Stripe detection device

The utility model provides a stripe detection device which can clearly observe the stripe image, which comprises a light source, an optical-collecting imaging part, an aperture plate, a collimation imaging part, a sample platform, a projecting screen and a vidicon, which are sequentially arranged along a light path. The stripe detection device is provided with the imaging part, and the stripe is observed in a parallel light path, so the observation of the stripe is clearer compared with the divergence light path; all parts are installed on a base, and the base can slide on an optical guide rail, so the position of each part is adjustable so as to obtain the best imaging effect; the aperture holes with different sizes can be selected to obtain the appropriate light intensity and to eliminate the stray light.