Low-light collection method, low-light collection device and luminous bacterium low-light detection module

The invention discloses a low-light collection method, a low-light collection device and a luminous bacterium low-light detection module, relates to the technical field of luminous bacterium low-light detection, and solves the problem of less light collection of a traditional luminous bacterium detection method.The low-light collection method is characterized by comprising the steps that divergent light is received; performing first reflection on the divergent light to obtain collimated light; the collimated light is reflected for the second time, and light converged at one point is obtained; by the adoption of the technical scheme, divergent light at the light source is converted into collimated light through two times of reflection, the collimated light is further converged at one point, weak light is collected, and when the light source is applied to photobacterium detection, the light collection rate of photobacterium can be increased, and the amount of photobacterium reagent needed by single-time detecti