Patent ID: 9703086
Date: 2017-07-11
CPC Classifications: G02B

Claim:
1. A beam splitter comprising: a body including an inlet and an outlet, the inlet being configured to receive external beam; a main reflection portion located on a first side of the body, and the main reflection portion and the outlet having a first rotating angle and a second rotating angle respectively so that the main reflection portion reflects the external beam to produce a main beam; a sub reflection portion located on the first side of the body adjacent to the main reflection portion, an angle being defined between the sub reflection portion and the main reflection portion, and the sub reflection portion reflecting the external beam to produce a sub beam; a refraction portion located on a second side of the body proximate to the inlet and having a third rotating angle different from the inlet, the sub beam projecting out of the refraction portion so as to produce a deflective projection angle of the sub beam, and further having a refractive index different from that of air so as to change the deflective projection angle of the sub beam.