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公开(公告)号：US20100053774A1
公开(公告)日：2010-03-04
申请号：US12544633
申请日：2009-08-20
申请人： Tomoyuki BABA , Chikara Yamamoto , Kenzo Sado
发明人： Tomoyuki BABA , Chikara Yamamoto , Kenzo Sado
摘要： A small projection lens includes a first lens, which is a biconvex lens, an aperture, an aperture diaphragm (or an aperture), a second lens, which is a negative meniscus lens having a concave surface facing a magnification side, a third lens, which is a positive meniscus lens having a convex surface facing a reduction side, and a fourth lens, which is a biconvex lens having aspheric surfaces at both sides on an optical axis, arranged in this order from the magnification side.A minimum portion of the length of all lens elements of the small projection lens in a diametric direction vertical to the optical axis is equal to or less than 15 mm, and the small projection lens satisfies the following conditional expression: 2.5
摘要翻译： 小投影透镜包括作为双凸透镜的第一透镜，孔，孔径光阑（或孔），具有面向放大侧的凹面的负弯月形透镜的第二透镜，第三透镜， 其是具有面向减压侧的凸面的正弯月形透镜，以及具有从放大侧依次配置的具有在光轴两侧具有非球面的双凸透镜的第四透镜。 小投影透镜的垂直于光轴的直径方向的所有透镜元件的长度的最小部分等于或小于15mm，小投影透镜满足以下条件表达式：2.5 <＆bgr / S <10.0（其中S表示放大倍率图像的最大长度（英寸），＆amp; bgr表示放大倍数）。
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公开(公告)号：US20110286087A1
公开(公告)日：2011-11-24
申请号：US13195656
申请日：2011-08-01
申请人： Tomoyuki BABA
发明人： Tomoyuki BABA
IPC分类号： G02B17/08
摘要： A luminous flux optically modulated by an image display device is projected to be magnified on a screen by a projection optical system includes: a first optical system having a positive first lens group including eight lenses, a negative second lens group including three lenses, and a third lens group including an aspheric single lens; and a second optical system including an aspheric reflecting mirror. The projection optical system is an off-axial optical system, and forms the intermediate image between the first optical system and the second optical system. Moreover, the expressions T1/Y
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公开(公告)号：US20090257117A1
公开(公告)日：2009-10-15
申请号：US12420600
申请日：2009-04-08
申请人： Tomoyuki BABA
发明人： Tomoyuki BABA
IPC分类号： G02B17/08
摘要： A luminous flux optically modulated by an image display device is projected to be magnified on a screen by a projection optical system includes: a first optical system having a positive first lens group including eight lenses, a negative second lens group including three lenses, and a third lens group including an aspheric single lens; and a second optical system including an aspheric reflecting mirror. The projection optical system is an off-axial optical system, and forms the intermediate image between the first optical system and the second optical system. Moreover, the expressions T1/Y
摘要翻译： 由图像显示装置光调制的光束被投影以通过投影光学系统在屏幕上放大，包括：具有包括八个透镜的正的第一透镜组的第一光学系统，包括三个透镜的负的第二透镜组，以及 第三透镜组包括非球面单透镜; 以及包括非球面反射镜的第二光学系统。 投影光学系统是离轴光学系统，并且在第一光学系统和第二光学系统之间形成中间图像。 此外，在T1是第一光学系统的总长度，Y是图像显示装置的最大光线高度时，满足表达式T1 / Y <12.5和T12 / f1 <6.0，T12是第一光学系统 系统和第二光学系统，f1是第一光学系统的焦距。
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公开(公告)号：US20090141364A1
公开(公告)日：2009-06-04
申请号：US12327516
申请日：2008-12-03
申请人： Tomoyuki BABA
发明人： Tomoyuki BABA
CPC分类号： G02B23/2407 , A61B1/00096 , A61B1/00188 , A61B1/041 , G02B13/00
摘要： A capsule endoscope has an imaging lens system 45a that forms an image of a substantially spherical object 40 in a plane shape on the imaging surface. The imaging lens system 45a includes first to fourth lenses L1 to L4 and an aperture diaphragm S7. The surface shapes and arrangement thereof are set in consideration of a front cover 41 of the capsule endoscope and a cover glass 56 of an imaging device. Further, the imaging lens system is configured so that the following conditional expression is satisfied with respect to an arbitrary half angle of view ω: 0.7
摘要翻译： 胶囊型内窥镜具有成像透镜系统45a，其在成像面上形成平面形状的大致球状的物体40的图像。 成像透镜系统45a包括第一至第四透镜L1至L4和孔径光阑S7。 考虑到胶囊型内窥镜的前盖41和成像装置的盖玻璃56来设定其表面形状和布置。 此外，成像透镜系统被配置为使得相对于任意的半角视角ω：满足以下条件表达式：<？in-line-formula description =“In-line Formulas”end =“lead”>> 0.7 <（Y（ω+ Deltaomega）-Y（ω））/ Y（Deltaomega）<？在线公式描述=“内联公式”end =“tail”？>其中Y（ω）表示图像高度 对于成像透镜系统的半视角Ω，Deltaomega表示半视角（ω）的微小变化量。
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