-
51.发明授权Phase-noise type broad spectral bandwidth optical low-pass anti-aliasing filter 失效相位噪声类型宽谱带宽光学低通抗混叠滤波器
公开(公告)号：US06040857A
公开(公告)日：2000-03-21
申请号：US863648
申请日：1997-05-27
CPC分类号： G02B27/46 , G02B5/1871
摘要： A device is described for a very low cost anti-aliasing filter to be used to suppress aliasing artifacts present in discretely sampled solid-state electronic imaging devices. This device includes a transparent substrate upon which a multiplicity of transparent phase spots are placed. The diameter and thickness of the transparent phase spots are designed in such a way to cause just the right amount of blurring to suppress the aliasing artifacts, yet render a reasonable sharp image for spatial frequencies below the sampling frequency of the imager. This suppression is further accomplished over a broad spectral range. The phase noise filter thus formed can be placed either in object space or in image space.
摘要翻译： 描述了一种用于非常低成本的抗混叠滤波器的装置，用于抑制存在于离散采样的固态电子成像装置中的混叠伪影。 该装置包括透明基板，多个透明相位点放置在该透明基板上。 透明相位点的直径和厚度被设计成仅仅产生适当的模糊量来抑制混叠伪影，而对于低于成像器的采样频率的空间频率，给出合理的清晰图像。 在宽光谱范围内进一步完成了抑制。 这样形成的相位噪声滤波器可以放置在物体空间或图像空间中。
-
公开(公告)号：US6008914A
公开(公告)日：1999-12-28
申请号：US935161
申请日：1997-09-22
申请人： Tomohiro Sasagawa , Kenyu Haruta , Yukio Sato , Hitoshi Wakata, deceased , Mitsuo Inoue , Akihiro Suzuki , Shuichi Fujikawa , Yoshio Saito
发明人： Tomohiro Sasagawa , Kenyu Haruta , Yukio Sato , Hitoshi Wakata, deceased , Mitsuo Inoue , Akihiro Suzuki , Shuichi Fujikawa , Yoshio Saito
CPC分类号： G03H1/0005 , B23K26/0604 , B23K26/066 , B23K26/067 , B23K26/386 , G03H1/08 , G03H1/16 , G03H2001/0094
摘要： The laser transfer machining apparatus comprises a shaping unit for shaping the laser beam so that the laser beam has a beam pattern which corresponds to a desired pattern to be machined in the object to be machined and a generating unit disposed separately from the shaping unit for simultaneously generating a plurality of laser beams each having the beam pattern from the laser beam shaped by the shaping unit. The generating unit is adapted to emit the plural laser beams while simultaneously defining a plurality of radiation directions of the generated plural laser beams to the object to be machined. The laser transfer machining apparatus can provide a high efficiency of utilization of light and reduce the time required for machining. Furthermore, the laser transfer machining apparatus can utilize a laser with a relatively low spatially coherence such as an eximer laser.
摘要翻译： 激光传递加工装置包括：成形单元，用于使激光束成形，使得激光束具有对应于待加工物体中要加工的期望图案的光束图案;以及与成形单元分开设置的发生单元，用于同时 产生多个激光束，每个激光束具有来自由成形单元成形的激光束的光束图案。 发生单元适于发射多个激光束，同时将所生成的多个激光束的多个辐射方向限定到待加工物体。 激光转印加工装置可以提供高效率的光利用并减少加工所需的时间。 此外，激光转印加工装置可以利用具有较低空间相干性的激光器，例如准分子激光器。
-
公开(公告)号：US5970168A
公开(公告)日：1999-10-19
申请号：US906021
申请日：1997-08-05
CPC分类号： G01N21/95623 , H01L22/12 , H01L2924/0002
摘要： The present invention resides in a Fourier filter to detect defects on semiconductor wafers. The present invention relates to a Fourier filter to detect defects on semiconductor wafers which is less susceptible to having the filter output affected by vibrations and which avoids the physical contact from conventional damping.
摘要翻译： 本发明在于用于检测半导体晶片上的缺陷的傅立叶滤波器。 本发明涉及一种用于检测半导体晶片上的缺陷的傅立叶滤波器，其较不易受到振动影响的滤波器输出，并且避免了常规阻尼的物理接触。
-
54.发明授权Method and apparatus of Fourier manipulation in an optic lens or mirror train 失效光学镜片或镜子列车中傅立叶操纵的方法和装置
公开(公告)号：US5959776A
公开(公告)日：1999-09-28
申请号：US756662
申请日：1996-11-26
申请人： Nicholas F. Pasch
发明人： Nicholas F. Pasch
CPC分类号： G02B27/46
摘要： An optical system is provided with an adaptable window element at a Fourier plane for spatial filtering. Having a window element made up of individually addressable pixels provides a substantial improvement in the spatial filtering adaptability and precision. When combined with a computer and sensor, the window may become part of a negative feedback loop, thereby providing the optical system with more consistent reproducibility, higher reliability with graceful degradation, and more precise control over final results.
摘要翻译： 光学系统在用于空间滤波的傅立叶平面处设置有适应性窗口元件。 具有由单独可寻址像素构成的窗口元素提供了空间滤波适应性和精度的显着改进。 当与计算机和传感器组合时，窗口可能成为负反馈回路的一部分，从而为光学系统提供更一致的重现性，更高的可靠性和优雅的降级，以及对最终结果的更精确控制。
-
55.发明授权Imager including a solid state imaging device with optical low pass filter 失效包括具有光学低通滤波器的固态成像装置的成像仪
公开(公告)号：US5940127A
公开(公告)日：1999-08-17
申请号：US705222
申请日：1996-08-29
申请人： Ken Nakajima
发明人： Ken Nakajima
CPC分类号： H04N5/2254 , G02B27/46
摘要： An imager with which it is possible to reduce the aliasing noise effectively. An imaging light from an object is condensed by an optical system 1 so as to fall on an optical low-pass filter 2. The optical low-pass filter 2 has trap points corresponding to zero values of the MTF characteristics on two points of 1/2 and 1 of the spatial sampling frequency on horizontal and vertical MTF characteristics, and reduces components less than one-half the spatial sampling frequency as determined by the arraying of the light receiving elements of a CCD 4 of the imaging light. The CCD 4 receives the imaging light, the spatial frequency of which has been suppressed by the spatial low-pass filter 2, and outputs an imaging light.
摘要翻译： 可以有效降低混叠噪声的成像器。 来自物体的成像光由光学系统1会聚，以落在光学低通滤波器2上。光学低通滤波器2具有对应于+ E的两点上的MTF特性的零值的陷阱点 ，1/2 + EE和1的水平和垂直MTF特性的空间采样频率，并且减少小于空间采样频率的一半的分量，如通过成像的CCD 4的光接收元件的排列所确定的 光。 CCD4接收其空间频率被空间低通滤波器2抑制的成像光，并输出成像光。
-
公开(公告)号：US5872654A
公开(公告)日：1999-02-16
申请号：US652349
申请日：1996-05-23
申请人： Yoshiki Shirochi
发明人： Yoshiki Shirochi
IPC分类号： G02F1/13 , G02B27/46 , G02F1/133 , G02F1/1335 , G09G3/36 , H04N5/66 , H04N5/72 , H04N9/12 , H04N9/30 , G02B5/18 , G09G3/00
CPC分类号： G02F1/133504 , G02B27/46 , H04N5/72 , H04N9/12 , G09G3/3607 , H04N5/66
摘要： A picture display apparatus is provided with a display device having pixels disposed in a mosaic pattern. A plurality of optical filter surfaces are respectively placed between the display device and a viewer so that both surfaces can be overlapped with each other. Each pixel in the display device is diffracted or refracted by both surfaces to become a plurality of pixels. For each optical filter surface, an element for diffusion such as a diffraction grating and an element for refraction such as a prism can be utilized for the diffraction and refraction.
摘要翻译： 图像显示装置设置有具有以马赛克图案设置的像素的显示装置。 多个滤光器表面分别放置在显示设备和观看者之间，使得两个表面可以彼此重叠。 显示装置中的每个像素由两个表面衍射或折射成为多个像素。 对于每个滤光器表面，可以使用诸如衍射光栅的扩散元件和诸如棱镜的折射元件用于衍射和折射。
-
57.发明授权
公开(公告)号：US5864430A
公开(公告)日：1999-01-26
申请号：US711783
申请日：1996-09-10
CPC分类号： G02B27/09 , B23K26/073 , G02B27/0927 , G02B27/0955 , H01S3/005
摘要： A method and apparatus maps a Gaussian beam into a beam with a uniform irradiance profile by exploiting the Fourier transform properties of lenses. A phase element imparts a design phase onto an input beam and the output optical field from a lens is then the Fourier transform of the input beam and the phase function from the phase element. The phase element is selected in accordance with a dimensionless parameter which is dependent upon the radius of the incoming beam, the desired spot shape, the focal length of the lens and the wavelength of the input beam. This dimensionless parameter can also be used to evaluate the quality of a system. In order to control the radius of the incoming beam, optics such as a telescope can be employed. The size of the target spot and the focal length can be altered by exchanging the transform lens, but the dimensionless parameter will remain the same. The quality of the system, and hence the value of the dimensionless parameter, can be altered by exchanging the phase element. The dimensionless parameter provides design guidance, system evaluation, and indication as to how to improve a given system.
摘要翻译： 方法和装置通过利用透镜的傅里叶变换特性将高斯光束映射成具有均匀辐照度分布的光束。 相位元件将设计阶段赋予输入光束，并且来自透镜的输出光场是相位元件的输入光束的傅立叶变换和相位函数。 相位元件根据取决于入射光束的半径，所需光斑形状，透镜的焦距和输入光束的波长的无量纲参数来选择。 该无量纲参数也可用于评估系统的质量。 为了控制入射光束的半径，可以使用诸如望远镜的光学器件。 可以通过交换变换透镜来改变目标点的尺寸和焦距，但是无量纲参数将保持不变。 可以通过交换相位元件来改变系统的质量，并因此改变无量纲参数的值。 无量纲参数提供了如何改进给定系统的设计指导，系统评估和指示。
-
公开(公告)号：US5828491A
公开(公告)日：1998-10-27
申请号：US777680
申请日：1996-12-20
申请人： Bill Neuman , John Honig , Lloyd Hackel , C. Brent Dane , Shamasundar Dixit
发明人： Bill Neuman , John Honig , Lloyd Hackel , C. Brent Dane , Shamasundar Dixit
CPC分类号： G11B5/8404 , G02B5/1871
摘要： An advanced design for a phase plate enables the distribution of spots in arbitrarily shaped patterns with very high uniformity and with a continuously or near-continuously varying phase pattern. A continuous phase pattern eliminates large phase jumps typically expected in a grating that provides arbitrary shapes. Large phase jumps increase scattered light outside of the desired pattern, reduce efficiency and can make the grating difficult to manufacture. When manufacturing capabilities preclude producing a fully continuous grating, the present design can be easily adapted to minimize manufacturing errors and maintain high efficiencies. This continuous grating is significantly more efficient than previously described Dammann gratings, offers much more flexibility in generating spot patterns and is easier to manufacture and replicate than a multi-level phase grating.
摘要翻译： 相位板的先进设计使得能够以非常高的均匀性和连续或接近连续变化的相位图案在任意形状的图案中分布斑点。 连续相位模式消除了在提供任意形状的光栅中通常期望的大相位跳变。 大相位跳跃增加了所需图案之外的散射光，降低了效率，并可能使光栅难以制造。 当制造能力排除产生完全连续的光栅时，本设计可以容易地适应于最小化制造误差并保持高效率。 这种连续光栅比以前描述的Dammann光栅显着更有效，提供了比多级相位光栅更容易制造和复制的斑点图案的灵活性。
-
公开(公告)号：US5820779A
公开(公告)日：1998-10-13
申请号：US538965
申请日：1995-10-05
申请人： Masuhiro Shouji , Takeo Ogihara , Hiroki Katono , Teruo Sakagami , Hiroshi Hasebe , Haruyoshi Takatu
发明人： Masuhiro Shouji , Takeo Ogihara , Hiroki Katono , Teruo Sakagami , Hiroshi Hasebe , Haruyoshi Takatu
CPC分类号： G02B27/46 , G02B5/3083 , Y10T428/1036 , Y10T428/1041
摘要： A polymeric optical low-pass filter of the birefringent type is provided which is lightweight and small, and which can be easily produced. Also provided are a polymeric optical low-pass filter device including the polymeric optical low-pass filter; and a composite optical filter including the polymeric optical low-pass filter. The optical low-pass filter comprises an optically anisotropic polymer film in which the displacement distance S between the ordinary ray and the extraordinary ray represented by the following formula is 1-70 .mu.m: S={(b.sup.2 -a.sup.2)/2c.sup.2 }.multidot.sin 2.phi.e, wherein a=1/n.sub.e, b=1/n.sub.0, c.sup.2 =a.sup.2 sin.sup.2 .phi.+b.sup.2 cos.sup.2 .phi., n.sub.e is the extraordinary-ray refractive index, n.sub.0 is the ordinary-ray refractive index, .phi. is the angle formed between the normal at the plane of incidence of light from a subject and the optic axis of the polymer film, and e is the thickness of the polymer film.
摘要翻译： 提供了双折射型的聚合物光学低通滤波器，其重量轻且小，并且可以容易地制造。 还提供了包括聚合物光学低通滤波器的聚合物光学低通滤波器装置; 以及包括聚合物光学低通滤波器的复合光学滤波器。 光学低通滤光器包括光学各向异性聚合物膜，其中普通光线和由下式表示的非凡光线之间的位移距离S为1-70μm：S = {（b2-a2）/ 2c2} xsin 2 phi，其中a = 1 / ne，b = 1 / n0，c2 = a2 sin2 phi + b2 cos2 phi，ne是非常规折射率，n0是普通光线折射率，phi是形成的角度 在来自受试者的光的入射平面上的法线与聚合物膜的光轴之间，e是聚合物膜的厚度。
-
公开(公告)号：US5755501A
公开(公告)日：1998-05-26
申请号：US519167
申请日：1995-08-25
申请人： Masayuki Shinohara , Shigeru Aoyama
发明人： Masayuki Shinohara , Shigeru Aoyama
IPC分类号： G02B5/18 , G02B27/46 , G02F1/1335 , G03B21/14
CPC分类号： G02B5/1866 , G02B27/46 , G02F1/133504
摘要： An image display device is so adapted as to eliminate image roughness while the resolution of the image is kept as high as possible. The image display device includes an image display body having a plurality of pixels arranged periodically in two dimensions and an optical low-pass filter placed on the front surface of the image display body. The spatial frequency of the initial minimum value of an modulation transfer function in one direction of the optical low-pass filter is decided by two basic frequency vectors M, N for sampling frequencies determined by the arrangement of pixels in the image display body, and the spatial frequency of the initial minimum value of the modulation transfer function in the other direction of the optical low-pass filter is decided by differences .+-.(N-M) between the basic frequency vectors.
摘要翻译： 图像显示装置适于在图像的分辨率保持尽可能高的同时消除图像粗糙度。 图像显示装置包括具有二维周期性排列的多个像素的图像显示体和位于图像显示体的前表面上的光学低通滤波器。 光学低通滤波器的一个方向上的调制传递函数的初始最小值的空间频率由用于由图像显示体中的像素排列确定的采样频率的两个基本频率矢量M，N决定， 在光学低通滤波器的另一方向上的调制传递函数的初始最小值的空间频率由基本频率矢量之间的差+/-（NM）决定。
-
-
-
-
-
-
-
-
-
搜索结果
784 条记录 (耗时 0.026 秒)
