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    • 75. 发明申请
    • Prism assembly for separating light
    • 用于分离光的棱镜组件
    • US20060132718A1
    • 2006-06-22
    • US11064165
    • 2005-02-23
    • Scott LernerAnurag GuptaJames Ring
    • Scott LernerAnurag GuptaJames Ring
    • G03B21/00
    • G02B27/1026G02B27/14G02B27/143H04N9/315
    • A prism assembly is provided. The prism assembly comprises a first prism component having a triangular cross-section along an optical path, a second prism component having a first quadrilateral cross-section along the optical path, a third prism component having a second quadrilateral cross-section along the optical path, a first dichroic interface between the first and second prism components and along the third prism component and configured to reflect a first range of wavelengths of the light, and a second dichroic interface between the first and third prism components and along the second prism component and configured to reflect a second range of wavelengths of the light.
    • 提供棱镜组件。 棱镜组件包括沿着光路具有三角形横截面的第一棱镜部件,沿光路具有第一四边形横截面的第二棱镜部件,具有沿光路的第二四边形横截面的第三棱镜部件 在第一和第二棱镜部件之间并且沿着第三棱镜部件的第一分色界面,并且被配置为反射光的第一波长范围,以及第一和第三棱镜部件之间的第二分色界面以及沿着第二棱镜部件,以及 被配置为反射光的第二波长范围。
    • 79. 发明申请
    • System and method of contrast enhancement in digital projectors
    • 数字投影机对比度增强的系统和方法
    • US20050162616A1
    • 2005-07-28
    • US10764147
    • 2004-01-23
    • Anurag GuptaP. Howard
    • Anurag GuptaP. Howard
    • G03B21/00H04N5/74
    • H04N5/7458H04N9/3141
    • A system and method for enhancing contrast in a digital projector is disclosed. The method includes positioning a first optical component, such as a digital micro-mirror device (DMD), and a second optical component, such as a total internal reflection (TIR) prism, along a light path. The first optical component and the second optical component are separated by a gap. The perimeter of the gap is sealed with a sealant. The gap may be evacuated to provide substantially a vacuum in the gap. Alternatively, the gap may be filled with a fluid, such as a liquid or a gel. The fluid may have a refractive index substantially similar to the refractive index of at least one of the optical components.
    • 公开了一种用于增强数字投影仪中的对比度的系统和方法。 该方法包括沿着光路定位诸如数字微镜装置(DMD)的第一光学部件和诸如全内反射(TIR)棱镜的第二光学部件。 第一光学部件和第二光学部件被间隙隔开。 间隙的周长用密封剂密封。 间隙可以被抽空以在间隙中提供基本上真空。 或者,间隙可以用流体(例如液体或凝胶)填充。 流体可以具有与至少一个光学部件的折射率基本相似的折射率。