Increased demand for compact devices leads to rapid development of miniaturized digital cameras.However,conventional camera modules contain multiple lenses along the optical axis to compensate for optical aberrations ...Increased demand for compact devices leads to rapid development of miniaturized digital cameras.However,conventional camera modules contain multiple lenses along the optical axis to compensate for optical aberrations that introduce technical challenges in reducing the total thickness of the camera module.Here,we report an ultrathin digital camera inspired by the vision principle of Xenos peckii,an endoparasite of paper wasps.The male Xenos peckii has an unusual visual system that exhibits distinct benefits for high resolution and high sensitivity,unlike the compound eyes found in most insects and some crustaceans.The biologically inspired camera features a sandwiched configuration of concave microprisms,microlenses,and pinhole arrays on a flat image sensor.The camera shows a field-of-view(FOV)of 68 degrees with a diameter of 3.4mm and a total track length of 1.4mm.The biologically inspired camera offers a new opportunity for developing ultrathin cameras in medical,industrial,and military fields.展开更多
Compound eyes found in insects provide intriguing sources of biological inspiration for miniaturised imaging systems.Here,we report an ultrathin arrayed camera inspired by insect eye structures for high-contrast and s...Compound eyes found in insects provide intriguing sources of biological inspiration for miniaturised imaging systems.Here,we report an ultrathin arrayed camera inspired by insect eye structures for high-contrast and super-resolution imaging.The ultrathin camera features micro-optical elements(MOEs),i.e.,inverted microlenses,multilayered pinhole arrays,and gap spacers on an image sensor.The MOE was fabricated by using repeated photolithography and thermal reflow.The fully packaged camera shows a total track length of 740μm and a field-of-view(FOV)of 73°.The experimental results demonstrate that the multilayered pinhole of the MOE allows high-contrast imaging by eliminating the optical crosstalk between microlenses.The integral image reconstructed from array images clearly increases the modulation transfer function(MTF)by~1.57 times compared to that of a single channel image in the ultrathin camera.This ultrathin arrayed camera provides a novel and practical direction for diverse mobile,surveillance or medical applications.展开更多
基金supported by the National Research Foundation of Korea(NRF-2018029899 to KHJ,NRF-2016R1A2B2013031 to MHK)the National Science Foundation(NSF-IOS1456757,to EKB)in the United States.
文摘Increased demand for compact devices leads to rapid development of miniaturized digital cameras.However,conventional camera modules contain multiple lenses along the optical axis to compensate for optical aberrations that introduce technical challenges in reducing the total thickness of the camera module.Here,we report an ultrathin digital camera inspired by the vision principle of Xenos peckii,an endoparasite of paper wasps.The male Xenos peckii has an unusual visual system that exhibits distinct benefits for high resolution and high sensitivity,unlike the compound eyes found in most insects and some crustaceans.The biologically inspired camera features a sandwiched configuration of concave microprisms,microlenses,and pinhole arrays on a flat image sensor.The camera shows a field-of-view(FOV)of 68 degrees with a diameter of 3.4mm and a total track length of 1.4mm.The biologically inspired camera offers a new opportunity for developing ultrathin cameras in medical,industrial,and military fields.
基金financially supported by a grant from the National Research Foundation of Korea(NRF)(No.2019023700)Ministry of Health&Welfare,Republic of Korea(No.HI16C1111).
文摘Compound eyes found in insects provide intriguing sources of biological inspiration for miniaturised imaging systems.Here,we report an ultrathin arrayed camera inspired by insect eye structures for high-contrast and super-resolution imaging.The ultrathin camera features micro-optical elements(MOEs),i.e.,inverted microlenses,multilayered pinhole arrays,and gap spacers on an image sensor.The MOE was fabricated by using repeated photolithography and thermal reflow.The fully packaged camera shows a total track length of 740μm and a field-of-view(FOV)of 73°.The experimental results demonstrate that the multilayered pinhole of the MOE allows high-contrast imaging by eliminating the optical crosstalk between microlenses.The integral image reconstructed from array images clearly increases the modulation transfer function(MTF)by~1.57 times compared to that of a single channel image in the ultrathin camera.This ultrathin arrayed camera provides a novel and practical direction for diverse mobile,surveillance or medical applications.
