3. Prisms#
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3.1. Ray optics#
Here’s a taste of what ray optics is.
Lens flare artifact.
Lens flare diagram.
3.2. Prisms#
Prism Type |
Diagram |
|---|---|
Dove |
|
Penta |
|
Retro |
|
Anamorph |
|
Wedge |
|
3.2.1. Uses of prisms#
3.2.1.1. Dispersion#
\[
\theta = (n - 1) \phi
\]
This is desperive because the refractive index is a function of wavelength, i.e. \(n(\lambda)\).
3.2.1.2. Beam bending#
This is better than a mirror because total internal reflection (TIR) is wavelength independent.
3.2.1.3. Retro-reflection#
3.2.1.4. Image rotation#
3.2.1.5. Beam scanning#
