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1. 发明授权

US5604345A Optical encoder having a combination of a uniform grating and a non-uniform grating 失效
标题翻译：光学编码器具有均匀光栅和不均匀光栅的组合
公开(公告)号：US5604345A
公开(公告)日：1997-02-18
申请号：US559113
申请日：1995-11-16
申请人： Tatsuhiko Matsuura
发明人： Tatsuhiko Matsuura
IPC分类号： G01D5/36 , G01B11/14
CPC分类号： G01D5/366
摘要： A main scale 11 and an index scale 12 are arranged in parallel with each other so as to be relatively movable. A light source 10 for irradiating collimated light on the main scale 11 is provided above the main scale 11. A light detecting devices 13a and 13b for detecting the amount of light which pass trough the index scale 12 are provided below the index scale 12. The main scale 11 has an uniform grating which consist of transmitting portions 14 and non-transmitting portions 15 which are formed with a uniform width and alternately arranged by uniform pitch P. The index scale 12 has non-uniform grating portions 12a and 12b whose phase are mutually shifted 90 degrees. Transmitting portions 16 and non-transmitting portions 17 of the non-uniform grating portions are arranged at the same pitch as the main scale 11. Each width of the non-transmitting portions 17 is equal to each width of sliced portions of a sine waveform sliced by 10 slice levels, the sine waveform is represented bottom-to-bottom and whose wavelength is equal to one pitch of the uniform grating. The non-uniform gratings 12a and 12b substantially work as the sine wave gratings, so that an output signal excluding the harmonic components distortion can be obtained.
摘要翻译：主刻度尺11和索引刻度12彼此平行地布置成相对移动。用于照射主标尺11上的准直光的光源10设置在主标尺11上方。用于检测通过指标标尺12的光量的光检测装置13a和13b设置在指标标尺12的下方。主标尺11具有均匀的光栅，其由透射部分14和非透射部分15组成，透光部分14和非透射部分15形成均匀的宽度并且以均匀的间距P交替排列。指数标度12具有不均匀的光栅部分12a和12b，相互偏移90度。不均匀光栅部分的发射部分16和非透射部分17以与主刻度11相同的间距排列。非透射部分17的每个宽度等于被切片的正弦波形的切片部分的每个宽度以10片级别，正弦波形从底到底表示，其波长等于均匀光栅的一个间距。非均匀光栅12a和12b基本上作为正弦波光栅工作，从而可以获得排除谐波分量失真的输出信号。

2. 发明授权

US5440501A Energy saving capacitance type measuring device for absolute measurement of positions 失效
标题翻译：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
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。

3. 发明授权

US5889280A Apparatus for measuring displacement 失效
标题翻译：用于测量位移的装置
公开(公告)号：US5889280A
公开(公告)日：1999-03-30
申请号：US786672
申请日：1997-01-21
申请人： Tatsuhiko Matsuura
发明人： Tatsuhiko Matsuura
IPC分类号： G01D5/245 , G01D5/244 , G01D5/36 , H03M1/30 , G01B11/00 , G01D5/347 , G02B5/18
CPC分类号： G01D5/366 , H03M1/30
摘要： A transmission type encoder is disclosed, which comprises a main scale, a light source that radiates collimated light to the main scale, and a photodiode array that also functions as an index scale. The main scale has a rectangular grating in which light transmitting portions and light non-transmitting portions are arranged at pitch P, and each width of the light transmitting portions is set to 2p/3, whereby a third harmonic distortion in an output signal can be removed.
摘要翻译：公开了一种传输型编码器，其包括主刻度，将准直光照射到主刻度的光源以及也用作索引刻度的光电二极管阵列。主刻度具有矩形光栅，其中透光部分和光非透射部分以间距P布置，并且光透射部分的每个宽度被设置为2p / 3，由此输出信号中的三次谐波失真可以是删除。

4. 发明授权

US5774219A Reflection-type optical encoder with light receiving array 失效
标题翻译：具有光接收阵列的反射式光学编码器
公开(公告)号：US5774219A
公开(公告)日：1998-06-30
申请号：US786668
申请日：1997-01-21
申请人： Tatsuhiko Matsuura
发明人： Tatsuhiko Matsuura
IPC分类号： G01B11/00 , G01D5/36 , G01D5/38 , H03M1/30 , G01B9/02
CPC分类号： H03M1/301 , G01D5/38
摘要： A reflection-type main scale G1 is disposed on a first member 10. A diffused light source 40, a transmission-type light source index scale G2, and a photodiode array PDA are disposed on a second member 20. The diffused light source 40 irradiates the main scale G1 through the index scale G2 for generating a reflected image pattern. The photodiode array PDA detects the reflected image pattern obtained from the main scale G1. The photodiode array PDA and the index scale G2 are integrally united in such a manner that the receiving surface of the photodiode array PDA and the grating surface of the index scale G2 are aligned in a plane.
摘要翻译：反射型主刻度G1设置在第一构件10上。扩散光源40，透射型光源指示标尺G2和光电二极管阵列PDA设置在第二构件20上。漫射光源40照射通过用于产生反射图像图案的索引刻度G2的主刻度G1。光电二极管阵列PDA检测从主刻度G1获得的反射图像图案。光电二极管阵列PDA和指示标尺G2以使得光电二极管阵列PDA的接收表面和指示标尺G2的光栅表面在平面中对准的方式被一体地组合。

5. 发明授权

US5479010A Photoelectric encoder having a plane mirror disposed parallel to the optical axis of a concave mirror 失效
标题翻译：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
申请人： Toshitaka Shimomura , Tatsuhiko Matsuura
发明人： Toshitaka Shimomura , Tatsuhiko Matsuura
IPC分类号： G01D5/36 , G01D5/347 , G01D5/34
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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