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公开(公告)号：US20070215797A1
公开(公告)日：2007-09-20
申请号：US10599105
申请日：2005-03-18
IPC分类号： G01D5/34
CPC分类号： G01D5/38 , G01D5/00 , G01D5/34715 , G01D5/36
摘要： A photoelectric encoder has a telecentric optical system in which a first lens and an aperture located at a focal position of the first lens are interposed between a main scale and a photoreceptor. At least a second lens is interposed between the aperture and the photoreceptor with a focus of the second lens on the aperture, thereby constituting a bilateral telecentric optical system. This makes it possible to improve the signal detection efficiency and increase the assembly tolerance.
摘要翻译： 光电编码器具有远心光学系统，其中位于第一透镜的焦点位置处的第一透镜和孔插入主刻度尺和感光体之间。 在孔和感光体之间插入至少第二透镜，第二透镜的焦点在孔上，从而构成双向远心光学系统。 这使得可以提高信号检测效率并增加组装公差。
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公开(公告)号：US07435945B2
公开(公告)日：2008-10-14
申请号：US11475481
申请日：2006-06-26
CPC分类号： G01D5/38 , G01D5/00 , G01D5/34715 , G01D5/36
摘要： A displacement measuring device including a scale, and an optical readhead including an index pattern and a light receiving element is provided. A bright/dark pattern arising from a scale grating is detected by the readhead to measure displacement. In various embodiments, a magnification of the pattern is adjusted by the spacing between at least a lens element, aperture element, and detection plane of the readhead. An aperture can be designed to provide a diffraction-limited telecentric imaging configuration that filters an image of the scale grating to provide a sinusoidal intensity pattern that supports highly interpolated measurements. An aperture dimension, selected in relation to the grating pitch and other parameters, can provide a desirable combination of readhead operating characteristics including one or more of a desired depth of field; degree of spatial filtering; and optical signal power.
摘要翻译： 提供了包括刻度的位移测量装置和包括索引图案和光接收元件的光学读取头。 通过读取头检测由刻度光栅引起的亮/暗图案以测量位移。 在各种实施例中，通过至少透镜元件，光圈元件和读取头的检测平面之间的间隔来调整图案的放大倍数。 可以设计孔径以提供衍射限制的远心成像配置，其过滤尺度光栅的图像以提供支持高度内插测量的正弦强度图案。 相对于光栅间距和其他参数选择的孔径尺寸可以提供包括期望景深中的一个或多个的读取头操作特性的期望组合; 空间滤波度; 和光信号功率。
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公开(公告)号：US07570433B2
公开(公告)日：2009-08-04
申请号：US10599105
申请日：2005-03-18
申请人： Toshitaka Shimomura , Shingo Nihommori , Miyako Mizutani , Eric Herbert Altendorf , Joseph Daniel Tobiason
发明人： Toshitaka Shimomura , Shingo Nihommori , Miyako Mizutani , Eric Herbert Altendorf , Joseph Daniel Tobiason
IPC分类号： G02B13/22
CPC分类号： G01D5/38 , G01D5/00 , G01D5/34715 , G01D5/36
摘要： A photoelectric encoder has a telecentric optical system in which a first lens and an aperture located at a focal position of the first lens are interposed between a main scale and a photoreceptor. At least a second lens is interposed between the aperture and the photoreceptor with a focus of the second lens on the aperture, thereby constituting a bilateral telecentric optical system. This makes it possible to improve the signal detection efficiency and increase the assembly tolerance.
摘要翻译： 光电编码器具有远心光学系统，其中位于第一透镜的焦点位置处的第一透镜和孔插入主刻度尺和感光体之间。 在孔和感光体之间插入至少第二透镜，第二透镜的焦点在孔上，从而构成双向远心光学系统。 这使得可以提高信号检测效率并增加组装公差。
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公开(公告)号：US07186969B2
公开(公告)日：2007-03-06
申请号：US10804636
申请日：2004-03-19
申请人： Toshitaka Shimomura , Shingo Nihommori , Miyako Mizutani , Eric Herbert Altendorf , Joseph Daniel Tobiason
发明人： Toshitaka Shimomura , Shingo Nihommori , Miyako Mizutani , Eric Herbert Altendorf , Joseph Daniel Tobiason
CPC分类号： G01D5/38 , G01D5/00 , G01D5/34715 , G01D5/36
摘要： A displacement measuring device including a scale, and an optical readhead including an index pattern and a light receiving element is provided. A bright/dark pattern arising from a scale grating is detected by the readhead to measure displacement. In various embodiments, a magnification of the pattern is adjusted by the spacing between at least a lens element, aperture element, and detection plane of the readhead. An aperture can be designed to provide a diffraction-limited telecentric imaging configuration that filters an image of the scale grating to provide a sinusoidal intensity pattern that supports highly interpolated measurements. An aperture dimension, selected in relation to the grating pitch and other parameters, can provide a desirable combination of readhead operating characteristics including one or more of a desired depth of field; degree of spatial filtering; and optical signal power.
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公开(公告)号：US20070018084A1
公开(公告)日：2007-01-25
申请号：US11475481
申请日：2006-06-26
IPC分类号： G01D5/34
CPC分类号： G01D5/38 , G01D5/00 , G01D5/34715 , G01D5/36
摘要： A displacement measuring device including a scale, and an optical readhead including an index pattern and a light receiving element is provided. A bright/dark pattern arising from a scale grating is detected by the readhead to measure displacement. In various embodiments, a magnification of the pattern is adjusted by the spacing between at least a lens element, aperture element, and detection plane of the readhead. An aperture can be designed to provide a diffraction-limited telecentric imaging configuration that filters an image of the scale grating to provide a sinusoidal intensity pattern that supports highly interpolated measurements. An aperture dimension, selected in relation to the grating pitch and other parameters, can provide a desirable combination of readhead operating characteristics including one or more of a desired depth of field; degree of spatial filtering; and optical signal power.
摘要翻译： 提供了包括刻度的位移测量装置和包括索引图案和光接收元件的光学读取头。 通过读取头检测由刻度光栅引起的亮/暗图案以测量位移。 在各种实施例中，通过至少透镜元件，光圈元件和读取头的检测平面之间的间隔来调整图案的放大倍数。 可以设计孔径以提供衍射限制的远心成像配置，其过滤尺度光栅的图像以提供支持高度内插测量的正弦强度图案。 相对于光栅间距和其他参数选择的孔径尺寸可以提供包括期望景深中的一个或多个的读取头操作特性的期望组合; 空间滤波度; 和光信号功率。
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6.发明授权Energy saving capacitance type measuring device for absolute measurement of positions 失效用于绝对测量位置的节能电容型测量装置
公开(公告)号：US5440501A
公开(公告)日：1995-08-08
申请号：US74952
申请日：1993-06-10
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。
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7.发明授权公开(公告)号：US06668467B2
公开(公告)日：2003-12-30
申请号：US09907771
申请日：2001-07-19
IPC分类号： G01B1122
CPC分类号： G01D5/347 , G01D5/34715 , Y10T29/49002 , Y10T29/49007
摘要： There is provided a displacement measuring apparatus efficiently productive and easily applicable to high precise measurement of displacement with contact probe detection for hardly-measurable works in the art such as micro-works and deep parts in complicated structures. A scale member includes a spindle and a scale both supported by a parallel leaf spring movable on a scale substrate. The spindle is arranged in coaxial with a measurement axis in the scale member. The L & S slit-processed scale is integrated with the spindle and supported by the parallel leaf spring to move together with the spindle along the measurement axis. The spindle, scale and parallel leaf spring are coupled to the scale substrate interposing an anchor of the parallel leaf spring therebetween. The spindle, scale and parallel leaf spring are formed in an integral structure and only the anchor contacts the scale substrate while the spindle, scale and parallel leaf spring slightly float from the scale substrate. A displacement sensor comprises a sensor substrate arranged opposite to the scale substrate. A light source and a photosensitive device are located on the sensor substrate.
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公开(公告)号：US06573707B2
公开(公告)日：2003-06-03
申请号：US09943125
申请日：2001-08-30
IPC分类号： G01B700
CPC分类号： G01D5/2086
摘要： A scale and a detecting head each include input/output connectors. Either of the input/output connectors is connected to receiving-side connector. By connecting the receiving-side connector to either of the scale and the detecting head, which is fixed in use, there is no change that a receiving-side cable will be disconnected by movement of the counterpart of the fixed member. This results in improvement of the reliability. Additionally, device is operable at high speed since the cable does not restrict motion of the movable member.
摘要翻译： 刻度和检测头各自包括输入/输出连接器。 输入/输出连接器中的任一个连接到接收侧连接器。 通过将接收侧连接器连接到在使用中固定的刻度尺和检测头中的任一个，接收侧电缆将不会因固定部件的对应物的移动而被断开。 这导致可靠性的提高。 此外，由于电缆不限制可移动部件的运动，装置可高速操作。
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9.发明授权Photoelectric encoder having a plane mirror disposed parallel to the optical axis of a concave mirror 失效具有与凹面镜的光轴平行设置的平面镜的光电编码器
公开(公告)号：US5479010A
公开(公告)日：1995-12-26
申请号：US347149
申请日：1994-11-22
CPC分类号： G01D5/34715
摘要： A light emitting device assembled in a light transmitting type of photoelectric encoder is required to generate light having high parallelism and large quantity of light. This device uses one half of a concave mirror having a small aberration and long focal point. Hence, light radiated from a LED disposed at the focal point of the concave mirror has high parallelism. Further, using a plane mirror disposed at the optical axis of a concave mirror, light reflected with the plane mirror from a LED onto the concave mirror travels in parallel rays. Parallel rays, having a large quantity of light resulting from overlapping parallel rays, reflected from the concave mirror directly and indirectly from the light emitting element can be obtained.
摘要翻译： 需要组装在透光型光电编码器中的发光器件来产生具有高平行度和大量光的光。 该装置使用具有小像差和长焦点的凹面镜的一半。 因此，从设置在凹面镜的焦点处的LED发出的光具有高平行度。 此外，使用设置在凹面镜的光轴处的平面镜，由平面镜从LED反射到凹面镜的光以平行射线行进。 可以获得从凹面镜直接和间接地从发光元件反射的具有由重叠的平行光产生的大量光的平行光线。
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公开(公告)号：US4593473A
公开(公告)日：1986-06-10
申请号：US794972
申请日：1985-11-05
申请人： Toshitaka Shimomura
发明人： Toshitaka Shimomura
摘要： A digital display measuring apparatus including a probe which is movably installed to the body and is brought in contact with an object to be measured, an encoder which converts the displacing amount of the probe into electric signal pulse to output therefrom, a presetting device which establishes a measuring standard value in accordance with the object to be measured, a counter which counts the preset value and the electric signal pulses, and a digital display unit which displays in digital representation the measured value of the object with the basis of the counted value, wherein the presetting device comprises the preset switch which is operated at the time of establishing the preset value, and the preset memory in which an optional numerical value displayed on the digital display unit is established as the preset value by the operation of the preset switch, and displays in digital representation the measured value of the object on the digital display unit with the basis of this preset value.
摘要翻译： PCT No.PCT / JP84 / 00092 Sec。 371日期：1984年9月7日 102（e）1984年9月7日PCT PCT公布1984年3月8日PCT公布。 公开号WO84 / 03559 日期：1984年9月13日。一种数字显示测量装置，包括可移动地安装到身体并与待测物体接触的探头，将探测器的位移量转换为电信号脉冲以输出的编码器 从而设置根据待测对象建立测量标准值的预设装置，对预设值和电信号脉冲进行计数的计数器，以数字显示方式显示对象的测量值的数字显示单元， 计数值的基础，其中预设装置包括在建立预设值时操作的预设开关，并且其中以数字显示单元显示的可选数值建立为预设值的预设存储器作为预设值，由 预置开关的操作，并以数字显示数字显示单元上的物体的测量值 他是这个预设值的基础。
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