公开(公告)号：US20220171038A1

公开(公告)日：2022-06-02

申请号：US17537067

申请日：2021-11-29

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Rainer WOHLGENANNT ,  Roman KOLLER ,  Simon BESTLER ,  Marcel ROHNER

IPC: G01S7/4865 ,  G01S17/894 ,  G01S7/481

Abstract: The invention relates to a multi-beam distance measuring device, configured for timing the time-of-flight of transmission pulses by using a programmable integrated circuit, which has a plurality of parallel delay lines. Each delay line has a plurality of delay elements, which sequentially propagate an input signal of the respective delay line, wherein each of the delay elements is configured to provide a binary output as a function of the input signal. Time measurement of a signal change of a return signal is carried out by sampling binary outputs of a respective delay line and simultaneous consideration of the sampled binary outputs at a certain point in time, by further taking into account individual time delays of the delay elements.

公开(公告)号：US20200064116A1

公开(公告)日：2020-02-27

申请号：US16548596

申请日：2019-08-22

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Yves SALVADÉ ,  Sébastien LE FLOCH ,  Marcel ROHNER

IPC: G01B9/02 ,  G01S13/28 ,  G01S13/50 ,  G01S7/41 ,  G02F1/21

Abstract: A distance measuring method and device, wherein a first and a second laser radiation are generated so that the first laser radiation has a first frequency modulation and the second laser radiation has a second frequency modulation, wherein at least in sections a time derivative of the first frequency modulation is different from a time derivative of the second frequency modulation. In accordance with the invention the first and the second laser radiation are generated by modulating a base radiation by means of an electro-optical modulator, so that an output radiation comprising a carrier component and a plurality of sideband components is produced, wherein a first sideband component provides the first laser radiation and a second sideband component provides the second laser radiation.

公开(公告)号：US20230243938A1

公开(公告)日：2023-08-03

申请号：US18103268

申请日：2023-01-30

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Simon BESTLER ,  Marcel ROHNER

IPC: G01S7/4861 ,  G01S17/10 ,  G01S7/481 ,  G01S7/4865

CPC classification number: G01S7/4861 ,  G01S17/10 ,  G01S7/4816 ,  G01S7/4865

Abstract: An electro-optic distance meter according to the time-of-flight principle with a receiver chain for generating a digital signal from a received light pulse, the receiver chain comprising a photodetector, a first gain stage, in particular a transimpedance amplifier or a current-mode electronic, for converting an input current from the photodetector associated to the returned light pulse into an output voltage, a filter and an analog-to-digital converter, whereby the digital signal provides an unambiguous relationship between intensity-time delay of the optical pulse and signalshape-time delay of the electrical signal, wherefore the photodetector, the first gain stage and the analog-to-digital converter are adapted to each other such that the analog-to-digital converter remains unclipped in a linear operating range even when the first gain stage shows a non-linear time-invariant response or a well-defined time-invariant saturation response to the input current of the photodetector.

公开(公告)号：US20140368832A1

公开(公告)日：2014-12-18

申请号：US14307246

申请日：2014-06-17

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Yves SALVADÉ ,  Frank PRZYGODDA ,  Marcel ROHNER

IPC: G01B9/02 ,  G01B5/008

CPC classification number: G01B5/008 ,  G01B9/02002 ,  G01B9/02048 ,  G01B9/0207 ,  G01B9/02081 ,  G01B9/02083 ,  G01B11/026 ,  G01S7/4812 ,  G01S7/4915 ,  G01S17/32 ,  G01S17/50

Abstract: Method and systems for determining a change of distance to an object by interferometry with emitting measurement laser light from a laser diode are disclosed. The method may include receiving at least a part of the measurement laser light, superimposing the reflected measurement laser light with a reference laser light and thereby providing at an interferometric phase and determining the change of distance to the object depending on the superimposition. In some embodiments, the measurement laser light may be emitted with low coherence and broad spectral bandwidth. An emitting wavelength of the measurement laser light may be fluctuating hop-freely within the spectral bandwidth causing interferometric phase fluctuations.

Abstract translation: 公开了一种用于通过发射来自激光二极管的测量激光的干涉测量来确定到物体的距离变化的方法和系统。 该方法可以包括接收至少一部分测量激光，将反射的测量激光与参考激光重叠，从而提供干涉相位，并根据叠加来确定与物体的距离变化。 在一些实施例中，可以以低相干性和宽谱带宽发射测量激光。 测量激光的发射波长可能在光谱带宽内跳跃地波动，导致干涉相位波动。

公开(公告)号：US20230125524A1

公开(公告)日：2023-04-27

申请号：US17974058

申请日：2022-10-26

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Yves SALVADÉ ,  Markus SPRECHER ,  Peter KIPFER ,  Marcel ROHNER ,  Tim MAYER ,  Beat AEBISCHER

IPC: G01D5/30 ,  G01D18/00 ,  B25J19/02

Abstract: An image based opto-electronic encoder for a joint, the encoder having a reading head for the first part of the joint and an optical system, comprising a ball lens for the second part of the joint. The ball lens has a front surface transparent for measuring light and an at least partially reflective, structured back surface. The ball lens has -with respect to the measuring light- a refractive index of at least approximately two or an equal radially varying refractive index, such that a bundle of measuring light rays reflected inside the ball lens from a point of the back surface of the ball lens forms at least approximately a parallel bundle after getting refracted at the front surface of the ball lens. The reading head and the ball lens are rotatable relative to each other in at least two degrees of freedom.

公开(公告)号：US20240200924A1

公开(公告)日：2024-06-20

申请号：US18525364

申请日：2023-11-30

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Marcel ROHNER ,  Vincent MICHEL ,  Nikolay KHANENYA

IPC: G01B7/016

CPC classification number: G01B7/016

Abstract: A touch trigger probe with a capacitive sensor for measuring three degrees of freedom with a sensor base and a sensor head which is spaced to the sensor base by a flexible suspension and can be capacitively coupled to the sensor base, whereby the suspension enables a relative movement in three degrees of freedom of the sensor head with respect to the sensor base following a displacement (d) of a probe tip when contacting the object with the probe tip. The suspension and the sensor are adapted to each other in such a way that there is a bijective map between the three degrees of freedom measured by the sensor and all three translational degrees of freedom of the displacement (d) of the probe tip center (C).

公开(公告)号：US20200041311A1

公开(公告)日：2020-02-06

申请号：US16532171

申请日：2019-08-05

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Marcel ROHNER ,  Lukas BAUMANN ,  Michael REITERER ,  Claudio ISELI ,  Alberto TARIZZO

IPC: G01D5/241

Abstract: A capacitive distance sensor for determining distances from an object, wherein the distance sensor has at least one sensor electrode and at least one compensation electrode. Deviations from an ideal parallel orientation of distance sensor and object and/or errors caused by capacitive edge effects can be compensated by means of the compensation electrode.

公开(公告)号：US20160161292A1

公开(公告)日：2016-06-09

申请号：US14958802

申请日：2015-12-03

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Marcel ROHNER ,  Ingo BEDNAREK ,  Rainer WOHLGENANNT ,  Lukas BAUMANN

IPC: G01D5/241

CPC classification number: G01D5/2415

Abstract: Some embodiments of the invention include a capacitive linear encoder for determining positions comprising a scale and a read head for capacitively scanning the scale, wherein scale and read head are movable relative to one another. The scale has at least one, preferably capacitive, position reference marker. On the basis of the position references provided by the capacitive position reference marker, the positions are locatable in absolute terms and verifiable.

Abstract translation: 本发明的一些实施例包括电容线性编码器，用于确定包括刻度的位置和用于电容扫描刻度的读头，其中刻度和读取头可相对于彼此移动。 刻度具有至少一个，优选电容的位置参考标记。 基于由电容位置参考标记提供的位置参考，位置可以绝对值定位并可验证。

公开(公告)号：US20160161291A1

公开(公告)日：2016-06-09

申请号：US14958836

申请日：2015-12-03

Applicant: HEXAGON TECHNOLOGY CENTER GMBH

Inventor： Marcel ROHNER ,  Ingo BEDNAREK ,  Lukas BAUMANN ,  Rainer WOHLGENANNT

IPC: G01D5/24

CPC classification number: G01D5/2415

Abstract: Some embodiments of the invention include an absolute capacitive rotary encoder comprising a first disk, which is rotatable relative a second disk, and a first sensor ring and a second sensor ring. The first and the second sensor ring each have a multiplicity of first coupling electrodes and second coupling electrodes capacitively coupling to one another. The first coupling electrodes of a respective sensor ring have different coupling signal phases. The first sensor ring and the second sensor ring are matched to one another in such a way that an angle is determinable absolutely.

Abstract translation: 本发明的一些实施例包括绝对电容式旋转编码器，其包括可相对于第二盘旋转的第一盘，以及第一传感器环和第二传感器环。 第一和第二传感器环各自具有多个第一耦合电极和彼此电容耦合的第二耦合电极。 相应传感器环的第一耦合电极具有不同的耦合信号相位。 第一传感器环和第二传感器环彼此匹配，使得可以绝对地确定角度。