Angle of light deflection in prism

A prism, an optical prism, is a body made of a homogeneous material transparent to optical radiation, bounded by flat reflecting and refractive surfaces located at strictly defined angles to each other. With a small angle of incidence of the incoming beam, the angle of deflection of the beam depends only on the angle between the faces of the prism and the refractive index of the prism.

Conditions:

1. The deviation angle and the incident angle are small.

Links:

1. Wikipedia.

deviation_angle

angle of deviation in the prism.

Imagine a ray falling on the prism and a ray coming out of the prism. Let’s continue these rays inside the prism. Then the angle of intersection of these rays, looking towards the output beam, will be called the angle of deviation.

Symbol:

b

Latex:

\(b\)

Dimension:

angle

face_angle

angle between faces of the prism.

Symbol:

a

Latex:

\(a\)

Dimension:

angle

relative_refractive_index

relative_refractive_index of the prism.

Symbol:

n

Latex:

\(n\)

Dimension:

dimensionless

law

b = a * (n - 1)

Latex:

\[b = a \left(n - 1\right)\]