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1. 发明授权

US5042929A Projection lens and projection system 失效
标题翻译：投影镜头和投影系统
公开(公告)号：US5042929A
公开(公告)日：1991-08-27
申请号：US494542
申请日：1990-03-16
申请人： Takaaki Tanaka , Yoshito Miyatake , Yuichi Kimura
发明人： Takaaki Tanaka , Yoshito Miyatake , Yuichi Kimura
IPC分类号： G02B13/16 , G02B13/04 , G02B13/18
CPC分类号： G02B13/18 , G02B13/04
摘要： A projection lens enlarges and projects optical images in a matrix type light valve onto a screen. The projection lens includes a front lens group of the retrofocusing type; a rear lens with aspherical surfaces whose radii of curvature in the peripheral portion are shorter than that in the central portion; and a reflecting mirror which is positioned between the front lens group and the rear lens and diverts the optical axis. This projection lens enables the optical images in the light valve to be projected with a high contrast and a wide field angle. A projection system is provided which includes a light source; a light valve; a converging optical apparatus; a transmission type screen; diverting place mirrors; and a projection lens to enlarge and project the optical images in the light valve onto the screen. Since the projection lens has a wide field angle and has the reflecting mirror provided therein, the projection system can be very compact.
摘要翻译：投影透镜将矩阵型光阀中的光学图像放大并投影到屏幕上。投影透镜包括后焦点类型的前透镜组; 具有非球面的后透镜，其周边部分的曲率半径比中心部分的半径更短; 以及反射镜，其位于前透镜组和后透镜之间并且使光轴转向。该投影透镜使光阀中的光学图像以高对比度和宽视场角投影。提供一种包括光源的投影系统; 一个光阀; 会聚光学装置; 传输类型屏幕; 分流镜子; 以及用于将光阀中的光学图像放大并投影到屏幕上的投影透镜。由于投影透镜具有宽的视场角，并且其中设置有反射镜，所以投影系统可以非常紧凑。

2. 发明授权

US5092664A Liquid crystal image projection system 失效
标题翻译：液晶图像投影系统
公开(公告)号：US5092664A
公开(公告)日：1992-03-03
申请号：US314073
申请日：1989-02-23
申请人： Yoshito Miyatake , Takaaki Tanaka
发明人： Yoshito Miyatake , Takaaki Tanaka
IPC分类号： G09F9/00 , G02F1/1337 , G02F1/139 , H04N5/74 , H04N9/31
CPC分类号： G02F1/1396
摘要： A liquid crystal image projection system projects an enlargement of an image formed in an active matrix liquid crystal panel onto a screen by using a lamp and a projector lens. The orientation of the liquid crystal panel is made such that a molecular axis vector directed from an input light side end to an output light side end of each liquid crystal molecule in the middle of the liquid crystal layer has a vector component opposite to the scanning direction of the panel, and a convergent light is entered into the liquid crystal panel. The system can solve the problem of nonuniformity of the signal voltage-transmittance characteristic of the entire screen.

3. 发明授权

US5371559A Light valve image projection apparatus 失效
标题翻译：光阀图像投影仪
公开(公告)号：US5371559A
公开(公告)日：1994-12-06
申请号：US975632
申请日：1992-11-13
申请人： Sinya San-Nohe , Takaaki Tanaka , Yoshito Miyatake
发明人： Sinya San-Nohe , Takaaki Tanaka , Yoshito Miyatake
IPC分类号： G02B27/18 , G02F1/13 , G03B33/12 , H04N5/74 , H04N9/31 , H04N17/00 , G03B21/14
CPC分类号： H04N9/3105
摘要： A light valve image projection apparatus includes a light source, field lens, liquid crystal panel, a projection lens assembly, and projection screen. The projection lens has a stop forming an aperture of the lens assembly decentered from the optical axis of the lenses of the projection lens assembly in the vertical scanning direction of the liquid crystal panel. Principal rays are approximately parallel to each other within the effective field angle on the side of the liquid crystal cell. In the light valve image projection apparatus principal rays, parallel to each other, are irradiated on the liquid crystal panel at an angle resulting in the highest contrast ratio to produce a projected image having uniformity and high contrast.
摘要翻译：光阀图像投影装置包括光源，场透镜，液晶面板，投影透镜组件和投影屏。投影透镜具有在液晶面板的垂直扫描方向上形成从投影透镜组件的透镜的光轴偏心的透镜组件的孔。主光线在液晶单元一侧的有效视场角内大致彼此平行。在光阀图像投影装置中，以相互平行的方式相互平行的主光线以导致最高对比度的角度照射，从而产生具有均匀性和高对比度的投影图像。

4. 发明授权

US5164821A Image projection system 失效
标题翻译：图像投影系统
公开(公告)号：US5164821A
公开(公告)日：1992-11-17
申请号：US760355
申请日：1991-09-16
申请人： Takaaki Tanaka , Yoshito Miyatake
发明人： Takaaki Tanaka , Yoshito Miyatake
IPC分类号： G03B33/12 , G02B27/28 , G02F1/13 , G02F1/1335 , G03B21/00 , H04N9/31
CPC分类号： H04N9/3158 , H04N9/3105
摘要： A projection system comprises a light source, a dichroic mirror for separating white light into blue, green and red color light beams, a halfwave plate for converting the direction of polarization, three light valves for forming optical images depending on a picture signal, and three projection lenses for projecting the optical images on the light valves onto a screen. By using the halfwave plate, the color light of p-polarized light component or s-polarized light component emitted from the dichroic mirror is entered into the liquid crystal panel. The gradient width of the spectral distribution of the color light entering the liquid crystal panel is smaller, and the color nonuniformity of projected image by changes of spectral transmittance characteristic of the dichroic mirror with respect to the incident angle is reduced.

5. 发明授权

US08339501B2 Zoom lens system, imaging device and camera 有权
标题翻译：变焦镜头系统，成像设备和相机
公开(公告)号：US08339501B2
公开(公告)日：2012-12-25
申请号：US12879535
申请日：2010-09-10
申请人： Takakazu Bito , Yoshito Miyatake , Mamoru Honjo
发明人： Takakazu Bito , Yoshito Miyatake , Mamoru Honjo
IPC分类号： H04N5/225
CPC分类号： G02B15/173 , G02B27/646
摘要： A zoom lens system comprising a plurality of lens units each composed of at least one lens element, wherein the zoom lens system, in order from the object side to the image side, comprises: a first lens unit having positive optical power and comprising four lens elements; a second lens unit having negative optical power; and a third lens unit having positive optical power; wherein in zooming from a wide-angle limit to a telephoto limit at the time of image taking, at least the first lens unit is moved along an optical axis direction so as to achieve variable magnification, and wherein the conditions are satisfied: 0.30 20.5 (f1 is a composite focal length of the first lens unit, fW is a focal length of the entire system at a wide-angle limit, and fT is a focal length of the entire system at a telephoto limit), an imaging device and a camera are provided.
摘要翻译：一种变焦透镜系统，包括多个透镜单元，每个透镜单元均由至少一个透镜元件组成，其中所述变焦透镜系统从物体侧到像侧依次包括：具有正光焦度的第一透镜单元，包括四个透镜元素具有负光焦度的第二透镜单元; 和具有正光焦度的第三透镜单元; 其中，在从摄像时的广角限制变焦到远摄极限时，至少第一透镜单元沿着光轴方向移动，以实现可变放大倍数，并且其中满足条件：0.30 20.5（f1是第一透镜单元的复合焦距，fW是整个系统在广角极限处的焦距，fT是整体的焦距系统在远摄极限），提供成像装置和照相机。

6. 发明授权

US5513035A Infrared polarizer 失效
标题翻译：红外线偏振片
公开(公告)号：US5513035A
公开(公告)日：1996-04-30
申请号：US294951
申请日：1994-08-24
申请人： Yoshito Miyatake , Shinya Sannohe
发明人： Yoshito Miyatake , Shinya Sannohe
IPC分类号： G02B5/30 , G02B27/28 , H04N9/31 , G02B1/08 , G02B1/10
CPC分类号： H04N9/3167 , G02B27/283 , G02B5/3033 , H04N9/3105
摘要： A polarizer comprising; a substrate transparent to a light of actual use and optical thin films of a higher refractive index than that of said substrate deposited on both surfaces of said substrate. The substrate is arranged so as to receive the incident light obliquely thereto. When the incident angle and the thickness of the optical thin film are optimally selected, the transmittance for the P polarized light can be made approximately 100%, while that for the S polarized light very small. The polarizer can extract a substantially linearly polarized light from natural light, A projection image display system has the polarizer as its pre-polarizer. The polarizer is also useful for infrared radiation.
摘要翻译：一种偏振器，包括：对实际使用的光透明的衬底和比沉积在所述衬底的两个表面上的所述衬底的折射率更高的光学薄膜。基板被布置成倾斜地接收入射光。当光学薄膜的入射角度和厚度被最佳选择时，P偏振光的透射率可以大致为100％，而S偏振光的透射率非常小。偏振器可以从自然光中提取基本上线性的偏振光。投影图像显示系统具有偏振器作为其预偏振器。偏振器也可用于红外辐射。

7. 发明授权

US5357370A Polarizer and light valve image projector having the polarizer 失效
标题翻译：具有偏振器的偏光镜和光阀图像投影仪
公开(公告)号：US5357370A
公开(公告)日：1994-10-18
申请号：US888773
申请日：1992-05-27
申请人： Yoshito Miyatake , Shinya Sannohe
发明人： Yoshito Miyatake , Shinya Sannohe
IPC分类号： G02B5/30 , G02B27/28 , H04N9/31
CPC分类号： H04N9/3167 , G02B27/283 , G02B5/3033 , H04N9/3105
摘要： A polarizer comprising; a substrate transparent to a light of actual use and optical thin films of a higher refractive index than that of said substrate deposited on both surfaces of said substrate. The substrate is arranged so as to receive the incident light obliquely thereto. When the incident angle and the thickness of the optical thin film are optimally selected, the transmittance for the P polarized light can be made approximately 100%, while that for the S polarized light very small. The polarizer can extract a substantially linearly polarized light from natural light. A projection image display system has the polarizer as its pre-polarizer. The polarizer is also useful for infrared radiation.
摘要翻译：一种偏振器，包括：对实际使用的光透明的衬底和比沉积在所述衬底的两个表面上的所述衬底的折射率更高的光学薄膜。基板被布置成倾斜地接收入射光。当光学薄膜的入射角度和厚度被最佳选择时，P偏振光的透射率可以大致为100％，而S偏振光的透射率非常小。偏振器可以从自然光中提取基本上线性的偏振光。投影图像显示系统具有偏振器作为其预偏振器。偏振器也可用于红外辐射。

8. 发明授权

US4936656A Video projector 失效
公开(公告)号：US4936656A
公开(公告)日：1990-06-26
申请号：US168318
申请日：1988-03-18
申请人： Ichiro Yamashita , Mamoru Takeda , Yoshito Miyatake , Yoneharu Takubo
发明人： Ichiro Yamashita , Mamoru Takeda , Yoshito Miyatake , Yoneharu Takubo
IPC分类号： G02F1/1362 , H04N5/74
CPC分类号： G02F1/13624 , H04N5/7441 , G02F1/136213
摘要： A video projector utilizes a reflective liquid crystal light valve of the active matrix system and a polarizing beam splitter. An active matrix array circuit of the light valve has pixel electrodes arranged in a matrix mattern. The pixel electrodes each has a reflective surface for reflecting a light beam and protects corresponding switch elements from the light beam. There are provided at least two switch elements for each of the pixel electrodes so as to enhance the redundancy of the array circuit. Further, each pixel electrode is provided with a suitable additional capacitance.

9. 发明申请

US20080297916A1 ZOOM LENS SYSTEM, IMAGING DEVICE AND CAMERA 有权
标题翻译：变焦镜头系统，成像设备和摄像机
公开(公告)号：US20080297916A1
公开(公告)日：2008-12-04
申请号：US12127345
申请日：2008-05-27
申请人： Keiki Yoshitsugu , Katsu Yamada , Yoshito Miyatake , Kazuhiko Ishimaru
发明人： Keiki Yoshitsugu , Katsu Yamada , Yoshito Miyatake , Kazuhiko Ishimaru
IPC分类号： G02B15/14
CPC分类号： G02B15/177 , G02B7/021
摘要： A zoom lens system comprising a first lens unit having negative power, a second lens unit having positive power and a third lens unit having positive power, wherein: the first lens unit comprises a first lens element having a concave surface at least on the image side and negative power and a second lens element having a convex surface at least on the object side and positive power; the second lens unit comprises a cemented lens element fabricated by two lens elements having optical power of mutually different signs and one single lens element; in zooming, all of the lens units move along an optical axis; and conditions (1): 5.0 35, αiW is an incident angle of a principal ray to an image sensor at a maximum image height at a wide-angle limit, n11 is a refractive index of the first lens element to the d-line, ωW is a half view angle at a wide-angle limit, and fT and fW are focal lengths of the entire system at a telephoto limit and a wide-angle limit, respectively) are satisfied.
摘要翻译：一种变焦透镜系统，包括具有负功率的第一透镜单元，具有正光焦度的第二透镜单元和具有正光焦度的第三透镜单元，其中：所述第一透镜单元包括至少在图像侧具有凹面的第一透镜元件负电源和至少在物体侧具有凸面的正电力的第二透镜元件; 第二透镜单元包括由具有相互不同标志的光学功率的两个透镜元件和一个单一透镜元件制成的胶合透镜元件; 在变焦中，所有的透镜单元沿光轴移动; 和条件（1）：5.0 = 1.9（其中，3.2 35，alphaiW是主光线与图像传感器的入射角在广角极限处的最大图像高度，n11是第一透镜元件对d线的折射率，ω是宽广角极限处的半视角，fT和fW是整体的焦距系统分别在远摄极限和广角限制）。

10. 发明授权

US07023623B2 Zoom lens and electronic still camera using the same 失效
标题翻译：变焦镜头和电子静物相机使用相同
公开(公告)号：US07023623B2
公开(公告)日：2006-04-04
申请号：US10499790
申请日：2003-04-10
申请人： Yoshito Miyatake , Keiki Yoshitsugu
发明人： Yoshito Miyatake , Keiki Yoshitsugu
IPC分类号： G02B15/14
CPC分类号： G02B15/14 , G02B13/18 , G02B15/177
摘要： It is an object to provide a zoom lens made of three groups having a zoom ratio of ×2.5 to ×3.2 if the object distance is ∞, an field angle at the wide-angle end of 60° to 70°, high resolution, and a short optical total length when not in use. The zoom lens is made of a first lens group (G1) with a negative power, a second lens group (G2) with a positive power, and a third lens group (G3) with a positive power, arranged in that order from an object side to an image plane (S) side. The first lens group (G1) is made of a first lens (L1) that is a negative meniscus lens whose surface with strong curvature is facing the image plane (S) side and a second lens (L2) that is a positive meniscus lens whose surface with strong curvature is facing the object side, arranged in that order from the object side. The second lens group (G2) is made of a third lens (L3) that is a positive lens whose convex surface is facing the object side, a fourth lens (L4) that is a positive lens, a fifth lens (L5) that is a negative lens, and a sixth lens (L6) that is a plano-convex lens whose convex surface is facing the image plane (S) side, arranged in that order from the object side. The third lens group (G3) is made of a single seventh lens (L7) that is a positive lens.
摘要翻译：本发明的目的是提供一种由三个组成的变焦透镜，如果对象距离为∞，则广角端的视场角为60°至70°，高分辨率，并且在不使用时具有短的光学总长度。变焦透镜由具有负功率的第一透镜组（G 1），具有正光焦度的第二透镜组（G 2）和具有正功率的第三透镜组（G 3）以该顺序布置从物体侧到图像平面（S）侧。第一透镜组（G 1）由作为负弯月形透镜的第一透镜（L 1）制成，其具有强曲率的表面面向图像平面（S）侧，第二透镜（L 2）为正凹凸透镜，其表面具有较强的曲率面向物体侧，从物体侧依次排列。第二透镜组（G 2）由凸面朝向物体侧的正透镜的第三透镜（L 3），作为正透镜的第四透镜（L 4），第五透镜（L 5）和作为凸面朝向像平面（S）侧的平凸透镜的第六透镜（L 6），从物体侧依次排列。第三透镜组（G 3）由作为正透镜的单个第七透镜（L 7）制成。

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