Browsing by Author "Wu Jeng-Fu"

Now showing 1 - 1 of 1

Design of light guide sleeve on hyperspectral imaging system for skin diagnosis
(2017-01-01)
Yan, Yung-Jhe
;
Chang, Chao-Hsin
;
Huang, Ting-Wei
;
Chiang, Hou-Chi
;
Wu Jeng-Fu
A hyperspectral imaging system is proposed for early study of skin diagnosis. A stable and high hyperspectral image quality is important for analysis. Therefore, a light guide sleeve (LGS) was designed for the embedded on a hyperspectral imaging system. It provides a uniform light source on the object plane with the determined distance. Furthermore, it can shield the ambient light from entering the system and increasing noise. For the purpose of producing a uniform light source, the LGS device was designed in the symmetrical double-layered structure. It has light cut structures to adjust distribution of rays between two layers and has the Lambertian surface in the front-end to promote output uniformity. In the simulation of the design, the uniformity of illuminance was about 91.7%. In the measurement of the actual light guide sleeve, the uniformity of illuminance was about 92.5%.