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    • 4. 发明申请
    • BACKLIGHT ARRANGEMENT FOR UNIFORM ILLUMINATION USING SURFACE-EMITTING (LED) LIGHT SOURCES
    • 使用表面发光(LED)光源进行均匀照明的背光布置
    • WO2007050274A1
    • 2007-05-03
    • PCT/US2006/039490
    • 2006-10-10
    • EASTMAN KODAK COMPANYLEE, JunwonKESSLER, DavidMI, Xiang-Dong
    • LEE, JunwonKESSLER, DavidMI, Xiang-Dong
    • G02F1/13357
    • G02F1/133602G02F1/133603G02F1/133611G02F2001/133507G02F2001/133607
    • A direct-view lighting arrangement (24) suitable for the backlight of a liquid crystal display (LCD) (22) , comprising (in that order) an array of surface-emitting light sources (LEDs) (14) with an angular luminous intensity distribution, an array of beam spreading optical elements (28) , an array of Fresnel lenses (32) to reduce beam divergence and an (optional) diffuser (38) . The refractive properties (convex and concave) of the beam spreading optical elements make the luminous flux essentially constant at the illumination plane (where the LCD is located). Thus, the beam spreading optical elements refract more light into higher beam angles thus compensating for the corresponding fall-off in luminous intensity of the sources. The thin sheet of Fresnel lenses reduces the divergence of the beams and directs them on to the diffuser. The (weak) diffuser serves to add a further beam divergence suitable for various applications, rather than itself producing uniformity in the illumination. The arrangement allows for a slimmer backlight design, eliminating the need for a strong diffuser having a high haze value (>90%). Keywords: Lambertian source,- illuminance, -luminance.
    • 一种适用于液晶显示器(LCD)(22)的背光源的直视照明装置(24),包括(依次)具有角度发光强度的表面发射光源(LED)阵列(14) 光束扩散光学元件阵列(28),减少光束发散的菲涅尔透镜阵列(32)和(可选)扩散器(38)。 光束扩散光学元件的折射特性(凸和凹)使光束在照明平面(LCD所处的位置)基本恒定。 因此,光束扩展光学元件将更多的光折射成更高的光束角度,从而补偿源的发光强度的相应的脱落。 菲涅尔透镜的薄片减少了光束的发散,并将它们引导到扩散器上。 (弱)扩散器用于增加适用于各种应用的另外的光束发散,而不是本身在照明中产生均匀性。 该布置允许更薄的背光设计,消除了对具有高雾度值(> 90%)的强扩散器的需要。 关键词:朗伯源, - 照度,亮度。
    • 6. 发明申请
    • BRIGHTNESS ENHANCEMENT FILM WITH LIGHT CONCENTRATORS
    • 亮度增强膜与轻型浓缩器
    • WO2005121850A1
    • 2005-12-22
    • PCT/US2005/017903
    • 2005-05-23
    • EASTMAN KODAK COMPANYLEE, JunwonKESSLER, David
    • LEE, JunwonKESSLER, David
    • G02B6/00
    • G02B6/0038G02B6/0065
    • A brightness enhancement article (30) provides light from a two-dimensional surface. The brightness enhancement article (30) has a plurality of light collecting structures (32), wherein each light collecting structure (32) is longitudinally extended in a length direction along the surface. Each light collecting structure (32) has an input aperture (33) optically coupled to a light-providing surface and an output aperture (35) distal from the input aperture (33), wherein the output aperture (35) has a surface area that is larger than the surface area of the input aperture (33). A pair of curved side walls (38) extend from the output aperture (35) toward the input aperture (33). In a cross section taken orthogonally with respect to the length direction, the curved side walls (38) approximate a parabolic curvature.
    • 亮度增强制品(30)提供来自二维表面的光。 亮度增强制品(30)具有多个聚光结构(32),其中每个聚光结构(32)沿着表面沿长度方向纵向延伸。 每个集光结构(32)具有与光提供表面光学耦合的输入孔(33)和远离输入孔(33)的输出孔(35),其中输出孔(35)的表面积 大于输入孔径(33)的表面积。 一对弯曲的侧壁(38)从输出孔(35)朝向输入孔(33)延伸。 在相对于长度方向垂直截取的横截面中,弯曲侧壁(38)接近抛物线曲率。
    • 9. 发明申请
    • DISPLAY APPARATUS USING LCD PANEL
    • 使用液晶面板的显示设备
    • WO2006118905A2
    • 2006-11-09
    • PCT/US2006/015815
    • 2006-04-26
    • EASTMAN KODAK COMPANYSILVERSTEIN, Barry, D.COBB, Joshua, MonroeKESSLER, David
    • SILVERSTEIN, Barry, D.COBB, Joshua, MonroeKESSLER, David
    • H04N9/31G02F1/1335
    • H04N9/315G02F1/1362H04N9/3105H04N9/3114H04N9/3117
    • A projection apparatus (10) has an illumination section with a light source (20) providing a substantially unpolarized illumination beam of multiple wavelengths. A multiple wavelength polarizer polarizes the substantially unpolarized illumination beam to provide a substantially polarized illumination beam of multiple wavelengths. A uniformizer conditions the substantially polarized illumination beam of multiple wavelengths to provide a uniformized polarized beam of multiple wavelengths. A color scrolling element provides a repeating, scrolled sequence of colors from a set of colors, thereby providing first, second, and third component wavelength illumination. A component wavelength modulating section accepts the sequence of first, second, and third component wavelength illumination from the color scrolling element and sequentially modulates the first, second, and third component wavelength illumination at a transmissive liquid crystal modulator panel (118) to provide a modulated component wavelength beam to a lens for projection toward a display surface (40).
    • 投影装置(10)具有带有光源(20)的照明部分,其提供多个波长的基本上非偏振的照明光束。 多波长偏振器使基本上非偏振的照明光束偏振,以提供多个波长的基本偏振的照明光束。 均匀化器调节多个波长的基本偏振的照明光束以提供多个波长的均匀化的偏振光束。 颜色滚动元件从一组颜色提供重复的,滚动的颜色序列,从而提供第一,第二和第三分量波长照明。 分量波长调制部分从彩色滚动元件接收第一,第二和第三分量波长照明的顺序,并且在透射型液晶调制器面板(118)上依次调制第一,第二和第三分量波长照明,以提供调制 分量波长束到透镜,用于向显示表面(40)突出。
    • 10. 发明申请
    • DISPLAY APPARATUS USING LCD PANEL
    • 使用液晶面板的显示设备
    • WO2006118881A2
    • 2006-11-09
    • PCT/US2006/015693
    • 2006-04-26
    • EASTMAN KODAK COMPANYSILVERSTEIN, Barry D.COBB, Joshua MonroeKESSLER, David
    • SILVERSTEIN, Barry D.COBB, Joshua MonroeKESSLER, David
    • H04N9/31G02B27/10H04N5/74
    • G02B27/149G02B27/1046G02B27/1053G02B27/123H04N9/3105H04N9/3117H04N9/315
    • A projection apparatus (10) has an illumination section (68) that provides at least a first, a second, and a third component wavelength illumination. At least two component wavelength modulating sections accept and modulate the component wavelength illumination to provide a modulated component wavelength beam. Each component wavelength modulating section has a portion of a monochrome transmissive liquid crystal modulator panel (118) that has been segmented into at least a first, a second, and a third spatially separate portion. A component wavelength polarizer directs substantially polarized light to the corresponding portion of the monochrome transmissive liquid crystal modulator panel. An illumination path Fresnel lens focuses incident illumination from the component wavelength polarizer through the corresponding portion of the monochrome transmissive liquid crystal modulator panel. An analyzer conditions the polarization of the modulated component wavelength beam. A lens forms an image of superimposed component wavelength beams for projection onto a display surface (40).
    • 投影装置(10)具有提供至少第一,第二和第三分量波长照明的照明部分(68)。 至少两个分量波长调制部分接受和调制分量波长照明以提供调制分量波长光束。 每个分量波长调制部分具有分割成至少第一,第二和第三空间分离部分的单色透射型液晶调制器面板(118)的一部分。 分量波长偏振器将大致偏振光引导到单色透射型液晶调制器面板的对应部分。 照明路径菲涅尔透镜将来自分量波长偏振器的入射照明聚焦到单色透射型液晶调制器面板的相应部分。 分析仪调节调制分量波长光束的极化。 A透镜形成用于投影到显示表面(40)上的叠加分量波长束的图像。