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    • 2. 发明授权
    • Zoom optical system
    • 变焦光学系统
    • US06433940B1
    • 2002-08-13
    • US09840453
    • 2001-04-24
    • Masashi HankawaKazuteru KawamuraMasaru Morooka
    • Masashi HankawaKazuteru KawamuraMasaru Morooka
    • G02B1514
    • G02B15/163
    • A zoom optical system comprising, in order from the object side, a first lens unit having positive refractive power, a second lens unit having positive refractive power and a third lens unit having negative refractive power, and configured to change a magnification from a wide position to a tele position by moving the lens units on the object side so as to widen an airspace between the first lens unit and the second lens unit and narrow an airspace between the second lens unit and the third lens unit, thereby having a short total length at the tele position in particular and favorable optical performance.
    • 一种变焦光学系统,其从物体侧依次包括具有正屈光力的第一透镜单元,具有正屈光力的第二透镜单元和具有负屈光力的第三透镜单元,并且被配置为从宽位置改变倍率 通过在物体侧移动透镜单元以扩大第一透镜单元和第二透镜单元之间的空间并使第二透镜单元和第三透镜单元之间的空间变窄,从而具有短的总长度 在远程位置,具有良好的光学性能。
    • 3. 发明授权
    • Image pickup apparatus having wide angle zoom lens system
    • 具有广角变焦透镜系统的摄像装置
    • US07599125B2
    • 2009-10-06
    • US12151450
    • 2008-05-06
    • Masaru MorookaHideyuki NagaokaEiji ShirotaMasahiro Katakura
    • Masaru MorookaHideyuki NagaokaEiji ShirotaMasahiro Katakura
    • G02B15/14
    • G02B15/173G02B5/04G02B27/0025
    • An image pickup apparatus having a wide angle zoom lens system includes a zoom lens system, and an image pickup element which is disposed at an image side of the zoom lens system. The zoom lens system includes in order from an object side thereof, a first lens unit G1 having a positive refracting power, a second lens unit G2 having a negative refracting power, a third lens unit G3 having a positive refracting power, a fourth lens unit G4 having a positive refracting power, and an aperture stop S which is disposed between the second lens unit G2 and the third lens unit G3. A zooming is carried out from a wide angle end to a telephoto end by fixing a position of the first lens unit, and changing a distance between the lens units by moving at least the second lens unit G2 and the third lens unit G3, and the following conditional expressions are satisfied. 33°
    • 具有广角变焦透镜系统的图像拾取装置包括变焦透镜系统和设置在变焦透镜系统的像侧的摄像元件。 变焦透镜系统从物体侧依次包括具有正折射力的第一透镜单元G1,具有负折射光焦度的第二透镜单元G2,具有正折射力的第三透镜单元G3,第四透镜单元 G4具有正折射力,以及孔径光阑S,其设置在第二透镜单元G2和第三透镜单元G3之间。 通过固定第一透镜单元的位置,并且通过至少移动第二透镜单元G2和第三透镜单元G3来改变透镜单元之间的距离,从广角端到望远端进行变焦,并且 满足以下条件表达式。 <?in-line-formula description =“In-line Formulas”end =“lead”?> 33° <?in-line-formula description =”In-line Formulas“end =”lead“?> 3
    • 6. 发明授权
    • Zoom lens, and imaging system incorporating it
    • 变焦镜头,并配有成像系统
    • US07283310B2
    • 2007-10-16
    • US11114039
    • 2005-04-26
    • Kouki HozumiMasaru Morooka
    • Kouki HozumiMasaru Morooka
    • G02B15/14
    • G02B15/173
    • A zoom lens system includes a first group G1 of positive power, a second group G2 of negative power, a third group G3 of positive power and a fourth group G4 of positive power. Upon zooming, at least the first group G1, the second group G2 and the third group G3 move on an optical axis in such a way that, at a telephoto end with respect to a wide-angle end, the space between the first group G1 and the second group G2 and the third group G3 becomes narrow and the space between the third group G3 and the fourth group G4 becomes wide. The zoom lens system satisfies a condition that defines the ratio of the total length (length from the first surface of the lens system to an image plane) to the focal length of the zoom lens system at the wide-angle end.
    • 变焦透镜系统包括正功率的第一组G 1,负功率的第二组G 2,正功率的第三组G 3和正功率的第四组G 4。 在变焦时,至少第一组G 1,第二组G 2和第三组G 3在光轴上移动,使得在相对于广角端的远摄端处, 第一组G 1和第二组G 2和第三组G 3变窄,并且第三组G 3和第四组G 4之间的空间变宽。 变焦透镜系统满足限定了在广角端处的总长度(从透镜系统的第一表面到图像平面的长度)与变焦透镜系统的焦距的比率的条件。
    • 8. 发明申请
    • Zoom lens, and imaging system incorporating it
    • 变焦镜头,并配有成像系统
    • US20050243437A1
    • 2005-11-03
    • US11114039
    • 2005-04-26
    • Kouki HozumiMasaru Morooka
    • Kouki HozumiMasaru Morooka
    • G02B15/14G02B15/173
    • G02B15/173
    • The invention relates to a compact zoom lens system that has a decreased F-number and can easily achieve a high zoom ratio, and an imaging system that incorporates it. The zoom lens system comprises a first group G1 of positive power, a second group G2 of negative power, a third group G3 of positive power and a fourth group G4 of positive power. Upon zooming, at least the first group G1, the second group G2 and the third group G3 move on an optical axis in such a way that, at a telephoto end with respect to a wide-angle end, the space between the first group G1 and the second group G2 becomes wide, the space between the second group G2 and the third group G3 becomes narrow and the space between the third group G3 and the fourth group G4 becomes wide. The second group G2 is composed of a negative lens L21, a negative lens L22 and a positive lens L23. The zoom lens system satisfies a condition that defines the ratio of the total length (length from the first surface of the lens system to an image plane) to the focal length of the zoom lens system at the wide-angle end.
    • 本发明涉及一种具有减小的F数并且可以容易地实现高变焦比的紧凑型变焦透镜系统,以及包含该变焦透镜系统的成像系统。 变焦透镜系统包括正功率的第一组G 1,负功率的第二组G 2,正功率的第三组G 3和正功率的第四组G 4。 在变焦时,至少第一组G 1,第二组G 2和第三组G 3在光轴上移动,使得在相对于广角端的远摄端处, 第一组G 1和第二组G 2变宽,第二组G 2和第三组G 3之间的空间变窄,并且第三组G 3和第四组G 4之间的空间变宽。 第二组G 2由负透镜L 21,负透镜L 22和正透镜L 23组成。 变焦透镜系统满足限定了在广角端处的总长度(从透镜系统的第一表面到图像平面的长度)与变焦透镜系统的焦距的比率的条件。
    • 9. 发明授权
    • Real image type variable magnification viewfinder optical system
    • 实像式可变放大取景器光学系统
    • US5257129A
    • 1993-10-26
    • US823472
    • 1992-01-22
    • Masaru MorookaShinichi Yoshii
    • Masaru MorookaShinichi Yoshii
    • G02B15/16G02B23/14G02B15/14G02B9/34G02B23/00
    • G02B15/16G02B23/14G02B23/145
    • A real image type variable magnification viewfinder optical system comprising, in order from the object side, an objective lens system having positive refractive power and an eyepiece lens system having positive refractive power. The objective lens system comprises, in order from the object side, a first lens unit having negative refractive power, a second lens unit having positive refractive power, a third lens unit having positive refractive power and a fourth lens unit having positive refractive power. The second lens unit and the third lens unit are moved, with the first lens unit kept fixed, for performing variation of magnification and adjustment of diopter. This viewfinder optical system can have a high magnification and a large field angle of emergence at a low magnification position thereof, a variable magnification ratio of 2 or higher and favorably corrected aberrations, and be manufactured at a low cost.
    • 一种实像变倍倍率取景器光学系统,其从物体侧依次包括具有正屈光力的物镜系统和具有正屈光力的目镜透镜系统。 物镜系统从物体依次包括具有负屈光力的第一透镜单元,具有正屈光力的第二透镜单元,具有正屈光力的第三透镜单元和具有正屈光力的第四透镜单元。 移动第二透镜单元和第三透镜单元,其中第一透镜单元保持固定,用于执行放大率的变化和屈光度的调节。 该取景器光学系统可以在低倍率位置具有高放大率和大的场角出现,2倍以上的可变放大率和有利的校正像差,并以低成本制造。
    • 10. 发明授权
    • Zoom optical system and electronic imaging apparatus having the same
    • 变焦光学系统和具有该光学系统的电子成像设备
    • US08159565B2
    • 2012-04-17
    • US12284955
    • 2008-09-25
    • Masashi HankawaEiji ShirotaMasaru Morooka
    • Masashi HankawaEiji ShirotaMasaru Morooka
    • H04N5/262G02B15/14
    • G02B15/173
    • An electronic imaging apparatus includes a zoom optical system having, in order from the object side, a first lens unit with positive power, a second lens unit with negative power, and an aperture stop, in which the first lens unit is composed of a single positive power unit and the second lens unit has a single negative lens element located at the most object-side position, both surfaces of which are concave, and a positive lens component located at the most image-side position; an electronic image sensor located on the image side of the zoom optical system; and an image processing section electrically processing image data obtained by the electronic image sensor to change the form thereof.
    • 一种电子成像装置,包括:变焦光学系统,其具有从物体侧起的具有正光焦度的第一透镜单元,具有负光焦度的第二透镜单元和孔径光阑,其中,第一透镜单元由单个 正电源单元和第二透镜单元具有位于最外侧位置的最靠近物体侧位置的单个负透镜元件,其两个表面均为凹形,并且位于最图像侧位置的正透镜元件; 位于变焦光学系统的像侧的电子图像传感器; 以及电子处理由电子图像传感器获得的图像数据以改变其形式的图像处理部分。