Optimization of freeform surfaces using intelligent deformation techniques for LED applications
-
Annie Shalom Isaac
and
Cornelius Neumann
Abstract
For many years, optical designers have great interests in designing efficient optimization algorithms to bring significant improvement to their initial design. However, the optimization is limited due to a large number of parameters present in the Non-uniform Rationaly b-Spline Surfaces. This limitation was overcome by an indirect technique known as optimization using freeform deformation (FFD). In this approach, the optical surface is placed inside a cubical grid. The vertices of this grid are modified, which deforms the underlying optical surface during the optimization. One of the challenges in this technique is the selection of appropriate vertices of the cubical grid. This is because these vertices share no relationship with the optical performance. When irrelevant vertices are selected, the computational complexity increases. Moreover, the surfaces created by them are not always feasible to manufacture, which is the same problem faced in any optimization technique while creating freeform surfaces. Therefore, this research addresses these two important issues and provides feasible design techniques to solve them. Finally, the proposed techniques are validated using two different illumination examples: street lighting lens and stop lamp for automobiles.
References
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Articles in the same Issue
- Cover and Frontmatter
- Editorial
- Reviewer recognition and editor’s note
- Community
- News
- Topical Issue: Optical Coatings
- Editorial
- Special issue on optical coatings
- Review Article
- Simulation of the optical coating deposition
- Research Articles
- ALD anti-reflection coatings at 1ω, 2ω, 3ω, and 4ω for high-power ns-laser application
- Determination of refractive index and thickness of YbF3 thin films deposited at different bias voltages of APS ion source from spectrophotometric methods
- Effects of fixture rotation on coating uniformity for high-performance optical filter fabrication
- Design and manufacture of super-multilayer optical filters based on PARMS technology
- Tutorial
- Monolithic photonic integration for visible and short near-infrared wavelengths: technologies and platforms for bio and life science applications
- Review Articles
- Optimization of freeform surfaces using intelligent deformation techniques for LED applications
- On-chip photonic microsystem for optical signal processing based on silicon and silicon nitride platforms
- Letter
- On-chip Mach-Zehnder interferometer for OCT systems
- Research Article
- Broadband and scalable optical coupling for silicon photonics using polymer waveguides
