Acta Optica Sinica, Volume. 32, Issue 3, 312006(2012)
Dichromatic Interferogram of Lubricant Film Measurement
The multi-beam interference and the CCD camera spectral response, a colorimetric model is established for the interference measurement of lubricating-film thickness. A computation program is built for rendering the interferograms generated by a dichromatic light source in the lubricating-film measurement. For a static ball-glass disc contact, the results of theoretical simulation and experiment of the red-green dichromatic interferograms are agreed. Analyses show that the dichromatic interferogram is mainly influenced by the full width of half maximum (FWHM) of the green-red filter, the thickness of the beam splitter, the spacer thickness and the lubricants. A small FWHM, 4~10 nm of the beam splitter thickness and low spacer thuickness can lead to high contrast of interference fringes.
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Zhou Guangmei, Guo Feng, Li Hongsheng. Dichromatic Interferogram of Lubricant Film Measurement[J]. Acta Optica Sinica, 2012, 32(3): 312006
Category: Instrumentation, Measurement and Metrology
Received: Aug. 3, 2011
Accepted: --
Published Online: Feb. 20, 2012
The Author Email: Guangmei Zhou (zgmno.1@163.com)