【摘要】：傳統(tǒng)的光學(xué)鏡頭探測主要基于回波強(qiáng)度(貓眼效應(yīng))來實(shí)現(xiàn),但對于微型鏡頭而言,反射回波中存在明顯的衍射現(xiàn)象,因此對微型鏡頭光闌衍射效應(yīng)的研究成為一個(gè)重要的研究方向�；诮亲V衍射理論,研究了微型鏡頭對輻照激光的空間調(diào)制特性,推導(dǎo)了回波光場分布的公式;仿真研究了探測距離、入射角度和光闌直徑對衍射光場分布的影響,以及不同光闌直徑時(shí)的最大可探測入射角,并利用搭建的激光主動(dòng)探測系統(tǒng)對回波衍射現(xiàn)象進(jìn)行了探測。結(jié)果表明,實(shí)際探測的衍射圖樣與仿真圖樣吻合得較好,所提理論能夠準(zhǔn)確地預(yù)測微型鏡頭探測回波的衍射現(xiàn)象。
[Abstract]:The traditional optical lens detection is mainly based on the echo intensity (cat's eye effect), but for the miniature lens, there are obvious diffraction phenomena in the reflected echo. Therefore, the study of the diffraction effect of micro lens aperture has become an important research direction. Based on the theory of angular spectrum diffraction, the spatial modulation characteristics of laser irradiated by microlens are studied, and the distribution formula of echo light field is derived. The effects of detection distance, incident angle and aperture diameter on the diffraction field distribution and the maximum detectable incident angle at different apertured diameters are studied by simulation. The echo diffraction phenomena are detected by using a laser active detection system. The results show that the diffraction pattern is in good agreement with the simulation pattern, and the theory proposed can accurately predict the diffraction phenomenon of the microlens detection echo.
【作者單位】： 北京理工大學(xué)光電學(xué)院;
【分類號】：TB851
，

本文編號：2294597