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Bright-field microscopy is the simplest of all the optical microscopy illumination techniques. Sample illumination is transmitted (i.e., illuminated from below and observed from above) white light and contrast in the sample is caused by absorbance of some of the transmitted light in dense areas of the sample. Bright-field microscopy is the simplest of a range of techniques used for illumination of samples in light microscopes and its simplicity makes it a popular technique. The typical appearance of a bright-field microscopy image is a dark sample on a bright background, hence the name. ==Light path== (詳細はhalogen lamp in the microscope stand; * a condenser lens which focuses light from the light source onto the sample; and * objective lens which collects light from the sample and magnifies the image. * oculars and/or a camera to view the sample image Bright field microscopy may use critical or Köhler illumination to illuminate the sample. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bright-field microscopy」の詳細全文を読む スポンサード リンク
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