Optical principle of bicycle taillights

- May 09, 2017 -

Cross section is the prism of isosceles right-angled triangle called full reflection prism. 


The isosceles right-angled triangle ABC represents a cross-section of a fully reflective prism, its two right-angled edges AB and BC denote two of the prism on each other perpendicular sideways.


If the light is vertically projected onto the AB plane, it will be injected into the prism in the original direction, shot to the AC surface, due to the angle of incidence (45 °) greater than the light from the glass injection into the air, the light will take place on the AC plane full reflection, along the direction of the BC to shoot from the prism. If the light is perpendicular to the AC plane, and after the prism is injected into the original direction, total reflection on AC, BC two surfaces will occur, and finally along the opposite direction of the incident, the opposite directions from the AC plane to shoot the life in many parts of this principle, such as bicycle taillights, use this principle.

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