高效率平面式微光學聚光器

Abstract

在這項研究中我們藉由通過透鏡的f-number、微結構的角度和光線在平面式微光學聚光器的路徑關係，將直接損失最小化，然後透過微結構的尺寸被確定為等於所述透鏡的mini-blur size，來減少非直接損失，最後則是透鏡的f-number和透鏡的光瞳直徑決定，通過透鏡的f-number、透鏡的光瞳直徑、光的利用效率、接收角和平面式微光學聚光器的厚度之間關係由光學模擬的結果來確定。最終結果對於一個300倍優化的平面式微光學聚光器，所述的f-number、透鏡的光瞳直徑、微結構的角度和平面式微光學聚光器的厚度各為2.6 、1.49mm、120度、5.97mm，微結構尺寸個微28.95μm、51.24μm和88.29μm時，平面式微光學聚光器的半接受角各為0.115度、0.275度和0.55度，其光學效率分別為81.23％、71.92％和50.02 ％，在效率上高於傳統設計4.6%，而厚度則比傳統設計少2.93mm。

this study, we from the direct-loss be minimized by the relation between the f-number of lens lets, the angle of micro-structure and the ray paths in the planar micro-optic concentrator. Then, the size of micro-structure could be determined to equal to the mini-blur size of the lens lets in order to reduce the non-direct loss. Final, the f-number of lens lets and the entrance pupil diameter of lens lets could be determined by the relation between the f-number of lens lets, the entrance pupil diameter of lens lets, the optical efficiency, the acceptance angle and the thickness of planar micro-optic concentrator from the results of the optical simulation. For an optimized planar micro-optic concentrator with a 300× concentration, the f-number of the lens-lets, the EPD of the lens-lets, the angle of the micro-structure and the thickness of planar micro-optic concentrator are 2.6, 1.49 mm, 120 degrees and 5.97 mm, respectively. For micro-structurs 28.95 μm, 51.24μm and 88.29 μm in size, the half acceptance angle of the planar micro-optic concentrator is 0.115 degrees, 0.275 degrees and 0.55 degrees, respectively, and the optical efficiency is 81.23% , 71.92% and 50.02%, respectively. The optical efficiency is better than the traditional design Increase 4.6% and the thickness is reduced 2.93mm.