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    • 2. 发明授权
    • Color image display apparatus
    • 彩色图像显示装置
    • US06511184B2
    • 2003-01-28
    • US09979874
    • 2001-11-27
    • Shigekazu YamagishiHiroshi MiyaiHitoshi NodaAtsushi Hatakeyama
    • Shigekazu YamagishiHiroshi MiyaiHitoshi NodaAtsushi Hatakeyama
    • G03B2100
    • H04N9/3117G02B26/123
    • Three colors of light beams from a light source travel via a first optical system to strike a reflecting surface of a rotating polygon mirror, or mirrors, at different angles without overlapping. The rotating polygon mirror or mirrors reflect the light beams for scanning. The reflected light beams enter a second optical system at different angles to illuminate an image display panel at different portions. On the image display panel, belt-like regions illuminated by the light beams of individual colors are formed in parallel with each other, and these illuminated regions are moved continuously by scanning. A formed color image is magnified and projected by a projection optical system. With such a projection type image display apparatus, a display having high resolution and light efficiency that is also small, thin and inexpensive is achieved.
    • 来自光源的三种光束经由第一光学系统行进,以不同角度撞击旋转多面镜或反射镜的反射表面而不重叠。 旋转的多面镜或反射镜反射用于扫描的光束。 反射光束以不同的角度进入第二光学系统,以在不同部分照射图像显示面板。 在图像显示面板上,由各种颜色的光束照射的带状区域彼此平行地形成,并且这些照射区域通过扫描连续移动。 形成的彩色图像被投影光学系统放大和投影。 利用这种投影型图像显示装置,实现了分辨率和光效率也小,薄且廉价的显示器。
    • 3. 发明授权
    • Projection image display
    • 投影图像显示
    • US06666558B1
    • 2003-12-23
    • US09763936
    • 2001-02-27
    • Shigekazu YamagishiAtsushi HatakeyamaHitoshi Noda
    • Shigekazu YamagishiAtsushi HatakeyamaHitoshi Noda
    • G03B2126
    • G02B3/0043G02B3/0056G02B3/0062G02B26/008G03B21/2013G03B27/547H04N5/7441H04N9/3114
    • A projection display system includes: two light sources (102, 105); a condenser (103, 106) for condensing the light from the light sources; a time-division color separating optical system (108) for temporally switching the incident light into a first, second, or third color of light to be emitted; a light valve (118) capable of modulating the incident light individually for each pixel; a lighting optical system (111, 112, 114) for directing the light from the time-division color separating optical system onto the light valve, and a projection optical system (123) for magnifying and projecting a pixel on the light valve. The light from the two light sources (102, 105) is condensed on the time-division color separating optical system or its vicinity by the condenser (103, 106), and then superimposed. This can provide a projection display system that performs time-division driving and can achieve high-brightness projection images without increasing the size and cost of a system.
    • 投影显示系统包括:两个光源(102,105); 用于冷凝来自光源的光的冷凝器(103,106); 时分分离光学系统(108),用于将入射光瞬时切换成要发射的第一,第二或第三种颜色的光; 能够对每个像素单独调制入射光的光阀(118); 用于将来自时分色分离光学系统的光引导到光阀上的照明光学系统(111,112,114)以及用于放大和投影光阀上的像素的投影光学系统(123)。 来自两个光源(102,105)的光通过冷凝器(103,106)在时分色分离光学系统或其附近被冷凝,然后叠加。 这可以提供一种执行时分驱动并且可以在不增加系统的尺寸和成本的情况下实现高亮度投影图像的投影显示系统。
    • 4. 发明授权
    • Color image display device and projection-type image display apparatus
    • 彩色图像显示装置和投影型图像显示装置
    • US06568811B2
    • 2003-05-27
    • US09870909
    • 2001-05-31
    • Hitoshi NodaHiroaki SatoShigekazu Yamagishi
    • Hitoshi NodaHiroaki SatoShigekazu Yamagishi
    • G03B2100
    • G09G3/3413G09G3/342G09G2310/0235G09G2310/024G09G2360/16H04N9/3117
    • Belt-like regions illuminated by red, green and blue light beams are formed on an image display panel, and the illuminated regions are moved continuously. Each pixel of the image display panel is driven by a signal corresponding to the color of light entering the pixel. This makes it possible to display a color image with only one image display panel having neither a color filter nor a pixel exclusively for the respective light beams. The adjacent regions illuminated by two colors of light are overlapped partially, and the pixels in the overlapping portions are driven by a brightness signal component. By overlapping the adjacent illuminated regions, a focused area of the light beams can be enlarged, achieving a smaller focusing optical system, making it possible to reduce the size of the entire device.
    • 由红色,绿色和蓝色光束照射的带状区域形成在图像显示面板上,并且照射区域被连续移动。 图像显示面板的每个像素由对应于进入像素的光的颜色的信号驱动。 这使得可以仅对一个既不具有滤色器的图像显示面板也不显示专用于各个光束的像素来显示彩色图像。 由两种颜色的光照亮的相邻区域部分地重叠,并且重叠部分中的像素由亮度信号分量驱动。 通过重叠相邻的照明区域,可以扩大光束的聚焦区域,实现较小的聚焦光学系统,使得可以减小整个装置的尺寸。
    • 5. 发明授权
    • Projection type image display apparatus with circuit for correcting
luminance nonuniformity
    • 具有用于校正亮度不均匀性的电路的投影型图像显示装置
    • US5838396A
    • 1998-11-17
    • US571379
    • 1995-12-13
    • Tetsuro ShiotaHiroshi MiyaiHitoshi Noda
    • Tetsuro ShiotaHiroshi MiyaiHitoshi Noda
    • H04N5/20H04N5/57H04N5/74H04N9/31H04N9/72H04N9/69
    • H04N9/72H04N9/31H04N5/20H04N5/57H04N5/74
    • In a projection type image display apparatus, the screen is divided and a memory to record luminance correction data corresponding to the divided regions is provided, and addresses of the divided regions of the screen are set by an address counter, synchronized with the input video signal. The luminance correction data are read successively by inputting the addresses to the memory, and luminance nonuniformity on the screen is corrected through operational processing of the correction value converted in an analog value by a D/A converter and the input video signal. The luminance correction data is obtained by computing measurement results of respective luminance characteristics of red, green, and blue colors on the screen and separately recorded as an amplitude correction component and a DC level correction component. By multiplying and adding the correction data to the input video signal respectively, nonuniformities in luminance and color from low luminance level to high luminance level can be precisely corrected. Also, as the read start position and read direction of the memory can be set corresponding to sweep direction of a projection type image display apparatus, the projection direction to the screen in a projection type image display apparatus can be easily changed without affecting the operation of luminance correction.
    • 在投影型图像显示装置中,屏幕被分割,并且提供用于记录与分割区域相对应的亮度校正数据的存储器,并且通过地址计数器设置屏幕的划分区域的地址,与输入视频信号同步 。 通过向存储器输入地址来连续读取亮度校正数据,并且通过D / A转换器和输入视频信号对通过模拟值转换的校正值的操作处理来校正画面上的亮度不均匀性。 通过计算屏幕上的红色,绿色和蓝色各自的亮度特性的测量结果并分别记录为振幅校正分量和直流电平校正分量来获得亮度校正数据。 通过将校正数据分别相乘并将其添加到输入视频信号,可以精确地校正亮度和颜色从低亮度级到高亮度级的不均匀性。 此外,随着可以根据投影型图像显示装置的扫描方向设置存储器的读取开始位置和读取方向,可以容易地改变投影型图像显示装置中的屏幕的投影方向而不影响投影型图像显示装置的操作 亮度校正。