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    • 6. 发明授权
    • Projection-type display apparatus
    • 投影型显示装置
    • US5743610A
    • 1998-04-28
    • US697707
    • 1996-08-27
    • Akitaka YajimaMotoyuki FujimoriMutsuya FuruhataTomiyoshi UshiyamaTerunaga KoideToshiaki HashizumeKiyoshi MiyashitaHiroshi HarimaKeijiro Naito
    • Akitaka YajimaMotoyuki FujimoriMutsuya FuruhataTomiyoshi UshiyamaTerunaga KoideToshiaki HashizumeKiyoshi MiyashitaHiroshi HarimaKeijiro Naito
    • G02B27/14G03B21/14H04N5/74H04N9/31
    • G03B33/12G02B27/1046G02B27/1073G02B27/145G02B27/149H04N9/3105H04N9/312H04N9/3141H04N9/3144H04N9/317H04N9/3182
    • A projection display comprising: a square column dichroic prism composed of four triangle prisms having equal refractive index together whose cross sections are right isosceles triangles such that three light valves are located adjacent to three exterior peripheral surfaces of dichroic prism to receive colored and modulated light beams therefrom and; a filter for absorbing light with a specified wavelength range, leaked from surface of dichroic prism at the opposite side of incident light surface and directed to liquid crystal light valve, the filter being located between liquid crystal light valves and surface of dichroic prism. As for construction of the dichroic prism itself, specifically, of the four aforementioned triangular prisms, the first triangular prism and the aforementioned third triangular prism are mutually affixed in a condition in which there is a first step difference in the vertical direction. The first exposed side is formed on one edge of the affixed side of the first triangular prism. Similarly, the second triangular prism and the fourth triangular prism are attached to each other such that there is a second step difference on the same edge, and a second exposed side is formed on one edge of the affixed surface of the second triangular prism. Further, the first and the third triangular prisms and the second and the fourth triangular prisms are attached, with a step difference between them, in such a way that the aforementioned first exposed side and the aforementioned second exposed side are located on the edges facing the same direction; and a third exposed surface that is orthogonal to the aforementioned first and second exposed surfaces is formed between the aforementioned first triangular prism and the aforementioned second triangular prism.
    • 一种投影显示器,包括:方柱列分色棱镜,其由具有相等折射率的四个三角棱镜组成,其横截面为右等腰三角形,使得三个光阀位于与分色棱镜的三个外周表面相邻以接收有色调制光束 和 用于吸收具有特定波长范围的光的滤光器,从入射光面的相对侧的二向色棱镜的表面泄漏并且指向液晶光阀,该滤光器位于液晶光阀和二向色棱镜表面之间。 关于二向色棱镜本身的结构,具体地,在上述四个上述三角棱镜中,第一三角形棱镜和上述第三三棱镜在垂直方向上具有第一阶差的状态下相互固定。 第一暴露侧形成在第一三角形棱镜的固定侧的一个边缘上。 类似地,第二三角棱镜和第四三角棱镜彼此附接,使得在同一边缘上存在第二阶梯差,并且第二暴露侧形成在第二三角棱镜的固定表面的一个边缘上。 此外,第一和第三三角形棱镜和第二和第四三角棱镜以它们之间的台阶差附接,使得上述第一暴露侧和上述第二暴露侧位于面向 同方向 并且在上述第一三角棱镜和上述第二三棱镜之间形成有与上述第一和第二暴露表面正交的第三暴露表面。
    • 10. 发明授权
    • Projection display device
    • 投影显示设备
    • US06402324B1
    • 2002-06-11
    • US09335791
    • 1999-06-18
    • Akitoshi KurodaMutsuya Furuhata
    • Akitoshi KurodaMutsuya Furuhata
    • G03B2116
    • G03B21/006
    • A power supply unit is formed so as to be divided into first and second power supply blocks, which are disposed on both sides of a projecting lens. This allows the power supply blocks to be efficiently disposed in a projection display device, so that dead space is not easily formed in the projection display device, making it possible to reduce the size of the projection display device. First and second power supply block cooling paths are formed at first and second power supply blocks which are liable to generate heat, respectively. A light modulating system cooling path is formed at a light modulating system disposed at substantially the center of the projection display device. Therefore, even when these component parts are closely disposed in the projection display device of a compact size, proper cooling operations can be carried out, making it possible to cool the entire projection display device more efficiently.
    • 电源单元被形成为被分成设置在投影透镜两侧的第一和第二电源块。 这使得电源块能够有效地设置在投影显示装置中,使得在投影显示装置中不容易形成死区,从而可以减小投影显示装置的尺寸。 第一和第二电源块冷却路径分别形成在易于产生热量的第一和第二电源块处。 光调制系统冷却路径形成在设置在投影显示装置的大致中心的光调制系统。 因此,即使这些部件紧密地配置在小型的投影型显示装置中,也能够进行适当的冷却运转,能够更有效地冷却投影显示装置整体。