Gloss (optics)
（重定向自Gloss measurement）
![Gloss reflection](/Images/godic/202501/15/Gloss_light_Illuminates3843.jpg")
![Specular and diffuse reflection](/Images/godic/202501/15/Lambert23843.gif")
![Figure1:Specular reflection of light from a rough surface](/Images/godic/202501/15/Nanorough3844.gif")
![](/Images/godic/202501/15/Specular_gloss3844.jpg")
Gloss is an optical property which indicates how well a surface reflects light in a specular (mirror-like) direction. It is one of important parameters that are used to describe the visual appearance of an object. The factors that affect gloss are the refractive index of the material, the angle of incident light and the surface topography.