专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08735801B2 Optical encoder 有权
标题翻译：光学编码器
公开(公告)号：US08735801B2
公开(公告)日：2014-05-27
申请号：US13183356
申请日：2011-07-14
申请人： Chihiro Nagura
发明人： Chihiro Nagura
IPC分类号： G01D5/34
CPC分类号： G01D5/34784
摘要： In order to reduce an error component of a detected waveform and enable high-accuracy position detection, there is provided an optical encoder, in which a transmittance distribution or a reflectance distribution provided in a scale track in a displacement scale has a first modulation period and a second modulation period in a scale displacement direction, the light receiving element array is arranged to detect a first signal group including two-phase signals, relative phases of which are reversed, in the first modulation period and a second signal group including two-phase signals, relative phases of which are reversed, in the second modulation period, first position information in the first modulation period is detected from the first signal group, and second position information in the second modulation period is detected from the second signal group, and the second modulation period is an odd multiple of the first modulation period.
摘要翻译：为了减少检测波形的误差分量并且能够进行高精度的位置检测，提供了一种光学编码器，其中设置在位移标尺中的刻度轨道上的透射率分布或反射率分布具有第一调制周期，在比例尺位移方向上的第二调制周期中，光接收元件阵列被布置成在第一调制周期中检测包括其相对相位的两相信号的第一信号组，以及包括两相的第二信号组信号，其相对相位在第二调制周期中，从第一信号组检测第一调制周期中的第一位置信息，并且从第二信号组检测第二调制周期中的第二位置信息，第二调制周期是第一调制周期的奇数倍。

2. 发明授权

US08487237B2 Rotary encoder and method of assembling the same 有权
标题翻译：旋转编码器及其组装方法
公开(公告)号：US08487237B2
公开(公告)日：2013-07-16
申请号：US13050471
申请日：2011-03-17
申请人： Ikuo Watanabe , Masahiko Igaki , Chihiro Nagura , Hiraku Kozuka , Satoru Hamasaki , Makoto Ogura , Tsutomu Nagao , Yasuji Yokoyama
发明人： Ikuo Watanabe , Masahiko Igaki , Chihiro Nagura , Hiraku Kozuka , Satoru Hamasaki , Makoto Ogura , Tsutomu Nagao , Yasuji Yokoyama
IPC分类号： G01D5/347 , G01D5/36
CPC分类号： G01D5/34715 , Y10T29/49002
摘要： Provided is a rotary encoder, including: a rotary scale, which has a predetermined pattern including continuous patterns and a rotational angle original point formed thereon with reference to a pattern center, has a polygonal outer shape, and has the rotational angle original point defined with reference to at least one side of sides of the polygonal outer shape; a hub, which includes projections for abutting the sides of the polygonal outer shape of the rotary scale and positioning the rotary scale; a rotating shaft, which is press-fitted into the hub and rotates coaxially with the pattern center of the rotary scale; and detecting units for irradiating the rotary scale with light and detecting the light reflected by the rotary scale.
摘要翻译：提供一种旋转编码器，包括：具有包括连续图案的预定图案和相对于图案中心形成在其上的旋转角原点的旋转刻度具有多边形外形，并且具有限定的旋转角原点涉及多边形外形的侧面的至少一侧; 轮毂，其包括用于邻接旋转刻度器的多边形外形的侧面并定位旋转刻度的突起; 旋转轴，其被压配合到毂中并与旋转刻度的图案中心同轴地旋转; 以及用于用光照射旋转刻度的检测单元，并检测由旋转刻度表反射的光。

3. 发明授权

US07787332B2 Optical information recording-reproducing apparatus 有权
标题翻译：光信息记录再现装置
公开(公告)号：US07787332B2
公开(公告)日：2010-08-31
申请号：US12131692
申请日：2008-06-02
申请人： Chihiro Nagura
发明人： Chihiro Nagura
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/0943 , G11B7/0948 , G11B7/1378 , G11B7/13927 , G11B2007/13727
摘要： An optical information recording-reproducing apparatus comprising a light source, an objective lens for condensing a light beam from the light source on a recording layer of an optical recording medium, a divergence angle-converting element provided in an optical path from the light source to the optical recoding medium for converting a divergence angle of the light beam to be introduced to the objective lens, a focus error detecting optical system including a photodetector for detecting a focus error of the light beam, an optical element for introducing a part of the light beam emitted from the divergence angle-converting element to the focus error detecting optical system, a circuit for detecting the divergence angle of the light beam emitted from the divergence angle-converting element from output from the photodetector, and a circuit for compensating spherical aberration in the recording layer of the optical recording medium by driving the divergence angle-converting element in accordance with the detection result of the divergence angle-detecting circuit.
摘要翻译：一种光信息记录再现装置，包括光源，用于将来自光源的光束聚集在光记录介质的记录层上的物镜，设置在从光源到光源的光路中的发散角转换元件用于转换要被引入到物镜的光束的发散角的光学记录介质，包括用于检测光束的聚焦误差的光电检测器的聚焦误差检测光学系统，用于引入光的一部分的光学元件从发散角转换元件发射到聚焦误差检测光学系统的光束，用于从发射角转换元件从光电检测器的输出检测发射光束的发散角的电路和用于补偿球面像差的电路通过根据发光角转换元件驱动光记录介质的记录层具有发散角检测电路的检测结果。

4. 发明申请

US20080304396A1 OPTICAL INFORMATION RECORDING-REPRODUCING APPARATUS 有权
标题翻译：光信息记录重现装置
公开(公告)号：US20080304396A1
公开(公告)日：2008-12-11
申请号：US12131692
申请日：2008-06-02
申请人： Chihiro Nagura
发明人： Chihiro Nagura
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/0943 , G11B7/0948 , G11B7/1378 , G11B7/13927 , G11B2007/13727
摘要： An optical information recording-reproducing apparatus comprising a light source, an objective lens for condensing a light beam from the light source on a recording layer of an optical recording medium, a divergence angle-converting element provided in an optical path from the light source to the optical recoding medium for converting a divergence angle of the light beam to be introduced to the objective lens, a focus error detecting optical system including a photodetector for detecting a focus error of the light beam, an optical element for introducing a part of the light beam emitted from the divergence angle-converting element to the focus error detecting optical system, a circuit for detecting the divergence angle of the light beam emitted from the divergence angle-converting element from output from the photodetector, and a circuit for compensating spherical aberration in the recording layer of the optical recording medium by driving the divergence angle-converting element in accordance with the detection result of the divergence angle-detecting circuit.
摘要翻译：一种光信息记录再现装置，包括光源，用于将来自光源的光束聚集在光记录介质的记录层上的物镜，设置在从光源到光源的光路中的发散角转换元件用于转换要被引入到物镜的光束的发散角的光学记录介质，包括用于检测光束的聚焦误差的光电检测器的聚焦误差检测光学系统，用于引入光的一部分的光学元件从发散角转换元件发射到聚焦误差检测光学系统的光束，用于从发射角转换元件从光电检测器的输出检测发射光束的发散角的电路和用于补偿球面像差的电路通过根据发光角转换元件驱动光记录介质的记录层具有发散角检测电路的检测结果。

5. 发明授权

US09417101B2 Optical encoder with a scale that has fine and coarse pitch patterns 有权
标题翻译：具有精细和粗略俯仰图案的刻度的光学编码器
公开(公告)号：US09417101B2
公开(公告)日：2016-08-16
申请号：US13404313
申请日：2012-02-24
申请人： Chihiro Nagura
发明人： Chihiro Nagura
IPC分类号： G01D5/34 , G01D5/347
CPC分类号： G01D5/34746 , G01D5/3473 , G01D5/34784
摘要： An optical encoder includes a light source, a scale which is irradiated by the light source and has a fine pitch pattern and a coarse pitch pattern in a measuring direction in one track, a high resolution detection sensor array which receives light from the scale and detects the fine pitch pattern, and a low resolution detection sensor array which receives light from the scale and detects the coarse pitch pattern. A transmittance distribution or a reflectivity distribution of the scale is a distribution obtained by summing up a modulation component which corresponds to the fine pitch pattern and in which integrated values in a direction perpendicular to the measuring direction form modulation amplitude uniform in the measuring direction and a modulation component which corresponds to the coarse pitch pattern and in which modulation amplitude is uniform in the measuring direction.
摘要翻译：一种光学编码器，包括光源，由光源照射的刻度尺，并且在一个轨道中的测量方向上具有精细的俯仰图案和粗略的俯仰图案;高分辨率检测传感器阵列，其接收来自刻度的光并检测精细音调图案和低分辨率检测传感器阵列，其接收来自刻度的光并检测粗略俯仰图案。标尺的透射率分布或反射率分布是通过将对应于细间距图案的调制分量相加而得到的分布，其中在与测量方向垂直的方向上的积分值形成在测量方向上均匀的调制振幅，调制分量对应于粗略俯仰图案，调制振幅在测量方向上是均匀的。

6. 发明授权

US09354089B2 Encoder 有权
标题翻译：编码器
公开(公告)号：US09354089B2
公开(公告)日：2016-05-31
申请号：US13446153
申请日：2012-04-13
申请人： Chihiro Nagura
发明人： Chihiro Nagura
IPC分类号： G01B11/04 , G01D5/347 , H03M1/14 , H03M1/22
CPC分类号： G01D5/34746 , G01D5/347 , G01D5/34715 , G01D5/34792 , H03M1/143 , H03M1/22
摘要： An encoder includes a scale, a detector array that includes a plurality of detectors, and a signal processor configured to process and convert into positional information, an output signal from the detector array. The signal processor includes a first phase acquirer configured to acquire a first phase of a first modulation period from an output signal of the detector array. The encoder further includes a weighting unit configured to weight an output signal from each of a plurality of detectors using a weight in accordance with a position of the detector array. The weight is set so that in a predetermined range that contains a spatial frequency corresponding to the second modulation period in a spatial frequency response of the first phase acquirer, a value weighted by the weighting unit is equal to or smaller than a non-weighted value.
摘要翻译：编码器包括刻度，包括多个检测器的检测器阵列和被配置为处理和转换成位置信息的信号处理器，来自检测器阵列的输出信号。信号处理器包括第一相位获取器，其被配置为从检测器阵列的输出信号获取第一调制周期的第一相位。编码器还包括加权单元，其被配置为使用根据检测器阵列的位置的权重来对来自多个检测器中的每一个的输出信号进行加权。权重被设定为使得在包含与第一相位获取器的空间频率响应中的第二调制周期相对应的空间频率的预定范围内，由加权单元加权的值等于或小于非加权值。

7. 发明授权

US07843774B2 Optical information recording and reproducing apparatus capable of coma aberration correction 有权
标题翻译：能够进行彗差校正的光信息记录和再现装置
公开(公告)号：US07843774B2
公开(公告)日：2010-11-30
申请号：US11557547
申请日：2006-11-08
申请人： Chihiro Nagura
发明人： Chihiro Nagura
IPC分类号： G11B7/00
CPC分类号： G11B7/0956 , G11B7/1378 , G11B7/13925 , G11B2007/0013
摘要： An optical information recording and reproducing apparatus for performing, using a light beam, recording of information or reproducing of recorded information with respect to a plurality of recording layers of an information recording medium. An objective lens condenses a light beam onto the recording layers. A light beam expander corrects spherical aberration caused by a difference in substrate thickness by changing one of a divergent angle and a convergent angle of a light beam entering the objective lens. A coma aberration correcting device corrects coma aberration caused by tilt of the recording medium. A drive circuit drives the coma aberration correcting device with a drive signal having a value varied depending on an amount of coma aberration caused in accordance with one of a divergent angle and a convergent angle of the light beam expander, which varies for each recording layer, and an amount of coma aberration caused in each recording layer due to a transmission thickness from a light incidence surface of the recording medium to the recording layers.
摘要翻译：一种光信息记录和再现装置，用于使用光束对信息记录介质的多个记录层进行信息的记录或记录信息的再现。物镜将光束聚光到记录层上。光束扩展器通过改变进入物镜的光束的发散角和收敛角之一来校正由衬底厚度的差异引起的球面像差。彗形像差校正装置校正由记录介质的倾斜引起的彗差。驱动电路驱动彗形像差校正装置，其驱动信号具有根据根据每个记录层而变化的光束扩展器的发散角和收敛角所引起的彗差的量而变化的值，以及由于从记录介质的光入射表面到记录层的透射厚度在每个记录层中引起的彗形像差量。

8. 发明申请

US20070217300A1 OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS 失效
标题翻译：光信息记录/再现设备
公开(公告)号：US20070217300A1
公开(公告)日：2007-09-20
申请号：US11685863
申请日：2007-03-14
申请人： Osamu Koyama , Koichiro Nishikawa , Shinnosuke Torii , Chihiro Nagura , Haruhiko Horiguchi
发明人： Osamu Koyama , Koichiro Nishikawa , Shinnosuke Torii , Chihiro Nagura , Haruhiko Horiguchi
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/08511 , G11B7/1353 , G11B7/1369 , G11B7/1376 , G11B7/1381 , G11B7/1387 , G11B2007/0013 , G11B2007/13727
摘要： There is provided an optical information recording/reproducing apparatus including a unit for detecting the focus error signal from the reflected light flux from a recording layer of an optical recording medium, and a unit for focusing the light flux on the recording layer of the optical disk on the basis of the focus error signal. In the case of detecting the focus error signal, the light flux of the effective numeric aperture NAeff
摘要翻译：提供了一种光信息记录/再现装置，包括用于从来自光记录介质的记录层的反射光通量检测聚焦误差信号的单元和用于将光通量聚焦在光盘的记录层上的单元在聚焦误差信号的基础上。在检测到聚焦误差信号的情况下，通过分离装置获得由于物镜和瞳孔内的SIL所产生的有效数值孔径NAeff <1的光束作为聚焦误差信号，由此可以抑制来自SIL的底表面的反射光作为噪声被混合到聚焦误差信号中。

9. 发明申请

US20120217383A1 OPTICAL ENCODER 有权
标题翻译：光学编码器
公开(公告)号：US20120217383A1
公开(公告)日：2012-08-30
申请号：US13370560
申请日：2012-02-10
申请人： Haruhiko Horiguchi , Chihiro Nagura
发明人： Haruhiko Horiguchi , Chihiro Nagura
IPC分类号： G01D5/347
CPC分类号： G01D5/34746 , G01D5/34715
摘要： An optical encoder includes a light source, a scale which is irradiated by the light source and has a fine pitch pattern and a coarse pitch pattern in one track, a photo detector array which detects transmitting light or reflected light from the scale which are emitted from the light source, a signal processing unit including a first initial-stage amplifier unit that generates a position detection signal from the photo detector array, and a control unit that uses an output signal from the first initial-stage amplifier unit to control a light amount variation of the light source. The optical encoder can operate in a high resolution detection mode that forms the photo detector array at a first pitch to detect the fine pitch pattern and a low resolution detection mode that forms the photo detector array at a second pitch to detect the coarse pitch pattern.
摘要翻译：光学编码器包括光源，由光源照射的刻度尺，并且在一条光道中具有精细的节距图案和粗略的节距图案，检测来自标尺的透射光或反射光的光电检测器阵列，其从光源，包括从光检测器阵列产生位置检测信号的第一初级放大器单元的信号处理单元，以及使用来自第一初级放大器单元的输出信号来控制光量的控制单元光源的变化。光学编码器可以以高分辨率检测模式工作，以一个第一间距形成光电检测器阵列，以检测精细间距图形和低分辨率检测模式，以第二间距形成光电检测器阵列，以检测粗略俯仰图案。

10. 发明授权

US09127967B2 Encoder having plural phase acquirers and a positional information acquirer for precisely obtaining a position of a scale 有权
标题翻译：具有多个相位获取器的编码器和用于精确获得刻度位置的位置信息获取器
公开(公告)号：US09127967B2
公开(公告)日：2015-09-08
申请号：US13446057
申请日：2012-04-13
申请人： Chihiro Nagura
发明人： Chihiro Nagura
IPC分类号： G01D5/34 , G01D5/347
CPC分类号： G01D5/34715 , G01D5/34746
摘要： An encoder includes a scale, a detector array that includes a plurality of detectors, and a signal processor configured to process and convert into positional information, an output signal from the detector array. The signal processor includes a first phase acquirer, a second phase acquirer, and a positional information acquirer configured to acquire Sv as a position signal that represents a position of the scale. Sv satisfies Sv=A·Φ1−B·Φ2 where A and B are coefficients that satisfy A/B=n/m using integers m and n that satisfy |(m·P1−n·P2)|
摘要翻译：编码器包括刻度，包括多个检测器的检测器阵列和被配置为处理和转换成位置信息的信号处理器，来自检测器阵列的输出信号。信号处理器包括第一相位获取器，第二相位获取器和配置为获取Sv作为表示刻度位置的位置信号的位置信息获取器。 Sv满足Sv = A·Φ1-B·Φ2，其中A和B是满足A / B = n / m的系数，使用满足|（m·P1-n·P2）| <|（P1-P2 ）|。 Φ1是由第一相位获取器获取的第一相位，Φ2是由第二相位获取器获取的第二相位，P1是第一调制周期，P2是第二调制周期。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式