Abstract
Microlens arrays have been widely used in the fields of micro-optics because of the advantages of their high diffraction efficiency, high fill factor, and wide operating band. However, the microlens array still has problems with its smaller field of view (FOV) and lower utilization of light energy. In this paper, a 3D compound eye system consisting of a microlens array and a pinhole array was designed according to the optical principle of insect compound eye. The artificial compound eye structure was processed in two-photon polymerization processing technology. Ray tracing and optical system simulation of the designed artificial compound eye structure were performed. The results showed that the artificial compound eye structure had a wider FOV and higher light energy utilization than a conventional 2D microlens array. This thesis may lay a theoretical foundation for the structural optimization design of microlens arrays.
Highlights
Micromachines can provide interfaces in the fields of biology and optics, medicine, fluidics, etc. [1,2,3]
A 3D curved compound eye structure composed of a micro-lens array and pinhole array was designed according to the optical principle of a bionic compound eye [16,17,18]
The structure of an ordinary microlens array was optimized according to the principle of insect compound eye imaging
Summary
Micromachines can provide interfaces in the fields of biology and optics, medicine, fluidics, etc. [1,2,3]. The entire array structure has a smaller FOV and lower utilization of light energy due to a lack of three-dimensional micro-optical surfaces and sensitometric beams in the structure compared with compound eyes in nature. The compound eye in nature has many advantages, such as a wide FOV [15], high sensitivity characteristics, and a highly efficient utilization of light energy. A microlens array on a curved surface was designed to improve the utilization of light energy and enhance the convergence of light at the edges of the compound eye. The pinholes were designed to play a role as a sensitometric beam to get rid of the cross-talk of optical information during imaging process and expand the FOV. Mplicaryomaacrhoinlees a20s1a8,s9e, n33s6itometric beam to get rid of the cross-talk of optical information during ima2gionf g8 process and expand the FOV. Tsthreucmtuicrreos.strTuhcetumreicorfotshtreubcitounreic coof mthpeoubniodneiycecionmthpiosudnedsigenyewains ftahbirsicdaetesdiginn fwemastofsaebcroicnadteldaseinr tfwemo-tpohseoctoonndpolalysemretrwizoa-tpiohnotteocnhnpoolloygmye. rCizoamtipoanretdecwhnitohloogthye. rCtoecmhpnaorleodgiewsiftohroptrhoecrestseicnhgncoolomgpieosufnodr epyreocsetrsusicntugrecso,mthpeoaudnvdanetyaegesstroufcttwuroe-sp,htohteonapdovlaynmtaegreizsatoifontwaroe-pthhaottoitns pproolcyemsseinrigzaetniovniroanrme etnhtatanitds pparroacmesestinergseanrveieroansymteonctoanntdropla; ritamadeoteprtss alareyeeraesdy taodcdointitvreolm; iat naduofapcttsulraiynegre(Ad Mad)dmitievtehomdasniunfaocrtduerrintog a(AvoMid) masesethmobdlsyienrororrdse;ratnodaivtociadnarsesaelmizeblmy iecrrroonrss;aamnpdliet pcaroncreesasliinzge. micron sample processing
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