公开(公告)号：US5406543A

公开(公告)日：1995-04-11

申请号：US224009

申请日：1994-04-06

申请人： Shohei Kobayashi ,  Takeshi Yamazaki ,  Masato Miyata

发明人： Shohei Kobayashi ,  Takeshi Yamazaki ,  Masato Miyata

IPC分类号： G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  H01L25/16 ,  H01L31/16 ,  H01L33/00 ,  G11B7/00

CPC分类号： H01L31/16 ,  G11B7/123 ,  G11B7/127 ,  G11B7/131 ,  G11B7/1353

摘要： An optical head for writing and/or reading information on and/or from an optical record medium such as a magneto-optical record medium including a semiconductor substrate, a semiconductor laser mounted on a surface of the semiconductor substrate for emitting a laser beam, an objective lens for projecting the laser beam onto the optical record medium as a fine spot, a plurality of photodetectors firmed in the surface of the semiconductor substrate, and an optical block arranged on said semiconductor substrate to form an integral unit together with said semiconductor substrate. The optical block includes a hologram for diffracting a return beam reflected by said magneto-optical record medium and a polarization beam splitting plane arranged in substantially parallel with an optical axis of a zero order beam emanating from the hologram for splitting a pupil of the hologram. The return beams diffracted by the hologram and split by the polarization beam splitting plane are separately received by the plurality of photodetectors. By processing outputs of the photodetectors, information signal, focusing error signal and tracking error signal can be derived in a reliable and stable manner, while the optical head can be simple in construction, small in size and cheap in cost.

摘要翻译： 一种用于在光学记录介质上写入和/或读取信息的光学头，例如包括半导体衬底的磁光记录介质，安装在用于发射激光束的半导体衬底的表面上的半导体激光器， 用于将激光束投射到光学记录介质上的物镜作为细微点，在半导体衬底的表面中确认的多个光电检测器和布置在所述半导体衬底上以与所述半导体衬底一起形成整体单元的光学块。 光学块包括用于衍射由所述磁光记录介质反射的返回光束的全息图和与从全息图发射的零级光束的光轴基本平行布置的偏振光束分离平面，用于分离全息图的光瞳。 由全息图衍射并由偏振光束分离平面分离的返回光束由多个光电检测器分别接收。 通过处理光电检测器的输出，可以以可靠和稳定的方式导出信息信号，聚焦误差信号和跟踪误差信号，而光头的结构简单，尺寸小，成本便宜。

公开(公告)号：US20070279759A1

公开(公告)日：2007-12-06

申请号：US11810362

申请日：2007-06-04

申请人： Kouki Hozumi ,  Masato Miyata ,  Tomoyuki Satori

发明人： Kouki Hozumi ,  Masato Miyata ,  Tomoyuki Satori

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： The invention relates to a zoom lens favorable for offering a tradeoff between slimming down a lens system upon received in an associated lens mount and making sure a small F-number. There is a zoom lens provided, which comprises, in order from its object side, a first lens group G1 having negative refracting power, a second lens group G2 having positive refracting power, and a third lens group G3 having positive refracting power. Upon zooming from a wide-angle end to a telephoto end, the first second and third lens groups G1, G2 and G3 each move along an optical axis while a spacing between the first lens group and the second lens group becomes narrow and a spacing between the second lens group and the third lens group becomes wide. The first lens group G1 comprises one single lens that is a double-concave negative lens or two lenses: a double-concave negative lens and a positive lens. The second lens group G2 comprises two positive lenses and one negative lens. At least one of the positive lenses has an aspheric lens surface. The zoom lens satisfies condition (1) that defines the relation between the total length of the lens system and the height of a marginal ray at the entrance surface in the first lens group G1.

摘要翻译： 本发明涉及一种变焦镜头，其有利于在相关联的镜头安装座中收到镜片系统之后，减少镜片系统，并确保小的F数量。 提供了一种变焦透镜，其从物体侧依次包括具有负折射力的第一透镜组G 1，具有正折射率的第二透镜组G 2和具有正折射力的第三透镜组G 3 。 当从广角端变焦到长焦端时，第一和第三透镜组G 1，G 2和G 3各自沿着光轴移动，而第一透镜组和第二透镜组之间的间隔变窄， 第二透镜组和第三透镜组之间的间隔变宽。 第一透镜组G 1包括作为双凹负透镜的一个单透镜或两个透镜：双凹负透镜和正透镜。 第二透镜组G 2包括两个正透镜和一个负透镜。 至少一个正透镜具有非球面透镜表面。 变焦透镜满足限定透镜系统的总长度与第一透镜组G 1的入射面的边缘光线的高度的关系的条件（1）。

公开(公告)号：US08643764B2

公开(公告)日：2014-02-04

申请号：US13333647

申请日：2011-12-21

申请人： Masato Miyata ,  Naoki Fujii

发明人： Masato Miyata ,  Naoki Fujii

IPC分类号： G02B13/16 ,  G02B15/14

CPC分类号： G02B13/18 ,  G02B15/173

摘要： An image pickup apparatus includes a zoom lens having a first positive lens unit, and a first negative lens unit disposed on an object side of the first positive lens unit. A distance between the first positive lens unit and the first negative lens unit is narrowed at the time of zooming from a wide angle end to a telephoto end. The zoom lens includes an aperture stop disposed between a lens nearest to an image side in the first negative lens unit and a lens nearest to the image side in the first positive lens unit, and a light-amount reducing filter made of a resin material which is disposed on the image side of the lens nearest to the image side in the first positive lens unit, and which can be inserted in an optical path and withdrawn from the optical path. The zoom lens satisfies predetermined conditional expressions.

摘要翻译： 图像拾取装置包括具有第一正透镜单元的变焦透镜和设置在第一正透镜单元的物体侧的第一负透镜单元。 在从广角端到远摄端的变焦时，第一正透镜单元与第一负透镜单元之间的距离变窄。 变焦透镜包括设置在最靠近第一负透镜单元中的像侧的透镜和最靠近第一正透镜单元中的像侧的透镜之间的孔径光阑，以及由树脂材料制成的光量减少过滤器 设置在最靠近第一正透镜单元中的图像侧的透镜的像侧上，并且可以插入到光路中并从光路中取出。 变焦镜头满足预定条件表达式。

公开(公告)号：US07965451B2

公开(公告)日：2011-06-21

申请号：US12316296

申请日：2008-12-10

申请人： Keisuke Ichikawa ,  Masahito Ohashi ,  Masato Miyata

发明人： Keisuke Ichikawa ,  Masahito Ohashi ,  Masato Miyata

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： A zoom lens includes, in order from the object side, a first lens unit with negative power, a second lens unit with positive power, a third lens unit with positive power, and a fourth lens unit. When the magnification of the zoom lens is changed in the range from a wide-angle position to a telephoto position, spacing between the first lens unit and the second lens unit is narrowed and spacing between the second lens unit and the third lens unit is widened. An aperture stop moved integrally with the second lens unit is interposed between the most image-side lens element of the first lens unit and the most image-side lens element of the second lens unit. The first lens unit has, in order from the object side, a negative lens element and a positive lens element and satisfies the following conditions: 0.15

摘要翻译： 变焦透镜从物体依次包括具有负电力的第一透镜单元，具有正光焦度的第二透镜单元，具有正光焦度的第三透镜单元和第四透镜单元。 当变焦镜头的倍率在广角位置到远摄位置的范围内变化时，第一透镜单元与第二透镜单元之间的间隔变窄，并且第二透镜单元与第三透镜单元之间的间隔变宽 。 与第二透镜单元整体移动的孔径光阑插入在第一透镜单元的最大像侧透镜元件和第二透镜单元的最大像侧透镜元件之间。 第一透镜单元从物体侧起依次具有负透镜元件和正透镜元件，并且满足以下条件：0.15 <＆phgr; 1MF /＆phgr; 1MR <1.0 -3.0 <1 ph / 1 ph < -1.0其中＆phgr; 1MF是负透镜元件的物体侧表面的光焦度，1MR是负透镜元件的像侧表面的光焦度，1PF是物镜侧的光焦度 正透镜元件的表面，＆phgr; 1PR是正透镜元件的图像侧表面的光焦度。

公开(公告)号：US20110080649A1

公开(公告)日：2011-04-07

申请号：US12807935

申请日：2010-09-17

申请人： Nobumasa Kanbayashi ,  Masato Miyata

发明人： Nobumasa Kanbayashi ,  Masato Miyata

IPC分类号： G02B15/14

CPC分类号： G02B15/177 ,  G02B13/18

摘要： A zoom lens includes a negative first lens unit G1 and a positive second lens unit G2. The second lens unit G2 includes first and second cemented lens components that are arranged adjacent to each other. The first and second cemented lens components are each made up of a plurality of lens elements having different refractive indices and different Abbe constants. The image side surface of the first cemented lens component and the object side surface of the second cemented lens component are both concave surfaces.

摘要翻译： 变焦透镜包括负第一透镜单元G1和正第二透镜单元G2。 第二透镜单元G2包括彼此相邻布置的第一和第二粘合透镜部件。 第一和第二胶合透镜组件各自由具有不同折射率和不同阿贝常数的多个透镜元件组成。 第一胶合透镜部件的像侧表面和第二胶合透镜部件的物体侧表面都是凹面。

公开(公告)号：US20100238564A1

公开(公告)日：2010-09-23

申请号：US12661173

申请日：2010-03-11

申请人： Yuki Kubota ,  Masato Miyata ,  Nobumasa Kanbayashi

发明人： Yuki Kubota ,  Masato Miyata ,  Nobumasa Kanbayashi

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens system includes in order from an object side to an image side, 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, and a fourth lens unit G4 having a positive refracting power. At the time of zooming from a wide angle end to a telephoto end, distances between the lens units change. The third lens unit includes a first cemented lens component having a concave image-side surface on the image side, and a second cemented lens component having a concave object-side surface on the object side, which is disposed immediately after the image side of the first cemented lens component. The first cemented lens component includes a positive lens, and a negative lens having a concave image-side surface which is disposed on the image side of the positive lens. The second cemented lens component includes a negative lens having a concave object-side surface on the object side, and a positive lens which is disposed on the image side of the negative lens.

摘要翻译： 变焦透镜系统包括从物体侧到像侧的顺序，具有正折射率的第一透镜单元G1，具有负折射力的第二透镜单元G2，具有正折射率的第三透镜单元G3，以及 具有正折射率的第四透镜单元G4。 在从广角端到长焦端的变焦时，透镜单元之间的距离发生变化。 第三透镜单元包括在图像侧具有凹面像侧表面的第一胶合透镜部件和在物体侧具有凹面物侧表面的第二胶合透镜部件，其紧邻在 第一胶合透镜组件。 第一胶合透镜部件包括正透镜和设置在正透镜的像侧上的具有凹面像侧面的负透镜。 第二胶合透镜部件包括在物体侧具有凹形物体侧表面的负透镜，以及设置在负透镜的像侧的正透镜。

公开(公告)号：US20090153979A1

公开(公告)日：2009-06-18

申请号：US12316296

申请日：2008-12-10

申请人： Keisuke Ichikawa ,  Masahito Ohashi ,  Masato Miyata

发明人： Keisuke Ichikawa ,  Masahito Ohashi ,  Masato Miyata

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： A zoom lens includes, in order from the object side, a first lens unit with negative power, a second lens unit with positive power, a third lens unit with positive power, and a fourth lens unit. When the magnification of the zoom lens is changed in the range from a wide-angle position to a telephoto position, spacing between the first lens unit and the second lens unit is narrowed and spacing between the second lens unit and the third lens unit is widened. An aperture stop moved integrally with the second lens unit is interposed between the most image-side lens element of the first lens unit and the most image-side lens element of the second lens unit. The first lens unit has, in order from the object side, a negative lens element and a positive lens element and satisfies the following conditions: 0.15

摘要翻译： 变焦透镜从物体依次包括具有负电力的第一透镜单元，具有正光焦度的第二透镜单元，具有正光焦度的第三透镜单元和第四透镜单元。 当变焦镜头的倍率在广角位置到远摄位置的范围内变化时，第一透镜单元与第二透镜单元之间的间隔变窄，并且第二透镜单元与第三透镜单元之间的间隔变宽 。 与第二透镜单元整体移动的孔径光阑插入在第一透镜单元的最大像侧透镜元件和第二透镜单元的最大像侧透镜元件之间。 第一透镜单元从物体侧起依次具有负透镜元件和正透镜元件，并且满足以下条件：<？in-line-formula description =“In-line Formulas”end =“lead”？> 0.15 <？in-line-formula description =“In-line Formulas”end =“lead”？ > -3.0 其中phiIMF是负透镜元件的物体侧表面的光焦度，phiIMR 是负透镜元件的图像侧表面的光焦度，phiIPF是正透镜元件的物体侧表面的光焦度，并且phiIPR是正透镜元件的像侧表面的光焦度。

公开(公告)号：US07474472B2

公开(公告)日：2009-01-06

申请号：US11810362

申请日：2007-06-04

申请人： Kouki Hozumi ,  Masato Miyata ,  Tomoyuki Satori

发明人： Kouki Hozumi ,  Masato Miyata ,  Tomoyuki Satori

IPC分类号： G02B15/14

CPC分类号： G02B15/177

摘要： The invention relates to a zoom lens favorable for offering a tradeoff between slimming down a lens system upon received in an associated lens mount and making sure a small F-number. There is a zoom lens provided, which comprises, in order from its object side, a first lens group G1 having negative refracting power, a second lens group G2 having positive refracting power, and a third lens group G3 having positive refracting power. Upon zooming from a wide-angle end to a telephoto end, the first second and third lens groups G1, G2 and G3 each move along an optical axis while a spacing between the first lens group and the second lens group becomes narrow and a spacing between the second lens group and the third lens group becomes wide. The first lens group G1 comprises one single lens that is a double-concave negative lens or two lenses: a double-concave negative lens and a positive lens. The second lens group G2 comprises two positive lenses and one negative lens. At least one of the positive lenses has an aspheric lens surface. The zoom lens satisfies condition (1) that defines the relation between the total length of the lens system and the height of a marginal ray at the entrance surface in the first lens group G1.

摘要翻译： 本发明涉及一种变焦镜头，其有利于在相关联的镜头安装座中收到镜片系统之后，减少镜片系统，并确保小的F数量。 设有变焦透镜，其从物体侧依次包括具有负折射力的第一透镜组G1，具有正折射率的第二透镜组G2和具有正折射光焦度的第三透镜组G3。 当从广角端变焦到长焦端时，第一和第三透镜组G1，G2和G3各自沿着光轴移动，而第一透镜组和第二透镜组之间的间隔变窄， 第二透镜组和第三透镜组变宽。 第一透镜组G1包括一个单透镜，其是双凹负透镜或两个透镜：双凹负透镜和正透镜。 第二透镜组G2包括两个正透镜和一个负透镜。 至少一个正透镜具有非球面透镜表面。 变焦透镜满足限定透镜系统的总长度与第一透镜组G1的入射面的边缘光线高度的关系的条件（1）。

公开(公告)号：US09007469B2

公开(公告)日：2015-04-14

申请号：US13229284

申请日：2011-09-09

申请人： Satoru Yasutomi ,  Manabu Yoshii ,  Kunio Yamamiya ,  Naoki Fujii ,  Masato Miyata

发明人： Satoru Yasutomi ,  Manabu Yoshii ,  Kunio Yamamiya ,  Naoki Fujii ,  Masato Miyata

IPC分类号： H04N5/228 ,  H04N5/262 ,  G02B7/08 ,  G03B5/00

CPC分类号： G02B7/08 ,  G03B5/00 ,  G03B2205/0092

摘要： Provided is a lens barrel having, in order from an object side to an image side, a first to a third group lens, the lens barrel including: a fixed frame; a cam frame supported by the fixed frame so as to be rotationally movable in a optical axis direction between a forward and a backward movement ends; and a shutter frame which moves in the optical axis direction in a rotation restricted state, through the rotation of the cam frame, in which: a third group frame is fixed to the shutter frame so that the object side of the third group lens is arranged on an inner peripheral side of the shutter frame; and the second frame is configured so that the image side of the frame is stored on the inner peripheral side of the shutter frame when the cam frame is positioned at the backward movement end.

摘要翻译： 本发明提供一种透镜镜筒，其从物体侧到像侧依次具有第一至第三组透镜，镜筒包括：固定框架; 凸轮框架，其由所述固定框架支撑，以便能够在前后向后移动端之间沿光轴方向旋转移动; 以及通过凸轮框架的旋转沿旋转限制状态沿光轴方向移动的快门框架，其中：第三组框架固定到快门框架，使得第三组透镜的物体侧被布置 在快门框架的内周侧上; 并且第二框架被构造成使得当凸轮框架位于向后移动端时，框架的图像侧被存储在快门框架的内周侧。

公开(公告)号：US08325423B2

公开(公告)日：2012-12-04

申请号：US12661173

申请日：2010-03-11

申请人： Yuki Kubota ,  Masato Miyata ,  Nobumasa Kanbayashi

发明人： Yuki Kubota ,  Masato Miyata ,  Nobumasa Kanbayashi

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens system includes in order from an object side to an image side, 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, and a fourth lens unit G4 having a positive refracting power. At the time of zooming from a wide angle end to a telephoto end, distances between the lens units change. The third lens unit includes a first cemented lens component having a concave image-side surface on the image side, and a second cemented lens component having a concave object-side surface on the object side, which is disposed immediately after the image side of the first cemented lens component. The first cemented lens component includes a positive lens, and a negative lens having a concave image-side surface which is disposed on the image side of the positive lens. The second cemented lens component includes a negative lens having a concave object-side surface on the object side, and a positive lens which is disposed on the image side of the negative lens.

摘要翻译： 变焦透镜系统包括从物体侧到像侧的顺序，具有正折射率的第一透镜单元G1，具有负折射力的第二透镜单元G2，具有正折射率的第三透镜单元G3，以及 具有正折射率的第四透镜单元G4。 在从广角端到长焦端的变焦时，透镜单元之间的距离发生变化。 第三透镜单元包括在图像侧具有凹面像侧表面的第一胶合透镜部件和在物体侧具有凹面物侧表面的第二胶合透镜部件，其紧邻在 第一胶合透镜组件。 第一胶合透镜部件包括正透镜和设置在正透镜的像侧上的具有凹面像侧面的负透镜。 第二胶合透镜部件包括在物体侧具有凹形物体侧表面的负透镜，以及设置在负透镜的像侧的正透镜。