Implementations described herein generally relate to scanning beam display systems and more specifically, to systems and methods for improved image alignment of such scanning beam display systems. The method comprises providing a display system comprising a display screen having a plurality of display screen region each with a corresponding light engine module having a servo laser beam and an excitation laser beam, scanning the servo laser beam of a light engine module in an outer scanning region outside of the light engine module's corresponding display screen region, detecting servo laser beam feedback light to measure an alignment error of the light engine module relative to the light engine module's corresponding display screen region, and adjusting alignment of the excitation laser beam based on the measured alignment error.

The present invention relates to a head device of a three-dimensional modelling equipment, and a modelling plane scanning method using the same, the head device of a three-dimensional modelling equipment comprising: a modelling light source array having a plurality of modelling light sources; a light guide part, installed at a given position above a modelling plane, having a function of reflecting modelling rays from the modelling light source array so as to be incident on the modelling plane; and a controller for controlling the operations of the modelling light source array and the light guide part in a conjoined manner, wherein a plurality of modelling rays generated from the plurality of modelling light sources are irradiated while forming one line scan having a first axial direction on the modelling plane, and the light guide part continuously or intermittently moves the one line scan on the modelling plane to irradiate the modelling light rays across the modelling plane. The present invention has the effects of enabling high-speed scanning to be performed, and modelling precision to be enhanced through precise scanning control.

A laser scanning sensor includes a laser light-emitting element to emit a pulse laser beam, a light-receiving element to receive a returned reflected beam, a rotary polygon mirror having a plurality of reflecting surfaces to change the travelling direction of the pulse laser beam, and a drive motor to rotate the rotary polygon mirror in a predetermined direction. The sensor also includes an encoder to detect the rotation status of the rotary polygon mirror and to generate a reference signal and trigger signals for the respective reflecting surfaces, and a control/calculation unit to produce a projection pulse train in a specific pulse cycle after a delay time from the generation of a trigger signal for each of the reflecting surfaces, and to acquire distance information per pulse, based on the time after the start of emission of the pulse laser beam before the return of the reflected beam.

A display system includes a display screen, a light source to generate a light beam to be modulated in accordance with image data, and a beam scanning module to receive the light beams and to direct the light beam onto an associated display region of the display screen. The beam scanning module includes a resonant scanning mirror configured to scan the light beam along a first scanning direction across the associated display region, and a polygon scanning mirror to scan the light beam along a second scanning direction across the associated display region.

A method of imaging a sample providing light from a light source, directing the provided light into an extended focus, scanning the extended focus across a wavefront modulating element that modulates amplitudes of the light along the extended focus, providing the modulated light to the sample, detecting light emitted from the sample in response to excitation by the modulated light, and generating an image of the sample based on the detected fluorescence emission light.

A light deflector 2 includes: a mirror section 9 that reflects light; a movable frame 8 provided in such a manner as to surround the mirror section 9; a pair of torsion bars 13a and 13b having one end of each torsion bar connected to the mirror section 9 and the other end thereof connected to the movable frame 8 on a Y-axis; and semi-annular piezoelectric actuators 10a and 10b that are provided on the movable frame 8 and rotate the torsion bars 13a and 13b around the Y-axis in a reciprocating manner. The torsion bars 13a and 13b each have a constricted shape in which the transverse width at both end parts is the largest and the transverse width gradually decreases toward the central part thereof in a length direction.

An optical scanning device includes a light source, a beam detector that takes a main scanning start time of a light beam emitted from the light source and deflection-scanned in a predetermined main scanning direction by a deflection-scanning component, and a housing with a support portion that supports reflecting mirrors in different arrangement positions so arrangement angles are different from each other. The support portion includes a first support portion that supports a first side surface of the reflecting mirror in a plurality of arrangement positions. A second support portion supports the first side surface of the mirror with the first support portion, causing a first arrangement angle in the first arrangement position of the reflecting mirror. A third support portion supports the first side surface of the reflecting mirror with the first support portion, causing a second arrangement angle in a second arrangement position of the reflecting mirror.

A light detection and ranging system is provided. The system includes a Galvanometer mirror; a multiple-facet light steering device; and a controller device comprising one or more processors, memory, and processor-executable instructions stored in memory. The processor-executable instructions comprise instructions for receiving a first movement profile of the Galvanometer mirror of the LiDAR scanning system; receiving calibration data of the multiple-facet light steering device of the LiDAR scanning system; generating a second movement profile of the Galvanometer mirror based on the calibration data and the first movement profile; and providing one or more control signals to adjust movement of the Galvanometer mirror based on the second movement profile.

An optical scanning device includes a light source, a photodetector, an optical element group, and a polygon mirror. The light source is configured to emit laser light. The photodetector is configured to detect a beam formed with the laser light. The optical element group is configured to guide the beam to the photodetector. The polygon mirror is configured to perform deflection scanning on the beam, which deflects the beam from a first end in one direction of a main scanning direction to a second end on a side opposite to the first end of the main scanning direction. The beam is incident on the same side of the photodetector when the beam is deflected toward the first end and the second end by the polygon mirror.

A light detection and ranging system is provided. The system includes a Galvanometer mirror; a multiple-facet light steering device; and a controller device comprising one or more processors, memory, and processor-executable instructions stored in memory. The processor-executable instructions comprise instructions for receiving a first movement profile of the Galvanometer mirror of the LiDAR scanning system; receiving calibration data of the multiple-facet light steering device of the LiDAR scanning system; generating a second movement profile of the Galvanometer mirror based on the calibration data and the first movement profile; and providing one or more control signals to adjust movement of the Galvanometer mirror based on the second movement profile.