Analysis on the Scattering Characteristics of Two Stray Light Removing Metal Surfaces

Abstract:

For the purpose of stray light suppression, black anodized and sandblasted aluminum alloy is widespread used in spaceborne cameras. Base on the relative measuring method, in the white light irradiation, measure relative backscatter intensity and BRDF of two black anodized and sandblasted sample surfaces. Contrast these surfaces scattering characteristics. Finally BRDF curves have been drawn with measurement data. In the curves, the BRDF of sandblasted aluminum surface is nearly linear relation. Anodized surface curve, it’s pulse pattern that BRDF sharply increases among the region of critical angles. It is indicate that in critical angle range, anodized aluminum surface specularity is visible and can be treated as specular reflection which harm for stray light suppression. This experiment research can provide objective reference of these two material’s scattering characteristics in specific optical system design.

• Periodical: Advanced Materials Research (Volume 571)
• Pages: 115-119
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.571.115
• Online since: September 2012
• Authors: Jian Jun Chen, Zhen Ma, Xue Ting Duan, Qiong Liu, Juan Han, Xing Fu
• Keywords: Anodized, BRDF, Sandblasted, Scattering, Stray Light

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