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    • 1. 发明申请
    • PROJECTION DISPLAY SURFACE PROVIDING SPECKLE REDUCTION
    • 投影显示表面提供减少光斑
    • WO2011159588A1
    • 2011-12-22
    • PCT/US2011/040118
    • 2011-06-13
    • EASTMAN KODAK COMPANYSILVERSTEIN, Barry, D.MARCUS, Michael, AlanKURTZ, Andrew, F.
    • SILVERSTEIN, Barry, D.MARCUS, Michael, AlanKURTZ, Andrew, F.
    • H04N9/31G03B21/56G03B21/60
    • H04N9/3132G03B21/60G03B33/16
    • A projection display surface for reducing speckle artifacts from a projector having at least one narrow band light source having an incident visible wavelength band, wherein the incident visible wavelength band has an incident peak wavelength and an incident bandwidth, comprising: a substrate having a reflective layer that reflects incident light over at least the incident visible wavelength band; and a fluorescent agent distributed over the reflective layer, wherein the fluorescent agent absorbs a fraction of the light in the incident visible wavelength band and emits light in an emissive visible wavelength band having an emissive peak wavelength and an emissive bandwidth; wherein return light from the projection display surface produced when incident light in the incident visible wavelength band is incident on the projection display surface contains light in both the incident visible wavelength band and emissive visible wavelength band, thereby reducing speckle artifacts.
    • 一种投影显示表面,用于减少具有入射可见波长带的至少一个窄带光源的投影仪的散斑伪像,其中入射的可见波长带具有入射峰值波长和入射带宽,包括:具有反射层 至少反射入射可见波长带的入射光; 以及分布在所述反射层上的荧光剂,其中所述荧光剂吸收所述入射可见波长带中的一部分光并发射具有发射峰值波长和发射带宽的发射可见光波长带中的光; 其中,当入射到所述投影显示面上的入射光入射到所述投影显示面上时,来自所述投影显示面的返回光包含入射的可见波长带和发光可见波长带中的光,从而减少斑点伪像。
    • 6. 发明申请
    • OPTICAL DETECTION OF DENTAL CARIES
    • 光学检测牙科
    • WO2007127036A1
    • 2007-11-08
    • PCT/US2007/008663
    • 2007-04-09
    • EASTMAN KODAK COMPANYWONG, Victor, C.LIANG, RongguangMARCUS, Michael, AlanMCLAUGHLIN, Paul, O.PATTON, David, Lynn
    • WONG, Victor, C.LIANG, RongguangMARCUS, Michael, AlanMCLAUGHLIN, Paul, O.PATTON, David, Lynn
    • A61B5/00
    • A61B5/0088
    • A method for caries detection uses an image capture device (30, 32) to obtain fluorescence image data from the tooth (20) by illuminating the tooth to excite fluorescent emission. A first enhanced image of the tooth is then obtained by illuminating the tooth at a first incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. A second enhanced image of the tooth is then obtained by illuminating the tooth at a second incident angle, obtaining a back-scattered reflectance image data from the tooth tissue, and combining the back-scattered reflectance image data with the fluorescence image data. The first and second enhanced images are then analyzed to select and display the best-contrast image. This method provides high contrast images for carious regions (58) on all tooth surfaces.
    • 用于龋齿检测的方法使用图像捕获装置(30,32)通过照亮牙齿来激发荧光发射来从牙齿(20)获得荧光图像数据。 然后通过以第一入射角照射牙齿获得牙齿的第一增强图像,从牙齿组织获得背散射反射图像数据,并将后向散射反射图像数据与荧光图像数据组合。 然后通过以第二入射角照射牙齿获得牙齿的第二增强图像,从牙齿组织获得反向散射反射图像数据,并将后向散射反射图像数据与荧光图像数据组合。 然后分析第一和第二增强图像以选择和显示最佳对比度图像。 该方法为所有牙齿表面上的龋齿区域(58)提供高对比度图像。
    • 9. 发明申请
    • DISPLAY APPARATUS USING BILINEAR ELECTROMECHANICAL MODULATOR
    • 显示设备使用双轨电动调制器
    • WO2009075757A2
    • 2009-06-18
    • PCT/US2008013341
    • 2008-12-03
    • EASTMAN KODAK COAGOSTINELLI JOHN ALPHONSEKOWARZ MAREK WLODZIMIERZMARCUS MICHAEL ALAN
    • AGOSTINELLI JOHN ALPHONSEKOWARZ MAREK WLODZIMIERZMARCUS MICHAEL ALAN
    • G03B21/14
    • H04N9/3164G03B21/2066G03B21/208G03B33/12H04N9/3132
    • A digital projection apparatus has a first light modulation subsystem with a first light source producing linear illumination of a first spectral color and a second light source producing linear illumination of a second spectral color. A first light modulator chip has at least two independently addressable linear arrays of light modulating devices. A first spatial filter blocks reflected light and transmits diffracted light along a first optical path. A second light modulation subsystem has at least a third light source producing linear illumination of a third spectral color. A second light modulator chip has at least one independently addressable linear array of light modulating devices. A second spatial filter blocks reflected light and transmits diffracted light along a second optical path. A color combining element directs modulated light onto a common optical path. Projection optics direct modulated light toward a scanning element for projection toward a display surface.
    • 数字投影设备具有第一光调制子系统,其具有产生第一光谱颜色的线性照明的第一光源和产生第二光谱颜色的线性照明的第二光源。 第一光调制器芯片具有至少两个独立可寻址的光调制装置的线性阵列。 第一空间滤光器阻挡反射光并且沿着第一光路传播衍射光。 第二光调制子系统具有产生第三光谱颜色的线性照明的至少第三光源。 第二光调制器芯片具有至少一个独立可寻址的光调制器件的线性阵列。 第二空间滤波器阻挡反射光并且沿着第二光路传输衍射光。 彩色组合元件将调制光引导到公共光路上。 投影光学器件将扫描元件直接调制成朝向显示面投影的元件。