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双折射材料的温度修正 Birefringent Material Temperature Modification UE4#j\ >
95Cs`>d 目前,FRED尚不支持“global”温度设置,温度敏感性评估一般用脚本编程来完成,该文档演示双折射材料的折射率随温度变化的问题。附件案例文件包括两个双折射材料模,“KDP”和 “KDP Baseline”, KDP Baseline材料存储在已知温度下的折射率,KDP材料用于储存在“current”温度下的折射率值,定义为与baseline material之间的温度差。一个嵌入的脚本名为“modifyBirefringentMaterialIndex” ,包含在FRED文件中,另外也单独附加。其实现过程如下: p(G? A-io-P7qyj 1.Retrieve the node numbers for the two materials, KDP and KDP Baseline hF~B&^dd. f3>/6C 2.User specifies CTE for the ordinary and extraordinary refractive index values as well as the temperature difference from the baseline _:L*{=N hLvv:C@ 3.Loop over the baseline material samples and determine the number of wavelength entries ~roHnJ> R}>Do=hAO 4.Loop over each sampled wavelength entry in the baseline material `O{Uz?#*x r2th6hl~ a.Modify the ordinary and extraordinary refractive index values using (2) above >DRs(~|V# +7^Ul6BB#K b.Apply the modified values to the non-baseline material ^ztf:'l@C WI6E3,ejB1 5.Set a description on the non-baseline material indicating the temperature change from baseline M\&~ Dmd *eP4dGe& 脚本编程及GUI例程请下载链接: @nP}q!y ]S L&x:/- http://fred-kb.photonengr.com/files/2011/04/modifyBirefringentMaterialIndex.frs yLx.*I^6 deoM~r9s http://fred-kb.photonengr.com/files/2011/04/birefringentMaterialTemperatureModification.frd wM)w[ qt(:bEr^6b \bOjb\ w$ QQ:2987619807 AG7}$O.
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