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    • 4. 发明授权
    • Illumination apparatus for planar display device
    • 平面显示装置照明装置
    • US06935764B2
    • 2005-08-30
    • US10259842
    • 2002-09-30
    • Jin-seung ChoiHwan-young ChoiJee-hong MinSu-mi LeeJin-hwan KimMoon-gyu Lee
    • Jin-seung ChoiHwan-young ChoiJee-hong MinSu-mi LeeJin-hwan KimMoon-gyu Lee
    • G02B6/00F21V8/00F21Y101/02G02F1/13357F21V5/00
    • G02B6/002G02B6/0068
    • An illumination apparatus for planar display devices, including an optical element for making light travel parallel to an optical axis, is provided. The illumination apparatus includes a dot light source for radiating light, and a light guide plate having the optical element. The optical element is composed of a first refraction facet, which is adjacent to the dot light source and increases the emission angle of the light, and a second refraction facet, which is isolated a predetermined distance from the first refraction facet while facing the first refraction facet and reduces the emission angle of the light. In this structure, the light travels parallel to the optical axis. In the illumination apparatus, the emission angle of incident light is reduced, preferably, the light travels parallel to the optical axis. Therefore, areas not reached by light, between adjacent dot light sources, are eliminated, and light is uniformly incident upon a hologram so that the luminance and intensity of light emitted from the light guide plate are uniformly distributed.
    • 提供了一种用于平面显示装置的照明装置,包括用于使光行进平行于光轴的光学元件。 照明装置包括用于照射光的点光源和具有光学元件的导光板。 光学元件由与点光源相邻的第一折射面和增加光的发射角的第一折射面和与第一折射面隔开预定距离而面向第一折射的第二折射面 并减少光的发射角。 在这种结构中,光平行于光轴行进。 在照明装置中,入射光的发射角度减小,优选地,光平行于光轴行进。 因此,消除了相邻点光源之间未被光照射的区域,并且光均匀地入射到全息图上,使得从导光板发射的光的亮度和强度均匀分布。
    • 10. 发明授权
    • Multi-laser scanning unit
    • 多功能激光扫描单元
    • US06181448B2
    • 2001-01-30
    • US09427073
    • 1999-10-26
    • Hwan-young ChoiWon-hyung LeeSung-min ChoMoon-gyu LeeJee-hong MinYoung-il KimJin-seung ChoiJae-yong Eum
    • Hwan-young ChoiWon-hyung LeeSung-min ChoMoon-gyu LeeJee-hong MinYoung-il KimJin-seung ChoiJae-yong Eum
    • G02B532
    • G02B26/106
    • A multi-laser scanning unit (LSU) in which scanning lines incident parallel onto a photoreceptor have the same scanning direction. The multi-laser scanning unit includes: a driving source for providing a rotatory force; a deflection disk installed around a rotary shaft of the driving source having a plurality of sectors each with a hologram pattern for diffracting and deflecting incident light, for scanning light through rotation; a plurality of light sources installed facing one surface of the deflection disk for irradiating a plurality of light lines onto predetermined points of the deflection disk; and a light path changing portion for changing traveling paths of the plurality of scanning lines formed by the rotation of the deflection disk, wherein the plurality of light sources are arranged such that two incident points which are the farthest from each other among the plurality of incident points formed on the deflection disk form 180° with the center point of the deflection disk.
    • 多个激光扫描单元(LSU),其中平行于感光体的扫描线具有相同的扫描方向。 多激光扫描单元包括:用于提供旋转力的驱动源; 安装在所述驱动源的旋转轴周围的偏转盘具有多个扇区,每个扇区均具有用于衍射和偏转入射光的全息图,用于通过旋转扫描光; 多个光源,其安装在偏转盘的一个表面上,用于将多条光线照射到偏转盘的预定点上; 以及光路改变部分,用于改变通过偏转盘的旋转形成的多条扫描线的行进路径,其中多个光源被布置成使得在多个事件中彼此最远的两个入射点 在偏转盘上形成的点与偏转盘的中心点形成180°。