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1. 发明授权

US06768594B2 Projection lens apparatus and rear projection type image display apparatus using the same 有权
标题翻译：投影透镜装置和使用其的背投型图像显示装置
公开(公告)号：US06768594B2
公开(公告)日：2004-07-27
申请号：US10113337
申请日：2002-03-28
申请人： Daisuke Imafuku , Naoyuki Ogura , Kazunari Nakagawa , Koji Hirata , Hidehiro Ikeda , Shuji Kato
发明人： Daisuke Imafuku , Naoyuki Ogura , Kazunari Nakagawa , Koji Hirata , Hidehiro Ikeda , Shuji Kato
IPC分类号： G02B300
CPC分类号： G02B13/08
摘要： In a projection lens, there are arranged in order from a screen side, a first lens group including a meniscus lens having a convex lens surface in a central portion toward a screen with refracting power, a second lens group including a lens having a convex lens surface in a central portion toward a video generating source, a third lens group including a lens having convex lens surfaces in both sides with positive refracting power, a fourth lens group including a lens having a convex lens surface in a central portion toward the video generating source with positive refracting power, and a fifth lens group including a lens having a concave lens surface toward the screen with negative refracting power. An entrance pupil is arranged between incident and emitting surfaces of a power lens.
摘要翻译：在投影透镜中，从屏幕侧依次配置第一透镜组，第一透镜组包括具有中心部分的具有折射力的屏幕的凸透镜表面的弯月形透镜;第二透镜组，包括具有凸透镜的透镜在朝向视频产生源的中心部分中的表面;第三透镜组，包括具有正折射力的两侧具有凸透镜表面的透镜;第四透镜组，包括在朝向视频产生的中心部分具有凸透镜表面的透镜具有正折射力的源;以及第五透镜组，包括具有朝向屏幕的凹透镜表面的透镜，具有负折射率。入射光瞳配置在功率透镜的入射面和发射面之间。

2. 发明授权

US07172292B2 Projection lens unit and rear projection type image display system 失效
标题翻译：投影镜头单元和背投式图像显示系统
公开(公告)号：US07172292B2
公开(公告)日：2007-02-06
申请号：US10865549
申请日：2004-06-09
申请人： Hidehiro Ikeda , Shuji Kato , Koji Hirata , Naoyuki Ogura
发明人： Hidehiro Ikeda , Shuji Kato , Koji Hirata , Naoyuki Ogura
IPC分类号： G03B21/14 , G02B17/00
CPC分类号： G02B13/02
摘要： An inexpensive projection lens unit in a rear projection type image display system, having a short focal distance (wide angle of viewing field), high focus and high contrast, and as well, including a power lens made of a glass material having a high refractive index in a range from 1.63 to 1.70 and an Abbe's number of not less than 50 with an optimized incident and emergent configuration in order to satisfactorily correct aberration with a enhanced focusing performance even with a shortened focal distance. Further, the power lens having a high refractive index can exhibit a high power, and accordingly, can carry out satisfactory aberration correction by optimizing the aspheric degree of a plastic lens even though the length of back focus is increased for enhancing the contrast.
摘要翻译：背投影型图像显示系统中的廉价的投影透镜单元，具有短焦距（观察视角宽），高焦距和高对比度，并且还包括由具有高折射率的玻璃材料制成的功率透镜指数在1.63至1.70之间，阿贝数不少于50，具有优化的入射和紧急配置，以便即使缩短焦距也能以更好的聚焦性能令人满意地校正像差。此外，具有高折射率的功率透镜可以表现出高功率，因此，即使增加后焦距的长度以增强对比度，也可以通过优化塑料透镜的非球面度来进行令人满意的像差校正。

3. 发明授权

US07404646B2 Projection lens apparatus and rear projection type image display apparatus 失效
标题翻译：投影透镜装置和背投型图像显示装置
公开(公告)号：US07404646B2
公开(公告)日：2008-07-29
申请号：US11060251
申请日：2005-02-18
申请人： Yuriko Inadachi , Shuji Kato , Hidehiro Ikeda , Naoyuki Ogura , Koji Hirata
发明人： Yuriko Inadachi , Shuji Kato , Hidehiro Ikeda , Naoyuki Ogura , Koji Hirata
IPC分类号： G03B21/20 , G03B9/00
CPC分类号： G02B13/16 , G02B13/18 , G03B21/10 , G03B21/20
摘要： A projection lens apparatus includes a plurality of lenses, for enlarging and projecting, onto a screen, an original image displayed on an image generation source. The plurality of lenses are arranged, beginning with the lens nearest the screen, as first to sixth lens groups. The fourth lens group includes one meniscus lens that has a positive refracting power and has a concave lens surface directed toward the screen. The concave lens surface of the meniscus lens included in the fourth group lens has a curvature in the vicinity of an outer portion of the concave lens surface that is smaller than a curvature in a predetermined area of the concave lens surface defined between a light axis of the concave lens surface of the meniscus lens and the smaller curvature of the concave lens surface in the vicinity of the outer portion of the concave lens surface.
摘要翻译：投影透镜装置包括多个透镜，用于将显示在图像产生源上的原始图像放大并投影到屏幕上。多个透镜从最靠近屏幕的透镜开始设置为第一至第六透镜组。第四透镜组包括具有正折射率的一个弯月形透镜，并且具有指向屏幕的凹透镜表面。包括在第四组透镜中的凹凸透镜的凹透镜表面在凹透镜表面的外部附近具有小于在凹透镜表面的预定区域中的曲率的曲率，所述凹透镜表面的光轴凹透镜的凹透镜表面和凹透镜表面在凹透镜表面的外部附近的较小曲率。

4. 发明授权

US07347566B2 Projection lens unit and rear projection type image display system 失效
标题翻译：投影镜头单元和背投式图像显示系统
公开(公告)号：US07347566B2
公开(公告)日：2008-03-25
申请号：US11649544
申请日：2007-01-03
申请人： Hidehiro Ikeda , Shuji Kato , Koji Hirata , Naoyuki Ogura
发明人： Hidehiro Ikeda , Shuji Kato , Koji Hirata , Naoyuki Ogura
IPC分类号： G03B21/14 , G02B17/00
CPC分类号： G02B13/02
摘要： An inexpensive projection lens unit in a rear projection type image display system, having a short focal distance (wide angle of viewing field), high focus and high contrast, and as well, including a power lens made of a glass material having a high refractive index in a range from 1.63 to 1.70 and an Abbe's number of not less than 50 with an optimized incident and emergent configuration in order to satisfactorily correct aberration with a enhanced focusing performance even with a shortened focal distance. Further, the power lens having a high refractive index can exhibit a high power, and accordingly, can carry out satisfactory aberration correction by optimizing the aspheric degree of a plastic lens even though the length of back focus is increased for enhancing the contrast.
摘要翻译：背投影型图像显示系统中的廉价的投影透镜单元，具有短焦距（观察视角宽），高焦距和高对比度，并且还包括由具有高折射率的玻璃材料制成的功率透镜指数在1.63至1.70之间，阿贝数不少于50，具有优化的入射和紧急配置，以便即使缩短焦距也能以更好的聚焦性能令人满意地校正像差。此外，具有高折射率的功率透镜可以表现出高功率，因此，即使增加后焦距的长度以增强对比度，也可以通过优化塑料透镜的非球面度来进行令人满意的像差校正。

5. 发明申请

US20050259228A1 Projection lens apparatus and rear projection type image display apparatus 失效
标题翻译：投影透镜装置和背投型图像显示装置
公开(公告)号：US20050259228A1
公开(公告)日：2005-11-24
申请号：US11060251
申请日：2005-02-18
申请人： Yuriko Inadachi , Shuji Kato , Hidehiro Ikeda , Naoyuki Ogura , Koji Hirata
发明人： Yuriko Inadachi , Shuji Kato , Hidehiro Ikeda , Naoyuki Ogura , Koji Hirata
IPC分类号： G02B13/16 , G02B13/18 , G03B21/00 , G03B21/10 , G03B21/20 , G03B21/22
CPC分类号： G02B13/16 , G02B13/18 , G03B21/10 , G03B21/20
摘要： For a projection lens apparatus having a six-group structure that enlarges and projects an image displayed on a projection tube, an appropriate distance is maintained between a power lens and an aspherical lens group that is located near a power lens on the image generation source side, and physical interference with the power lens is eliminated, so that productivity is increased while a cost reduction is achieved. A meniscus lens that has a concave face directed toward a screen and has a refracting power is employed as an aberration correction lens (fourth group lens 4) that is located near the power lens (third group lens 3) on the image generation source side. Further, the lens surface of the meniscus lens on the screen side has an aspherical shape, so that a curvature is increased from the light axis to a predetermined point located between the light axis and the outer edge, and is reduced from the predetermined point to the outer edge. Furthermore, an inexpensive low refractive index material that has an Abbe number (νd) of 57 or higher and a refractive index (nd) of 1.500 or lower and that has superior flowability is employed as the base material for the fourth group lens that is located nearest the glass power lens on the image generation source side.
摘要翻译：对于具有六组结构的投影透镜装置，其放大并投影显示在投影管上的图像，在功率透镜和位于图像生成源侧的功率透镜附近的非球面透镜组之间保持适当的距离并且消除了与功率透镜的物理干扰，从而在实现成本降低的同时提高了生产率。使用具有朝向屏幕的凹面并具有折射光焦度的弯月形透镜作为位于图像产生源侧的功率透镜（第三组透镜3）附近的像差校正透镜（第四组透镜4）。此外，屏幕侧的弯月透镜的透镜表面具有非球面形状，使得曲率从光轴增加到位于光轴和外边缘之间的预定点，并且从预定点减小到外边缘。此外，使用阿贝数（nud）为57以上且折射率（nd）为1.500以下且具有优异的流动性的便宜的低折射率材料作为位于第四组透镜的基材最靠近图像生成源侧的玻璃功率透镜。

6. 发明申请

US20070109666A1 Projection lens unit and rear projection type image display system 失效
公开(公告)号：US20070109666A1
公开(公告)日：2007-05-17
申请号：US11649544
申请日：2007-01-03
申请人： Hidehiro Ikeda , Shuji Kato , Koji Hirata , Naoyuki Ogura
发明人： Hidehiro Ikeda , Shuji Kato , Koji Hirata , Naoyuki Ogura
IPC分类号： G02B15/14
CPC分类号： G02B13/02
摘要： An inexpensive projection lens unit in a rear projection type image display system, having a short focal distance (wide angle of viewing field), high focus and high contrast, and as well, including a power lens made of a glass material having a high refractive index in a range from 1.63 to 1.70 and an Abbe's number of not less than 50 with an optimized incident and emergent configuration in order to satisfactorily correct aberration with a enhanced focusing performance even with a shortened focal distance. Further, the power lens having a high refractive index can exhibit a high power, and accordingly, can carry out satisfactory aberration correction by optimizing the aspheric degree of a plastic lens even though the length of back focus is increased for enhancing the contrast.

7. 发明申请

US20050052628A1 Projection lens unit and rear projection type image display system 失效
标题翻译：投影镜头单元和背投式图像显示系统
公开(公告)号：US20050052628A1
公开(公告)日：2005-03-10
申请号：US10865549
申请日：2004-06-09
申请人： Hidehiro Ikeda , Shuji Kato , Koji Hirata , Naoyuki Ogura
发明人： Hidehiro Ikeda , Shuji Kato , Koji Hirata , Naoyuki Ogura
IPC分类号： G02B13/16 , G02B13/02 , G02B13/18 , G03B21/14 , G03B21/20
CPC分类号： G02B13/02
摘要： An inexpensive projection lens unit in a rear projection type image display system, having a short focal distance (wide angle of viewing field), high focus and high contrast, and as well, including a power lens made of a glass material having a high refractive index in a range from 1.63 to 1.70 and an Abbe's number of not less than 50 with an optimized incident and emergent configuration in order to satisfactorily correct aberration with a enhanced focusing performance even with a shortened focal distance. Further, the power lens having a high refractive index can exhibit a high power, and accordingly, can carry out satisfactory aberration correction by optimizing the aspheric degree of a plastic lens even though the length of back focus is increased for enhancing the contrast.
摘要翻译：背投影型图像显示系统中的廉价的投影透镜单元，具有短焦距（观察视角宽），高焦距和高对比度，并且还包括由具有高折射率的玻璃材料制成的功率透镜指数在1.63至1.70之间，阿贝数不少于50，具有优化的入射和紧急配置，以便即使缩短焦距也能以更好的聚焦性能令人满意地校正像差。此外，具有高折射率的功率透镜可以表现出高功率，因此，即使增加后焦距的长度以增强对比度，也可以通过优化塑料透镜的非球面度来进行令人满意的像差校正。

8. 发明授权

US07433121B2 Projection type image display apparatus 失效
标题翻译：投影型图像显示装置
公开(公告)号：US07433121B2
公开(公告)日：2008-10-07
申请号：US11513524
申请日：2006-08-30
申请人： Daisuke Imafuku , Koji Hirata , Naoyuki Ogura
发明人： Daisuke Imafuku , Koji Hirata , Naoyuki Ogura
IPC分类号： G03B21/56
CPC分类号： G03B21/625
摘要： A screen is hung from a screen frame with hanging members bonded to the upper side of a front sheet. Supporting members are disposed on the lower side of the front sheet and, by mounting a Fresnel lens sheet on the supporting members, a tension is given by its weight to the front sheet in the vertical direction. Further, a tension in the horizontal direction is given to the front sheet. Long holes are so formed in the hanging members that the hanging members on the right and left sides of the screen by expansion or contraction of the screen are made greater in the extent of shifting in the horizontal direction than the hanging member in the central part.
摘要翻译：屏幕悬挂在屏幕框架上，悬挂构件粘结在前面板的上侧。支撑构件设置在前片的下侧，并且通过将菲涅尔透镜片安装在支撑构件上，在垂直方向上通过其对前片的重量给予张力。此外，向前片施加水平方向的张力。在悬挂构件中形成有长孔，使得屏幕的左右两侧的悬挂构件在水平方向上的移动程度比在中央部分的悬挂构件更大。

9. 发明申请

US20070229948A1 Projection type image display apparatus 失效
标题翻译：投影型图像显示装置
公开(公告)号：US20070229948A1
公开(公告)日：2007-10-04
申请号：US11513524
申请日：2006-08-30
申请人： Daisuke Imafuku , Koji Hirata , Naoyuki Ogura
发明人： Daisuke Imafuku , Koji Hirata , Naoyuki Ogura
IPC分类号： G03B21/56
CPC分类号： G03B21/625
摘要： A screen is hung from a screen frame with hanging members bonded to the upper side of a front sheet. Supporting members are disposed on the lower side of the front sheet and, by mounting a Fresnel lens sheet on the supporting members, a tension is given by its weight to the front sheet in the vertical direction. Further, a tension in the horizontal direction is given to the front sheet. Long holes are so formed in the hanging members that the hanging members on the right and left sides of the screen by expansion or contraction of the screen are made greater in the extent of shifting in the horizontal direction than the hanging member in the central part.
摘要翻译：屏幕悬挂在屏幕框架上，悬挂构件粘结在前面板的上侧。支撑构件设置在前片的下侧，并且通过将菲涅尔透镜片安装在支撑构件上，在垂直方向上通过其对前片的重量给予张力。此外，向前片施加水平方向的张力。在悬挂构件中形成有长孔，使得屏幕的左右两侧的悬挂构件在水平方向上的移动程度比在中央部分的悬挂构件更大。

10. 发明授权

US07081927B2 Optical projection apparatus, transmission type screen, and projection type image display apparatus 失效
公开(公告)号：US07081927B2
公开(公告)日：2006-07-25
申请号：US10978528
申请日：2004-11-02
申请人： Koji Hirata , Naoyuki Ogura , Masahiko Yatsu , Hidehiro Ikeda
发明人： Koji Hirata , Naoyuki Ogura , Masahiko Yatsu , Hidehiro Ikeda
IPC分类号： H04N9/31 , G02E1/135
CPC分类号： H04N9/3141 , G02B13/16 , G03B21/10 , H04N5/7441 , H04N9/3108 , H04N9/3144 , H04N9/317
摘要： An optical projection apparatus includes an optical lighting system provided with a polarized beam splitter for polarizing white light flux from a white light source and combining the white light flux with other light fluxes, thereby taking out a predetermined polarized wave; a multi-lens array consisting of a plurality of lens elements; and an irradiator for separating the white light flux into three primary color light fluxes of red, green, and blue and irradiating each of the three color light fluxes on the same display element at an angle different from the others; and a projecting lens unit used for projecting the three primary color light fluxes modulated by the display element. Color light fluxes modulated by the display element are separated in a horizontal direction of the screen of the display element when passing an injection pupil of the projection lens unit.

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