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1. 发明专利

JP2013171125A Projector optical system 审中-公开
标题翻译：投影仪光学系统
公开(公告)号：JP2013171125A
公开(公告)日：2013-09-02
申请号：JP2012034107
申请日：2012-02-20
申请人： Topcon Corp , 株式会社トプコン
发明人： SUZUKI SHIGEO , ISHII FUTOSHI
IPC分类号： G02B19/00 , G02B1/11 , G02B1/115 , G02B5/04 , G03B21/00 , G03B21/14
摘要： PROBLEM TO BE SOLVED: To provide a projector optical system that completely shields against light reflected from a prism face.SOLUTION: In a projector optical system that decomposes or composes light by a beam splitter and reflects the light by a DMD, thereby projecting it onto a screen, a clearance between the two prisms of the beam splitter is formed in the shape of a wedge, an angle between the normal of each prism with respect to a prism face and incident light beam is set to 72 degrees or less, and a reflection preventing film is provided on the prism face so as to continuously increase the degree of refraction index. Instead of forming the reflection preventing film, a minute projection recess cycle structure body can be formed on the prism face.
摘要翻译：要解决的问题：提供一种完全屏蔽从棱镜反射的光的投影仪光学系统。解决方案：在投影仪光学系统中，通过分束器分解或组成光并通过DMD反射光，从而将其投影到屏幕，分束器的两个棱镜之间的间隙形成为楔形，每个棱镜的法线相对于棱镜面和入射光束之间的角度设定为72度或更小，并且反射防止膜设置在棱镜面上，以连续地提高折射率。代替形成防反射膜，可以在棱镜面上形成微小的突起凹陷循环结构体。

2. 发明专利

JP2011085744A Projection lens for small projector 审中-公开
标题翻译：小投影机投影镜头
公开(公告)号：JP2011085744A
公开(公告)日：2011-04-28
申请号：JP2009238278
申请日：2009-10-15
申请人： Topcon Corp , 株式会社トプコン
发明人： SUZUKI SHIGEO
IPC分类号： G02B13/04 , G02B13/18 , G03B21/14
摘要： PROBLEM TO BE SOLVED: To provide a compact and bright projection lens for small projector with satisfactory image performance, which reduces cost by using only about five lenses. SOLUTION: The projection lens includes, sequentially from a screen side to the imaging side: a first lens having negative refractive power and made of plastic; a second lens having positive refractive power and having its convex surface facing the imaging side; and a third lens having positive refractive power and having its convex surface facing the screen side. In the second and third lenses, one is made of the plastic and the other is made of a glass. The projection lens further includes: a fourth lens having negative refractive power and made of the plastic; and a fifth lens having positive refractive power. The projection lens is formed to be substantially telecentric toward the imaging side. Among the first lens made of plastic, the second and third lens made of plastic or glass, and the fourth lens made of plastic, at least one surface of the plastic lens is formed in an aspherical shape. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供令人满意的图像性能的小型投影仪提供紧凑且明亮的投影透镜，通过仅使用约五个透镜来降低成本。解决方案：投影透镜从屏幕侧到成像侧依次包括：具有负屈光力并由塑料制成的第一透镜; 第二透镜，其具有正的折光力并且其凸表面面向成像侧; 以及具有正折光力并具有面向屏幕侧的凸面的第三透镜。在第二和第三透镜中，一个由塑料制成，另一个由玻璃制成。投影透镜还包括：具有负屈光力并由塑料制成的第四透镜; 以及具有正屈光力的第五透镜。投影透镜被形成为朝向成像侧基本上是远心的。在由塑料制成的第一透镜中，由塑料或玻璃制成的第二和第三透镜，以及由塑料制成的第四透镜，塑料透镜的至少一个表面形成为非球面形状。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2011081072A Projection lens for small projector 审中-公开
标题翻译：小投影机投影镜头
公开(公告)号：JP2011081072A
公开(公告)日：2011-04-21
申请号：JP2009231437
申请日：2009-10-05
申请人： Topcon Corp , 株式会社トプコン
发明人： KAMEI YUJI , SUZUKI SHIGEO
IPC分类号： G02B13/24 , G02B13/18
摘要： PROBLEM TO BE SOLVED: To provide a projection lens for a small projector, which is used for the small projector incorporated in a cellular phone, a mobile PC or the like.
SOLUTION: The projection lens for a small projector is used for enlarging and projecting an image on a video display element onto a screen. The projection lens includes four lenses, which are, in order from the screen, the positive first lens, the positive second lens, the negative third lens, and the positive fourth lens. At least one of the four lenses is a positive resin lens, and at least another one of them is a negative resin lens.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于小型投影仪的投影透镜，该投影仪用于结合在蜂窝电话中的小型投影机，移动PC等。
解决方案：用于小投影仪的投影透镜用于将视频显示元件上的图像放大并投影到屏幕上。投影透镜包括四个透镜，从透镜的顺序依次是正的第一透镜，正的第二透镜，负的第三透镜和正的第四透镜。四个透镜中的至少一个是正树脂透镜，并且其中至少另一个是负树脂透镜。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2008242237A Wide angle projection optical system and projector 审中-公开
标题翻译：宽角度投影光学系统和投影机
公开(公告)号：JP2008242237A
公开(公告)日：2008-10-09
申请号：JP2007084950
申请日：2007-03-28
申请人： Topcon Corp , 株式会社トプコン
发明人： SUZUKI SHIGEO
IPC分类号： G02B13/04 , G02B13/18
摘要： PROBLEM TO BE SOLVED: To provide a wide angle projection optical system achieving miniaturization of an entire projection system and increase of a projection angle so as to make a projection screen larger, and a projector.
SOLUTION: The wide angle projection optical system for projecting an image comprises a first group lens 21, a second group lens 22, and a third group lens 23. The first group lens comprises a wide angle lens including an aspherical lens, and the second group lens is constituted of three lenses.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种实现整个投影系统的小型化并增加投影角度以使投影屏幕变大的广角投影光学系统和投影仪。解决方案：用于投影图像的广角投影光学系统包括第一组透镜21，第二组透镜22和第三组透镜23.第一组透镜包括包括非球面透镜的广角透镜，以及第二组透镜由三个透镜构成。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2008158093A Mobile phone with liquid crystal projector 审中-公开
标题翻译：手机电话与液晶投影机
公开(公告)号：JP2008158093A
公开(公告)日：2008-07-10
申请号：JP2006344707
申请日：2006-12-21
申请人： Topcon Corp , 株式会社トプコン
发明人： SUZUKI SHIGEO , SAITO MICHIYO , SAIGA MAKOTO , KOBAYASHI MARIKO , NAKAMURA NAOKI
IPC分类号： G03B21/00 , G03B17/54 , H04M1/21 , H04N5/225 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To provide a mobile phone with a liquid crystal projector for reducing a manufacture cost by using a projection lens of the liquid crystal projector as a photographing lens, making it more slim and compact, and reducing the number of components. SOLUTION: The projection lens of the liquid crystal projector is also used as the photographing lens 3. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了通过使用液晶投影仪的投影透镜作为拍摄镜头来提供具有液晶投影仪的手机以降低制造成本，使其更加纤薄和紧凑，并且减少了数量组件。
解决方案：液晶投影机的投影透镜也用作拍摄镜头3.版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2005173319A Imaging lens 审中-公开
标题翻译：成像镜头
公开(公告)号：JP2005173319A
公开(公告)日：2005-06-30
申请号：JP2003414635
申请日：2003-12-12
申请人： Topcon Corp , 株式会社トプコン
发明人： SUZUKI SHIGEO , OKADA HIROMITSU
IPC分类号： G02B13/00 , G02B9/16 , G02B13/18 , H04N5/225
CPC分类号： G02B13/001 , G02B9/16
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive imaging lens which is miniaturized down to 6 mm in its total length, while securing the desired optical performance using a simple three lens configuration, and also maintaining megapixel resolution over a wide angle by correcting aberrations.
SOLUTION: The imaging lens is constituted by disposing three lenses, that is, a first lens convex on both sides, a second meniscus lens with its concave side facing the object, and a third meniscus lens with its convex side facing the object, in this order from the side of the object. Further, at least five surface or more are made aspherical.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种廉价的成像透镜，其在其总长度下小型化至6mm，同时通过简单的三透镜配置确保期望的光学性能，并且还通过修正广角来维持百万像素分辨率像差。解决方案：成像透镜通过将三个透镜（即，两侧凸起的第一透镜），其凹面朝向物体的第二弯月形透镜和其凸面朝向物体的第三弯月透镜，从这个顺序从对象的一边。此外，至少五个表面或更多个被制成非球面。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JPH10177138A PROJECTION LENS 失效
公开(公告)号：JPH10177138A
公开(公告)日：1998-06-30
申请号：JP14463297
申请日：1997-05-19
申请人： TOPCON CORP
发明人： SUZUKI SHIGEO
IPC分类号： G02B13/18 , G02B1/04 , G02B15/16
摘要： PROBLEM TO BE SOLVED: To reduce the constituting number of lenses so as to realize an inexpensive lens system, and to obtain a projection lens that is hardly influenced by temperature change and can include the wide angle of view excellently compensated in aberration, and that can be made compact and can be reduced in cost, by using an aspherical lens consisting of a plastic lens in the most part of the constituting lenses. SOLUTION: In this projection lens, a diverging lens group 1, a converging lens group 2 and a Fresnel lens group 3 are arranged from an enlarging side. Two negative lenses G1 and G2 on the front side of the lens group 1 are the lens consisting of plastic material and at lest one of them is made aspherical. The positive lens G5 and the negative lens G7 of the lens group 2 are the lens consisting of the plastic material. By using the lenses G1 , G2 , G5 and G7 consisting of the plastic material in a part of the constitution in such a way and correcting the shortcoming of the plastic lens, the power of each lens in the constitution is appropriately set.

8. 发明专利

JP2000035612A COLOR PICTURE PROJECTION DEVICE 失效
公开(公告)号：JP2000035612A
公开(公告)日：2000-02-02
申请号：JP20476198
申请日：1998-07-21
申请人： TOPCON CORP
发明人： SUZUKI SHIGEO
IPC分类号： G03B33/12 , G02F1/13 , G03B21/00
摘要： PROBLEM TO BE SOLVED: To enable a high-quality color picture to be enlarged and projected without making a projection lens group large-sized by eliminating the need of the lens of long back focus. SOLUTION: This device is provided with three luminous flux splitting members 3, 8 and 10 for projecting illumination luminous flux corresponding to three colors, three picture display means 4, 9 and 11 irradiated through the luminous flux splitting members, three first projection lens systems 20a, 20b and 20c for projecting the respective luminous flux reflected from the picture display means and transmitted through the luminous flux splitting members as the parallel luminous flux, a color synthesizing prism 5 for coaxially guiding the respective luminous flux projected from the first projection lens systems along an optical axis and a set of second projection lens systems 20d for projecting the respective luminous flux from the prism 5 on a screen 15 by superimposing them. By arranging the prism 5 among the projection lens systems, the need of the lens of the long back focus is eliminated. Thus, the high-quality color picture can be enlarged and projected without making the projection lens large-sized.

9. 发明专利

JPH0943508A HYBRID LENS 失效
公开(公告)号：JPH0943508A
公开(公告)日：1997-02-14
申请号：JP21245495
申请日：1995-07-28
申请人： TOPCON CORP
发明人： SUZUKI SHIGEO
IPC分类号： G02B9/34 , G02B13/18
摘要： PROBLEM TO BE SOLVED: To provide a bright hybrid lens of low cost having a high resolution. SOLUTION: This lens comprises, in order from the object side, a first positive lens group 1 composed of a biconvex lens whose convex surface confronts the object surface and made of a plastic material, a second negative lens group 2 composed of a biconcave lens and made of a plastic material, a third biconvex lens group 3 composed of a single lens or a joined lens and a fourth meniscus lens group 4 whose convex surface confronts the image plane side, having an intense refractive surface on the object side and made of a plastic material. At least one surface of the first lens group 1 is an aspherical shape, at least one surface of the fourth lens group 4 is an aspherical shape, by using the plastic material and forming the second negative lens group 2 and the fourth negative lens group 4 with the plastic material, the change of back focal length due to the change of a refractive index by the change of temp. is canceled and the deterioration of resolving power is suppressed.

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