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    • 4. 发明授权
    • Projector and keystone distortion correction method for projector
    • 投影仪和梯形失真校正方法
    • US07905607B2
    • 2011-03-15
    • US11862892
    • 2007-09-27
    • Susumu TakatsuNobuyuki OtsukiHirohisa Nakano
    • Susumu TakatsuNobuyuki OtsukiHirohisa Nakano
    • G03B21/14
    • H04N9/3185G03B21/145G03B21/147H04N9/3141
    • A projector includes an adjusting leg section configured to be capable of protruding/retracting outside/inside an exterior chassis and changing a tilt condition of the projector, an interlocking device that displaces based on the protruding/retracting movement of the adjusting leg section, a variable resistance device that has a resistance that varies based on displacement of the interlocking device, a voltage detection device that detects a voltage based on the resistance of the variable resistance device, a storage device that stores keystone distortion correction amount information, and a keystone distortion correction device that obtains a keystone distortion correction amount from the keystone distortion correction amount information based on the voltage detected by the voltage detection device, and that corrects the keystone distortion of the projection image using the keystone distortion correction amount.
    • 一种投影机,包括:调整支腿部,其能够在外部框架的外部/外部突出/缩回,并且改变投影仪的倾斜状态;基于调节支腿部的突出/缩回移动而移位的互锁装置;变量 具有基于互锁装置的位移而变化的电阻的电阻装置,基于可变电阻装置的电阻检测电压的电压检测装置,存储梯形失真校正量信息的存储装置和梯形失真校正量 装置,其基于由电压检测装置检测的电压从梯形失真校正量信息获得梯形失真校正量,并且使用梯形失真校正量校正投影图像的梯形失真。
    • 8. 发明授权
    • Projector with light-shielding member and holding member having varied coefficient of thermal conductivity
    • 具有遮光构件和保持构件的投影仪具有不同的导热系数
    • US08585215B2
    • 2013-11-19
    • US12693748
    • 2010-01-26
    • Hirohisa Nakano
    • Hirohisa Nakano
    • G03B21/14G03B21/18G03B21/22G03B21/26G02B9/00G02B9/08G02B26/02
    • G03B21/208G03B21/16
    • A projector includes: a light source, a light amount control device, an electro-optic unit, and a projection device, the light amount control device includes a light-shielding member configured to shield part of the luminous flux emitted from the light source, a holding member configured to hold the light-shielding member, the holding member is formed of a material having a coefficient of thermal conductivity lower than the coefficient of thermal conductivity of the light-shielding member, and a position changing unit configured to move or rotate in order to change the position of the light-shielding member, the light-shielding member is attached to the position changing unit via the holding member, and the light-shielding member comes into contact with the holding member via a projection provided on at least one of the light-shielding member and the holding member.
    • 投影机包括:光源,光量控制装置,电光单元和投影装置,光量控制装置包括遮光部件,其被构造成遮蔽从光源发射的光束的一部分, 保持构件,其构造成保持遮光构件,所述保持构件由导热系数低于所述遮光构件的导热系数的材料形成,以及位置改变单元,其构造成移动或旋转 为了改变遮光构件的位置,遮光构件经由保持构件安装到位置改变单元,并且遮光构件经由至少设置的突起与保持构件接触 遮光构件和保持构件中的一个。