Detection of micro-sized air bubble defects in optical glass based on Mie theory

Sai Zhang; Jian Bai; Kaiwei Wang; Fan He; Bin Zhou

doi:10.1117/12.2199047

8 October 2015 Detection of micro-sized air bubble defects in optical glass based on Mie theory

Sai Zhang, Jian Bai, Kaiwei Wang, Fan He, Bin Zhou

Proceedings Volume 9677, AOPC 2015: Optical Test, Measurement, and Equipment; 96770R (2015) https://doi.org/10.1117/12.2199047
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

Mie scattering theory was shown in this paper to be suitable for analyzing the forward scattered light intensity distribution of micro-sized air bubble defects in glass, shining by a monochrome laser with a wavelength of 532um. The scattered light was measured by a high definition CCD camera. The scattering process can be classified as uncorrelated single scattering according to the properties of optical media. After calculating and smoothing the gray value of split rings of picture, Chahine algorithm was applied to reverse the size of defects. This technique was accurate to within 5% for defects with radii of <50um.

Citation Download Citation

Sai Zhang, Jian Bai, Kaiwei Wang, Fan He, and Bin Zhou "Detection of micro-sized air bubble defects in optical glass based on Mie theory", Proc. SPIE 9677, AOPC 2015: Optical Test, Measurement, and Equipment, 96770R (8 October 2015); https://doi.org/10.1117/12.2199047

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