Optimizing depth of field in 3D light-field display by analyzing and controlling light-beam divergence angle
Xunbo Yu, Yiping Wang, Xin Gao, Hanyu Li, Kexin Liu, Binbin Yan, Xinzhu Sang
Abstract
A concept of divergence angle of light beams (DALB) is proposed to analyze the depth of field (DOF) of a 3D light-field display system. The mathematical model between DOF and DALB is established, and the conclusion that DOF and DALB are inversely proportional is drawn. To reduce DALB and generate clear depth perception, a triple composite aspheric lens structure with a viewing angle of 100° is designed and experimentally demonstrated. The DALB-constrained 3D light-field display system significantly improves the clarity of 3D images and also performs well in imaging at a 3D scene with a DOF over 30 cm.
Topics & Concepts
OpticsLight fieldDivergence (linguistics)Lens (geology)Depth of fieldViewing angleField (mathematics)Stereo displayIntegral imagingComputer scienceLight beamDepth perceptionBeam divergencePhysicsComputer visionLaser beamsPerceptionBeam diameterLiquid-crystal displayMathematicsLaserNeuroscienceBiologyPure mathematicsLinguisticsPhilosophyImage (mathematics)Advanced Optical Imaging TechnologiesAdvanced Vision and ImagingImage and Video Stabilization