incandescent lamps 白熾燈
filament 燈絲
tungsten 鎢
halogen 鹵素
iodine 碘
Xenone lamps 氙燈
fluorescent lamps 熒光燈
argon 氬
Front light: It is oftern refered to as incident light and the light that falls onto the object.
Back light: It is also called transmitted light, especially if images of transparant objects are acquired.
Dark-field illumination: The light is placed in such a way that most of the light is reflected away from the camera,
and only light of certain parts of the object is reflected to the camera.
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