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    • 26. 发明专利
    • Projection apparatus and projection method
    • 投影设备和投影方法
    • JP2010102300A
    • 2010-05-06
    • JP2009157929
    • 2009-07-02
    • Casio Computer Co Ltdカシオ計算機株式会社
    • SHIBAZAKI MAMORU
    • G03B21/14G03B21/00H01L33/00H01S5/042
    • H04N9/3164H04N9/3138H04N9/3155
    • PROBLEM TO BE SOLVED: To provide a projection apparatus and a projection method which enable a plurality of light-emitting elements to be driven efficiently and improve the quality of projected images and increase the lifetimes of plural light-emitting elements. SOLUTION: The projection apparatus includes an LED array 17, having a plurality (n) of light-emitting elements (where n is a natural number larger than 1) and a W driver 23; and a projection light processing section 24 and the W driver 23 for driving each of the (n) LED groups that make up the LED array 17, by a pulse width modulation scheme with a phase difference, based on λ/n (where λ is a lighting period unit), in synchronism with the lighting period unit. COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:提供能够有效驱动多个发光元件并提高投射图像的质量并增加多个发光元件的寿命的投影装置和投影方法。 投影装置包括具有多个(n)个发光元件(其中n为大于1的自然数)的LED阵列17和W驱动器23; 以及投影光处理部24和W驱动器23,用于通过基于λ/ n的相位差的脉冲宽度调制方式驱动构成LED阵列17的(n)个LED组中的每一个(其中λ为 照明周期单元),与照明周期单元同步。 版权所有(C)2010,JPO&INPIT