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1. 发明授权

US5483058A High angular sensitivity, absolute rotary encoding device with polygonal mirror and stand-alone diffraction gratings 失效
$High angular sensitivity, absolute rotary encoding device with polygonal mirror and stand-alone diffraction gratings$
标题翻译：高角度灵敏度，带多面镜的绝对旋转编码装置和独立衍射光栅
公开(公告)号：US5483058A
公开(公告)日：1996-01-09
申请号：US137706
申请日：1993-10-18
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： G01D5/38 , G01D5/34
CPC分类号： G01D5/38
摘要： A device for position encoding of a rotating shaft in which a polygonal mirror having a number of facets is mounted to the shaft and a monochromatic light beam is directed towards the facets. The facets of the polygonal mirror direct the light beam to a stand-alone low line density diffraction grating to diffract the monochromatic light beam into a number of diffracted light beams such that a number of light spots are created on a linear array detector. An analog-to-digital converter is connected to the linear array detector for reading the position of the spots on the linear array detector means. A microprocessor with memory is connected to the analog-to-digital converter to hold and manipulate the data provided by the analog-to-digital converter on the position of the spots and to compute the position of the shaft based upon the data from the analog-to-digital converter.
摘要翻译：一种用于旋转轴的位置编码的装置，其中具有多个小平面的多面镜安装到轴上，并且单色光束被引导到小平面。多面镜的小平面将光束引导到独立的低线密度衍射光栅，以将单色光束衍射成多个衍射光束，使得在线性阵列检测器上产生多个光点。模数转换器连接到线性阵列检测器，用于读取线阵列检测器装置上的点的位置。具有存储器的微处理器连接到模拟数字转换器，以保持和操纵由模数转换器提供的数据在点的位置上，并根据模拟数据的数据计算轴的位置数字转换器。

2. 发明授权

US5058281A Control system for ruling blazed, aberration corrected diffraction gratings 失效
$Control system for ruling blazed, aberration corrected diffraction gratings$
标题翻译：控制系统用于规定闪耀，像差校正衍射光栅
公开(公告)号：US5058281A
公开(公告)日：1991-10-22
申请号：US571344
申请日：1990-08-23
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： B23Q35/129 , B24B13/04 , G02B5/18 , G02B27/00
CPC分类号： B82Y15/00 , B23Q35/129 , B24B13/046 , G02B27/0031 , G02B5/1852 , Y10S977/852 , Y10S977/855
摘要： The grooved surface of an aberration-corrected holographic model grating is sensed by utilizing the sensing head of a scanning tunneling microscope. The sensing head is mechanically connected to a blazing type stylus for replicating the groove pattern of the holographic model on a ruled grating blank. A ruling engine causes the sensing head not only to scan the surface of the holographic grating model but also drive a blazing type ruling stylus or an equivalent type device in accordance with an error signal resulting from a departure of a sensing tip from the top of the holographic model groove as a function of tunneling current.
摘要翻译：通过利用扫描隧道显微镜的感测头来检测像差校正的全息模型光栅的凹槽表面。感测头机械地连接到用于将全息模型的凹槽图案复制在刻划的光栅板上的典型的触控笔。排版引擎使得感测头不仅扫描全息光栅模型的表面，而且还根据从感测尖端从顶部的顶部离开而产生的误差信号来驱动喷射式刻线笔或等效型装置全息模型槽作为隧道电流的函数。

3. 发明授权

US07060968B1 Method and apparatus for optical encoding with compressible imaging 失效
标题翻译：用于可压缩成像的光学编码的方法和装置
公开(公告)号：US07060968B1
公开(公告)日：2006-06-13
申请号：US10456164
申请日：2003-06-04
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： G01D5/34
CPC分类号： G01D5/36 , G01D5/34776
摘要： The present invention presents an optical encoder with increased conversion rates. Improvement in the conversion rate is a result of combining changes in the pattern recognition encoder's scale pattern with an image sensor readout technique which takes full advantage of those changes, and lends itself to operation by modern, high-speed, ultra-compact microprocessors and digital signal processors (DSP) or field programmable gate array (FPGA) logic elements which can process encoder scale images at the highest speeds. Through these improvements, all three components of conversion time (reciprocal conversion rate)—namely exposure time, image readout time, and image processing time—are minimized.
摘要翻译：本发明提出了一种具有更高转换率的光学编码器。转换率的提高是将图案识别编码器的尺度图案的变化与充分利用这些变化的图像传感器读出技术相结合的结果，并且适用于现代，高速，超紧凑的微处理器和数字信号处理器（DSP）或现场可编程门阵列（FPGA）逻辑元件，可以以最高速度处理编码器缩放图像。通过这些改进，最小化转换时间（相互转换率） - 曝光时间，图像读出时间和图像处理时间的所有三个组成部分。

4. 发明授权

US5329121A Rotary encoding device with polygonal reflector and centroid detection 失效
标题翻译：旋转编码装置，具有多边形反射体和重心检测
公开(公告)号：US5329121A
公开(公告)日：1994-07-12
申请号：US22219
申请日：1993-02-25
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： G01D5/28 , G01D5/34
CPC分类号： G01D5/285
摘要： A device for positioning encoding of a rotating shaft in which a polygonal mirror having a number of facets is mounted to the shaft and a light beam is directed towards the facets. The facets of the polygonal mirror reflect the light beam such that a light spot is created on a linear array detector. An analog-to-digital converter is connected to the linear array detector for reading the position of the spot on the spots on the linear array detector. A microprocessor with memory is connected to the analog-to-digital converter to hold and manipulate the data provided by the analog-to-digital converter on the position of the spot and to compute the position of the shaft based upon the data from the analog-to-digital converter.
摘要翻译：一种用于定位编码旋转轴的装置，其中具有多个小平面的多面镜被安装到轴上，并且光束被引向小平面。多面镜的小平面反射光束，使得在线性阵列检测器上产生光点。模数转换器连接到线性阵列检测器，用于读取线性阵列检测器上点上的点的位置。具有存储器的微处理器连接到模拟 - 数字转换器，以保持和操纵由位置上的模数转换器提供的数据，并根据模拟数据的数据计算轴的位置数字转换器。

5. 发明授权

US5266796A Rotary encoding device using polygonal mirror with diffraction gratings on each facet 失效
$Rotary encoding device using polygonal mirror with diffraction gratings on each facet$
标题翻译：旋转编码装置，在每个刻面上使用具有衍射光栅的多面镜
公开(公告)号：US5266796A
公开(公告)日：1993-11-30
申请号：US971035
申请日：1992-11-03
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： G01D5/38 , G01D5/34
CPC分类号： G01D5/38
摘要： A device for position encoding of a rotating shaft in which a polygonal mirror having a number of facets is mounted to the shaft and a monochromatic light beam is directed towards the facets. The facets of the polygonal mirror each have a low line density diffraction grating to diffract the monochromatic light beam into a number of diffracted light beams such that a number of light spots are created on a linear array detector. An analog-to-digital converter is connected to the linear array detector for reading the position of the spots on the linear array detector means. A microprocessor with memory is connected to the analog-to-digital converter to hold and manipulate the data provided by the analog-to-digital converter on the position of the spots and to compute the position of the shaft based upon the data from the analog-to-digital converter.
摘要翻译：一种用于旋转轴的位置编码的装置，其中具有多个小平面的多面镜安装到轴上，并且单色光束被引导到小平面。多面镜的小平面各自具有低线密度衍射光栅，以将单色光束衍射成多个衍射光束，使得在线性阵列检测器上产生多个光斑。模数转换器连接到线性阵列检测器，用于读取线阵列检测器装置上的点的位置。具有存储器的微处理器连接到模拟数字转换器，以保持和操纵由模数转换器提供的数据在点的位置上，并根据模拟数据的数据计算轴的位置数字转换器。

6. 发明授权

US07924415B2 Apparatus and method for a light direction sensor 有权
标题翻译：光方向传感器的装置和方法
公开(公告)号：US07924415B2
公开(公告)日：2011-04-12
申请号：US12389097
申请日：2009-02-19
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： G01C1/00
CPC分类号： G01C21/025 , B64G1/363 , G01D5/363 , G01S3/7835 , G01S3/7862
摘要： The present invention provides a light direction sensor for determining the direction of a light source. The system includes an image sensor; a spacer attached to the image sensor, and a pattern mask attached to said spacer. The pattern mask has a slit pattern that as light passes through the slit pattern it casts a diffraction pattern onto the image sensor. The method operates by receiving a beam of light onto a patterned mask, wherein the patterned mask as a plurality of a slit segments. Then, diffusing the beam of light onto an image sensor and determining the direction of the light source.
摘要翻译：本发明提供一种用于确定光源方向的光方向传感器。该系统包括图像传感器; 附接到图像传感器的间隔件和附接到所述间隔件的图案掩模。图案掩模具有狭缝图案，当光通过狭缝图案时，其将衍射图案投射到图像传感器上。该方法通过在图案化掩模上接收光束来操作，其中图案化掩模作为多个狭缝段。然后，将光束扩散到图像传感器上并确定光源的方向。

7. 发明申请

US20100208245A1 APPARATUS AND METHOD FOR A LIGHT DIRECTION SENSOR 有权
标题翻译：一种轻型方向传感器的装置和方法
公开(公告)号：US20100208245A1
公开(公告)日：2010-08-19
申请号：US12389097
申请日：2009-02-19
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： G01B11/26 , G01D5/36 , G01C17/00
CPC分类号： G01C21/025 , B64G1/363 , G01D5/363 , G01S3/7835 , G01S3/7862
摘要： The present invention provides a light direction sensor for determining the direction of a light source. The system includes an image sensor; a spacer attached to the image sensor, and a pattern mask attached to said spacer. The pattern mask has a slit pattern that as light passes through the slit pattern it casts a diffraction pattern onto the image sensor. The method operates by receiving a beam of light onto a patterned mask, wherein the patterned mask as a plurality of a slit segments. Then, diffusing the beam of light onto an image sensor and determining the direction of the light source.
摘要翻译：本发明提供一种用于确定光源方向的光方向传感器。该系统包括图像传感器; 附接到图像传感器的间隔件和附接到所述间隔件的图案掩模。图案掩模具有狭缝图案，当光通过狭缝图案时，其将衍射图案投射到图像传感器上。该方法通过在图案化掩模上接收光束来操作，其中图案化掩模作为多个狭缝段。然后，将光束扩散到图像传感器上并确定光源的方向。

8. 发明授权

US06765195B1 Method and apparatus for two-dimensional absolute optical encoding 失效
标题翻译：二维绝对光编码方法与装置
公开(公告)号：US06765195B1
公开(公告)日：2004-07-20
申请号：US10154392
申请日：2002-05-22
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： G01D534
CPC分类号： G01D5/347
摘要： This invention presents a two-dimensional absolute optical encoder and a method for determining position of an object in accordance with information from the encoder. The encoder of the present invention comprises a scale having a pattern being predetermined to indicate an absolute location on the scale, means for illuminating the scale, means for forming an image of the pattern; and detector means for outputting signals derived from the portion of the image of the pattern which lies within a field of view of the detector means, the field of view defining an image reference coordinate system, and analyzing means, receiving the signals from the detector means, for determining the absolute location of the object. There are two types of scale patterns presented in this invention: grid type and starfield type.
摘要翻译：本发明提供一种二维绝对光学编码器和一种根据来自编码器的信息来确定物体的位置的方法。本发明的编码器包括具有预定的图案的刻度，以表示刻度上的绝对位置，用于照亮刻度的装置，用于形成图案的图像的装置; 以及检测器装置，用于输出从位于检测器装置的视野内的图案的图像的部分得到的信号，定义图像参考坐标系的视场和分析装置，从检测器装置接收信号，用于确定对象的绝对位置。在本发明中呈现两种类型的尺度图案：网格类型和星型类型。

9. 发明授权

US5965879A Method and apparatus for ultra-high-sensitivity, incremental and absolute optical encoding 失效
标题翻译：用于超高灵敏度，增量和绝对光学编码的方法和装置
公开(公告)号：US5965879A
公开(公告)日：1999-10-12
申请号：US852778
申请日：1997-05-07
申请人： Douglas B. Leviton
发明人： Douglas B. Leviton
IPC分类号： G01D5/347 , G01D5/34
CPC分类号： G01D5/34792
摘要： An absolute optical linear or rotary encoder which encodes the motion of an object (3) with increased resolution and encoding range and decreased sensitivity to damage to the scale includes a scale (5), which moves with the object and is illuminated by a light source (11). The scale carries a pattern (9) which is imaged by a microscope optical system (13) on a CCD array (17) in a camera head (15). The pattern includes both fiducial markings (31) which are identical for each period of the pattern and code areas (33) which include binary codings of numbers identifying the individual periods of the pattern. The image of the pattern formed on the CCD array is analyzed by an image processor (23) to locate the fiducial marking, decode the information encoded in the code area, and thereby determine the position of the object.
摘要翻译：绝对的光学线性或旋转编码器，其对分辨率和编码范围增加的对象（3）的运动进行编码，并降低对刻度的损伤的灵敏度，包括与物体一起移动并被光源照射的刻度（5）（11）。刻度带有由相机头（15）中的CCD阵列（17）上的显微镜光学系统（13）成像的图案（9）。该图案包括对于图案的每个周期都相同的基准标记（31）和包括标识图案的各个周期的数字的二进制编码的代码区域（33）。通过图像处理器（23）对形成在CCD阵列上的图案的图像进行分析，以定位基准标记，对编码区域中编码的信息进行解码，从而确定对象的位置。

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