Wide angle mini-LEDs combined with multifocal micro reflector cavity for thin portable device flashlight

References

• Nie, J.; Wang, P.; Lei, L. Why can’t we be separated from our smartphones? The vital roles of smartphone activity in smartphone separation anxiety. Computers in Human Behavior 2020, 109, 106351. DOI: 10.1016/j.chb.2020.106351.
   Web of Science ®Google Scholar
• Tian, H.; Jiao, L.; Wang, K.; Zhao, X.; Cao, F.; Dong, D. Exploring smartphone-based environmental sensors through applying perovskite quantum dots. Chemical Engineering Journal 2022, 448, 137583. DOI: 10.1016/j.cej.2022.137583.
   Web of Science ®Google Scholar
• Pituła, E.; Koba, M.; Śmietana, M. Which smartphone for a smartphone-based spectrometer. Optics & Laser Technology 2021, 140, 107067. DOI: 10.1016/j.optlastec.2021.107067.
   Web of Science ®Google Scholar
• Park, C. S. Examination of smartphone dependence: Functionally and existentially dependent behavior on the smartphone. Computers in Human Behavior 2019, 93, 123–128. DOI: 10.1016/j.chb.2018.12.022.
   Web of Science ®Google Scholar
• Busch, P. A.; Hausvik, G. I.; Ropstad, O. K.; Pettersen, D. Smartphone usage among older adults. Computers in Human Behavior 2021, 121, 106783. DOI: 10.1016/j.chb.2021.106783.
   Web of Science ®Google Scholar
• Olson, J. A.; Sandra, D. A.; Colucci, É. S.; Al Bikaii, A.; Chmoulevitch, D.; Nahas, J.; Raz, A.; Veissière, S. P. L. Smartphone addiction is increasing across the world: A meta- analysis of 24 countries. Computers in Human Behavior 2022, 129, 107138. DOI: 10.1016/j.chb.2021.107138.
   Web of Science ®Google Scholar
• Obaidat, M. T. Cellular-phone-based system for transportation engineering applications. Alexandria Engineering Journal 2020, 59, 1197–1204. DOI: 10.1016/j.aej.2020.01.040.
   Web of Science ®Google Scholar
• Dunaway, J.; Soroka, S. Smartphone-size screens constrain cognitive access to video news stories. Information, Communication & Society 2021, 24, 69–84. DOI: 10.1080/1369118X.2019.1631367.
   Web of Science ®Google Scholar
• Park, J.; Jeong, J.-E.; Park, S. Y.; Rho, M. J. Development of the smartphone addiction risk rating score for a smartphone addiction management application. Front. Public Health. 2020, 8, 485. DOI: 10.3389/fpubh.2020.00485.
   PubMed Web of Science ®Google Scholar
• Loid, K.; Täht, K.; Rozgonjuk, D. Do pop-up notifications regarding use decrease screen time, phone checking behavior, and self-reported problematic smartphone use? Evidence from a two-month experimental study. Computers in Human Behavior 2020, 102, 22–30. DOI: 10.1016/j.chb.2019.08.007.
   Web of Science ®Google Scholar
• Rozgonjuk, D.; Elhai, J. D.; Täht, K.; Vassil, K.; Levine, J. C.; Asmundson, G. J. Non-social smartphone use mediates the relationship between intolerance of uncertainty and problematic smartphone use: Evidence from a repeated-measures study. Computers in Human Behavior 2019, 96, 56–62. DOI: 10.1016/j.chb.2019.02.013.
   Web of Science ®Google Scholar
• Jeong, K.-H.; Kim, S.; Ryu, J. H.; Lee, S. A longitudinal relationship between mother’s smartphone addiction to child’s smartphone addiction. Int. J. Ment. Health Addict. 2022, 1–12. DOI: 10.1007/s11469-022-00957-0.
   PubMed Web of Science ®Google Scholar
• Doo, E.-Y.; Kim, J.-H. Parental smartphone addiction and adolescent smartphone addiction by negative parenting attitude and adolescent aggression: A cross-sectional study. Front. Public Health. 2022, 10, 981245. DOI: 10.3389/fpubh.2022.981245.
   PubMed Web of Science ®Google Scholar
• Lee, S. J.; Choi, M. J.; Yu, S. H.; Kim, H.; Park, S. J.; Choi, I. Y. Development and evaluation of smartphone usage management system for preventing problematic smartphone use. Digit. Health. 2022, 8, 20552076221089095. DOI: 10.1177/20552076221089095.
   Web of Science ®Google Scholar
• Galal, M. M.; Abd El Aziz, A. A.; Fayed, H. A.; Aly, M. H. Smartphone payment via flashlight: Utilizing the built-in flashlight of smartphones as replacement for magnetic cards. Optik 2016, 127, 2453–2460. DOI: 10.1016/j.ijleo.2015.11.108.
   Web of Science ®Google Scholar
• Capece, N.; Banterle, F.; Cignoni, P.; Ganovelli, F.; Erra, U.; Potel, M. Turning a smartphone selfie into a studio portrait. IEEE Comput. Graph. Appl. 2020, 40, 140–147. DOI: 10.1109/MCG.2019.2958274.
   PubMed Web of Science ®Google Scholar
• Abdelmlek, K. B.; Araoud, Z.; Canale, L.; Nejma, F. B.; Charrada, K.; Zissis, G. Thermal management of LEDs packages within inclined enclosures for lighting applications. IEEE Trans. Ind. Applicat. 2022, 58, 7998–8007. DOI: 10.1109/TIA.2022.3195865.
   Web of Science ®Google Scholar
• Shi, Q.; Yang, Y.; Sun, Z.; Lee, C. K. Progress of advanced devices and IoT systems as enabling technologies for smart homes and health care. ACS Mater. Au 2022, 2, 394–435. DOI: 10.1021/acsmaterialsau.2c00001.
   PubMedGoogle Scholar
• Dong, B.; Shi, Q. F.; Yang, Y.; Wen, F.; Zhang, Z.; Lee, C. K. Technology evolution from self-powered sensors to AIoT enabled smart homes. Nano Energy 2021, 79, 105414. DOI: 10.1016/j.nanoen.2020.105414.
   Web of Science ®Google Scholar
• Ye, Z. T.; Kuo, H.-C.; Chen, C.-H. Thin hollow light guide for high efficiency planar illuminator. Appl. Opt. 2015, 54, E23–E29. DOI: 10.1364/AO.54.000E23.
   PubMed Web of Science ®Google Scholar
• Abdelmlek, K. B.; Araoud, Z.; Charrada, K.; Zissis, G.; Canale, L. Improvement of thermal and optical behavior of multi-chip LEDs package. Case Stud. Therm. Eng. 2022, 39, 102395. DOI: 10.1016/j.csite.2022.102395.
   Web of Science ®Google Scholar
• Wang, H.-C.; Chiang, Y.-T.; Lin, C.-Y.; Lu, M.-Y.; Lee, M. K.; Feng, S.-W.; Kuo, C.-T. All-reflective RGB LED flashlight design for effective color mixing. Opt. Express. 2016, 24, 4411–4420. DOI: 10.1364/OE.24.004411.
   PubMed Web of Science ®Google Scholar
• An, H. J.; Kim, M. S.; Myoung, J.-M. Strategy for the fabrication of perovskite-based green micro LED for ultra high-resolution displays by micro molding process and surface passivation. Chem. Eng. J. 2023, 453, 139927. DOI: 10.1016/j.cej.2022.139927.
   Web of Science ®Google Scholar
• Huang, C.-H.; Chang, S. H.; Liaw, B.-Y.; Liu, C.-Y.; Chou, C.-Y.; Zhou, J.-R.; Lin, C.-C.; Kuo, H.-C.; Song, L.-J.; Li, F.; Liu, X. Research on a novel GaN-based converted mini-LED backlight module via a spectrum-decouple system. IEEE Access 2020, 8, 138823–138833. DOI: 10.1109/ACCESS.2020.3010026.
   Web of Science ®Google Scholar
• Zhang, Z.; Liu, X.; Zhou, H.; Xu, S.; Lee, C. K. Advances in machine‐learning enhanced nanosensors: From cloud artificial intelligence toward future edge computing at chip level. Small Struct. 2023, 2300325. https://onlinelibrary.wiley.com/doi/full/10.1002/sstr.202300325
   Google Scholar
• Ma, Y.; Dong, B.; Lee, C. K. Progress of infrared guided-wave nanophotonic sensors and devices. Nano Converg. 2020, 7, 12. DOI: 10.1186/s40580-020-00222-x.
   PubMed Web of Science ®Google Scholar
• Zheng, L.; Guo, Z.; Yan, W.; Lin, Y.; Lu, Y.; Kuo, H.-C.; Chen, Z.; Zhu, L.; Wu, T.; Gao, Y. Research on a camera-based microscopic imaging system to inspect the surface luminance of the micro-LED array. IEEE Access 2018, 6, 51329–51336. DOI: 10.1109/ACCESS.2018.2869778.
   Web of Science ®Google Scholar
• Huang Chen, S.-W.; Shen, C.-C.; Wu, T.; Liao, Z.-Y.; Chen, L.-F.; Zhou, J.-R.; Lee, C.-F.; Lin, C.-H.; Lin, C.-C.; Sher, C.-W.; et al. Full-color monolithic hybrid quantum dot nanoring micro light-emitting diodes with improved efficiency using atomic layer deposition and nonradiative resonant energy transfer. Photon. Res. 2019, 7, 416–422. DOI: 10.1364/PRJ.7.000416.
   Google Scholar
• Zhu, L.; Ge, A.; Ge, Z.; Hao, R.; Chen, J.; Tao, X. A fresnel freeform surface collimating lens for LEDs. Lighting Research & Technology 2018, 50, 952–960. DOI: 10.1177/1477153517712780.
   Web of Science ®Google Scholar
• Liang, W.-L.; Su, G.-D. J. Design of a high-efficiency train headlamp with low power consumption using dual half-parabolic aluminized reflectors. Appl. Opt. 2018, 57, 1305–1314. DOI: 10.1364/AO.57.001305.
   PubMed Web of Science ®Google Scholar
• Syu, Y.-S.; Wu, C.-Y.; Lee, Y.-C. Double-sided freeform lens for light collimation of light emitting diodes. Appl. Sci. 2019, 9, 5452. DOI: 10.3390/app9245452.
   Google Scholar
• Liu, Q.; Wang, Z.; Zhu, L.; Cheng, X.; Wang, J. Nano-grooves etching on Top of GaN-LED for light extraction enhancement. Optics Laser Technol. 2021, 138, 106842. DOI: 10.1016/j.optlastec.2020.106842.
   Web of Science ®Google Scholar
• Tan, L.; Yao, R.; Wang, K.; Xie, Z.; Wang, H. Characteristics of micro-size light-emitting diode with pentagon-type structure. IEEE Photon. Technol. Lett. 2021, 33, 1077–1080. DOI: 10.1109/LPT.2021.3104645.
   Web of Science ®Google Scholar
• Zhang, X.; Yu, Z.; Li, J.; Peng, Y.; Guo, X.; Shi, T. Enhancing optical performance of chip-scale packaged white LEDs by phosphor-in-glass with high-reflective dam. IEEE Trans. Electron Devices 2022, 69, 6799–6803. DOI: 10.1109/TED.2022.3211160.
   Web of Science ®Google Scholar
• Gong, C.; Xu, H.; Xu, C.; Liang, J.; Mu, Y. Design and prototyping of highly-collimated long-distance optical systems with an LED light source. Appl. Opt. 2020, 59, 8724–8732. DOI: 10.1364/AO.401846.
   PubMed Web of Science ®Google Scholar
• Guo, W.; Zhang, J.; Xia, M.; Yang, K. Visual navigation method for sailing by collimating color lighting-emitting diodes. Optics Laser Technol. 2019, 111, 489–496. DOI: 10.1016/j.optlastec.2018.10.039.
   Web of Science ®Google Scholar
• Vu, H.; Kieu, N. M.; Gam, D. T.; Shin, S.; Tien, T. Q.; Vu, N. H. Design and evaluation of uniform LED illumination based on double linear Fresnel lenses. Appl. Sci. 2020, 10, 3257. DOI: 10.3390/app10093257.
   Google Scholar
• McCarthy, A.; Romero-Vivas, J.; O'Hara, C.; Rebrova, N.; Lewis, L.; Hegarty, S. P. LED-based collimating line-light combining freeform and fresnel optics. IEEE Photonics J. 2018, 10, 1–13. DOI: 10.1109/JPHOT.2018.2876381.
   Web of Science ®Google Scholar
• Sun, X.; Kong, L.; Zhou, P.; Xu, M. A design of compound tailored illumination by a total-internal-reflection lens for machine vision. Lighting Research & Technology 2021, 53, 777–793. DOI: 10.1177/1477153521991590.
   Web of Science ®Google Scholar
• Andreeva, K. V.; Kravchenko, S. V.; Moiseev, M. A.; Doskolovich, L. L. Designing freeform TIR optical elements using supporting quadric method. Opt. Express. 2017, 25, 23465–23476. DOI: 10.1364/OE.25.023465.
   PubMed Web of Science ®Google Scholar
• Xing, J.; Li, H.; Zhang, Z.; Chen, Z. Design and optical performance research of a fully customizable collimating lens based on total internal reflection. Appl. Opt. 2022, 61, 3679–3686. DOI: 10.1364/AO.447347.
   PubMed Web of Science ®Google Scholar
• Ohno, H. Multi-parabolic illuminator to combine perpendicular collimated illuminations with an LED source. OSA Continuum. 2021, 4, 2154–2163. DOI: 10.1364/OSAC.431291.
   Web of Science ®Google Scholar
• Wu, C.-S.; Chen, K.-Y.; Lee, X.-H.; Lin, S.-K.; Sun, C.-C.; Cai, J.-Y.; Yang, T.-H.; Yu, Y.-W. Design of an LED spot light system with a projection distance of 10 km. Crystals 2019, 9, 524. DOI: 10.3390/cryst9100524.
   Web of Science ®Google Scholar
• Hsin, S.-Y.; Hsu, C.-C.; Chen, N.-P.; Ye, C.-Y.; Ji, G.-Y.; Huang, K.-C.; Hsieh, H.-C.; Wu, C.-C.; Dai, C.-L. Design and fabrication of a downlight luminaire with a dual frusto-conical reflector. Appl. Opt. 2021, 60, 7775–7783. DOI: 10.1364/AO.431327.
   PubMed Web of Science ®Google Scholar
• Ohno, H.; Nakagawa, K.; Kamikawa, T. Design of secondary light source for reflectors with axisymmetric light guide. Appl. Opt. 2019, 58, 3848–3855. DOI: 10.1364/AO.58.003848.
   PubMed Web of Science ®Google Scholar
• Ohno, H. Ghost secondary light source for LED collimated illumination. Appl. Opt. 2020, 59, 10339–10344. DOI: 10.1364/AO.411440.
   PubMed Web of Science ®Google Scholar