Optical Pyrometry of Semi-transparent Optical Materials
LIU Jiang-fan,FU Tai-ran,ZHAO Huan
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
Abstract：For the need of temperature measurements of optical materials in applications and the technique limitation of traditional measurement methods, the optical pyrometry of semi-transparent optical materials is investigated. Based on the analysis of the radiative transfer process of one-dimensional semi-transparent media, the effective spectral intensity and effective emissivity models are established for non-scattering media at the mirror reflection boundary condition. The effective emissivity represents the radiation coupling information of the emitting radiation of materials, the reflected radiation and the transmission radiation from background environments. Choosing the CVD-ZnS infrared optical material as the example, the effective spectral emissivity of CVD-ZnS is analyzed at various reflection, transmission sources and material temperatures.
［1］谈和平,夏新林,刘林华,等.红外辐射特性与传输的数值计算［M］. 哈尔滨:哈尔滨工业大学出版社,2006.
［2］戴景民, 金钊. 火焰温度测量技术研究 ［J］. 计量学报, 2003, 24(4): 297～302.
［3］Field R E, Viskanta R. Measurement and Prediction of Dynamic Temperatures in Unsymmetrically Cooled Glass Windows ［J］. Journal of Thermophysics and Heat Transfer, 1993, 7(4): 616-623.
［4］Lim G, Kar A. Radiative properties of thermal barrier coatings at high temperatures ［J］. J. Phys D Appl Phys, 2009, 42: 155412.
［5］Bergmann G, Muller-Simon H. Measurement of the temperature distribution in glass melt gobs after cutting ［J］. Glass Technology-European Journal of Glass Science and Technology Part A, 2010, 51(6): 231-234.
［6］Shepard C L, Cannon B D, Khaleel M A. Determination of temperature in glass with a fluorescence method ［J］. International Journal of Heat and Mass Transfer, 2001, 44: 4027-4034.
［7］Wang Q, Zhao J L, Jiao X Y, et al. Visual and quantitative measurement of the temperature distribution of heat conduction process in glass based on digital holographic interferometry ［J］. Journal of Applied Physics, 2012, 111, 093111.
［8］Hajji N, Spruiell J E. Radiation pyrometry on semitransparent sheets. I: gray media ［J］. Polymer Engineering and Science, 1994, 34(2):116-121.
［9］Linhart J, Linhart S. Temperature measurements in the glass melt ［J］. Glass Technol. 2002, 43(5): 198-202.
［10］Nagtegaal T M, Rindt C C M, Van Steenhoven A A. Numerical analysis of an optical method to determine temperature profiles in hot glass melts ［J］. Measurement Science & Technology, 2004, 15(1): 279-289.
［11］Pfefferkorn F E, Incropera F P, Shin Y C. Surface temperature measurement of semi-transparent ceramics by long-wavelength pyrometry ［J］. Journal of Heat Transfer, 2003, 125(1): 48-56.
［12］Mori M, Novak L, Sekavnik M. Measurements on rotating blades using IR thermography ［J］. Experimental Thermal and Fluid Science, 2007, 32(2): 387-396.
［13］Fu T R, Liu J F, Tang J Q, et al. Temperature measurements of high-temperature semi-transparent infrared material using multi-wavelength pyrometry ［J］. Infrared Physics & Technology, 2014, 66:49-55.
［14］Fu T R, Liu J F, Zong A Z, et al. Radiation temperature measurement method for semitransparent materials using one-channel infrared pyrometer ［J］. Applied Optics, 2014, 53(29): 6830-6839.
［15］Harris D C, Baronowski M, Henneman L, et al. Thermal, structural, and optical properties of Cleartran multispectral zinc sulfide ［J］. Optical Engineering, 2008, 47(11): 114001.
2015, Vol. 36 
