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公开(公告)号：US5594518A
公开(公告)日：1997-01-14
申请号：US470573
申请日：1995-06-07
申请人： Koichi Ohshita
发明人： Koichi Ohshita
摘要： A camera comprises a photographing lens, a finder having its optical axis disposed substantially in parallel with the optical axis of the photographing lens and a lens drive for moving the photographing lens for focusing, the lens drive including a guide member for rectilinearly moving the photographing lens in a direction set at a predetermined angle to the optical axis of the photographing lens.
摘要翻译： 相机包括拍摄镜头，其光轴基本上与摄影镜头的光轴平行设置的取景器和用于移动用于聚焦的拍摄镜头的镜头驱动器，该镜头驱动器包括用于直线移动拍摄镜头的导向件 在与拍摄镜头的光轴成预定角度的方向上。
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公开(公告)号：US5381265A
公开(公告)日：1995-01-10
申请号：US44600
申请日：1993-04-09
申请人： Koichi Ohshita
发明人： Koichi Ohshita
IPC分类号： G02B13/18 , G02B15/16 , G02B15/177 , G02B23/14 , G03B13/10
CPC分类号： G02B15/177 , G02B23/14 , G02B23/145
摘要： A Keplerian zoom finder optical system has an objective lens comprising, in succession from the object side, a first lens unit of negative refractive power, a second lens unit of positive refractive power and a third lens unit of positive refractive power and having positive refractive power as a whole, and an eyepiece of positive refractive power for enlarging and observing the focus image of the objective lens therethrough. The air gap between the first lens unit and the second lens unit is varied to thereby vary finder magnification. The Keplerian zoom finder optical system satisfies a predetermined condition.
摘要翻译： 开普勒缩放取景器光学系统具有物镜，其从物体侧依次包括负屈光力的第一透镜单元，正折光力的第二透镜单元和正折射光焦度的第三透镜单元，具有正的折光力 作为整体，以及用于放大和观察物镜的聚焦图像的正屈光力的目镜。 改变第一透镜单元和第二透镜单元之间的空气间隙，从而改变取景器放大率。 开普勒缩放取景器光学系统满足预定条件。
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公开(公告)号：US5315331A
公开(公告)日：1994-05-24
申请号：US65035
申请日：1993-05-24
申请人： Koichi Ohshita
发明人： Koichi Ohshita
CPC分类号： G02B15/10 , G02B13/06 , G03B17/24 , G03B19/07 , G03B2206/004 , G03B2217/246 , G03B2217/248
摘要： An optical apparatus capable of a panoramic photographing includes a photographing lens, an auxiliary lens having positive refraction to convert its focal length synthesized with the photographing lens to a focal length shorter than the individual focal length of the photographing lens without changing the positions of an image formation, and an auxiliary lens supporting means which removably supports the auxiliary lens in the optical path between the photographing lens and the image-formation plane, and is constructed to perform easily a usual photographing individually with the photographing lens as well as a panoramic photographing with the installation of the auxiliary lens.
摘要翻译： 能够进行全景拍摄的光学装置包括拍摄镜头，具有正折射的辅助镜头，以将其与拍摄镜头合成的焦距转换为短于拍摄镜头的个体焦距的焦距，而不改变图像的位置 以及辅助透镜支撑装置，其可拆卸地将辅助透镜支撑在拍摄镜头和图像形成平面之间的光路中，并且被构造成可以容易地执行与拍摄镜头分开的通常拍摄以及全景拍摄 辅助镜头的安装。
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公开(公告)号：US5900988A
公开(公告)日：1999-05-04
申请号：US944761
申请日：1997-10-06
申请人： Koichi Ohshita
发明人： Koichi Ohshita
CPC分类号： G02B23/14 , G02B15/177
摘要： A viewfinder having a high magnification ratio permits satisfactory correction of aberration in spite of its compact and simple structure. An objective lens group of the viewfinder includes a first lens unit having negative refractive power, a second lens unit having positive refractive power, and a third lens unit having negative refractive power and varies magnification by moving at least the second lens unit. Moreover, the first lens unit includes at least one negative lens, the second lens unit includes at least two positive lenses, and the third lens unit includes at least one negative lens. Furthermore, the positive lens is formed so that an object-side surface is aspherical and a predetermined condition is satisfied.
摘要翻译： 尽管其结构紧凑而简单，但是具有高放大率的取景器能够令人满意地校正像差。 取景器的物镜组包括具有负屈光力的第一透镜单元，具有正折光力的第二透镜单元和具有负折光力的第三透镜单元和至少移动第二透镜单元而变化放大率。 此外，第一透镜单元包括至少一个负透镜，第二透镜单元包括至少两个正透镜，并且第三透镜单元包括至少一个负透镜。 此外，正透镜被形成为使得物体侧表面是非球面并且满足预定条件。
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公开(公告)号：US5765056A
公开(公告)日：1998-06-09
申请号：US733600
申请日：1996-10-18
申请人： Motoyuki Ohtake , Koichi Ohshita
发明人： Motoyuki Ohtake , Koichi Ohshita
摘要： A camera having an apparatus for correcting parallax includes viewfinder optical system for viewing an object. A shooting lens system for photographing the object is disposed such that the optical axis of the shooting lens system is different from the optical axis of the viewfinder optical system. The shooting lens system includes a correcting lens group such that image shift is accomplished by decentering the correcting lens group. A focusing lens group, spaced from the correcting lens group, is moveable along the optical axis of the shooting lens system. Parallax that is created by changes in the position of the object is corrected by accomplishing an image shift by the shooting lens system.
摘要翻译： 具有用于校正视差的装置的相机包括用于观看物体的取景器光学系统。 拍摄物体的拍摄镜头系统被设置为使得拍摄镜头系统的光轴与取景器光学系统的光轴不同。 拍摄镜头系统包括校正透镜组，使得通过使校正透镜组偏心来实现图像偏移。 与校正透镜组间隔开的聚焦透镜组可以沿着拍摄透镜系统的光轴移动。 通过拍摄镜头系统的图像偏移来校正由对象的位置的变化产生的视差。
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公开(公告)号：US5646777A
公开(公告)日：1997-07-08
申请号：US329320
申请日：1994-10-26
申请人： Koichi Ohshita
发明人： Koichi Ohshita
CPC分类号： G02B15/177 , G02B23/14 , G02B23/145
摘要： A Keplerian zoom finder optical system has an objective lens comprising, in succession from the object side, a first lens unit of negative refractive power, a second lens unit of positive refractive power, and a third lens unit of positive refractive power and having positive refractive power as a whole, and an eyepiece of positive refractive power for enlarging and observing the focused image of the objective lens therethrough. The air gap between the first lens unit and the second lens unit is varied to thereby vary finder magnification.
摘要翻译： 开普勒缩放取景器光学系统具有物镜，该物镜从物体侧依次包括负折光力的第一透镜单元，正屈光力的第二透镜单元和具有正折射率的正折射力的第三透镜单元 作为整体的功率，以及用于放大和观察物镜的聚焦图像的正屈光力的目镜。 改变第一透镜单元和第二透镜单元之间的空气间隙，从而改变取景器放大率。
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公开(公告)号：US5640277A
公开(公告)日：1997-06-17
申请号：US364218
申请日：1994-12-27
申请人： Koichi Ohshita
发明人： Koichi Ohshita
CPC分类号： G02B13/02
摘要： The lens system includes, in order from an object side, a 1-st lens unit having a positive refractive power which has at least two positive lens elements and a negative lens element positioned on an image side of said positive lens elements, a 2-nd lens unit having a positive refractive power and a 3-rd lens unit having a positive refractive power. During focusing, both 1-st and 3-rd lens units are fixed, whereas the 2-nd lens unit is movable along an optical axis. The lens system satisfies at least one of the conditions 1.8
摘要翻译： 透镜系统从物体依次包括具有正折光力的第一透镜单元，其具有位于所述正透镜元件的像侧上的至少两个正透镜元件和负透镜元件， 具有正折光力的透镜单元和具有正折光力的3镜头单元。 在聚焦期间，第一和第三镜头单元是固定的，而第二透镜单元可以沿光轴移动。 透镜系统满足条件1.8
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18.发明授权
公开(公告)号：US5612826A
公开(公告)日：1997-03-18
申请号：US496665
申请日：1995-06-29
申请人： Koichi Ohshita
发明人： Koichi Ohshita
CPC分类号： G02B7/022
摘要： A lens holding device and a lens system equipped with the holding device are simple in structure and low in cost. The lens holding device includes a cylindrical lens barrel that is structured as one body with a single plastic lens and has an inside diameter larger than the effective diameter of the plastic lens. A holding ring, made from an impermeable substance, holds at least one lens that has been inserted into the lens barrel and fixes the position of the lens. The holding ring covers the edge surface of the lens barrel.
摘要翻译： 配备有保持装置的透镜保持装置和透镜系统结构简单，成本低。 透镜保持装置包括柱形透镜筒，其被构造为具有单个塑料透镜的一体，并且具有大于塑料透镜的有效直径的内径。 由不渗透物质制成的保持环保持至少一个已插入透镜镜筒中的透镜并固定透镜的位置。 保持环覆盖镜筒的边缘表面。
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公开(公告)号：US5220458A
公开(公告)日：1993-06-15
申请号：US896578
申请日：1992-06-10
申请人： Koichi Ohshita
发明人： Koichi Ohshita
IPC分类号： G02B13/18 , G02B15/16 , G02B15/177 , G02B23/14 , G03B13/06
CPC分类号： G02B15/177 , G02B23/145
摘要： A Keplerian zoom finder system has sequentially from its object side an objective lens with positive refractive power, a field lens with positive refractive power arranged in the vicinity of the focus of the objective lens, and an ocular with positive refractive power for observing the object image by the objective lens in enlargement. In the finder system, the aforesaid objective lens has from its object side the first lens of a biconcave lens with a more enhanced concavity toward the object side and the second lens of a biconvex lens with an aspherical surface on the eye point side. The Keplerian zoom finder system thus structured is characterized in that its finder magnification is varied by varying the air spacing between the aforesaid first lens and second lens and the conditions are satisfied.
摘要翻译： 开普勒缩放取景器系统从物体侧依次具有正屈光力的物镜，布置在物镜焦点附近的具有正折光力的场透镜，以及用于观察物体图像的具有正屈光力的眼睛 由物镜放大。 在取景器系统中，上述物镜的物体侧具有朝向物体侧具有更大增强凹部的双凹透镜的第一透镜和在眼点侧具有非球面的双凸透镜的第二透镜。 如此构造的开普勒缩放取景器系统的特征在于，通过改变上述第一透镜和第二透镜之间的空气间隔来改变其取景器放大倍率，并满足条件。
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公开(公告)号：US5144480A
公开(公告)日：1992-09-01
申请号：US775605
申请日：1991-10-15
申请人： Koichi Ohshita
发明人： Koichi Ohshita
IPC分类号： G02B15/177 , G02B23/14
CPC分类号： G02B15/177 , G02B23/145
摘要： A Keplerian zoom finder optical system includes an objective lens unit comprising a forward group having negative refractive power and a rearward groups having positive refractive power, the objective lens unit having positive refractive power as a whole and having the magnification changing function of changing the finder magnification by the spacing between the forward group and the rearward group being changed, an eyepiece unit having positive refractive power for enlarging and observing therethrough a spatial image formed by the objective lens unit, and an image erecting optical system for erecting an inverted spatial image formed by the objective lens unit. The forward group in the objective lens unit comprises a first lens having negative refractive power and a positive meniscus-shaped second lens having its convex surface facing the object side, and is designed to have negative refractive power as a whole. The rearward group in the objective lens unit comprises a biconvex third lens, a negative meniscus-shaped fourth lens cemented to the third lens and having its concave surface facing the object side, and a positive meniscus-shaped fifth lens having its convex surface facing the image side, and is designed to have positive refractive power as a whole.
摘要翻译： 开普勒缩放取景器光学系统包括物镜单元，该物镜单元包括具有负屈光力的正向组和具有正屈光力的后组，物镜单元整体具有正折射力，并且具有改变取景器放大率的放大率变化功能 通过正向组和后组之间的间隔被改变，具有正折射力的目镜单元用于放大和观察由物镜单元形成的空间图像，以及用于竖立反转空间图像的图像竖立光学系统，用于竖立由 物镜单元。 物镜单元中的前组包括具有负屈光力的第一透镜和具有面向物侧的凸面的正弯月形第二透镜，并且被设计成整体具有负折射力。 物镜单元中的向后组包括双凸透镜第三透镜，胶合到第三透镜的凹弯曲面形状的第四透镜，并且其凹面朝向物体侧;正弯月形第五透镜，其凸表面面向 图像侧，并且被设计为具有整体的正屈光力。
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