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    • 12. 发明授权
    • Automatic focusing system
    • 自动对焦系统
    • US4920420A
    • 1990-04-24
    • US269699
    • 1988-11-10
    • Kenji SanoTakesuke MaruyamaHironobu SatohMasaharu DeguchiToshio Murakami
    • Kenji SanoTakesuke MaruyamaHironobu SatohMasaharu DeguchiToshio Murakami
    • H04N5/232
    • H04N5/23212
    • There is provided an automatic focusing system which is used in a video camera or the like. A master lens is finely vibrated and moved by using a moving mechanism consisting of a stepping motor and a lead screw. A speed control circuit to set a moving speed of the master lens is provided. The moving speed of the master lens is set by an output signal of the speed control circuit and the master lens is moved by the moving mechanism. The moving speed of the master lens is optimally controlled and the out-of-step phenomenon in the stepping motor is eliminated. Since the master lens is accurately moved, the focusing operation is executed at a high accuracy. In addition, the influence by the unnecessary vibration (ringing) which is caused by the sudden change in moving speed of the master lens is eliminated. Therefore, since the master lens normally performs a predetermined micro vibration, the correct focusing can be accurately discriminated. Further, when a change in amount of the high frequency component of a video signal is large, since the moving speed of the master lens increases, the operating time until the correct focus is obtained is reduced.
    • 提供了一种用于摄像机等的自动对焦系统。 通过使用由步进电机和导螺杆组成的移动机构,将主镜片精细振动并移动。 提供用于设定主镜头的移动速度的速度控制电路。 主镜头的移动速度由速度控制电路的输出信号设定,主镜头由移动机构移动。 主镜头的移动速度被最佳地控制,并且消除了步进电机中的失步现象。 由于主镜头被精确地移动,所以以高精度执行聚焦操作。 此外,消除了由主镜片的移动速度的突然变化引起的不必要的振动(振铃)的影响。 因此,由于主镜头通常执行预定的微振动,因此可以准确地识别正确的聚焦。 此外,当视频信号的高频分量的变化量大时,由于主镜头的移动速度增加,所以获得正确对焦之前的操作时间被减少。
    • 15. 发明授权
    • Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
    • 物镜设计方法,透镜,光学系统,光头,以及使用其的光盘装置
    • US07414796B2
    • 2008-08-19
    • US10985926
    • 2004-11-12
    • Yasuyuki SugiTakesuke Maruyama
    • Yasuyuki SugiTakesuke Maruyama
    • G02B13/18G11B7/00
    • G11B7/1374G02B3/00G11B7/1353G11B7/139G11B7/13922G11B2007/0006
    • When the DVD provided with the DVD substrate 2 having thickness t2 of 0.6 mm is installed in the optical disc apparatus, the light beam 4 having wavelength λ1=655 nm is used as luminous flux of numerical aperture NA=0.63 to be condensed on the information surface 2a on the DVD substrate 2. When the CD provided with the CD substrate 3 having thickness t2 of 1.2 mm is installed in the optical disc apparatus, the light beam 5 having wavelength λ2=790 nm is effectively used as luminous flux of approximate numerical aperture NA=0.45 to be condensed on the information surface 3a on the DVD substrate 3. The wavefront aberration caused by a thickness difference between the DVD substrate 2 and CD substrate 3 is canceled out by the chromatic aberration caused by a wavelength difference between the light beams 4 and 5. Therefore, in spite of the difference in the transparent substrates, the light beams are suitably condensed respectively on the information surface 2a and 3a.
    • 当设置有厚度为0.2mm的DVD基板2的DVD被安装在光盘装置中时,波长λ1 = 655nm的光束4是 用作数值孔径NA = 0.63的光通量,以在DVD基板2上的信息表面2a上被冷凝。当安装有厚度为t2×1.2mm的CD基板3的CD时, 在光盘装置中,波长λ2λ= 790nm的光束5被有效地用作近似数值孔径NA = 0.45的光通量,以被聚集在DVD基板上的信息表面3a上 由DVD基板2和CD基板3之间的厚度差引起的波前像差由于光束4和5之间的波长差引起的色差而被抵消。因此,尽管透明基板 ,光束分别适当地冷凝 信息表面2a和3a。
    • 16. 发明授权
    • Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
    • 物镜设计方法,透镜,光学系统,光头,以及使用其的光盘装置
    • US06965482B2
    • 2005-11-15
    • US10895352
    • 2004-07-21
    • Yasuyuki SugiTakesuke Maruyama
    • Yasuyuki SugiTakesuke Maruyama
    • G02B13/00G02B3/00G02B13/18G11B7/00G11B7/135G11B7/1374
    • G11B7/1374G02B3/00G11B7/1353G11B7/139G11B7/13922G11B2007/0006
    • When the DVD provided with the DVD substrate 2 having thickness t2 of 0.6 mm is installed in the optical disc apparatus, the light beam 4 having wavelength λ1=655 nm is used as luminous flux of numerical aperture NA=0.63 to be condensed on the information surface 2a on the DVD substrate 2. When the CD provided with the CD substrate 3 having thickness t2 of 1.2 mm is installed in the optical disc apparatus, the light beam 5 having wavelength λ2=790 nm is effectively used as luminous flux of approximate numerical aperture NA=0.45 to be condensed on the information surface 3a on the DVD substrate 3. The wavefront aberration caused by a thickness difference between the DVD substrate 2 and CD substrate 3 is canceled out by the chromatic aberration caused by a wavelength difference between the light beams 4 and 5. Therefore, in spite of the difference in the transparent substrates, the light beams are suitably condensed respectively on the information surface 2a and 3a.
    • 当设置有厚度为0.2mm的DVD基板2的DVD被安装在光盘装置中时,波长λ1 = 655nm的光束4是 用作数值孔径NA = 0.63的光通量在DVD基板2上的信息表面2a上聚光。 当光盘装置中安装有具有1.2mm厚度t 2的CD基板3的CD时,波长λ2 = 790nm的光束5是 有效地用作近似数值孔径NA = 0.45的光通量在DVD基板3上的信息表面3a上聚焦。 由DVD基板2和CD基板3之间的厚度差引起的波前像差由于光束4,5之间的波长差造成的色差而抵消。 因此,尽管透明基板的差异,光束分别适当地冷凝在信息表面2a和3a上。
    • 19. 发明授权
    • Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
    • 物镜设计方法,透镜,光学系统,光头,以及使用其的光盘装置
    • US06678096B2
    • 2004-01-13
    • US10330289
    • 2002-12-30
    • Yasuyuki SugiTakesuke Maruyama
    • Yasuyuki SugiTakesuke Maruyama
    • G02B1318
    • G11B7/1374G02B3/00G11B7/1353G11B7/139G11B7/13922G11B2007/0006
    • When the DVD provided with the DVD substrate 2 having thickness t2of 0.6 mm is installed in the optical disc apparatus, the light beam 4 having wavelength &lgr;1=655 nm is used as luminous flux of numerical aperture NA=0.63 to be condensed on the information surface 2a on the DVD substrate 2. When the CD provided with the CD substrate 3 having thickness t2 of 1.2 mm is installed in the optical disc apparatus, the light beam 5 having wavelength &lgr;2=790 nm is effectively used as luminous flux of approximate numerical aperture NA=0.45 to be condensed on the information surface 3a on the DVD substrate 3. The wavefront aberration caused by a thickness difference between the DVD substrate 2 and CD substrate 3 is canceled out by the chromatic aberration caused by a wavelength difference between the light beams 4 and 5. Therefore, in spite of the difference in the transparent substrates, the light beams are suitably condensed respectively on the information surface 2a and 3a.
    • 当设置有厚度为0.2mm的DVD基板2的DVD被安装在光盘装置中时,使用波长λ1= 655nm的光束4作为数值孔径NA = 0.63的光通量在信息表面上被冷凝 当设置有厚度t2为1.2mm的CD基板3的CD安装在光盘装置中时,波长λ2= 790nm的光束5被有效地用作近似数值孔径的光通量 NA = 0.45被聚集在DVD基板3上的信息表面3a上。由DVD基板2和CD基板3之间的厚度差引起的波前像差由于光束之间的波长差引起的色差而被抵消 因此,尽管透明基板的差异,光束分别适当地冷凝在信息表面2a和3a上。
    • 20. 再颁专利
    • Liquid crystal display element and micro-lens arrangement and a display using the same
    • 液晶显示元件和微透镜布置以及使用其的显示器
    • USRE38175E1
    • 2003-07-08
    • US09429745
    • 1999-10-28
    • Yoshio ArikiTakashi KakudaMasaharu DeguchiTakesuke MaruyamaFutoshi Yamasaki
    • Yoshio ArikiTakashi KakudaMasaharu DeguchiTakesuke MaruyamaFutoshi Yamasaki
    • G02F11335
    • H04N9/315G02F1/133526H04N9/3105H04N9/312H04N9/3182
    • A liquid crystal display includes an illumination optical system which has a light source for emitting light and acts to irradiate the light from the light source on a light bulb on which an optical image is formed in accordance with a video signal, and a transmission-type liquid crystal display element for displaying the image information by the electrooptical effect of the liquid injected between a pair of transparent substrates of the light bulb. The liquid crystal display element is formed of a micro-lens array which has unit lenses provided to oppose the respective picture elements of the picture element array of the liquid crystal and thus to have the same array as the picture element array of the liquid crystal. Since this micro-lens array is closely attached to the side of liquid crystal display element to which the luminous flux emitted from the light source is incident, or integrally formed within the liquid crystal cell substrate, the liquid crystal display element has a high aperture ratio.
    • 液晶显示器包括照明光学系统,该照明光学系统具有用于发光的光源,并且用于根据视频信号将来自光源的光照射到其上形成有光学图像的灯泡上,并且透射型 液晶显示元件,用于通过注入在灯泡的一对透明基板之间的液体的电光效应来显示图像信息。 液晶显示元件由微透镜阵列形成,该微透镜阵列具有设置为与液晶的像素阵列的各个像素相对的单位透镜,因此具有与液晶的像素阵列相同的阵列。 由于该微透镜阵列紧密地附着在从光源发射的光束入射的液晶显示元件的一侧或者一体地形成在液晶单元基板内,所以液晶显示元件具有高的开口率 。