Lens Optimization and Zemax File Support

New features:

• Simplified materials of each surface from [mat1, mat2] combination to only [mat2] for future lens material optimization.
• Added Zemax file IO support. DeepLens now supports .zmx file IO, but only for a limited number of optical surfaces.
• Introduced task-driven lens design. Try it by running python 4_task_lens.py! Remember to specify your own ImageNet dataset path.

v1.0

DeepLens

Differentiable rendering with ray tracing, End-to-End lens design with 5 lines of code.