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    • 3. 发明授权
    • Zoom lens, imaging apparatus, and method for manufacturing zoom lens
    • 变焦镜头,成像设备和制造变焦镜头的方法
    • US08830592B2
    • 2014-09-09
    • US13166631
    • 2011-06-22
    • Haruo SatoIssei Tanaka
    • Haruo SatoIssei Tanaka
    • G02B15/00
    • G02B13/04G02B1/11G02B15/177G02B27/0018G02B27/646G03B19/20
    • A zoom lens including, from an object: a front group having negative power; and a rear group having positive power, the rear group including, from the object, a positive lens, a negative lens having a concave surface facing the object, a cemented positive lens constructed by a negative lens and a positive lens, and a cemented lens constructed by a positive lens and a negative lens, the rear group further including a focusing group disposed to the object side of the positive lens La for focusing from infinity to a close object by moving from the object side to an image side, a distance between the front group and the rear group being varied thereby zooming from a wide-angle end state to a telephoto end state, and given condition being satisfied, thereby providing a downsized zoom lens having wide angle of view and excellent optical performance with fewer lenses.
    • 一种变焦透镜,包括:物体:具有负电力的前组; 和具有正功率的后组,所述后组从所述物体包括正透镜,具有面向所述物体的凹面的负透镜,由负透镜和正透镜构成的胶合正透镜,以及胶合透镜 由正透镜和负透镜构成,后组还包括设置在正透镜La的物体侧的聚焦组,用于通过从物体侧向像侧移动而从无穷远到近距离物体的聚焦, 前组和后组变化,从广角端状态变焦到望远端状态,并且满足条件,从而提供具有广视角的缩小变焦透镜和具有较少透镜的优异光学性能。
    • 7. 发明申请
    • ZOOM LENS SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING ZOOM LENS SYSTEM
    • 变焦镜头系统,光学设备和制造变焦镜头系统的方法
    • US20110273776A1
    • 2011-11-10
    • US13042493
    • 2011-03-08
    • Akihiko OBAMANorikazu YokoiIssei Tanaka
    • Akihiko OBAMANorikazu YokoiIssei Tanaka
    • G02B15/14B05D5/06G02B1/11
    • G02B15/16G02B15/14G02B15/173Y10T29/49826
    • Including, in order from an object side: a first lens group G1 having positive power; a second lens group G2 having negative power; a third lens group G3 having positive power; a fourth lens group G4 having negative power; and a fifth group G5 having positive power, an aperture stop being disposed to an image side of the second lens group, upon zooming from a wide-angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2 increasing, a distance between the second lens group G2 and the third lens group G3 decreasing, a distance between the third lens group G3 and the fourth lens group G4 varying, and a distance between the fourth lens group G4 and the fifth lens group G5 varying, and given conditionals being satisfied, thereby providing a zoom lens system having high optical performance with suppressing variation in aberrations, an optical apparatus equipped therewith, and a method for manufacturing the zoom lens system.
    • 从物体侧依次包括具有正电力的第一透镜组G1; 具有负功率的第二透镜组G2; 具有正功率的第三透镜组G3; 具有负功率的第四透镜组G4; 以及具有正功率的第五组G5,在从广角端状态变焦到望远端状态时,将孔径光阑设置在第二透镜组的像侧,第一透镜组G1和第二透镜组G1之间的距离 透镜组G2增加,第二透镜组G2和第三透镜组G3之间的距离减小,第三透镜​​组G3和第四透镜组G4之间的距离变化,以及第四透镜组G4和第五透镜之间的距离 组G5变化,并且给定条件满足,从而提供具有抑制像差变化的高光学性能的变焦透镜系统,配备有其的光学装置,以及用于制造变焦透镜系统的方法。
    • 8. 发明申请
    • Diffractive optical element and fabrication method thereof
    • 衍射光学元件及其制造方法
    • US20050219698A1
    • 2005-10-06
    • US11091412
    • 2005-03-29
    • Issei Tanaka
    • Issei Tanaka
    • G02B5/18G02B27/42G02B27/44G02B27/00
    • G02B5/1852Y10S359/90
    • A diffractive optical element 1 comprises a first element 10 and a second element 20, whose materials are different from each other. These elements are bonded to each other, with a diffraction grating 30 created on the boundary surface between the first element 10 and the second element 20, and in the diffractive optical element 1, at least the second element 20 is made from a photo-setting resin, which is set by light rays incident through the first element 10. The diffractive optical element 1 is set in a predetermined range of values including values that make the transmittance T1 of the first element 10 and the transmittance T2 of the second element 20 equal to each other for the light rays. As a result, as differences in cure shrinkage in the second element 20 are generated by differences in the intensity of the light rays caused from ups and downs of the diffraction grating 30 created on the surface of the first element 10, the differences in cure shrinkage are controlled within a range so as not to degrade the desired performance of the diffractive optical element 1.
    • 衍射光学元件1包括其材料彼此不同的第一元件10和第二元件20。 这些元件彼此结合,在第一元件10和第二元件20之间的边界表面上形成衍射光栅30,并且在衍射光学元件1中,至少第二元件20由光固化 树脂,其由通过第一元件10入射的光线设定。 衍射光学元件1被设定在包括使第一元件10的透射率T 1和第二元件20的透射率T 2相对于光线的值的值的预定范围内。 结果,由于第二元件20中的固化收缩率的差异是由在第一元件10的表面上产生的衍射光栅30的上下颠簸引起的光线强度的差异产生的,所以固化收缩率的差异 被控制在不会降低衍射光学元件1的期望性能的范围内。
    • 10. 发明申请
    • ZOOM LENS, IMAGING APPARATUS, AND METHOD FOR MANUFACTURING ZOOM LENS
    • 变焦镜头,成像装置和制造变焦镜头的方法
    • US20110317278A1
    • 2011-12-29
    • US13166631
    • 2011-06-22
    • Haruo SATOIssei Tanaka
    • Haruo SATOIssei Tanaka
    • G02B15/14
    • G02B13/04G02B1/11G02B15/177G02B27/0018G02B27/646G03B19/20
    • A zoom lens including, from an object: a front group having negative power; and a rear group having positive power, the rear group including, from the object, a positive lens, a negative lens having a concave surface facing the object, a cemented positive lens constructed by a negative lens and a positive lens, and a cemented lens constructed by a positive lens and a negative lens, the rear group further including a focusing group disposed to the object side of the positive lens La for focusing from infinity to a close object by moving from the object side to an image side, a distance between the front group and the rear group being varied thereby zooming from a wide-angle end state to a telephoto end state, and given condition being satisfied, thereby providing a downsized zoom lens having wide angle of view and excellent optical performance with fewer lenses.
    • 一种变焦透镜,包括:物体:具有负电力的前组; 和具有正功率的后组,所述后组从所述物体包括正透镜,具有面向所述物体的凹面的负透镜,由负透镜和正透镜构成的胶合正透镜,以及胶合透镜 由正透镜和负透镜构成,后组还包括设置在正透镜La的物体侧的聚焦组,用于通过从物体侧向像侧移动而从无穷远到近距离物体的聚焦, 前组和后组变化,从广角端状态变焦到望远端状态,并且满足条件,从而提供具有广视角的缩小变焦透镜和具有较少透镜的优异光学性能。