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    • 2. 发明授权
    • Photographic lens
    • 摄影镜头
    • US5675440A
    • 1997-10-07
    • US420785
    • 1995-04-12
    • Tatsuru Kanamori
    • Tatsuru Kanamori
    • G02B13/18G02B1/04G02B15/14G02B15/16G02B3/02G02B7/02
    • G02B15/16
    • The invention provides a photographic lens which uses a low-hygroscopicity resin lens component as a constitutional component, is made compact without incurring some expense, and enables the optical properties to be kept stable to an atmospheric humidity change. The photographic lens is of the single-focus or varifocallength type that comprises a plurality of lens components among which at least one or more lens components are resin lens components, wherein at least one of the resin lens components is formed of a low-hygroscopicity resin. For instance, the invention is applicable to a single-focus lens comprising four lens components, i.e., a positive meniscus lens component convex on the object side, a double-concave lens component, a double-convex lens component and a negative meniscus lens component convex on the image surface side. If a polyolefin type resin that is a low-hygroscopicity resin is used for the fourth lens component of this single-focus lens, it is then possible to obtain a single-focus lens which is of small size, inexpensive and stable in optical properties to an atmospheric humidity change.
    • 本发明提供了一种使用低吸湿性树脂透镜部件作为构成部件的照相镜片,其制造紧凑而不产生一些费用,并且使得光学性能能够保持与大气湿度变化的稳定性。 摄影镜头是单焦点或变焦镜头类型,其包括多个透镜部件,其中至少一个或多个透镜部件是树脂透镜部件,其中至少一个树脂透镜部件由低吸湿性树脂形成 。 例如,本发明可应用于包括四个透镜部件的单焦点透镜,即在物体侧凸出的正弯月透镜部件,双凹透镜部件,双凸透镜部件和负弯月形透镜部件 在图像表面侧凸起。 如果将该单焦点透镜的第四透镜部件使用作为低吸湿性树脂的聚烯烃型树脂,则可以获得小尺寸,廉价且光学性能稳定的单焦点透镜, 大气湿度变化。
    • 3. 发明授权
    • Lens system for a projection display apparatus in which lenses are uniform in one direction and nonuniform in another
    • 用于投影显示装置的透镜系统,其中透镜在一个方向上均匀并且在另一方向上不均匀
    • US06559900B1
    • 2003-05-06
    • US09481019
    • 2000-01-11
    • Tatsuru KanamoriMakoto ShinodaTohru KawaiKenji Sugihara
    • Tatsuru KanamoriMakoto ShinodaTohru KawaiKenji Sugihara
    • G02F11335
    • G02B27/0961G02B27/0927G03B21/2073H04N9/3105H04N9/315
    • In a projection type display apparatus that projects an image by inputting a light beam emitted from a light source to a spatial light modulation device, it is intended to provide a lens array as a component of an illumination optical system that is low in manufacturing cost, provides high screen illuminance, and enables miniaturization of the projection type display apparatus. The dimension of the cell lenses of a second lens array is not uniform in one of the row direction and the column direction. Since the cell lenses are rectangular when viewed from the front side, the second lens array can be manufactured with a metal mold having a simple shape. The boundary lines between the cell lenses are straight and level differences at the boundary lines are small, sink marks of the second lens array are small, and the efficiency of utilization of light beams is high. Further, since the dimension of the cell lenses is not uniform in the other of the row direction and the column direction, the corresponding dimension of the second lens array can be reduced.
    • 在通过将从光源发射的光束输入到空间光调制装置来投影图像的投影型显示装置中,旨在提供作为制造成本低的照明光学系统的部件的透镜阵列, 提供高屏幕照度,并且能够实现投影型显示装置的小型化。 第二透镜阵列的单元透镜的尺寸在行方向和列方向之一上不均匀。 由于当从前侧观察时,单元透镜是矩形的,所以可以用简单形状的金属模制造第二透镜阵列。 单元透镜之间的边界线是直的,边界线处的电平差小,第二透镜阵列的凹痕小,并且光束的利用效率高。 此外,由于单元透镜的尺寸在行方向和列方向上的另一个上不均匀,所以可以减小第二透镜阵列的相应尺寸。
    • 4. 发明授权
    • Real image mode variable magnification finder optical system
    • 实像模式可变倍率取景器光学系统
    • US5570229A
    • 1996-10-29
    • US260407
    • 1994-06-14
    • Tatsuru Kanamori
    • Tatsuru Kanamori
    • G02B15/16G02B23/14G02B25/00G03B13/12G02B23/00G03B13/08
    • G03B13/12G02B23/14G02B23/145
    • A real image mode variable magnification finder optical system is provided with an objective lens having a positive refracting power and an eyepiece having a positive refracting power. The objective lens includes the first lens unit having a negative refracting power, the second lens unit having a positive refracting power which is movable for varying magnification, and the third lens unit having a positive refracting power which is movable for varying magnification. Moreover, the objective lens has the first reflecting surface for erecting an image on the entrance side of the region of a space provided on the object side of the second lens unit to move lenses when a change of magnification is made, and the second reflecting surface for erecting the image between the third lens unit and an intermediate imaging plane. Thus, the finder optical system brings about a reduction of thickness of a camera body, favorable correction for aberration, and cost reduction.
    • 实像可变放大倍数取景器光学系统设有具有正折射率的物镜和具有正折射力的目镜。 该物镜包括具有负折射力的第一透镜单元,该第二透镜单元具有正的折射能力,该折射能力可移动以用于变化的倍率,并且该第三透镜单元具有正的折射能力,该折射能力可移动以用于变化的倍率。 此外,物镜具有第一反射面,用于在设置在第二透镜单元的物体侧的空间的区域的入射侧上竖立图像,以在进行变化时移动透镜,并且第二反射面 用于竖立第三透镜单元和中间成像平面之间的图像。 因此,取景器光学系统导致相机机身的厚度减小,有利的像差校正和成本降低。
    • 5. 发明授权
    • Compact zoom lens system
    • 小型变焦镜头系统
    • US5325235A
    • 1994-06-28
    • US835354
    • 1992-02-14
    • Masaru TakashimaTatsuru Kanamori
    • Masaru TakashimaTatsuru Kanamori
    • G02B13/18G02B15/163G02B15/20G02B15/14
    • G02B15/163
    • The present invention relates to a compact zoom lens system having a long back focus and a zoom ratio of about 1.7, which comprises a first lens unit G1 having a positive focal length, a second lens unit G2 having a positive focal length and a third lens unit G3 having a negative focal length, said first, second and third lens units G1, G2 and G3 being all movable toward the object side during zooming from the wide angle to telephoto side such that the first and second lens units G1 and G2 are spaced away from each other, while the second and third lens units G2 and G3 are moved toward each other, and is characterized by conforming to the following conditional formula:0.34
    • 本发明涉及具有大约1.7的长后焦距和变焦倍数的紧凑型变焦透镜系统,其包括具有正焦距的第一透镜单元G1,具有正焦距的第二透镜单元G2和第三透镜 具有负焦距的单元G3,在从广角向望远侧变焦期间,所述第一,第二和第三透镜单元G1,G2和G3都可以朝向物体侧移动,使得第一和第二透镜单元G1和G2间隔开 而第二和第三透镜单元G2和G3彼此移动,并且其特征在于符合以下条件公式:0.34
    • 7. 发明授权
    • Optical device and display apparatus
    • 光学装置及显示装置
    • US06186629B1
    • 2001-02-13
    • US09216547
    • 1998-12-18
    • Atsushi IwamuraTatsuru KanamoriToru Kawai
    • Atsushi IwamuraTatsuru KanamoriToru Kawai
    • G03B2100
    • G03B21/10G03B21/2073G03B21/208G03B33/12H04N9/3105H04N9/3152H04N9/3167
    • An illumination optical device has the following elements. A first optical block includes a first lens array having a plurality of cell lenses each being approximately similar in shape to a light modulation device. A second optical block includes a second lens array having a plurality of cell lenses corresponding to the respective cell lenses of the first lens array of the first optical block and each being approximately similar in shape to the light modulation device, and a first converging component for converging beams that have passed through the second lens array toward the light modulation device. A second converging component is disposed in the vicinity of the light modulation device and serves to image beams that are output from the second optical block at a predetermined position. The cell lenses of the first lens array have different aspherical surfaces.
    • 照明光学装置具有以下要素。 第一光学块包括具有多个单元透镜的第一透镜阵列,每个单元透镜的形状大致与光调制装置相似。 第二光学块包括第二透镜阵列,该第二透镜阵列具有与第一光学块的第一透镜阵列的各个单元透镜相对应的多个单元透镜,并且每个单元透镜的形状大致与光调制装置的形状近似相似;以及第一会聚部件, 已经通过第二透镜阵列的会聚光束朝向光调制装置。 第二会聚部件设置在光调制装置附近,用于将从第二光学块输出的光束成像在预定位置。 第一透镜阵列的单元透镜具有不同的非球面。
    • 8. 发明授权
    • Zoom lens system having minimal aberration fluctuation at short object
distance
    • 变焦镜头系统在短物距处具有最小的像差波动
    • US5764421A
    • 1998-06-09
    • US155739
    • 1993-11-22
    • Seiji ShimizuTatsuru Kanamori
    • Seiji ShimizuTatsuru Kanamori
    • G02B13/18G02B15/177G02B15/20G02B15/22G02B15/14
    • G02B15/177
    • A zoom lens system having three lens units, that is, a negative lens unit, a positive lens unit, and a negative lens unit. The idea of floating system is introduced into the rear focusing system to minimize the degree of aberration fluctuation at a short object distance with a simple lens arrangement, thereby stabilizing the optical performance during focusing at a short object distance. The zoom lens system includes a 1-st lens unit (G1) having a negative refractive power, a 2-nd lens unit (G2) having a positive refractive power, and a 3-rd lens unit (G3) having a negative refractive power, and effects zooming from the wide end to the tele end by varying the spacing between each pair of adjacent lens units. With the 2-nd lens unit (G2) defined as a focusing lens unit, focusing is effected by varying the axial air spacing between a lens component (L.sub.F) of the 2-nd lens unit (G2) that is the closest to the image side and the remaining lens component (L.sub.F ').
    • 具有三个透镜单元的变焦透镜系统,即负透镜单元,正透镜单元和负透镜单元。 将浮动系统的想法引入到后聚焦系统中,以简单的透镜布置来使物体距离短的像差波动程度最小化,从而在短对象距离聚焦期间稳定光学性能。 变焦透镜系统包括具有负折光力的第一透镜单元(G1),具有正折光力的第二透镜单元(G2)和具有负折光力的三维透镜单元(G3) ,并且通过改变每对相邻透镜单元之间的间距,从宽端到远端的效果变化。 通过将第二透镜单元(G2)定义为聚焦透镜单元,通过改变最靠近图像的第二透镜单元(G2)的透镜部件(LF)之间的轴向空气间隔来实现聚焦 侧和剩余的透镜部件(LF')。