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公开(公告)号：US5162929A
公开(公告)日：1992-11-10
申请号：US726413
申请日：1991-07-05
CPC分类号： G02B7/182 , G02B26/106
摘要： A three-color laser scanner using a holographically-generated plane linear grating disk (hologon). The disk includes peripherally-arranged facets having identical multiplexed diffraction gratings. Each multiplexed grating is formed from plural superimposed interference patterns accumulated by multiple exposures to light from a single monochromatic laser beam source. The multiplexed grating is optimized to diffract certain light wavelengths in a single, multichromatic (plural wavelength) input laser beam. The diffracted output beam comprises respective wavelength beam components that simultaneously scan in collinear fashion. Modulation of the plural wavelength components in the incident beam allows the output beam to scan expose a multicolor image at the image plane.
摘要翻译： 使用全息产生的平面线性光栅盘（hologon）的三色激光扫描仪。 盘包括具有相同多路复用衍射光栅的外围排列的刻面。 每个复用的光栅由多次叠加的干涉图形形成，这些叠加的干涉图案是通过对来自单个单色激光束源的光进行多次曝光而积 多路复用光栅被优化以在单个多色（多波长）输入激光束中衍射某些光波长。 衍射输出光束包括以共线方式同时扫描的各波长光束分量。 入射光束中的多个波长分量的调制允许输出光束扫描在图像平面上曝光多色图像。
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2.发明授权
公开(公告)号：US5026133A
公开(公告)日：1991-06-25
申请号：US517133
申请日：1990-05-01
CPC分类号： H04N1/0607 , G02B26/10 , H04N1/0635 , H04N1/0678
摘要： A large format laser scanning system is disclosed that incorporates a compact, wobble free and wavelength insensitive scanning mechanism. The scanning mechanism includes a pentaprism and lens mounted on a rotating frame assembly that is located within a scanning drum. Multiple light beams generated by a light source are passed through the rotating pentaprism and lens to scan a photosensitive medium located on the interior surface of the scanning drum.
摘要翻译： 公开了一种大幅面激光扫描系统，其包括紧凑，无摇摆和波长不敏感的扫描机构。 扫描机构包括安装在位于扫描鼓内的旋转框架组件上的五棱镜和透镜。 由光源产生的多个光束通过旋转的五棱镜和透镜，以扫描位于扫描鼓的内表面上的感光介质。
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公开(公告)号：US5018808A
公开(公告)日：1991-05-28
申请号：US457128
申请日：1969-12-26
申请人： Mark M. Meyers , James K. Lee , Badhri Narayan , James E. Roddy
发明人： Mark M. Meyers , James K. Lee , Badhri Narayan , James E. Roddy
CPC分类号： G06K15/1219 , B41J2/471 , H04N1/0473 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04712 , H04N2201/0476
摘要： A method and apparatus is provided for line scanning a beam receiving member, wherein a scanning beam is angularly or laterally displaced to compensate for scan line spacing error. The beam is displaced according to error arising from variation (flutter) in the relative motion of the beam and the beam receiving member, or according to error arising from movement of the receiving member while the scanning beam travels to a start of scan position, or both. Embodiments of beam displacement means include a refracting tilt plate, a reflecting tilt plate, a diffracting tilt plate, and a tilt prism.
摘要翻译： 提供了一种用于线束扫描光束接收部件的方法和装置，其中扫描光束被角度或横向移位以补偿扫描线间隔误差。 光束根据在光束和光束接收部件的相对运动中的变化（颤动）产生的误差，或者根据由扫描光束传播到扫描位置的开始时由接收部件移动引起的误差而移位，或 都。 光束位移装置的实施例包括折射倾斜板，反射倾斜板，衍射倾斜板和倾斜棱镜。
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公开(公告)号：US5018813A
公开(公告)日：1991-05-28
申请号：US517134
申请日：1990-05-01
申请人： James E. Roddy , Badhri Narayan
发明人： James E. Roddy , Badhri Narayan
CPC分类号： H04N1/0678 , B41J2/471 , G02F1/3132 , H04N1/0607 , H04N1/1265 , H04N1/1911
摘要： A multichannel integrated optics modulator is disclosed that generates one or more independently modulated scanning beams. The integrated optics modulator includes at least one waveguide channel provided on an electro-optic substrate, wherein the waveguide channel is divided into a write waveguide channel that extends to an output side of the substrate and a dead-end waveguide channel that terminates before reaching the output side of the substrate. Control signals are selectively applied to electrodes provided above the dead-end waveguide channel and the write waveguide channel to control the coupling of light from the write waveguide channel to the dead-end waveguide channel. Light is coupled out of the dead-end waveguide channel through the use of an absorber located above an end region of the dead-end channel. The integrated optics modulator is incorporated in a variety of scanner mechanisms.
摘要翻译： 公开了一种多通道集成光学调制器，其产生一个或多个独立调制的扫描光束。 所述集成光学调制器包括设置在电光基板上的至少一个波导通道，其中所述波导通道被分成延伸到所述基板的输出侧的写入波导通道和在到达所述基板之前终止的死端波导通道 输出侧。 选择性地将控制信号施加到设置在死端波导通道和写波导通道上方的电极，以控制从写波导通道到死端波导通道的光耦合。 通过使用位于死端通道的端部区域上方的吸收器将光耦合到死端波导通道外。 集成光学调制器结合在各种扫描机构中。
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公开(公告)号：US4965599A
公开(公告)日：1990-10-23
申请号：US435651
申请日：1989-11-13
CPC分类号： H04N1/4055
摘要： Moire patterns in raster-scanned halftone dots image screens generated by multi-element line scanner devices are rendered imperceptible to the human eye by selecting the number of elements in the line scanner device to be that number which makes the "once-around" scanner frequency an integral multiple of the halftone dot screen frequency and makes the beat frequencies between the scanner and frequencies either fall outside the nominal visible spatial frequency range of about 2.5 to 250 lines per inch or fall on the screen frequency.
摘要翻译： 通过选择线扫描仪装置中的元件的数量，使得多元线扫描器装置产生的光栅扫描半色调点图像屏幕中的莫尔图案对人眼而言是不可察觉的，这使得“一次”扫描器频率 半色调点屏幕频率的整数倍，使扫描仪和频率之间的拍频可能落在约2.5至250线/英寸的标称可见空间频率范围之外或落在屏幕频率上。
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公开(公告)号：US4904034A
公开(公告)日：1990-02-27
申请号：US150469
申请日：1988-01-29
CPC分类号： H04N1/1265 , G02B13/0005 , G02B13/10 , G02B26/106 , G06K7/10594 , H04N1/12
摘要： A scanner including a source of coherent light, a radial hologon, a f.theta. lens and a target. Between the light source and the hologon there are means for forming light from the source into a collimated beam having an oblong cross-sectional shape and for directing the beam onto the hologon at a predetermined incident angle and with the long axis of the oblong cross-sectional shape of the beam radial of the axis of rotation of the hologon. Prismatic means are provided between the hologon and the lens means for so modifying the cross-sectional shape of the beam that the spot at the target station has a selected shape and orientation. This allows the shape, orientation and size of the beam on the hologon to be optimum for duty cycle of the hologon and for spot size on the target. The prismatic means allows the spot shape and orientation on target to be optimized. The prismatic means tends to introduce undesirable bow into the scan line, therefore the wavelength of the light and the grating factor (n .lambda.)/d of the hologon are selected to produce an approximately equivalent opposite bow.
摘要翻译： 扫描仪，包括相干光源，径向光圈，fθ透镜和靶。 在光源和hologon之间存在用于将来自源的光形成具有长圆形横截面形状的准直光束并用于以预定入射角将光束引导到hologon上并且与长方形横截面的长轴对准的装置， hologon旋转轴线径向的横截面形状。 在hologon和透镜装置之间提供棱镜装置，以便改变射束的横截面形状，使得目标台上的斑点具有选定的形状和取向。 这允许hologon上的梁的形状，取向和尺寸对于hologon的占空比和目标上的点尺寸是最佳的。 棱镜装置可以优化目标上的斑点形状和取向。 棱镜装置倾向于将不期望的弓引入扫描线，因此选择光的波长和光圈因子（nλ）/ d以产生大致相当的弓。
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公开(公告)号：US5296958A
公开(公告)日：1994-03-22
申请号：US890407
申请日：1992-05-29
申请人： James E. Roddy , Badhri Narayan
发明人： James E. Roddy , Badhri Narayan
摘要： Laser beam scanning system combines multiple light beams, each of differing wavelengths, to achieve a multiple wavelength scan exposure of a medium, or to increase throughput by writing plural lines simultaneously, or to provide one or more scanning beams of selected wavelength. A polarizing beam splitting prism of the Thompson type is employed as a multiple input beam combiner. The two input laser beam components can be made selectively coincident or closely parallel to form an output beam which is then redirected in a scanning motion and focused to an exposure plane.
摘要翻译： 激光束扫描系统组合多个不同波长的光束，以实现介质的多波长扫描曝光，或通过同时写入多条线来提高吞吐量，或者提供一个或多个选定波长的扫描光束。 采用Thompson型的偏振分束棱镜作为多输入光束组合器。 可以使两个输入激光束分量选择性地重合或紧密平行，以形成输出光束，然后在扫描运动中重定向并聚焦到曝光平面。
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8.发明授权Method of maximizing the frequency of adjacent facet cross scan error such that the increased spatial frequency reduces the visual perception of the exposure error 失效使相邻面交叉扫描误差的频率最大化的方法，使得增加的空间频率降低了曝光误差的视觉感知
公开(公告)号：US5255108A
公开(公告)日：1993-10-19
申请号：US874789
申请日：1992-04-27
申请人： Badhri Narayan , James E. Roddy
发明人： Badhri Narayan , James E. Roddy
CPC分类号： G02B26/106 , G06K15/1285 , Y10S359/90
摘要： By modifying the exposure sequence of the facets in a hologon during manufacture, it is intended to maximize the spatial frequency of the error especially in hologons having large numbers of facets so that the error frequency is multiplied by a large factor, thereby greatly reducing the eye's ability to detect banding problems. This method also minimizes the adjacent facet error as far as is practical.
摘要翻译： 通过在制造期间修改hologon中的刻面的曝光序列，旨在最大化误差的空间频率，特别是在具有大量小面的hologon中，使得误差频率乘以大的因子，从而大大减少了眼睛的 检测条带问题的能力。 这种方法也尽可能地减小了相邻的面误差。
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9.发明授权Method to reduce cross scan error visibility during manufacture of a hologon 失效在制造hologon期间减少交叉扫描误差可见性的方法
公开(公告)号：US5253088A
公开(公告)日：1993-10-12
申请号：US874777
申请日：1992-04-27
申请人： Badhri Narayan , James E. Roddy
发明人： Badhri Narayan , James E. Roddy
CPC分类号： G02B26/106 , Y10S359/90
摘要： By modifying the exposure sequence of the facets during manufacture of a hologon image writer the visibility of cross scan errors are minimized, thereby reducing exposure error and visible banding. With hologons having a number of facets "n" the general form of the exposure sequence is 1, n, 2, n-1, 3, n-2 . . . .
摘要翻译： 通过在制造hologon图像写入器期间修改刻面的曝光顺序，将扫描错误的可视性最小化，从而减少曝光误差和可见条带。 具有多个方面“n”的漫游符号，曝光序列的一般形式为1，n，2，n-1,3，n-2。 。 。 。
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公开(公告)号：US06980280B2
公开(公告)日：2005-12-27
申请号：US09976171
申请日：2001-10-12
IPC分类号： B41J2/445 , B41J2/465 , G02B5/04 , G02B27/18 , G02B27/28 , G02F1/13 , G02F1/1335 , G02F1/13357 , G03B27/32 , G03B21/00 , G03B21/26 , G03B27/44 , G03B27/54
摘要： A two level image writer (10) forms an image from digital data onto a photosensitive medium. A first level illumination system has a first source (20) for emitting a first polarized light beam having a first color; a second source (22) for emitting a second polarized light beam having a second color; and a third source (26) for emitting a third polarized light beam having a third color. A fold mirrors directs each beam to a second level. Three polarizing beamsplitters (73, 75, 77) on the second level receive the polarized beams from the fold mirrors and isolate polarization states of each of the first, second, and third polarized light beam. Three spatial light modulators (90, 95, 97) on the second level modulate the first, second, and third polarized light beam from the polarizing beamsplitter prisms to form an array of image pixels according to said digital data. A diechroic combiner (86) combines the three modulated light beams.
摘要翻译： 二级图像写入器（10）从数字数据形成图像到感光介质上。 第一级照明系统具有用于发射具有第一颜色的第一偏振光束的第一光源（20） 用于发射具有第二颜色的第二偏振光束的第二源极（22） 以及用于发射具有第三颜色的第三偏振光束的第三源极（26）。 折叠镜将每个光束引导到第二级。 第二级上的三个偏振分束器（73,75,77）从折叠镜接收偏振光束并且隔离第一，第二和第三偏振光束中的每一个的偏振状态。 第二级上的三个空间光调制器（90,95,97）根据所述数字数据调制来自偏振分光棱镜的第一，第二和第三偏振光束以形成图像像素阵列。 组合器（86）组合了三个调制的光束。
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