Optical BRDF and BSDF measurements of human incisors from visible to mid-infrared wavelengths

David W. Blodgett; S. C. Webb

doi:10.1117/12.434733

9 July 2001 Optical BRDF and BSDF measurements of human incisors from visible to mid-infrared wavelengths

David W. Blodgett, S. C. Webb

Proceedings Volume 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical; (2001) https://doi.org/10.1117/12.434733
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

The optical bi-directional reflectance distribution functions (BRDR) and bi-directional scattering distribution functions (BSDF) of human incisors were measured form -180° to 180° using a scatterometer at 632.8 nm, 1.064 μm, and 3.39 μm. Results from these measurements show that multiple scattering events dominate the optical characteristics of the tooth at the measurement wavelengths in the visible and near-IR. Results form the 3.39 μm wavelength indicate that very little scatter or absorption occurs. This allowed us to obtain an estimated absorption coefficient of about 0.7 cm^-1, which is much smaller than previously reported for the visible and near-IR wavelengths.

Citation Download Citation

David W. Blodgett and S. C. Webb "Optical BRDF and BSDF measurements of human incisors from visible to mid-infrared wavelengths", Proc. SPIE 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical, (9 July 2001); https://doi.org/10.1117/12.434733

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