Optical sample detection system and sample analysis device

An optical sample detection system, comprising:

• a light source;
• a convergence projection component configured for converging light rays emitted by the light source;
• a sample accommodation component configured for accommodating a detected sample;
• a light beam collection component configured for receiving light rays carrying sample information and transmitted from the sample accommodation component;
• a light splitting component configured for splitting polychromatic lights collected by the light beam collection component into independent spectrums or spectral bands;
• and
• a photoelectric detection component configured for receiving optical signals of different wavelengths separated through the light splitting component,
• wherein the convergence projection component further comprises an optical stop in an internal surface of the optical stop, wherein included angles between directions of at least a part of normals and a direction of an optical axis of the optical system are larger than 90°, the direction of the normal refers to a direction pointing to an inside of the optical stop from the surface of the optical stop, and the direction of the optical axis refers to a light beam propagation direction.