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Free-form surface design method for a collimator TIR lens.

Journal of the Optical Society of America. A, Optics, Image Science, and Vision

|May 4, 2016

Summary

A novel free-form (FF) surface design method enables precise control of light rays for axial-symmetrical collimators. This optical design tool ensures accurate illumination patterns on target planes, simplifying complex optical system analysis.

Area of Science:

Optics and Photonics
Optical Engineering
Applied Physics

Background:

Designing optical systems, particularly collimators, requires precise control over light ray paths.
Traditional methods may struggle with complex, non-spherical surface designs for specific illumination patterns.

Purpose of the Study:

To propose and validate a new free-form (FF) surface design method for axial-symmetrical collimator systems.
To enable the precise tailoring of illumination distributions on a target plane.

Main Methods:

Development of a free-form surface construction method for total internal reflection lenses.
Analysis of light ray paths using an exact analytical model and skew-ray tracing.
Validation through ZEMAX optical simulations.

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Main Results:

The proposed FF design method successfully directs incident rays to form specified image patterns.
Simulations show good agreement between the designed and actual illumination distributions.
The method is mathematically straightforward and computer-implementable.

Conclusions:

The FF surface design method is effective for general axial-symmetrical collimators.
This approach offers a practical tool for optical system design and analysis.
It facilitates the creation of custom illumination patterns with high fidelity.