Multi-wave band light source: in nature, various substances of light absorption and emission properties are different, especially some fluorescent substances, they only produced in certain specific wavelengths of fluorescence excitation of certain wavelengths of light. If according to the absorption and emission spectra of different substances to choose the appropriate wavelength of the excitation light, which can effectively stimulate the substance that itself has the fluorescent substance or drug show fluorescence, so as to form a strong contrast with the background, highlighting the apparent effect. Multi wavelength light source that according to this principle to design and develop, it will be the source of high intensity light a full spectrum line light, through the special interference filter, the output monochromatic light with different wavelengths, effectively stimulate fluorescent substances, as far as possible to reduce the influence of the background object materials of traces, in order to achieve the purpose of evidence search and detection.
没有评论:
发表评论