Polarization-converting unit and projector using the same
    6.
    发明授权
    Polarization-converting unit and projector using the same 有权
    极化转换单元和使用其的投影机

    公开(公告)号:US06561650B2

    公开(公告)日:2003-05-13

    申请号:US09899286

    申请日:2001-07-06

    IPC分类号: G03B2114

    CPC分类号: G03B21/16

    摘要: The invention provides a polarization-converting unit capable of being sufficiently cooled even when polarization-converting elements and a lens array are unitized together. Polarization-converting elements and a second lens array are held by a holding frame and a flow-inlet-side opening is arranged under the holding frame, and a flow-outlet-side opening is arranged over the holding frame so as to form a polarization-converting unit. Therefore, cooling air can be allowed to vertically flow through a clearance between the polarization-converting elements and the second lens array, thereby sufficiently cooling the polarization-converting elements and the second lens array from the faces thereof opposing each other. Therefore, in particular, the thermal effect to phase-difference plates pasted to the opposing faces of the polarization-converting elements can be reduced, and thereby the phase-difference plates are prevented from being peeled off so as to maintain the sufficient image quality.

    摘要翻译: 本发明提供一种即使当偏振转换元件和透镜阵列被组合在一起时也能充分冷却的偏振转换单元。 偏振转换元件和第二透镜阵列由保持框架保持,并且流入侧开口设置在保持框架下方,并且流出侧开口布置在保持框架上以形成偏振 转换单元。 因此,可以使冷却空气垂直地流过偏振转换元件和第二透镜阵列之间的间隙,从而使偏振转换元件和第二透镜阵列从彼此相对的面充分冷却。 因此,特别地,可以减少粘贴到偏振转换元件的相对面上的相差板的热效应,从而防止相位差板被剥离,从而保持足够的图像质量。

    Projector and prism used therein
    7.
    发明授权
    Projector and prism used therein 有权
    其中使用的投影仪和棱镜

    公开(公告)号:US06556256B1

    公开(公告)日:2003-04-29

    申请号:US09516629

    申请日:2000-03-01

    IPC分类号: H04N574

    CPC分类号: H04N9/3114 G02B5/04

    摘要: A projector of the type which uses an optical modulator that modulates light by controlling the emitting direction of light applied to a light illumination surface in accordance with image information is provided with a reduction in size. In the projector a prism has a selective reflection/transmission surface which reflects illumination light emitted from an illumination optical system and impinging thereupon, and causes the illumination light to impinge upon the light illumination surface of an optical modulator at a predetermined angle. The prism allows the modulated light emitted from the optical modulator to be transmitted therethrough and emits the light to the projection optical system. The selective reflection/transmission surface is formed such that when the optical path of the illumination light is projected onto a plane parallel to the light illumination surface, the inclination of the central axis of the illumination light emitted from the illumination optical system and impinging upon the selective reflection/transmission surface is different from the inclination of the central axis of the illumination light reflected by the selective reflection/transmission surface and impinging upon the light illumination surface.

    摘要翻译: 使用通过根据图像信息控制施加到光照明表面的光的发射方向来调制光的类型的投影仪具有减小的尺寸。 在投影仪中,棱镜具有选择性反射/透射表面,其反射从照明光学系统发射的照射光并入射其上,并使照明光以预定角度照射在光学调制器的光照射面上。 棱镜允许从光调制器发射的调制光透射通过,并将光发射到投影光学系统。 选择反射/透射表面被形成为使得当照明光的光路投射到平行于光照射面的平面上时,从照明光学系统发射的照射光的中心轴的倾斜度和撞击在 选择反射/透射表面与由选择反射/透射表面反射的照明光的中心轴线的倾斜度不同,并且照射在光照射面上。

    Projection display device
    8.
    发明授权
    Projection display device 有权
    投影显示设备

    公开(公告)号:US06419364B2

    公开(公告)日:2002-07-16

    申请号:US09354701

    申请日:1999-07-16

    IPC分类号: G03B2116

    CPC分类号: G03B21/16

    摘要: This invention concerns reducing fan noise and preventing a light source, an optical element, and the like from deteriorating in a projector display device. The projection display device includes a light-source lamp unit, an optical system unit having a modulation device, a projection lens for enlarging and projecting an image formed by the optical system, a power supply unit for supplying electric power for driving the device, power supply intake fans, a modulation device intake fan, and exhaust fans. Fan noise can be reduced by driving only the power supply intake fans for a predetermined period after the device is powered on. Furthermore, the light-source lamp, the optical elements, and the like can be prevented from deteriorating by controlling the rotation speeds of the other fans based on detected temperatures detected by temperature sensors.

    摘要翻译: 本发明涉及降低风扇噪音并防止投影仪显示装置中的光源,光学元件等劣化。 投影型显示装置包括:光源灯单元,具有调制装置的光学系统单元,用于放大投影由该光学系统形成的图像的投影透镜;供给电力单元,其供给用于驱动该装置的电力;电源 进气风扇,调制装置进风扇和排风扇。 在设备通电后,只能通过仅驱动电源进风扇一段预定时间来降低风扇噪音。 此外,通过基于由温度传感器检测到的检测温度控制其他风扇的转速,可以防止光源灯,光学元件等劣化。

    Projector
    10.
    发明授权
    Projector 失效
    投影机

    公开(公告)号:US06364492B1

    公开(公告)日:2002-04-02

    申请号:US09077826

    申请日:1998-06-04

    IPC分类号: G03B2114

    摘要: In a projection display provided with an optical unit, a power source unit, an external case to store the optical unit and the power source unit, a suction opening (75) is formed in one end part of the power source unit, a discharge opening (77) is formed in the other end part, and the suction opening (75) is arranged in the vicinity of an air inlet in the external case. Because the suction opening (75) and the discharge opening (77) are provided, the inside of the power source unit can be independently and efficiently cooled, and the optical unit and the power source unit can be arranged closely to each other.

    摘要翻译: 在设置有光学单元,电源单元,存储光学单元的外部壳体和电源单元的投影显示器中,在电源单元的一个端部形成有吸入口(75),排出口 (77)形成在另一端部,吸入口(75)配置在外壳的空气入口附近。 由于设置有吸入口(75)和排出口(77),所以能够独立且有效地冷却电源单元的内部,能够使光学单元和电源单元彼此靠近地配置。