Optical path length from geometrical path length and refractive index¶

Geometrical path length is the Euclidean distance integrated along a light ray between any two points.

Conditions:

The environment must be homogeneous.

Links:

Wikipedia, first formula.

optical_path¶

Optical path length of the light ray. See optical_distance.

Symbol:: Lambda
Latex:: \(\Lambda\)
Dimension:: length

geometrical_path¶

Geometrical path length of the light ray. See distance.

Symbol:: s
Latex:: \(s\)
Dimension:: length

refractive_index¶

relative_refractive_index of the medium.

Symbol:: n
Latex:: \(n\)
Dimension:: dimensionless

law¶

Lambda = n * s

Latex:: \[\Lambda = n s\]