Portable optical detector

The utility model relates to a portable optical detector and belongs to the technical field of optical detection. The device comprises a front optical detection system, a sample test tube placement position (20), a rear optical detection system and an analysis processing system, light emitted by a light source (10) is received by an optical detector (50) after passing through the front optical detection system, the sample test tube placement position (20) and the rear optical detection system, and the front optical detection system sequentially comprises a lens I (12), an optical filter I (14)and a diaphragm I (16); wherein the rear optical detection system is sequentially provided with a spherical lens (40), a diaphragm II (41), an optical filter II (42) and a lens III (44), and the spherical lens (40) collects fluorescence within nearly 90 degrees, passes through the diaphragm II (41) and then reaches the optical detector (50) through the optical filter II (42) and the lens III (44). The portable optical de