Optical device for protein flow detection

The utility model discloses an optical device for protein flow detection, which comprises a laser light source, a reflecting mirror, a dichroscope, a first lens, a second lens, a fluorescence detector, a third lens and a scattered light detector which are sequentially arranged, the dichroscope is configured to reflect the emitted light beam so as to change the propagation direction of the emitted light beam, and the first lens is configured to focus the emitted light beam reflected by the dichroscope into an excitation light spot; the second lens is arranged in a fluorescence projection light path of the dichroscope and is configured to focus fluorescence penetrating through the dichroscope to the fluorescence detector; and the third lens is arranged in a scattered light reflecting light path of the reflecting mirror and is configured to focus scattered light reflected by the reflecting mirror to the scattered light detector. The optical device provided by the utility model is high in signal-to-noise ratio, a