Convex prisms and a laser reflection device based on convex prisms

The utility model relates to an optical device and discloses a laser reflection device based on convex prisms. The laser reflection device comprises a pair of convex prisms which are arranged at the laser reflection place and the laser incidence place respectively; the height tolerance of the optic axis of the two convex prisms and the surface of a guide rail is 1mm-3mm; the incident plane of the convex prism is an arc convex surface; and the curvature radius of the arc convex surface is 15mm-30mm. The convex prisms can compress the reflected beams in the meantime of playing a reflection effect, so that the convex prisms can play a beam compressing effect; and the reflection device can enable the laser to reflect for many times, and thus the laser energy can be enhanced for tens of times, and furthermore, weak light of excited fluorescent light and Raman scattering light and the like can also be enhanced.