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1. 发明授权

US10088340B2 Telecentric photoelectric encoder including aperture in face of optical element 有权
公开(公告)号：US10088340B2
公开(公告)日：2018-10-02
申请号：US15262412
申请日：2016-09-12
申请人： Mitutoyo Corporation
发明人： Kimitoshi Ono
IPC分类号： G01D5/347 , H04N5/225 , G02B5/18 , G02B13/22 , G02B3/00
摘要： A photoelectric encoder of the present invention includes: a scale which includes a grid scale; a light emitting portion which irradiates light toward the scale; a light receiving portion which detects an image of the grid scale of the scale; and a telecentric optical unit which is provided between the scale and the light receiving portion and forms the image of the grid scale on the light receiving portion, wherein the telecentric optical unit includes a first optical element which is disposed near the scale, a second optical element which is disposed near the light receiving portion in relation to the first optical element and is disposed so that a gap is formed between the second optical element and the first optical element, and an aperture which is provided in at least one of a face near the second optical element in the first optical element and a face near the first optical element in the second optical element.

2. 发明公开

US20240230378A1 MULTI-DEGREE-OF-FREEDOM DISPLACEMENT MEASURING DEVICE AND MULTI-DEGREE-OF-FREEDOM DISPLACEMENT MEASURING METHOD 审中-公开
公开(公告)号：US20240230378A1
公开(公告)日：2024-07-11
申请号：US18617719
申请日：2024-03-27
申请人： MITUTOYO CORPORATION
发明人： Yoshiaki Kato , Kimitoshi Ono , Shunsuke Tanaka
IPC分类号： G01D5/20 , G01B7/14
CPC分类号： G01D5/2086 , G01B7/14
摘要： A multi-degree-of-freedom displacement measuring device includes a rotary scale that has a scale pattern including a plurality of patterns that are arranged around a first rotation axis and arrayed along a circumference direction of the rotary scale, a detection head group including a plurality of detection heads, each of which is provided around the first rotation axis, is arranged on an installation face facing the rotary scale, and is configured to detect each of the plurality of patterns from the scale pattern, and a calculator configured to, based on detection values acquired by the plurality of detection heads, calculate a relative rotation angle around the first rotation axis, and calculate at least one of a relative movement amount in a direction along the first rotation axis and a relative movement amount in a direction along a second rotation axis orthogonal to the first rotation axis.

3. 发明申请

US20220412722A1 OPTICAL SENSOR AND GEOMETRY MEASUREMENT APPARATUS 有权
公开(公告)号：US20220412722A1
公开(公告)日：2022-12-29
申请号：US17744220
申请日：2022-05-13
申请人： Mitutoyo Corporation
发明人： Kimitoshi Ono
IPC分类号： G01B11/03 , G02B26/10
摘要： An optical sensor includes a radiation part that irradiates an object to be measured with line shaped light; and an imaging part that receives line shaped light reflected by the object to be measured and captures an image of the object to be measured in a predetermined exposure time. The radiation part includes a light generation part that generates the line shaped light, and a light vibration part that irradiates the object to be measured with the line shaped light generated by the light generation part while vibrating the line shaped light in a length direction during the exposure time.

4. 发明授权

US10234310B2 Light-emitting unit, light-emitting and light-receiving unit and photoelectric encoder 有权
公开(公告)号：US10234310B2
公开(公告)日：2019-03-19
申请号：US15601333
申请日：2017-05-22
申请人： MITUTOYO CORPORATION
发明人： Kimitoshi Ono
IPC分类号： G01D5/30 , G01D5/347
摘要： A light-emitting unit includes: a light source; and a reflector having reflection faces of first and second partial paraboloids, the first and second partial paraboloids being spaced from each other in an optical axis direction of the light source, the first and second partial paraboloids having a focal point on the light source, wherein: the second partial paraboloid is between the light source and the first partial paraboloid in the optical axis direction; the second partial paraboloid has a coefficient different from that of the first partial paraboloid; and the second partial paraboloid is positioned on a reflection direction side of a light from the light source reflected by the first partial paraboloid, with respect to a plane that is obtained on a presumption that the first partial paraboloid is extended to the light source side in accordance with the coefficient of the first partial paraboloid.

5. 发明授权

US11467384B2 Telecentric optical apparatus 有权
公开(公告)号：US11467384B2
公开(公告)日：2022-10-11
申请号：US16679731
申请日：2019-11-11
申请人： Mitutoyo Corporation
发明人： Kenji Okabe , Tatsuya Nagahama , Toru Yaku , Kimitoshi Ono
IPC分类号： G02B13/00 , G02B13/22 , G02B5/00 , G02B3/00 , G02B7/00 , G02B7/02 , G02B5/02 , G02B5/18
摘要： A telecentric optical apparatus that is capable of suppressing an increase in the number of components as well as achieving high precision optical axis alignment, is provided. The telecentric optical apparatus of the present invention is characterized in that it is provided with: a first telecentric lens surface that is provided on an object side; a second telecentric lens surface that is provided on an image side and that shares a focus position with the first telecentric lens surface; and an optical path trimming part that is provided, between the first telecentric lens surface and the second telecentric lens surface, in an outside region, which is located on a side further out than a light passing region having a center thereof located at the focus position, and that changes an optical path such that a light beam incident on the outside region is prevented from contributing to image formation.

6. 发明授权

US10520710B2 Telecentric optical apparatus 有权
公开(公告)号：US10520710B2
公开(公告)日：2019-12-31
申请号：US15139543
申请日：2016-04-27
申请人： Mitutoyo Corporation
发明人： Kenji Okabe , Tatsuya Nagahama , Toru Yaku , Kimitoshi Ono
IPC分类号： G02B13/22
摘要： A telecentric optical apparatus that is capable of suppressing an increase in the number of components as well as achieving high precision optical axis alignment, is provided. The telecentric optical apparatus of the present invention is characterized in that it is provided with: a first telecentric lens surface that is provided on an object side; a second telecentric lens surface that is provided on an image side and that shares a focus position with the first telecentric lens surface; and an optical path trimming part that is provided, between the first telecentric lens surface and the second telecentric lens surface, in an outside region, which is located on a side further out than a light passing region having a center thereof located at the focus position, and that changes an optical path such that a light beam incident on the outside region is prevented from contributing to image formation.

7. 发明申请

US20170343388A1 LIGHT-EMITTING UNIT, LIGHT-EMITTING AND LIGHT-RECEIVING UNIT AND PHOTOELECTRIC ENCODER 审中-公开
公开(公告)号：US20170343388A1
公开(公告)日：2017-11-30
申请号：US15601333
申请日：2017-05-22
申请人： MITUTOYO CORPORATION
发明人： Kimitoshi Ono
IPC分类号： G01D5/30 , G01D5/347
CPC分类号： G01D5/305 , G01D5/34707 , G01D5/34715
摘要： A light-emitting unit includes: a light source; and a reflector having reflection faces of first and second partial paraboloids, the first and second partial paraboloids being spaced from each other in an optical axis direction of the light source, the first and second partial paraboloids having a focal point on the light source, wherein: the second partial paraboloid is between the light source and the first partial paraboloid in the optical axis direction; the second partial paraboloid has a coefficient different from that of the first partial paraboloid; and the second partial paraboloid is positioned on a reflection direction side of a light from the light source reflected by the first partial paraboloid, with respect to a plane that is obtained on a presumption that the first partial paraboloid is extended to the light source side in accordance with the coefficient of the first partial paraboloid.

8. 发明授权

US10416002B2 Light source device and photoelectric encoder including the same 有权
公开(公告)号：US10416002B2
公开(公告)日：2019-09-17
申请号：US15784803
申请日：2017-10-16
申请人： Mitutoyo Corporation
发明人： Miyako Mizutani , Kimitoshi Ono , Fujio Maeda
IPC分类号： G01D5/347
摘要： Provided are a light source device that can achieve higher accuracy while maintaining reliability by reducing stray light, and a photoelectric encoder including the same. A light source device 2 includes a translucent member 10 configured to accommodate a light emitting unit 5 thereinside, and to make light emitted from the light emitting unit 5, into parallel light. The translucent member 10 includes an optical axis plane 11, an orthogonal plane 12, a reflection portion configured to make light from the light emitting unit 5, into parallel light, and a connection portion 14 formed by the optical axis plane 11 and the orthogonal plane 12 connecting to each other, and having a curved surface. A central axis AX of the curved surface is in an outside region of the translucent member 10, and a region between the optical axis plane 11 and the orthogonal plane 12.

9. 发明申请

US20170074686A1 PHOTOELECTRIC ENCODER 审中-公开
标题翻译：光电编码器
公开(公告)号：US20170074686A1
公开(公告)日：2017-03-16
申请号：US15262412
申请日：2016-09-12
申请人： Mitutoyo Corporation
发明人： Kimitoshi Ono
IPC分类号： G01D5/347 , H04N5/225 , G02B3/00 , G02B13/22 , G02B5/18
CPC分类号： G01D5/34715 , G01D5/34746 , G02B3/0062 , G02B5/18 , G02B13/22 , H04N5/2256
摘要： A photoelectric encoder of the present invention includes: a scale which includes a grid scale; a light emitting portion which irradiates light toward the scale; a light receiving portion which detects an image of the grid scale of the scale; and a telecentric optical unit which is provided between the scale and the light receiving portion and forms the image of the grid scale on the light receiving portion, wherein the telecentric optical unit includes a first optical element which is disposed near the scale, a second optical element which is disposed near the light receiving portion in relation to the first optical element and is disposed so that a gap is formed between the second optical element and the first optical element, and an aperture which is provided in at least one of a face near the second optical element in the first optical element and a face near the first optical element in the second optical element.
摘要翻译：本发明的光电编码器包括：包括栅格的刻度; 将光朝规模照射的发光部; 光接收部分，其检测标尺的网格尺度的图像; 以及远心光学单元，其设置在所述刻度尺和所述光接收部之间，并且在所述光接收部分上形成所述格栅的图像，其中所述远心光学单元包括设置在所述刻度附近的第一光学元件，第二光学单元元件，其相对于第一光学元件设置在光接收部分附近，并且被布置成使得在第二光学元件和第一光学元件之间形成间隙，并且孔被设置在靠近第一光学元件中的第二光学元件和第二光学元件中的第一光学元件附近的面。

10. 发明申请

US20160349490A1 TELECENTRIC OPTICAL APPARATUS 审中-公开
标题翻译：电子光学设备
公开(公告)号：US20160349490A1
公开(公告)日：2016-12-01
申请号：US15139543
申请日：2016-04-27
申请人： Mitutoyo Corporation
发明人： Kenji Okabe , Tatsuya Nagahama , Toru Yaku , Kimitoshi Ono
IPC分类号： G02B13/22
摘要： A telecentric optical apparatus that is capable of suppressing an increase in the number of components as well as achieving high precision optical axis alignment, is provided. The telecentric optical apparatus of the present invention is characterized in that it is provided with: a first telecentric lens surface that is provided on an object side; a second telecentric lens surface that is provided on an image side and that shares a focus position with the first telecentric lens surface; and an optical path trimming part that is provided, between the first telecentric lens surface and the second telecentric lens surface, in an outside region, which is located on a side further out than a light passing region having a center thereof located at the focus position, and that changes an optical path such that a light beam incident on the outside region is prevented from contributing to image formation.
摘要翻译：提供了能够抑制部件数量增加以及实现高精度光轴对准的远心光学装置。本发明的远心光学装置的特征在于具有：设置在物体侧的第一远心透镜面; 第二远心透镜表面，其设置在图像侧并与第一远心透镜表面共享焦点位置; 以及在位于第一远心透镜表面和第二远心透镜表面之间的外部区域中的光路修剪部分，该外部区域位于比位于焦点位置的中心的光通过区域更远的一侧并且改变光路，从而防止入射在外部区域上的光束对图像形成有贡献。

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