Search results for "Optical beam"

showing 2 items of 2 documents

Focal shift in optical waves with off-axis focus

2003

We present a formulation for a suitable description of the focal shift in optical waves that have an off-axis focus. This shift that is primarily produced along the chief axis is given in terms of the focal distance and depends only on a parameter that is named as the generalized Fresnel number. Any non-uniform, either truncated and non-apertured optical beam with off-axis focus may be considered.

DiffractionPhysicsWave propagationbusiness.industryOptical beamAstrophysics::Instrumentation and Methods for AstrophysicsPhysics::OpticsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsOpticsBessel beamFocal lengthFresnel numberElectrical and Electronic EngineeringPhysical and Theoretical ChemistryFocus (optics)businessFocal shiftOptics Communications
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A LiDAR Prototype with Silicon Photomultiplier and MEMS Mirrors

2018

In this paper, we present a low cost prototype of a Time-Of-Flight (TOF) LiDAR system, employing a SiPM as photo detector and MEMS mirrors in order to steer the nanosecond pulsed optical beam with a scanning angle of +/-6°. Preliminary TOF measurements have been performed both indoor and outdoor to test the limits of the system.

LiDARMaterials scienceSiPMInstrumentationOptical beamComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONEnergy Engineering and Power TechnologyPhotodetectorSettore ING-INF/01 - ElettronicaIndustrial and Manufacturing EngineeringOpticsSilicon photomultiplierArtificial IntelligenceSilicon PhotomultiplierInstrumentationMicroelectromechanical systemsRenewable Energy Sustainability and the Environmentbusiness.industryTOFComputer Science Applications1707 Computer Vision and Pattern RecognitionNanosecondMEMSComputer Networks and CommunicationLidarbusinessLiDAR TOF SiPM Silicon Photomultiplier MEMS2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI)
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