7.8 Example — Doublet Lens Zernike
==================================

PDF section 7.8. Source script: ``KrakenOS/Examples/Examp_Doublet_Lens_Zernike.py``.

Loads a 36-element ``ZNK`` array (Noll-ordered Zernike coefficients) onto
the rear surface of the doublet to deform it. Tracing the same fan of rays
visualises the surface departure and the resulting wavefront effect.

.. figure:: ../../_static/manual/examples/08_doublet_zernike_a.png
   :align: center
   :alt: Doublet with a Zernike-defined surface (3D)

   Figure 15a. Doublet with a surface defined by Zernike-polynomial
   coefficients.

.. figure:: ../../_static/manual/examples/08_doublet_zernike_b.png
   :align: center
   :alt: Doublet with a Zernike-defined surface (2D)

   Figure 15b. Same system in 2D.

.. literalinclude:: ../../../../KrakenOS/Examples/Examp_Doublet_Lens_Zernike.py
   :language: python