公开(公告)号：US08785835B1

公开(公告)日：2014-07-22

申请号：US13738358

申请日：2013-01-10

申请人： Daniel R. Marshall

发明人： Daniel R. Marshall

IPC分类号： H01J3/14 ,  G01J3/50 ,  G01J1/04

CPC分类号： G02B7/346

摘要： This focus sensor is readily usable in a system using pupil obscuration to measure the state of focus of a light beam. A scattering volumetric filter modifies a three-dimensional wavefront so that focus can be detected by a two-dimensional detector for conversion to a one-dimensional signal having values of plus, zero and minus. This diffusing filter comprises sub wavelength particles having a high index of refraction suspended in an adhesive to produce a solid diffuser. This focus sensor enables a well-behaved focus curve having a constant slope near best focus, while maintaining a slope that is either constant or monotonic at a minimal rate over an extended distance to support a long capture-range over which a focus-controlling servo-mechanism can acquire and maintain focus in the presence of corrupting target surface topography or optical defects.

摘要翻译： 该聚焦传感器在使用光瞳遮蔽的系统中可以容易地使用，以测量光束的焦点状态。 散射体积滤波器修改三维波前，使得可以通过二维检测器检测焦点，以转换为具有正，零和负值的一维信号。 该扩散滤光器包括具有悬挂在粘合剂中的高折射率的亚波长颗粒以产生固体扩散器。 该焦点传感器能够实现在最佳焦点附近具有恒定斜率的良好行为的聚焦曲线，同时保持在延伸距离上以最小速率恒定或单调的斜率，以支持长的捕获范围，在该捕获范围内聚焦控制伺服 机制可以在存在腐蚀性目标表面形貌或光学缺陷的情况下获得并保持重点。

公开(公告)号：US20120175495A1

公开(公告)日：2012-07-12

申请号：US12987027

申请日：2011-01-07

申请人： Daniel R. Marshall

发明人： Daniel R. Marshall

IPC分类号： G02B27/40

CPC分类号： G02B27/0018 ,  G02B21/245

摘要： An autofocus system adaptable for use in microscopes or other optical systems incorporates an auxiliary photodetector that measures light only from a reference light source. An outgoing reference beam, incident upon a target to be inspected, is reflected to become an incoming reference beam incident on a photodetector. The photodetector generates a focus error signal proportional to the displacement of the target from the ideal focal point. The auxiliary photodetector generates a correction signal proportional to the output of the reference light source. The correction signal is used to compensate the focus error signal for stray light generated by the reference light source. The compensated focus error signal may be used to drive a servomechanism to displace either the target or the microscope objective lens to bring the target into focus. The correction signal may also be used to compensate the reference light source gain to control the reference light source output.

摘要翻译： 适用于显微镜或其他光学系统的自动对焦系统包括仅从参考光源测量光的辅助光电检测器。 入射到待检查目标上的输出参考光束被反射成为入射到光电检测器上的入射参考光束。 光电检测器产生与目标从理想焦点的位移成比例的聚焦误差信号。 辅助光电检测器产生与参考光源的输出成比例的校正信号。 校正信号用于补偿由参考光源产生的杂散光的聚焦误差信号。 补偿的聚焦误差信号可用于驱动伺服机构以移动目标物体或显微镜物镜以使目标物聚焦。 校正信号也可以用于补偿参考光源增益以控制参考光源输出。

公开(公告)号：US07348528B2

公开(公告)日：2008-03-25

申请号：US11312034

申请日：2005-12-20

申请人： Daniel R. Marshall

发明人： Daniel R. Marshall

IPC分类号： G02B7/04 ,  G02B27/40 ,  G02B27/64

CPC分类号： G01S17/48 ,  G01S7/4812 ,  G01S7/4817 ,  G02B21/0048

摘要： A distance measuring device capable of being used in microscopes or other optical systems. Embodiments of the invention employ one or more scanning mirrors to scan a reference beam over a target to be inspected. The reference beam is returned and detected by a photodetector. The reference beam may be created by using a knife-edge element which allows the outgoing reference beam and incoming reference beam to follow the same path so that the apparent motion of the spot on the target surface is not detected by the photodetector. The photodetector generates an electronic signal corresponding to the displacement of the target away from the ideal focal point. The electrical signal may be used to drive a servomechanism to displace either the target or the microscope objective lens to bring the target in focus.

摘要翻译： 一种可用于显微镜或其他光学系统的距离测量装置。 本发明的实施例采用一个或多个扫描镜来扫描待检查的目标上的参考光束。 参考光束由光电检测器返回并检测。 可以通过使用允许出射参考光束和入射参考光束遵循相同路径的刀刃元件来创建参考光束，使得光电检测器不检测目标表面上光斑的视在运动。 光电检测器产生对应于远离理想焦点的目标位移的电子信号。 电信号可用于驱动伺服机构以移动目标物体或显微镜物镜以使目标物聚焦。

公开(公告)号：US06632175B1

公开(公告)日：2003-10-14

申请号：US09710161

申请日：2000-11-08

申请人： Daniel R. Marshall

发明人： Daniel R. Marshall

IPC分类号： A61B505

CPC分类号： A61B1/041 ,  A61B1/04 ,  A61B5/0031 ,  A61B5/01 ,  A61B5/14503 ,  A61B5/14539 ,  A61B5/6861

摘要： The present invention provides a swallowable data recorder medical device. The swallowable data recorder medical device includes a capsule including a sensing module for sensing a biologic condition within a body. A recording module is provided including an atomic resolution storage device. The recording module is electrically coupled to the sensing module for recording data representative of the sensed biologic condition in the atomic resolution storage device. A power supply is coupled to the recording module.

摘要翻译： 本发明提供一种吞咽式数据记录器医疗装置。 吞咽式数据记录器医疗装置包括：胶囊，其包括用于感测身体内的生物状况的感测模块。 提供了包括原子分辨率存储装置的记录模块。 记录模块电耦合到感测模块，用于记录表示原子分辨率存储装置中感测到的生物条件的数据。 电源耦合到记录模块

公开(公告)号：US06262851B1

公开(公告)日：2001-07-17

申请号：US09488389

申请日：2000-01-18

申请人： Daniel R. Marshall

发明人： Daniel R. Marshall

IPC分类号： G02B2714

CPC分类号： G02B27/145 ,  G02B27/149 ,  G02B27/283 ,  G02F1/133536 ,  G02F2001/13355 ,  G02F2203/02 ,  G03B21/14 ,  G03B21/2073 ,  H04N9/3105

摘要： A double-pass projection display system with separate polarizers and analyzers. One embodiment of the invention includes an input polarizer, a color separation/recombination device, and a number of image producing sections. The input polarizer receives unpolarized white light and polarizes this light. The color separation/recombination device receives the polarized white light and separates this light into a number of component color bands. The color separation/recombination device then supplies a component color band to each image producing sections. Each section includes a spatial light modulator and an output analyzer. The spatial light modulator modulates the color band that the image producing section receives from the color separation/recombination device. The output analyzer then (1) discards the light, in the modulated band, that has a first polarization state, and (2) directs the light, in the modulated band, that has a second polarization state to the color separation/recombination device. The color separation/recombination device then produces a single color light by combining the component color bands that it receives from the output analyzers of the image producing sections.

摘要翻译： 具有独立偏振器和分析仪的双通投影显示系统。 本发明的一个实施例包括输入偏振器，分色/复合装置和多个图像产生部分。 输入偏振器接收非偏振白光并使该光偏振。 色分离/复合装置接收偏振的白光，并将该光分离成许多分量色带。 然后，颜色分离/复合装置向每个图像生成部分提供分量色带。 每个部分包括空间光调制器和输出分析器。 空间光调制器调制图像产生部分从色分离/重组装置接收的色带。 然后，输出分析器（1）将具有第一偏振状态的调制频带中的光放弃，并且（2）将具有第二偏振态的调制频带中的光引导至色分离/复合装置。 然后，分色/复合装置通过组合从图像产生部分的输出分析器接收的分量色带产生单色光。

公开(公告)号：US5097455A

公开(公告)日：1992-03-17

申请号：US475628

申请日：1990-02-06

申请人： Daniel R. Marshall

发明人： Daniel R. Marshall

IPC分类号： G02B7/28 ,  G11B7/09 ,  G11B7/13 ,  G11B11/10 ,  G11B11/105

CPC分类号： G11B7/131 ,  G11B7/0908 ,  G11B7/0917 ,  G11B7/0943

摘要： A method and apparatus for detecting the focus of a beam of light directed onto grooved optical media, wherein light reflected from said media has a number of orders of reflection forming a sheared interferogram, and wherein overlapping regions are generated between said orders of reflection in said interferogram, is shown to include a light receiving member for receiving light reflected from the media and for directing the light onto a detector member for detecting differences in the brightness of light across the overlapping regions. The detecting member is shown to include, a first photosensitive member for detecting the brightness of light in a portion of the overlap region between the zeroth and first order reflections, a second photosensitive member for detecting the brightness of light in the remainder of the overlap region between the zeroth and first order reflections, and a comparator for comparing the brightness detected between the portion and the remainder of the overlap region.

公开(公告)号：US5070493A

公开(公告)日：1991-12-03

申请号：US355738

申请日：1989-05-22

申请人： Daniel R. Marshall ,  David K. Campbell ,  Bernard W. Bell, Jr. ,  David K. Towner

发明人： Daniel R. Marshall ,  David K. Campbell ,  Bernard W. Bell, Jr. ,  David K. Towner

IPC分类号： G11B11/10 ,  G11B7/135 ,  G11B7/22 ,  G11B11/105

CPC分类号： G11B7/1356

摘要： An optical assembly incorporating a wedge-shaped optically transparent prism, a 45 degree right isosceles triangular prism which has two thin film coated surfaces, a rhomboidal prism attached to the triangular prism, a second, smaller 45 degree right isosceles triangular prism attached to one end face of the rhomboidal prism and two planoconvex lenses attached to the combination of the rhomboidal and second triangular prisms is mounted within a housing. All of the optical components are cemented to the adjacent component utilizing a transparent optical cement to form an integral unit. Data and servo detector assemblies and a diode laser light source are mounted on the external surfaces of the housing to form a stationary optical assembly which provides the following functions: generates a collimated beam of light whose power output may be modulated electronically to perform read, write and erase functions; generates an electrical data signal derived from a portion of a returning light beam; and generates suitable electrical error signals for servomechanical control of radial and axial motion of a focused light spot on information storage media.

公开(公告)号：US5001333A

公开(公告)日：1991-03-19

申请号：US427288

申请日：1989-10-24

申请人： Daniel R. Marshall

发明人： Daniel R. Marshall

IPC分类号： G02B7/28 ,  G11B7/085 ,  G11B7/09 ,  G11B7/135 ,  G11B11/10 ,  G11B11/105

CPC分类号： G11B11/10576 ,  G11B7/08582 ,  G11B7/0912

摘要： A method and apparatus for generating a focus error signal from a beam of light reflected from an optical surface, is shown to include a beamsplitter for splitting the reflected light beam into first and second beams, first and second detectors for generating first and second detection signals representative of light on said detectors, a first lens having a first focal length for focusing the first beam at a first focal point, wherein the first detector is positioned in the convergent portion of the focused first beam so that the ratio of the distance of the first detector from the first lens to the first focal length is a first value, a second lens having a second focal length, different from the first focal length for focusing the second beam at a second focal point, wherein the second detector is positioned in the convergent portion of the focused second beam so that the ratio of the distance of the second detector from the second lens to the second focal length is a second value equal to the first value, and a differencing circuit for subtracting the signals generated by the first and second detectors thereby generating a focus error signal. Such apparatus and method has excellent rejection of beam pattern noise, i.e., spatial variations of optical power unrelated to the state of focus of the beam and is suitable for incorporation in a split optics information system.

摘要翻译： 用于从光学表面反射的光束产生聚焦误差信号的方法和装置被示为包括用于将反射光束分成第一和第二光束的分束器，用于产生第一和第二检测信号的第一和第二检测器 代表所述检测器上的光的第一透镜，具有用于在第一焦点处聚焦第一光束的第一焦距的第一透镜，其中第一检测器位于聚焦的第一光束的会聚部分中，使得 从第一透镜到第一焦距的第一检测器是第一值，第二透镜具有不同于用于在第二焦点处聚焦第二光束的第一焦距的第二焦距，其中第二检测器位于 聚焦的第二光束的收敛部分，使得第二检测器与第二透镜的距离与第二焦距的比率是第二值eq 以及用于减去由第一和第二检测器产生的信号的差分电路，从而产生聚焦误差信号。 这种装置和方法具有良好的波束图案噪声抑制，即与波束的焦点状态无关的光功率的空间变化，并且适用于并入分裂光学信息系统中。

公开(公告)号：US06735163B2

公开(公告)日：2004-05-11

申请号：US09797726

申请日：2001-03-02

申请人： Daniel R. Marshall

发明人： Daniel R. Marshall

IPC分类号： G11B700

CPC分类号： B82Y10/00 ,  G11B9/14 ,  G11B9/1418 ,  G11B9/1427 ,  G11B9/1445 ,  G11B9/1454 ,  G11B23/00 ,  Y10S977/849 ,  Y10S977/861 ,  Y10S977/863 ,  Y10S977/873 ,  Y10S977/881

摘要： A storage device including many field emitters in close proximity to a storage medium, and a micromover, all in a partial vacuum. Each field emitter can generate an electron beam current. The storage medium has many storage areas on it, with each field emitter responsible for a number of storage areas. Also, each storage area can be in a number of different states to represent the information stored in that area. In storing information to the storage device, the power density of an electron beam current is increased to change the state of the storage area bombarded by the electron beam current. In reading information from the device, the power density of the electron beam current is reduced to generate a signal current from the storage area bombarded by the electron beam current. During reading, the power density is selected to be low enough so that no writing occurs. The magnitude of the signal current depends on the state of the storage area. The information stored in the storage area is read by measuring the magnitudes of the signal current. The micromover scans the storage medium with respect to the field emitters so that each field emitter can access many storage areas. The micromover causes a periodic change in the relative positions between the field emitters and the storage medium, thereby generating periodic field emitter trajectories.

摘要翻译： 一种存储装置，包括紧邻存储介质的许多场发射器和全部处于部分真空中的微型扫描器。 每个场发射器可以产生电子束电流。 存储介质上有许多存储区域，每个场发射器负责多个存储区域。 此外，每个存储区域可以是多个不同的状态，以表示存储在该区域中的信息。 在将信息存储到存储装置中时，电子束电流的功率密度增加以改变由电子束电流轰击的存储区域的状态。 在从器件读取信息时，电子束电流的功率密度降低，以产生由电子束电流轰击的存储区域的信号电流。 在读取期间，功率密度被选择为足够低，使得不会发生写入。 信号电流的大小取决于存储区域的状态。 通过测量信号电流的大小来读取存储在存储区域中的信息。 微型扫描器相对于场发射器扫描存储介质，使得每个场发射器可以访问许多存储区域。 微突起导致场发射器和存储介质之间的相对位置的周期性变化，由此产生周期性场发射器轨迹。

公开(公告)号：US5920336A

公开(公告)日：1999-07-06

申请号：US528488

申请日：1995-09-12

申请人： Robert J. Lawton ,  Daniel R. Marshall

发明人： Robert J. Lawton ,  Daniel R. Marshall

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  G06K15/12 ,  H04N1/04 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  B41J2/47

CPC分类号： H04N1/047 ,  G02B26/127 ,  G06K15/1223 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0458 ,  H04N2201/046 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04791

摘要： A system and method of deflecting a laser beam in a laser printer for providing enhanced resolution and reduced banding effects. Specifically, to enhance resolution, the laser beam is borrowed (deflected) from a white space area adjacent an image to double resolution at the edges of the image. Similarly, banding is reduced by deflecting the beam to compensate for drum rotational and translational errors. The beam is deflected using an electro-optic modulator placed between the laser diode and the scanning mirror. Encoders detect drum rotational errors and motion between the optics unit and the drum to provide a closed loop feedback system for reducing banding.

摘要翻译： 一种用于在激光打印机中偏转激光束以提供增强的分辨率和减小的条带效应的系统和方法。 具体来说，为了提高分辨率，激光束从与图像相邻的白色空间区域借用（偏转）到图像边缘的双分辨率。 类似地，通过使光束偏转以补偿滚筒旋转和平移误差来减小条纹。 使用放置在激光二极管和扫描反射镜之间的电光调制器使光束偏转。 编码器检测光盘单元和滚筒之间的滚筒旋转误差和运动，以提供闭环反馈系统，以减少条带。