G01S17/89

Integrated optical system with wavelength tuning and spatial switching
11579356 · 2023-02-14 ·

An integrated optical system includes a wavelength tunable optical source and a photonic integrated circuit (PIC). The PIC includes a set of spatial waveguide switches having an input optically coupled to the wavelength tunable optical source and a plurality of outputs. The PIC also includes an optical emitter having a plurality of inputs, each being coupled to a respective one of the plurality of outputs of the set of spatial waveguide switches, the optical emitter configured to produce at an output an optical beam having a wavelength dependent emission direction that changes as light is switched by the set of spatial waveguide switches such that the optical beam may be steered in two dimensions.

Surveying data processing device, surveying data processing method, and surveying data processing program
11580696 · 2023-02-14 · ·

A surveying data processing device includes a point cloud data acquiring unit, a three-dimensional model acquiring unit, a first correspondence relationship determining unit, an extended three-dimensional data generating unit, and a second correspondence relationship determining unit. The point cloud data acquiring unit acquires first point cloud data obtained by laser scanning, at a first viewpoint, and acquires second point cloud data obtained by laser scanning, at a second viewpoint. The three-dimensional model acquiring unit acquires data of a three-dimensional model. The first correspondence relationship determining unit obtains a correspondence relationship between the first point cloud data and the three-dimensional model. The extended three-dimensional data generating unit generates extended three-dimensional data in which the first point cloud data is extended, on the basis of the correspondence relationship. The second correspondence relationship determining unit determines a correspondence relationship between the extended three-dimensional data and the second point cloud data.

INTERACTION PERIPHERAL, DETECTION METHOD, VIRTUAL REALITY HEADSET, METHOD FOR REPRODUCING A REAL POINT IN VIRTUAL SPACE, DEVICE AND METHOD FOR VIRTUALISING A REAL SPACE
20230042781 · 2023-02-09 ·

An interaction peripheral, a method for detecting a real point, a virtual reality headset, a method for reproducing a real point in virtual space, a device and a method for virtualising a real space, particularly allowing a plane to be obtained in two, three or n dimensions of a real space which may be reproducible in virtual reality. An interaction peripheral which can be connected to a virtual reality headset, includes a range finder which can supply, to the headset, a measurement signal including a relative position measurement of a real point of a real space, the real point being sighted by the range finder. The measurement signal enables reproduction of the real point measured in a virtual space generated by the headset. Thus, the real point can be reproduced in real space while reducing risks of errors because the measurement tools are simple interaction peripherals handled by a user.

INTERACTION PERIPHERAL, DETECTION METHOD, VIRTUAL REALITY HEADSET, METHOD FOR REPRODUCING A REAL POINT IN VIRTUAL SPACE, DEVICE AND METHOD FOR VIRTUALISING A REAL SPACE
20230042781 · 2023-02-09 ·

An interaction peripheral, a method for detecting a real point, a virtual reality headset, a method for reproducing a real point in virtual space, a device and a method for virtualising a real space, particularly allowing a plane to be obtained in two, three or n dimensions of a real space which may be reproducible in virtual reality. An interaction peripheral which can be connected to a virtual reality headset, includes a range finder which can supply, to the headset, a measurement signal including a relative position measurement of a real point of a real space, the real point being sighted by the range finder. The measurement signal enables reproduction of the real point measured in a virtual space generated by the headset. Thus, the real point can be reproduced in real space while reducing risks of errors because the measurement tools are simple interaction peripherals handled by a user.

Calibration of a Solid-State Lidar Device
20230041567 · 2023-02-09 ·

A solid-state lidar device comprises a laser generator, an optical lens arrangement having a focal length and providing a rear focal plane, a solid-state sensing array positioned at the rear focal plane of the optical lens arrangement having a first sensor and a second sensor spaced from each other by a first sensor distance and at least one processor. The processor is configured to obtain a measured distance of the target from a pulsed time-of-flight measurement utilizing the laser generator and at least one of the first sensor and the second sensor of the solid-state sensing array and obtain at least one spatial coordinate for the target from the measured distance using a calibration parameter indicative of the ratio of the first sensor distance and the focal length.

DEVICE, METHOD, AND USE OF THE DEVICE FOR ADJUSTING, ASSEMBLING AND/OR TESTING AN ELECTRO-OPTICAL SYSTEM
20230037764 · 2023-02-09 ·

A device (1) for producing a photoactive system (10), in particular a deactivated photoactive system (10), characterised by: an imaging device (2) having at least one imaging arrangement (20), wherein the at least one imaging arrangement (20) has a beam passage plane (SE) and an optical axis (O), and the at least one imaging arrangement (20) is designed to generate electromagnetic beams which extend along a beam path and pass through the imaging arrangement (20) on the beam passage plane (SE) and to reflect the electromagnetic beams along the beam path at the photoactive arrangement (11) in order to image, on a first focal plane (B1) of the imaging arrangement (20), an evaluation image of a photoactive arrangement (11) of the photoactive system (10) to be produced, and the electromagnetic beams of the beam path are captured on the first focal plane (B1) in order to capture the evaluation image of the photoactive arrangement (11); and a first holding device (3a) having a first holding plane (Ha), on the first holding plane (Ha), an optical arrangement (12) of the photoactive system (10) to be produced; and a second holding device (3b) having a second holding plane (3b) for holding the photoactive arrangement (11) on the second holding plane (Hb); wherein the first holding device (3a) having the first holding plane (Ha) and/or the second holding device (3a) having the second holding plane (Ha) is/are movably positioned relative to the imaging device (2).

DEVICE, METHOD, AND USE OF THE DEVICE FOR ADJUSTING, ASSEMBLING AND/OR TESTING AN ELECTRO-OPTICAL SYSTEM
20230037764 · 2023-02-09 ·

A device (1) for producing a photoactive system (10), in particular a deactivated photoactive system (10), characterised by: an imaging device (2) having at least one imaging arrangement (20), wherein the at least one imaging arrangement (20) has a beam passage plane (SE) and an optical axis (O), and the at least one imaging arrangement (20) is designed to generate electromagnetic beams which extend along a beam path and pass through the imaging arrangement (20) on the beam passage plane (SE) and to reflect the electromagnetic beams along the beam path at the photoactive arrangement (11) in order to image, on a first focal plane (B1) of the imaging arrangement (20), an evaluation image of a photoactive arrangement (11) of the photoactive system (10) to be produced, and the electromagnetic beams of the beam path are captured on the first focal plane (B1) in order to capture the evaluation image of the photoactive arrangement (11); and a first holding device (3a) having a first holding plane (Ha), on the first holding plane (Ha), an optical arrangement (12) of the photoactive system (10) to be produced; and a second holding device (3b) having a second holding plane (3b) for holding the photoactive arrangement (11) on the second holding plane (Hb); wherein the first holding device (3a) having the first holding plane (Ha) and/or the second holding device (3a) having the second holding plane (Ha) is/are movably positioned relative to the imaging device (2).

METHOD FOR PROCESSING DATA PROVIDED BY A LIDAR AND ASSOCIATED COMPUTER
20230041817 · 2023-02-09 ·

A method for processing data provided by a lidar. Obtaining, for measurement points of a lidar, data representative of a diffuse intensity and a distance between the measurement point and the lidar; determining an angle of incidence of the lidar at each measurement point; calculating, for each measurement point, reflectivity from the angle of incidence, the distance and the diffuse intensity; identifying spatially adjacent measurement points having a reflectivity within a given range of values to form common reflectivity zones; defining a cost function for at least one common reflectivity zone, the cost function including a first diffuse intensity and a second diffuse intensity, the angle and the distance of the measurement point in question; minimizing the cost function in order to update at least one of the angle, the distance and the reflectivity at the measurement point, for each of the measurement points belonging to a common reflectivity zone.

A SURVEILLANCE SENSOR SYSTEM
20230045319 · 2023-02-09 ·

A surveillance sensor system for a surveillance network configured to monitor an environment surrounding a device, and including a processing unit, a tridimensional sensor and a camera. The surveillance sensor system is providing to the surveillance network, a global tridimensional map, a plurality of features including associations of the features to the corresponding tridimensional data points in the global tridimensional map, and including properties determined for each feature. The surveillance sensor system is not providing the images from the camera to the surveillance network.

A SURVEILLANCE SENSOR SYSTEM
20230045319 · 2023-02-09 ·

A surveillance sensor system for a surveillance network configured to monitor an environment surrounding a device, and including a processing unit, a tridimensional sensor and a camera. The surveillance sensor system is providing to the surveillance network, a global tridimensional map, a plurality of features including associations of the features to the corresponding tridimensional data points in the global tridimensional map, and including properties determined for each feature. The surveillance sensor system is not providing the images from the camera to the surveillance network.