【摘要】：為了研究全光相機對火焰等半透明介質(zhì)的光場采樣并優(yōu)化全光相機的參數(shù),基于近軸光學(xué),建立了全光相機的逆向光線追跡模型。在此基礎(chǔ)上,針對彌散介質(zhì)沿采集方向的半透明特性,提出了像素采樣錐形角以及物方采樣角度等評價光線角度采樣的性能指標(biāo),據(jù)此分析了全光相機像素和微透鏡的位置對光場采樣特性的影響,以及全光相機光學(xué)參數(shù)變化對光線方向采樣性能的影響。結(jié)果表明:采集火焰輻射光場時,較小的微透鏡直徑有利于提高光場采樣的單方向性,并減小主鏡頭入瞳直徑,而較小的主鏡頭焦距有利于增大物方采樣角度。
[Abstract]:In order to study the light field sampling of all-optical camera in translucent medium such as flame and optimize the parameters of all-optical camera, the reverse ray tracing model of all-optical camera is established based on paraxial optics. On this basis, according to the translucency characteristics of dispersion medium along the acquisition direction, the performance indexes of pixel sampling cone angle and object sampling angle are proposed to evaluate the light angle sampling. Based on this, the influence of the position of pixels and microlenses of all-optical camera on the sampling characteristics of light field, and the influence of the change of optical parameters of all-optical camera on the sampling performance of light direction are analyzed. The results show that when the flame radiation light field is collected, the smaller microlens diameter is beneficial to improve the unidirectivity of light field sampling and reduce the pupil diameter of the main lens, while the smaller main lens focal length is beneficial to increase the sampling angle of the object side.
【作者單位】： 東南大學(xué)能源與環(huán)境學(xué)院能源熱轉(zhuǎn)換及其過程測控教育部重點實驗室;
【基金】：國家自然科學(xué)基金(51676044,51506030,51327803) 江蘇省自然科學(xué)基金杰出青年基金(BK20150023)~~
【分類號】：TP391.41

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1 邱坤贊,衛(wèi)成業(yè),岑可法;基于火焰輻射圖像的溫度分布與濃度分布聯(lián)合重建[J];燃燒科學(xué)與技術(shù);2002年04期

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