  Optical systems are becoming increasingly important by resolving many
bottlenecks in today's communication, electronics, and biomedical systems.
However, given the continuous nature of optics, the inability to efficiently
analyze optical system models using traditional paper-and-pencil and computer
simulation approaches sets limits especially in safety-critical applications.
In order to overcome these limitations, we propose to employ higher-order-logic
theorem proving as a complement to computational and numerical approaches to
improve optical model analysis in a comprehensive framework. The proposed
framework allows formal analysis of optical systems at four abstraction levels,
i.e., ray, wave, electromagnetic, and quantum.
