Circular Disc Linear Refractometer for Liquids

[in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]

Acta Optica Sinica, Volume. 16, Issue 5, 623(1996)

[in Chinese]¹, [in Chinese]², [in Chinese]², and [in Chinese]²

¹Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068

²Brunel Centre for Manufacture Metrology, Department of Maufacture and Engineering Systems, Brunel University, West London, Uxbridge, Middlesex UB8 3PH, United Kingdom

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A Circular disc refractometer with linear output response of photo-electrical signal to liquid refractive index has been developed. The multiple reflection within the circular disc provides a design feature to reduce the influence of non-total internal reflection and significantly improves the measurement linearity. In addition, the circular disc refractometer can achieve quite good linearity even for non-parallel light beams.

Keywords

refractometer circular disc

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[in Chinese], [in Chinese], [in Chinese], [in Chinese]. Circular Disc Linear Refractometer for Liquids[J]. Acta Optica Sinica, 1996, 16(5): 623

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