公开(公告)号：US5041851A

公开(公告)日：1991-08-20

申请号：US454568

申请日：1989-12-21

申请人： William E. Nelson

发明人： William E. Nelson

IPC分类号： B41J2/44 ,  G03G15/04 ,  G03G15/32 ,  H01L21/302 ,  H01L21/3065 ,  H04N1/036 ,  H04N1/23

CPC分类号： G03G15/326 ,  B41J2/44 ,  B41J2/465 ,  G03G15/043

摘要： A printing system and method which uses an unmodulated light focused on a spatial light modulator (SLM) device. The light modulator device, in one embodiment, can be a deformable set of mirrors monolithically integrated onto a semiconductor substrate which act, under control of data signals, to selectively modulate light onto a focusing lens which in turn images the light to the drum of the xerographic printing process. The deformable mirrors are formed in one or more parallel rows and the selective timing of the rows is controllable in order to compensate for variations in xerographic process speed. A stepped light baffle removes the unmodulated light further enhancing the dark field effect.

公开(公告)号：US06804401B2

公开(公告)日：2004-10-12

申请号：US09727733

申请日：2000-12-04

申请人： William E. Nelson ,  James M. Sweet ,  Remo J. D'Ortenzio

发明人： William E. Nelson ,  James M. Sweet ,  Remo J. D'Ortenzio

IPC分类号： G06K936

CPC分类号： G06T9/00 ,  H04N1/3333 ,  H04N1/41 ,  H04N2201/33357

摘要： A method for digital image compression of a raster image is disclosed which uses different compression methods for selected parts of the image and which dynamically adjusts compression and segmentation parameters to control tradeoff of image quality and compression. The image is encoded into a single data stream for efficient handling by disk, memory and I/O systems. This system provides a stable feedback loop that manages to a fine granularity (typically 8×8 pixel blocks) the compression of image data so as to be compliant with a plurality of compression constraints; the management of an incremental bias toward more aggressive compression that selectively applies the more aggressive compression methods to blocks that are the most tolerant with respect to visible artifacts; and the adjustable segmentation and compression parameters used to control the image compression.

摘要翻译： 公开了一种用于光栅图像的数字图像压缩的方法，其对图像的所选部分使用不同的压缩方法，并且其动态地调整压缩和分割参数以控制图像质量和压缩的权衡。 图像被编码成单个数据流，以便由磁盘，存储器和I / O系统进行有效的处理。 该系统提供稳定的反馈回路，其对图像数据的压缩进行精细粒度（通常为8×8像素块），以便符合多个压缩约束; 对更积极的压缩的增量偏倚的管理，其选择性地将更积极的压缩方法应用于对于可见伪像是最宽容的块; 以及用于控制图像压缩的可调分割和压缩参数。

公开(公告)号：US06583921B2

公开(公告)日：2003-06-24

申请号：US09745330

申请日：2000-12-21

申请人： William E. Nelson

发明人： William E. Nelson

IPC分类号： G02B2600

CPC分类号： B81B3/0051 ,  B81B2201/042 ,  B81C1/00976 ,  G02B26/0841

摘要： A new non-contacting, edge-coupled micromechanical device and method, requiring no contact between the mirror or underlying yoke and landing pads on the substrate. Elimination of physical contact eliminates the problem of “sticking” mirrors found in conventional devices, and simplifies the manufacturing process by reducing the requirements for passivation coatings and hermetic packages. A capture electrode 24 is provided at an appropriate elevation above the surface of the device so as to be in close proximity with the edge of the mirror 20 or yoke 22 when it rotates to the desired angle. The capture electrode 24 and mirror assembly are biased to establish a very high electrostatic attraction between the two which stops the mirror. The mirror can be critically damped to prevent oscillations of the mirrors by tailoring at least one of the voltages applied to the mirror and capture electrode.

摘要翻译： 一种新的非接触式边缘耦合微机械装置和方法，不需要反射镜或下面的轭和衬底上的着陆焊盘之间的接触。 消除物理接触消除了常规设备中发现的“粘附”镜子的问题，并且通过减少对钝化涂层和密封包装的要求来简化制造过程。 捕获电极24设置在设备表面上方的适当高度处，以便当其旋转到期望的角度时，捕获电极24紧邻反射镜20或轭22的边缘。 捕获电极24和反射镜组件被偏置以在两者之间建立非常高的静电吸引力，从而停止反射镜。 可以通过调整施加到反射镜和捕获电极的电压中的至少一个来防止反射镜的振荡。

公开(公告)号：US6011631A

公开(公告)日：2000-01-04

申请号：US791061

申请日：1997-01-29

申请人： Dirk K. Broddin ,  Frank A. Deschuytere ,  Robert F. Janssens ,  William E. Nelson ,  Vadlamannati Venkateswar

发明人： Dirk K. Broddin ,  Frank A. Deschuytere ,  Robert F. Janssens ,  William E. Nelson ,  Vadlamannati Venkateswar

IPC分类号： G03G15/00 ,  H04N1/407 ,  G02B26/08 ,  B41J2/435 ,  G02F1/00

CPC分类号： H04N1/407 ,  G03G15/5037 ,  G03G2215/00042

摘要： In classic optical rendering systems, the spot, illuminating a microdot on the photosensitive medium, is designed to overlap with neighboring microdots, typically having an overlap of 1.7 times the pitch of the microdots, for a luminous intensity of 1/e.sup.2 the highest intensity. A "sharp" photosensitive medium, such as a photographic film used in graphical applications, generates a binary circle, obtainable by thresholding. The area of such a circle is too large, which results in higher dot gain.Many systems, such as electrographic systems, do not behave as a "sharp" medium. If intermediate energy levels are used, in order to obtain continuous tone or multiple density levels, thresholding behavior may be avoided by appropriate choice of energy levels. Such a different sensitometry results in specific requirements for the energy distribution for each microdot.A square shaped uniform energy distribution within the space allotted to each microdot, allows for multiple density levels, without severe sensitometric requirements.

摘要翻译： 在经典的光学渲染系统中，照射光敏介质上的微点的点被设计为与相邻的微点重叠，通常具有1.7倍于微点的间距的重叠，对于最高强度的1 / e2的发光强度。 诸如在图形应用中使用的摄影胶片的“锋利”感光介质产生可通过阈值获得的二进制圆。 这种圆的面积太大，这导致更高的网点增益。 许多系统，如电子照相系统，不表现为“尖锐”的媒介。 如果使用中间能量级别，为了获得连续色调或多重密度水平，可以通过适当选择能量水平来避免阈值行为。 这种不同的感光度导致对于每个微点的能量分布的特定要求。 在分配给每个微点的空间内的方形均匀能量分布允许多个密度水平，而没有严格的感光度要求。

公开(公告)号：US5696549A

公开(公告)日：1997-12-09

申请号：US474230

申请日：1995-06-07

申请人： William E. Nelson

发明人： William E. Nelson

IPC分类号： B41J2/465 ,  B41J2/52 ,  G06K15/12 ,  H04N1/04 ,  H04N1/19 ,  H04N1/40 ,  B41J2/47

CPC分类号： H04N1/40031 ,  B41J2/465 ,  B41J2/52 ,  G06K15/1257 ,  H04N1/00015 ,  H04N1/00031 ,  H04N1/00047 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00082 ,  H04N1/04 ,  H04N1/40025 ,  H04N1/19 ,  H04N2201/0458

摘要： Higher quality printing is difficult in implementation in spatial light modulator printers. The two major problems are accomplishing gray scale within the line time constraints, and eliminating staircasing artifacts within the images printed (81). It can be improved by using an alternate way of resetting cells on the spatial light modulator when data is being loaded onto the cells, timing delay (86), horizontal offset (84), and differently sized pixels (80, 82).

摘要翻译： 在空间光调制器打印机中实现更高质量的打印是困难的。 两个主要问题是在线路时间限制内实现灰度级，并消除了印刷图像中的阶梯伪影（81）。 当数据被加载到单元，定时延迟（86），水平偏移（84）和不同大小的像素（80,82）时，可以通过使用在空间光调制器上复位单元的替代方式来改进。

公开(公告)号：US5672464A

公开(公告)日：1997-09-30

申请号：US478159

申请日：1995-06-07

申请人： William E. Nelson

发明人： William E. Nelson

IPC分类号： G03F7/20 ,  H01L21/027 ,  H01L21/30 ,  H05K3/00

CPC分类号： G03F7/70283 ,  G03F7/2057 ,  G03F7/70291 ,  H05K3/0082

摘要： A device for patterning an imaging member (46) is provided. The device comprises a light source (24) which emits light rays (26). Light rays (26) pass through a collimator lens (28) to collimate the light rays (30). The light then strikes a spatial light modulator (32) which is controlled by a computer (40) to reflect the light (42). The light passes through an imaging lens (44) to magnify the pattern for striking imaging member (46). Imaging member (46) is thus patterned by changing modulator (32) by computer (40).

摘要翻译： 提供了用于图案化成像构件（46）的装置。 该装置包括发射光线（26）的光源（24）。 光线（26）穿过准直透镜（28）以准直光线（30）。 然后光照射由计算机（40）控制以反射光（42）的空间光调制器（32）。 光通过成像透镜（44）以放大用于撞击成像构件（46）的图案。 因此，通过用计算机（40）改变调制器（32），成像构件（46）被图案化。

公开(公告)号：US5523193A

公开(公告)日：1996-06-04

申请号：US361007

申请日：1994-12-21

申请人： William E. Nelson

发明人： William E. Nelson

IPC分类号： G03F7/20

CPC分类号： G03F7/70283 ,  G03F7/70291

摘要： A device (40) for patterning an imaging member (46) is provided. The device (40) comprises a light source (42) which emits light rays (44). Light rays (44) pass through a collimator (45) to collimate the light rays (48). The light then strikes a spatial light modulator (50) which is controlled by a computer (52) to reflect the light (54). The light passes through an imaging member (56) to demagnify the pattern for striking imaging member (46). Imaging member (46) is thus patterned by changing modulator (50) by computer (52).

摘要翻译： 提供了用于对成像构件（46）进行图案化的装置（40）。 装置（40）包括发射光线（44）的光源（42）。 光线（44）穿过准直器（45）以准直光线（48）。 然后光照射由计算机（52）控制以反射光（54）的空间光调制器（50）。 光通过成像构件（56）以缩小用于撞击成像构件（46）的图案。 因此，通过用计算机（52）改变调制器（50），成像构件（46）被图案化。

公开(公告)号：US5482818A

公开(公告)日：1996-01-09

申请号：US242926

申请日：1994-05-16

申请人： William E. Nelson

发明人： William E. Nelson

IPC分类号： G03F7/20 ,  H01L21/027 ,  H01L21/30 ,  H05K3/00

CPC分类号： G03F7/70283 ,  G03F7/2057 ,  G03F7/70291 ,  H05K3/0082

摘要： A device for patterning an imaging member (46) is provided. The device comprises a light source (24) which emits light rays (26). Light rays (26) pass through a collimator lens (28) to collimate the light rays (30). The light then strikes a spatial light modulator (32) which is controlled by a computer (40) to reflect the light (42). The light passes through an imaging lens (44) to magnify the pattern for striking imaging member (46). Imaging member (46) is thus patterned by changing modulator (32) by computer (40).

摘要翻译： 提供了用于图案化成像构件（46）的装置。 该装置包括发射光线（26）的光源（24）。 光线（26）穿过准直透镜（28）以准直光线（30）。 然后光照射由计算机（40）控制以反射光（42）的空间光调制器（32）。 光通过成像透镜（44）以放大用于撞击成像构件（46）的图案。 因此，通过用计算机（40）改变调制器（32），成像构件（46）被图案化。

公开(公告)号：US5461411A

公开(公告)日：1995-10-24

申请号：US38398

申请日：1993-03-29

申请人： James M. Florence ,  William E. Nelson ,  Vadlammanti Venkateswar ,  James St. Clair ,  Dirk Broddin ,  Serge M. F. Tavernier

发明人： James M. Florence ,  William E. Nelson ,  Vadlammanti Venkateswar ,  James St. Clair ,  Dirk Broddin ,  Serge M. F. Tavernier

IPC分类号： B41J2/52 ,  B41J2/445 ,  G02F3/00 ,  H01S3/10 ,  H04N1/195 ,  H04N1/40 ,  H04N1/405 ,  H04N1/21

CPC分类号： H04N1/40031 ,  H04N1/195

摘要： Techniques for achieving high resolution, high-speed gray scale printing with binary spatial light modulators. A spatial light modulator array is divided into subarrays, and the subarrays are illuminated at various levels (510, 512, 514, 516) of a modulated light source. Additionally, each pixel (520) can be divided up into four phases and printed in phase pairs.

摘要翻译： 用二进制空间光调制器实现高分辨率高速灰度打印的技术。 空间光调制器阵列被划分为子阵列，并且子阵列在调制光源的各个等级（510,512,514,516）处被照射。 此外，每个像素（520）可以分成四个相位并以相位对印刷。

公开(公告)号：US5392151A

公开(公告)日：1995-02-21

申请号：US267321

申请日：1994-06-28

申请人： William E. Nelson

发明人： William E. Nelson

IPC分类号： G02B26/08 ,  G09F9/37

CPC分类号： G02B26/0841 ,  G09F9/372

摘要： The method disclosed comprises the steps of directing light to a plurality of modulators where each modulator comprises a mirror rotatably fixed to at least two support members displaced from all outer edges of the mirror and an electrode for rotating the mirror, selecting an angle through which the mirror is to rotate, generating a signal characteristic of the angle, applying the characteristic signal to the electrode, and rotating the mirror through the selected angle.

摘要翻译： 所公开的方法包括以下步骤：将光引导到多个调制器，其中每个调制器包括可旋转地固定到从镜子的所有外边缘移位的至少两个支撑构件的反光镜和用于旋转镜子的电极， 镜子旋转，产生角度的信号特征，将特征信号施加到电极，并且通过所选择的角度旋转镜子。