公开(公告)号：US20090316155A1

公开(公告)日：2009-12-24

申请号：US12227431

申请日：2007-06-01

申请人： Toru Yaku ,  Atsushi Tominaga

发明人： Toru Yaku ,  Atsushi Tominaga

IPC分类号： G01N21/55 ,  C25F1/00

CPC分类号： G01D5/34746 ,  G01D5/347 ,  G01D5/34707 ,  G01D5/34792

摘要： A reflection type encoder, which receives a plurality of light-receiving signals from a single scale, includes a light source, a scale having a plurality of patterns formed thereon to which light is irradiated from the light source, and a light-receiving element for receiving light reflected from each of the plurality of patterns, wherein a plurality of patterns each having different thicknesses are formed on a single track of the scale by using a dielectric substance, light of a plurality of wavelengths each having different brightnesses in accordance with differences in the thickness of the dielectric substance is irradiated from the light source, and a light-receiving signal is obtained for the respective thicknesses of the dielectric substance. Therefore, the scale can be downsized by overlapping a plurality of patterns on the same track.

摘要翻译： 从单一尺度接收多个光接收信号的反射型编码器包括光源，其上形成有从光源照射光的多个图案的标尺和用于 接收从所述多个图案中的每一个反射的光，其中通过使用电介质物质在所述刻度的单个轨道上形成各自具有不同厚度的多个图案，所述多个波长的光根据不同的亮度而具有不同的亮度 从光源照射电介质的厚度，得到电介质的厚度的光接收信号。 因此，可以通过在同一轨道上重叠多个图案来缩小尺度。

公开(公告)号：US08127993B2

公开(公告)日：2012-03-06

申请号：US12227431

申请日：2007-06-01

申请人： Toru Yaku ,  Atsushi Tominaga

发明人： Toru Yaku ,  Atsushi Tominaga

IPC分类号： G06K7/14

CPC分类号： G01D5/34746 ,  G01D5/347 ,  G01D5/34707 ,  G01D5/34792

摘要： A reflection type encoder, which receives a plurality of light-receiving signals from a single scale, includes a light source, a scale having a plurality of patterns formed thereon to which light is irradiated from the light source, and a light-receiving element for receiving light reflected from each of the plurality of patterns, wherein a plurality of patterns each having different thicknesses are formed on a single track of the scale by using a dielectric substance, light of a plurality of wavelengths each having different brightnesses in accordance with differences in the thickness of the dielectric substance is irradiated from the light source, and a light-receiving signal is obtained for the respective thicknesses of the dielectric substance. Therefore, the scale can be downsized by overlapping a plurality of patterns on the same track.

摘要翻译： 从单一尺度接收多个光接收信号的反射型编码器包括光源，其上形成有从光源照射光的多个图案的标尺和用于 接收从所述多个图案中的每一个反射的光，其中通过使用电介质物质在所述刻度的单个轨道上形成各自具有不同厚度的多个图案，所述多个波长的光根据不同的亮度而具有不同的亮度 从光源照射电介质的厚度，得到电介质的厚度的光接收信号。 因此，可以通过在同一轨道上重叠多个图案来缩小尺度。

公开(公告)号：US07619208B2

公开(公告)日：2009-11-17

申请号：US11976542

申请日：2007-10-25

申请人： Norio Masada ,  Yukinari Nozawa ,  Toru Yaku

发明人： Norio Masada ,  Yukinari Nozawa ,  Toru Yaku

IPC分类号： G01D5/34

CPC分类号： G01D5/34707

摘要： A photoelectric encoder includes: a scale having a grating formed thereon along a measuring axis; a light source operative to emit light to the scale so as to form a light spot on the grating; and a photoreceiver operative to receive reflected light from the scale. The light source and the photoreceiver are disposed so as to be allowed to move relative to the scale at least in a direction along the measuring axis. The light source emits the light to the scale so that the photoreceiver receives the reflected light by the scale. The light source emits light with different wavelengths. The scale includes a plurality of reflection portions that respectively reflect the light with different wavelengths.

摘要翻译： 光电编码器包括：具有沿着测量轴形成在其上的光栅的刻度; 光源，用于将光发射到刻度上，以在光栅上形成光斑; 以及可接收来自刻度尺的反射光的光接收器。 光源和光接收器被设置成允许至少沿着测量轴线的方向相对于刻度尺移动。 光源将光发射到刻度，使得光接收器通过刻度尺接收反射光。 光源发出不同波长的光。 标尺包括分别反射具有不同波长的光的多个反射部分。

公开(公告)号：US07265338B2

公开(公告)日：2007-09-04

申请号：US11257895

申请日：2005-10-25

申请人： Tetsuro Kiriyama ,  Toru Yaku ,  Shingo Nihommori

发明人： Tetsuro Kiriyama ,  Toru Yaku ,  Shingo Nihommori

IPC分类号： G01D5/34 ,  G01D5/36 ,  G01D5/38 ,  G01J1/04

CPC分类号： G01D5/38 ,  G01D5/34715

摘要： A photoelectric encoder is provided, which emits light from a light source to a main scale and an index scale that can relatively move with respect to each other and obtains a light-receiving signal by interaction between the main scale and the index scale. The photoelectric encoder uses as the light source an incoherent semiconductor light source (white LED) in which a full width at half maximum of an emission spectrum is wider than that of a monochromatic semiconductor light source. Thus, it is possible to reduce an effect of a gap change on an output signal of the encoder and make positional adjustment easier, thereby improving misalignment characteristics.

摘要翻译： 提供了一种光电编码器，其从光源发射到主刻度的光并且能够相对于彼此相对移动的指标，并通过主刻度和指标之间的相互作用获得光接收信号。 光电编码器使用发光光谱的半值全宽比单色半导体光源宽的非相干半导体光源（白色LED）作为光源。 因此，可以减小间隙变化对编码器的输出信号的影响，并且使位置调整更容易，从而提高不对准特性。

公开(公告)号：US20070125939A1

公开(公告)日：2007-06-07

申请号：US11566433

申请日：2006-12-04

申请人： Toru Yaku ,  Tetsuro Kiriyama

发明人： Toru Yaku ,  Tetsuro Kiriyama

IPC分类号： G01D5/36

CPC分类号： G01D5/34746

摘要： A three-grating type photoelectric encoder includes a second grating formed on a scale and first and third gratings disposed on a side of a detector. A part of at least the first grating is shifted in a direction of a measurement axis by P/(2n) (wherein P is a grating pitch, n is the order of a harmonic component to be removed) in order to remove a harmonic component of the nth order. This encoder can be improved with high accuracy by removing harmonic components without increasing manufacturing costs.

摘要翻译： 三光栅型光电编码器包括形成在刻度上的第二光栅和设置在检测器一侧的第一和第三光栅。 至少第一光栅的一部分在测量轴的方向上偏移P /（2n）（其中P是光栅间距，n是要去除的谐波分量的次数），以便去除谐波分量 的第n个顺序。 该编码器可以通过去除谐波分量而高精度地提高，而不增加制造成本。

公开(公告)号：US5440501A

公开(公告)日：1995-08-08

申请号：US74952

申请日：1993-06-10

申请人： Toshitaka Shimomura ,  Satoshi Adachi ,  Toru Yaku ,  Tatsuhiko Matsuura ,  Osamu Kawatoko

发明人： Toshitaka Shimomura ,  Satoshi Adachi ,  Toru Yaku ,  Tatsuhiko Matsuura ,  Osamu Kawatoko

IPC分类号： G01D5/241 ,  G01B3/20 ,  G01B3/18

CPC分类号： G01D5/2415

摘要： A capacitance-type measuring device for absolute measurement of positions is disclosed, which comprises a displacement sensor having a fixed element and a movable element, the movable element being capacitance-coupled to the fixed element and relatively movable against the fixed element, the displacement sensor being adapted to output signals corresponding to relative positions of the movable element against the fixed element, a signal processing circuit for processing the output signals of the displacement sensor and outputting an absolute measurement value corresponding to displacement of the movable element against the fixed element, a control circuit for controlling the operations of the displacement sensor and the signal processing circuit, and a power supply for supplying electric power to the displacement sensor, the signal processing circuit, and the control circuit, wherein the control circuit activates the signal processing circuit at a suitable interval so as to perform an intermittent measurement operation.

摘要翻译： 公开了一种用于绝对测量位置的电容型测量装置，其包括具有固定元件和可移动元件的位移传感器，该可移动元件电容耦合到固定元件并相对于固定元件相对移动，位移传感器 适于将对应于可移动元件相对于固定元件的相对位置的信号输出;信号处理电路，用于处理位移传感器的输出信号，并输出对应于可移动元件相对于固定元件的位移的绝对测量值; 用于控制位移传感器和信号处理电路的操作的控制电路，以及用于向位移传感器，信号处理电路和控制电路供电的电源，其中控制电路在信号处理电路 适当的间隔，以便执行i 不间断的测量操作。

公开(公告)号：US08476577B2

公开(公告)日：2013-07-02

申请号：US12955744

申请日：2010-11-29

申请人： Tatsuya Nagahama ,  Miyako Mizutani ,  Toru Yaku

发明人： Tatsuya Nagahama ,  Miyako Mizutani ,  Toru Yaku

IPC分类号： G01D5/34

CPC分类号： G01D5/34715

摘要： A miniaturized optical encoder capable of obtaining a sufficient amount of light in the light receiving element is provided. An optical encoder 1 includes a scale 2 having scale markings 21 and a readhead 3 having a light source 31 that emits light to the scale 2, a scale-side lens 32 that transmits the light emitted from the light source 31 to the scale 2, and a light receiving element 33 that receives the light that has been reflected by the scale 2 and that has passed through the scale-side lens 32. The light source 31 is arranged between the scale-side lens 32 and the light receiving element 33, and a distance between the light source 31 and the scale-side lens 32 is set to be a focal distance fs of the scale-side lens 32. An optical axis Lsrc of the light source 31 is matched with an optical axis Ls of the scale-side lens 32 in a reading direction of the scale markings 21 and is separated from an optical axis Ls of the scale-side lens 32 by a predetermined distance D in a direction perpendicular to the reading direction of the scale markings 21.

摘要翻译： 提供能够在光接收元件中获得足够量的光的小型化光学编码器。 光学编码器1包括具有刻度标记21的标尺2和具有向标尺2发光的光源31的读取头3，将从光源31发射的光透射到标尺2的刻度侧透镜32， 以及受光元件33，其接收由标尺2反射并且已经通过刻度侧透镜32的光。光源31配置在刻度侧透镜32与受光元件33之间， 并且光源31和刻度侧透镜32之间的距离被设置为刻度侧透镜32的焦距fs。光源31的光轴Lsrc与刻度尺透镜32的光轴Ls匹配 在透镜32的尺寸标记21的读取方向上，与标尺侧透镜32的光轴Ls在垂直于刻度标记21的读取方向的方向上隔开预定的距离D。

公开(公告)号：US20110233391A1

公开(公告)日：2011-09-29

申请号：US12956992

申请日：2010-11-30

申请人： Eric Herbert Altendorf ,  Tatsuya Nagahama ,  Miyako Mizutani ,  Toru Yaku

发明人： Eric Herbert Altendorf ,  Tatsuya Nagahama ,  Miyako Mizutani ,  Toru Yaku

IPC分类号： G01D5/34

CPC分类号： G01D5/34

摘要： A miniaturized optical encoder capable of obtaining a sufficient amount of light in the light receiving element is provided. An optical encoder 1 includes a scale 2 having a scale track 2′ and a readhead 3 having a light source 31 that emits light to the scale track 2′, a scale-side lens 32 that transmits the light emitted from the light source 31 to the scale track 2′, and a light receiving element 33 that receives the light reflected by the scale track 2′ through the scale-side lens 32. The light source 31 is arranged between the scale-side lens 32 and the light receiving element 33. An optical axis Lsrc of the light source 31 is matched with an optical axis Ls of the scale-side lens 32 in a reading direction of the scale 2 and is separated from an optical axis Ls of the scale-side lens 32 by a predetermined distance D in a direction perpendicular to the reading direction of the scale 2.

摘要翻译： 提供能够在光接收元件中获得足够量的光的小型化光学编码器。 光学编码器1包括具有刻度轨道2'的标尺2和具有向标尺轨道2'发射光的光源31的读取头3，将从光源31发射的光透射到比例侧透镜32 刻度轨道2'，以及光接收元件33，其接收由刻度轨道2'反射的光通过刻度侧透镜32.光源31配置在刻度侧透镜32与受光元件33之间 光标31的光轴Lsrc在刻度尺2的读取方向上与刻度侧透镜32的光轴Ls匹配，并且与标尺侧透镜32的光轴Ls分离预定的 距离D与标尺2的读取方向垂直的方向。

公开(公告)号：US20110031383A1

公开(公告)日：2011-02-10

申请号：US12535561

申请日：2009-08-04

申请人： Joseph D. Tobiason ,  Toru Yaku ,  Emi Kaneko ,  Eric H. Altendorf

发明人： Joseph D. Tobiason ,  Toru Yaku ,  Emi Kaneko ,  Eric H. Altendorf

IPC分类号： G01D5/34

CPC分类号： G01D5/34

摘要： A method and apparatus for suppressing loss of scale image contrast due to interference effects from optical path length differences, including lens profile aberrations, are provided in a displacement sensing optical encoder that uses a telecentric imaging configuration. According to the invention, the encoder is configured such that the image light that reaches the detector comprises symmetric ray bundles concentrated symmetrically on opposite sides of the optical axis center at the limiting aperture of the telecentric imaging configuration. Central ray bundles, and/or other ray bundles that have an optical path lengths significantly different than the operational symmetric ray bundles are prevented or blocked. As a result destructive interference is prevented and image contrast is improved.

摘要翻译： 在使用远心成像配置的位移感测光学编码器中提供了一种用于抑制由于光程长度差异造成的干涉影响造成的尺度图像对比度损失的方法和装置，包括透镜轮廓像差。 根据本发明，编码器被配置为使得到达检测器的图像光包括在远心成像配置的限制孔径处对称地集中在光轴中心的相对侧上的对称光束。 防止或阻止具有与操作对称光束的显着不同的光路长度的中心线束和/或其他光束束。 因此，防止了破坏性干扰并且改善了图像对比度。

公开(公告)号：US07485845B2

公开(公告)日：2009-02-03

申请号：US11566433

申请日：2006-12-04

申请人： Toru Yaku ,  Tetsuro Kiriyama

发明人： Toru Yaku ,  Tetsuro Kiriyama

IPC分类号： G01D5/34

CPC分类号： G01D5/34746

摘要： A three-grating type photoelectric encoder includes a second grating formed on a scale and first and third gratings disposed on a side of a detector. A part of at least the first grating is shifted in a direction of a measurement axis by P/(2n) (wherein P is a grating pitch, n is the order of a harmonic component to be removed) in order to remove a harmonic component of the nth order. This encoder can be improved with high accuracy by removing harmonic components without increasing manufacturing costs.

摘要翻译： 三光栅型光电编码器包括形成在刻度上的第二光栅和设置在检测器一侧的第一和第三光栅。 至少第一光栅的一部分在测量轴的方向上偏移P /（2n）（其中P是光栅间距，n是要去除的谐波分量的次数），以便去除谐波分量 的第n个顺序。 该编码器可以通过去除谐波分量而高精度地提高，而不增加制造成本。