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    • 5. 发明申请
    • OPTICAL IMAGING LENS AND ARRAY THEREOF
    • 光学成像镜片及其阵列
    • US20110194019A1
    • 2011-08-11
    • US13016579
    • 2011-01-28
    • San-Woei SHYUHuang-Chang ChenChih-Peng WangTe-Cheng LinBo-Yuan Shih
    • San-Woei SHYUHuang-Chang ChenChih-Peng WangTe-Cheng LinBo-Yuan Shih
    • H04N5/225
    • H04N5/2254G02B13/0025H04N5/2257
    • A single-piece optical imaging lens and an array thereof are revealed. The optical imaging lens includes a lens and an image sensor arranged at an image-side surface of the lens. The lens includes an object-side surface, an image-side surface, an optical area, and a non-optical area. The optical imaging lens satisfies the following conditions: BFL/TTL=0.55˜0.81, OH/OD=1.0˜3.6. TTL is total length from the object-side surface of the lens on the optical axis to the image sensor. BFL is back focal length of the imaging lens. OD is the distance between an object on the optical axis and the object-side surface of the lens. OH is the largest height of an object vertical to the optical axis of OD. The single-piece optical imaging lens array is used to produce a plurality of single-piece optical imaging lenses by cutting.
    • 揭示了单片式光学成像透镜及其阵列。 光学成像透镜包括配置在透镜的像侧面的透镜和图像传感器。 透镜包括物体侧表面,图像侧表面,光学区域和非光学区域。 光学成像透镜满足以下条件:BFL / TTL = 0.55〜0.81,OH / OD = 1.0〜3.6。 TTL是从光轴的物体侧表面到图像传感器的总长度。 BFL是成像镜头的后焦距。 OD是光轴上的物体与透镜的物体侧表面之间的距离。 OH是垂直于OD光轴的物体的最大高度。 单片式光学成像透镜阵列用于通过切割来生产多个单片光学成像透镜。
    • 7. 发明授权
    • Two-element fθ lens with short focal distance for laser scanning unit
    • 双元素 镜头具有短焦距的激光扫描装置
    • US07817320B1
    • 2010-10-19
    • US12634548
    • 2009-12-09
    • Chih-Peng WangHuang-Chang ChenSan-Woei Shyu
    • Chih-Peng WangHuang-Chang ChenSan-Woei Shyu
    • G02B26/08
    • G02B13/0005G02B26/125H04N1/1135
    • A two-element fθ lens with short focal distance is used for a laser scanning unit with a polygon mirror and the two-element fθ lens comprises a first lens and a second lens. The first lens is a positive power meniscus lens and the second lens is a negative power meniscus lens in the main scanning direction. The first lens has a first and a second optical surface, the second lens has a third and a fourth optical surface. Concave surfaces of the first, second and third optical surfaces are disposed on the polygon mirror side. The fourth optical surface has an inflection point in SAG counted from the optical axis to peripheral portion and its paraxial portion is convex that is disposed on the polygon mirror side. The two-element fθ lens satisfies an optical condition of 0.4557≦tan(β)≦0.7265, wherein β is a maximum effective window angle.
    • 一个双元素的支架; 具有短焦距的镜头用于具有多面镜和双元件的激光扫描单元; 透镜包括第一透镜和第二透镜。 第一透镜是正功率弯月透镜,第二透镜是在主扫描方向上的负光焦度透镜。 第一透镜具有第一和第二光学表面,第二透镜具有第三和第四光学表面。 第一,第二和第三光学面的凹面设置在多面镜一侧。 第四光学面具有从光轴到周边部的SAG的拐点,其近轴部为凸状,配置在多面镜侧。 双元素 透镜满足0.4557≦̸ tan(&bgr;)≦̸ 0.7265的光学条件,其中&bgr; 是最大有效窗口角度。
    • 8. 发明授权
    • Two-element Fθ lens with short focal distance for laser scanning unit
    • 双元素F&Thetas; 镜头具有短焦距的激光扫描装置
    • US07800806B1
    • 2010-09-21
    • US12625506
    • 2009-11-24
    • Chih-Peng WangHuang-Chang ChenSan-Woei Shyu
    • Chih-Peng WangHuang-Chang ChenSan-Woei Shyu
    • G02B26/08
    • G02B26/125G02B13/0005
    • A two-element fθ lens with short focal distance for a laser scanning unit comprises a first lens and a second lens. The first lens has first and second optical surfaces, the second lens has third and fourth optical surfaces, and all the optical surfaces in a main scanning direction on the optical axis are aspherical surfaces. The fourth optical surface has an inflection point in SAG counted from the optical axis to peripheral portion and its paraxial portion is convex that is disposed on the polygon mirror side. The two-element fθ lens satisfies an optical condition of: 0.5429≦tan(β)≦1.2799, wherein β is a maximum effective window angle. The first and second lenses of the two-element fθ lens with short focal distance of the invention effectively reduces the distance from the polygon mirror to an imaging surface to achieve the purpose for reducing the volume of the laser scanning unit.
    • 一个双元素的支架; 用于激光扫描单元的具有短焦距的透镜包括第一透镜和第二透镜。 第一透镜具有第一和第二光学表面,第二透镜具有第三和第四光学表面,并且在光轴上的主扫描方向上的所有光学表面都是非球面。 第四光学面具有从光轴到周边部的SAG的拐点,其近轴部为凸状,配置在多面镜侧。 双元素 透镜满足光学条件:0.5429≦̸ tan(&bgr;)≦̸ 1.2799,其中&bgr; 是最大有效窗口角度。 双元素晶体的第一和第二透镜; 具有本发明的短焦距的透镜有效地减少了从多面镜到成像表面的距离,以实现减少激光扫描单元的体积的目的。