公开(公告)号：US20020149856A1

公开(公告)日：2002-10-17

申请号：US09834580

申请日：2001-04-12

发明人： Chungte W. Chen ,  Ronald G. Hegg ,  William B. King

IPC分类号： G02B003/00 ,  G02B009/00

CPC分类号： G02B27/4211 ,  G02B27/0037

摘要： An external pupil lens system (200) with an entrance pupil distance at least three times that of the effective focal length. The lens system is comprised of several conventional lenses and a diffractive optical element (DOE) for secondary chromatic aberration correction. In the illustrative embodiment, the system includes an entrance pupil (50), followed by a lens group (52) containing two refractive elements for primary color correction. Next along the optical axis is lens group (54), which contains two refractive elements for astigmatism and higher order coma correction, followed by lens group (60), which contains one refractive element (62) and one DOE (64) for secondary color correction.

摘要翻译： 入射光瞳距离为有效焦距的至少三倍的外部光瞳透镜系统（200）。 透镜系统由几个常规透镜和用于二次色差校正的衍射光学元件（DOE）组成。 在说明性实施例中，系统包括入射光瞳（50），后面是包含用于原色校正的两个折射元件的透镜组（52）。 沿着光轴的下一个是透镜组（54），其包含用于散光和高阶昏迷校正的两个折射元件，后面是透镜组（60），其包含一个折射元件（62）和一个用于次级颜色的DOE（64） 更正。

公开(公告)号：US20020141073A1

公开(公告)日：2002-10-03

申请号：US09791890

申请日：2001-02-26

申请人： ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

发明人： Takashi Enomoto

IPC分类号： G02B015/14 ,  G02B009/00 ,  G02B009/08

CPC分类号： G02B15/177

摘要： A zoom lens system including a negative first lens group, a positive second lens group, and a negative third lens group. zooming is performed by moving the first through third lens. The negative first lens group includes positive-negative cemented lens elements, and the most object-side surface thereof is a concave surface. The zoom lens system satisfies: null1

摘要翻译： 包括负第一透镜组，正第二透镜组和负第三透镜组的变焦透镜系统。 通过移动第一至第三透镜来执行变焦。 负第一透镜组包括正阴极胶合透镜元件，并且其最物体侧表面是凹面。 变焦透镜系统满足：-1

公开(公告)号：US20020141072A1

公开(公告)日：2002-10-03

申请号：US09764820

申请日：2001-01-17

发明人： Jacob Moskovich

IPC分类号： G02B003/00 ,  G02B009/00

CPC分类号： G02B13/22 ,  G02B13/04 ,  G02B13/16

摘要： Telecentric projection lenses for use with pixelized panels (PP) are provided. The projection lenses have a negative first unit (U1) which has at least one negative meniscus element (N1) having at least one aspheric surface and a positive second unit (U2) which has at least one positive element (P1) having at least one aspheric surface. The lens' aperture stop (AS) is located between the two units, and a third lens unit (U3) may be used in the vicinity of the aperture stop to improve the correction of axial color. The lenses have small forward vertex distances, small clear apertures, and long back focal lengths which make them particularly well-suited for use in the manufacture of compact projection systems.

摘要翻译： 提供了用于像素化面板（PP）的远心投影镜头。 投影透镜具有负的第一单元（U1），其具有至少一个具有至少一个非球面的负弯液面元件（N1）和具有至少一个正元件（P1）的正的第二单元（U2），所述正的第二单元具有至少一个 非球面。 透镜的孔径光阑（AS）位于两个单元之间，并且在孔径光阑附近可以使用第三透镜单元（U3），以改善轴向颜色的校正。 透镜具有小的前向顶点距离，小的透明孔径和长的后焦距，使得它们特别适合用于制造紧凑的投影系统。

公开(公告)号：US20020126397A1

公开(公告)日：2002-09-12

申请号：US10001038

申请日：2001-11-15

发明人： Makoto Fujimoto

IPC分类号： G02B009/62 ,  G02B009/00 ,  G02B009/08

CPC分类号： G02B15/177 ,  G02B27/0018 ,  G02B27/4211

摘要： An optical system includes a diffractive optical element in which a phase given to incident light from an optical axis toward the peripheral part in the radial direction is not reversed in an effective area and an absolute value of optical power on the optical axis is made minimum. In the optical system, chromatic aberration of magnification of a high order is satisfactorily corrected and flare caused by additional diffraction light (unnecessary diffraction light) is suppressed to as minimum as possible while maintaining a high imaging performance up to peripheral part of a field angle.

摘要翻译： 光学系统包括衍射光学元件，其中在有效面积中给予来自光轴的入射光朝向周向部分的相位的相位在光轴上的光功率的绝对值最小。 在光学系统中，令人满意地校正了高阶的倍率色像差，并且通过附加的衍射光（不需要的衍射光）引起的耀斑尽可能地保持最小，同时保持高的视场角的周边部分的高成像性能。

公开(公告)号：US20020097500A1

公开(公告)日：2002-07-25

申请号：US09903510

申请日：2001-07-13

发明人： Hidehiro Ikeda ,  Masahiko Yatsu ,  Koji Hirata ,  Junichi Ikoma

IPC分类号： G02B003/00 ,  G02B009/00 ,  G02B015/14

CPC分类号： G03B21/26 ,  G02B13/02

摘要： Compactness of a projection type image display apparatus is realized by achieving miniaturization and wide-angle of a projection lens apparatus while various kinds of aberration are satisfactorily compensated. A first lens group having a negative refracting power, a second lens group having a positive refracting power, and a third lens group having a positive refracting power are positioned in this order, from a screen side, toward an image display element side, in the projection lens apparatus. When f, f1, f3, f23, and fb represent, respectively, a focal length of the whole lens system, a focal length of the first lens group, a focal length of the third lens group, a combined focal length of the second and third lens groups, and a back focus of the whole lens system, the projection lens apparatus satisfies the following conditions: 1.4

摘要翻译： 投影型图像显示装置的紧凑性通过实现投影透镜装置的小型化和广角实现，同时满足各种像差的补偿。 具有负折射率的第一透镜组，具有正折射率的第二透镜组和具有正折射光焦度的第三透镜组以从屏幕侧朝向图像显示元件侧的顺序 投影透镜装置。 当f，f1，f3，f23和fb分别表示整个透镜系统的焦距，第一透镜组的焦距，第三透镜​​组的焦距，第二透镜组的焦距， 第三透镜组和整个透镜系统的后焦点，投影透镜装置满足以下条件：<段落lvl =“0”> 1.4 <| f1 | / f（1） in-line-formula> <段落lvl =“0”> 2.8 <段落lvl =“0”> 3.6 <段落lvl =“0”> 0.1 <| f1 / f23 | <0.3（4）

公开(公告)号：US20020089759A1

公开(公告)日：2002-07-11

申请号：US10024134

申请日：2001-12-21

申请人： SEIKO EPSON CORPORATION

发明人： Masashi Kitabayashi

IPC分类号： G02B003/00 ,  G02B009/00 ,  G02B027/14

CPC分类号： G02B27/1046 ,  G02B27/1073 ,  G02B27/145 ,  G02B27/149

摘要： The present invention provides a position-control device for a light modulation device, capable of easily performing a position-control operation. A position-control device is provided with a reference projection lens built therein capable of being commonly used, the reference projection lens projecting light combined by a crossed dichroic prism and forming a projection image, and having a predetermined optical characteristic. If the position of the optical axis is aligned once when the reference projection lens was built in, it is not necessary to align the optical axes every time the positions of liquid crystal panels are controlled and the replacement of the liquid crystal panels and the crossed dichroic prism is only required, whereby the position-control operation can be easily performed.

摘要翻译： 本发明提供了一种能够容易地执行位置控制操作的光调制装置的位置控制装置。 位置控制装置设置有能够被共同使用的参考投影透镜，所述参考投影透镜投射由正交二向色棱镜组合并形成投影图像并具有预定光学特性的投影光。 如果在内置基准投影透镜时将光轴的位置对准一次，则不必每次控制液晶面板的位置并且更换液晶面板和交叉二向色 仅需要棱镜，由此可以容易地执行位置控制操作。

公开(公告)号：US20020089758A1

公开(公告)日：2002-07-11

申请号：US10032093

申请日：2001-12-31

申请人： NIKON CORPORATION

发明人： Kenji Hori

IPC分类号： G02B003/00 ,  G02B007/00 ,  G02B009/00 ,  G02B011/00

CPC分类号： G02B7/02 ,  G02B3/00 ,  G02B5/00 ,  G02B7/00

摘要： If after manufacture it is found that the thickness of a solid immersion lens is less than a target thickness value, an adjustment portion is adhered thereto by vapor deposition so as to reduce the amount of thickness deficiency. If the solid immersion lens is made of quartz glass, SiO2 is used as the material which is vapor deposited. If the thickness of the solid immersion lens is greater than the target value, then it is reduced by etching.

摘要翻译： 如果制造后发现固体浸没透镜的厚度小于目标厚度值，则通过气相沉积将调节部分粘附到其上，以减少厚度不足的量。 如果固体浸没透镜由石英玻璃制成，则使用SiO 2作为气相沉积材料。 如果固体浸没透镜的厚度大于目标值，则通过蚀刻而减小。

公开(公告)号：US20020060858A1

公开(公告)日：2002-05-23

申请号：US09925890

申请日：2001-08-09

发明人： Ken Wada

IPC分类号： G02B009/00 ,  G02B009/08 ,  G02B009/60

CPC分类号： G02B15/177 ,  G02B13/16

摘要： It is an object of this invention to provide a zoom lens capable of projecting an original projection image displayed by a liquid crystal display element onto a screen surface with high optical performance, and an image projection apparatus using the zoom lens. A zoom lens includes a first lens unit having negative refractive power, a second lens unit having positive refractive power, a stop, a third lens unit having negative refractive power, a fourth lens unit having negative refractive power, and a fifth lens unit having positive refractive power, which are sequentially arranged from the enlargement side and having one or a plurality of lenses. When the magnification is to be changed from the wide angle end to the telephoto end, the second, third, and fourth lens units and the stop move.

摘要翻译： 本发明的目的是提供一种能够将由液晶显示元件显示的原始投影图像投射到具有高光学性能的屏幕表面上的变焦透镜，以及使用该变焦透镜的图像投影装置。 变焦透镜包括具有负屈光力的第一透镜单元，具有正屈光力的第二透镜单元，具有负屈光力的第二透镜单元，具有负屈光力的第三透镜单元，具有负折光力的第四透镜单元，以及具有正折射力的第五透镜单元 折射力，其从放大侧依次布置并具有一个或多个透镜。 当放大倍率从广角端到望远端变化时，第二，第三和第四透镜单元和停止移动。

公开(公告)号：US20020057504A1

公开(公告)日：2002-05-16

申请号：US09790661

申请日：2001-02-23

发明人： Chuan-Te Cheng

IPC分类号： G02B009/00 ,  G02B009/08 ,  G02B003/00

CPC分类号： G02B26/0841 ,  H04N5/7458

摘要： An optical device for eliminating the stray light is provided at a stop of an illuminating system in an optical system of nulldigital light processingnull (DLP). The optical system consists of a stop of an illuminating system, a nulldigital micromirror devicenull (DMD), a stop of a projection lens, and a screen while the stray light is a chromatic halo at the peripheral area on the screen. Wherein, the optical device includes a reflecting mirror designed of an adjustable angle and installed near periphery of the stop of the illuminating system. The chromatic halo is generated from the light beam at the periphery area. And, the light beam is reflected from the DMD and is transmitted into the stop of the projection lens, and then is projected on the screen. And, the reflecting mirror is used to reflect the light beam at the periphery area so as to divert the original transmitting path of the light beam such that the light beam is reflected from the DMD and is uniformly transmitted into the stop of the projection lens. Thus, the contrast ratio of the illuminating system is increased, and the quality of the output image is improved, and the efficiency of the DLP system is enhanced, and the luminance projected on the screen is improved.

摘要翻译： 在“数字光处理”（DLP）的光学系统中，在照明系统的停止处设置用于消除杂散光的光学装置。 光学系统包括照明系统的停止，“数字微镜装置”（DMD），投影透镜的停止和屏幕，而杂散光是屏幕周边区域的彩色光晕。 其中，光学装置包括设计成可调角度的反射镜，并安装在照明系统的停止点的周围。 彩色光晕是从周边区域的光束产生的。 并且，光束从DMD反射并被传送到投影透镜的停止点，然后投影到屏幕上。 并且，反射镜用于将光束反射到周边区域，以便将原始的光束传播路径转移，使得光束从DMD反射并均匀地传输到投影透镜的光阑中。 因此，照明系统的对比度增加，并且提高了输出图像的质量，并且提高了DLP系统的效率，并且提高了投影在屏幕上的亮度。

公开(公告)号：US20020039240A1

公开(公告)日：2002-04-04

申请号：US09951861

申请日：2001-09-13

申请人： U.S. Philips Corporation

发明人： Tewe Hiepke Heemstra ,  Geert Jan Van Der Meer

IPC分类号： G02B009/00 ,  G02B009/08

CPC分类号： B23K26/0643 ,  B23K26/0648 ,  B23K26/0652 ,  B23K26/0665 ,  B23K26/0732 ,  H01J9/2274 ,  Y10S359/90

摘要： A photosensitive layer of or for a cathode ray tube is illuminated by means of a laser illumination arrangement. The laser illumination arrangement comprises a homogenizer which serves to reduce the coherence of the laser beam.