【摘要】 分析预混气体燃烧气流形成的层状结构,建立其分界面的模拟方程;用矩阵方法计算光透 射率和厚度灵敏因子,得到层状火焰透镜的性能参数;引进光学材料的规化热差系数和色差系数,建立无热差光学系统的方程,并提出了消除温度对其焦距影响的方案。结果表明:精细的火焰多层膜层结构的透镜效应研究对获得极准确的激光全息信息非常有益。更多还原

【Abstract】 A stratified structure formed by premixed gas burning stream is analyzed and a simulation equation for its interface is established. The performance parameters for the stratified flame lens are obtained through calculating light transmittance and thickness sensitivity factor with matrix method. An equation for the optical system without thermal aberration is established and a scheme for eliminating the influence of temperature on its focal length is proposed through introduction of normalized thermal aberration coefficient and color aberration coefficient. The results show that the study on lens effect in fine flame stratified film structure is benefit for obtaining very accurate laser hologram information.更多还原