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    • 46. 发明申请
    • LENS SYSTEM AND IMAGE PICKUP DEVICE EQUIPPED WITH THE SAME
    • 镜头系统和图像拾取装置配备相同
    • US20120229913A1
    • 2012-09-13
    • US13416602
    • 2012-03-09
    • Kento Hara
    • Kento Hara
    • G02B15/14
    • G02B15/173G02B9/36G02B9/60G02B9/62G02B9/64G02B15/14
    • A lens system, from an object side to an image side in the following order, at least includes: a fixed object-side lens group that is disposed closest to the object side; a first focusing lens group that moves during a focusing operation and includes a plurality of lenses; a second focusing lens group that moves during a focusing operation and includes a plurality of lenses; a wobbling lens group that has a smaller thickness on an optical axis than the thickness on the optical axis of the first focusing lens group and the thickness on the optical axis of the second focusing lens group, and vibrates in an optical-axis direction; and a fixed image-side lens group that is disposed closest to the image side.
    • 透镜系统按照以下顺序从物体侧到像侧至少包括:最靠近物体侧设置的固定物体侧透镜组; 在聚焦操作期间移动并包括多个透镜的第一聚焦透镜组; 第二聚焦透镜组,其在聚焦操作期间移动并且包括多个透镜; 具有比光轴上的厚度小于第一聚焦透镜组的光轴上的厚度和第二聚焦透镜组的光轴上的厚度的摆动透镜组,并且在光轴方向上振动; 以及设置成最靠近图像侧的固定的图像侧透镜组。
    • 47. 发明申请
    • OPTICAL LENS SYSTEM FOR TAKING IMAGE
    • 用于拍摄图像的光学透镜系统
    • US20110194196A1
    • 2011-08-11
    • US13091070
    • 2011-04-20
    • Chun-Shan CHENTsung-Han TSAI
    • Chun-Shan CHENTsung-Han TSAI
    • G02B9/34
    • G02B9/36G02B13/0035G02B13/004G02B13/006
    • An optical lens system for taking image comprises, in order from the object side to the image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave image-side surface and an object-side surface cemented to an image-side surface of the first lens element; a third lens element with negative refractive power; a fourth lens element with positive refractive power having a concave image-side surface and at least one inflection point; and an aperture stop located between an object to be photographed and the third lens element. In the optical lens system for taking image, the number of the lens elements with refractive power being limited to four. A focal length of the optical lens system for taking image is f, a focal length of the first lens element is f1, they satisfy the relation: 0.8
    • 用于拍摄图像的光学透镜系统包括从物体侧到图像侧的顺序:具有凸起物体侧表面的具有正折光力的第一透镜元件; 具有凹面像侧面的负折射力的第二透镜元件和胶合到第一透镜元件的像侧表面的物体侧表面; 具有负屈光力的第三透镜元件; 具有正折射力的第四透镜元件,具有凹面图像侧表面和至少一个拐点; 以及位于待拍摄物体和第三透镜元件之间的孔径光阑。 在用于拍摄图像的光学透镜系统中,具有折射力的透镜元件的数量被限制为四个。 用于拍摄图像的光学透镜系统的焦距为f,第一透镜元件的焦距为f1,满足关系:0.8
    • 48. 发明申请
    • Original reading lens, original reading lens unit, original reading device, and image forming device
    • 原始阅读镜头,原装阅读镜头单元,原装阅读装置及图像形成装置
    • US20050141103A1
    • 2005-06-30
    • US10971160
    • 2004-10-25
    • Kiichiro Nishina
    • Kiichiro Nishina
    • G02B13/24G02B9/36G02B9/60G02B13/16G02B13/18H04N1/028G02B3/02
    • G02B9/60G02B9/36G02B13/16
    • An original reading lens includes a four-group, five-element lens configuration including three positive lenses and two negative lenses, wherein the positive lens is constructed by a glass material of low dispersion, and the negative lens is constructed by a glass material of high dispersion, a partial dispersion θ gd is defined by θ gd=(ng−nd)/(nF−nc) by a refractive index nd of d line (587.56 nm), a refractive index nc of c line (656.27 nm), a refractive index nF of F line (486.13 nm), and a refractive index ng of g line (435.83 nm), a straight line connecting a coordinate point of a reference glass material K7, K7 (θ gd, ν d) and a coordinate point of a reference glass material F2, F2 (θ gd, ν d) on a plane with a coordinate system including the partial dispersion θ gd and an Abbe number ν d as orthogonal two axes is adopted as a reference line, and a partial dispersion deviation δ θ gd which is the deviation from the reference line of the partial dispersion θ gd of the material is positive in one or more positive lens.
    • 原始读取镜头包括四组五元件透镜配置,包括三个正透镜和两个负透镜,其中正透镜由低色散的玻璃材料构成,负透镜由高玻璃材料构成 分散,部分色散θgd由d线(587.56nm)的折射率nd,c线的折射率nc(656.27nm),θgd =(ng-nd)/(nF-nc) F线(486.13nm)的折射率nF和g线(435.83nm)的折射率ng,连接参考玻璃材料K 7,K 7(θgd,nu d)的坐标点和 采用坐标系的参考玻璃材料F 2,F 2(θgd,nu d)在具有包括部分色散theta gd和阿贝数nu d作为正交两轴的坐标系的坐标点作为参考线,并且 偏离偏离参考线的部分色散偏差delta theta gd 在一个或多个正透镜中,材料的色散theta gd为正。
    • 50. 发明授权
    • Gaussian lens
    • 高斯镜头
    • US4671627A
    • 1987-06-09
    • US785524
    • 1985-10-08
    • Hiroichi Shinohara
    • Hiroichi Shinohara
    • G02B9/34G02B9/36G02B13/00G02B13/24G02B11/26
    • G02B9/36G02B13/24
    • A high resolving power Gaussian lens used for a facsimile or the like which uses high-density solid image forming elements. To achieve this object, it is necessary to maintain a high resolving power to cover the marginal portion of the image plane. In the Gaussian lens comprising four groups of lenses and being symmetrical to a diaphragm, each lens group comprises a cemented lens composed of a positive meniscus lens with a concave surface directed toward the diaphragm and a negative meniscus lens. The positive lens has a refractive index in excess of 1.74 to flatten an image surface. The second lens group and the third lens group are reduced in thickness to make it possible to have a wider angle.
    • 用于使用高密度实心图像形成元件的传真机等的高分辨率高斯透镜。 为了实现该目的,需要保持高分辨率以覆盖图像平面的边缘部分。 在包括四组透镜并且与光阑对称的高斯透镜中,每个透镜组包括由具有朝向光阑的凹面的负弯月形透镜和负弯月形透镜构成的胶合透镜。 正透镜的折射率超过1.74以使图像平坦化。 第二透镜组和第三透镜组的厚度减小,使得可以具有更宽的角度。