding effect is obtained in a multi-channel magnetoresistive head containing multiple magnetoresistive elements in one head.
    • 在能够进行有利的磁记录和再现的磁阻头中,前磁轭和磁阻元件的重叠宽度总是比后磁轭和磁阻元件的重叠宽度宽。 通常磁阻磁头通过磁轭和磁阻元件的重叠宽度在其再现效率上变化。 特别地,再现输出受到前磁轭和磁阻元件的重叠宽度的显着影响,并且当前磁轭的重叠宽度变得比背轭的重叠宽度窄时,再现输出趋于急剧下降。 因此,通过保持前轭的重叠宽度总是比另一方宽,可以实现稳定的再现输出。 特别地,在包含一个磁头中的多个磁阻元件的多通道磁阻磁头中获得了显着的效果。