| 摘要 |
<p>A readhead for a spectrometer for illuminating a target area and receiving light from said target area is provided with a housing adapted to be incorporated in a spectrometer, a light source mounted in a fixed position relative to the housing, a support mechanism adapted to support a biological sample to be illuminated by the light source, a light-shaping mechanism disposed between the light source and the support for increasing the diameter, intensity, and uniformity of the light beam, and a photodetector mounted in fixed position relative to the housing, the photodetector being adapted to detect light from a biological sample disposed in the target area illuminated light sources. The light sources may be in the form of a light-emitting diodes that emits substantially monochromatic light having a first wavelength, and the readhead may also include a second light-emitting diode that is adapted to emit substantially monochromatic light of a second wavelength towards the target area. <IMAGE></p> |
