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SMS-based optimization strategy for ultra-compact SWIR telephoto lens design
Wang Lin1, Pablo Benítez, Juan C Miñano
1CEDINT, Universidad Politécnica de Madrid, Spain. wang.lin@cedint.upm.es
Optics Express
|April 27, 2012
Summary
A novel optical design strategy simplifies rotational aspheres using the SMS method and parameter optimization. This approach enables ultra-compact, high-performance lens designs, even for complex systems like SWIR telephoto lenses.
Area of Science:
- Optical Engineering
- Lens Design
- Aspheric Optics
Background:
- Designing rotational aspheres often requires numerous parameters, leading to complex optimization processes.
- Existing methods may struggle with controlling aberrations for complex lens systems.
Purpose of the Study:
- To present a new, parameter-efficient optical design strategy for rotational aspheres.
- To demonstrate the effectiveness of this strategy in achieving ultra-compact and high-performance lens designs.
Main Methods:
- Utilizing the Sequential Magnification (SMS) method to design aspheres within a system of simpler surfaces.
- Optimizing free parameters and employing Forbes series expansion for SMS surfaces.
- Incorporating a second optimization phase with the expanded SMS surfaces.
Main Results:
- Successfully designed rotational aspheres with a reduced number of parameters.
- Demonstrated effective control of skew rays despite SMS design using meridian rays.
- Achieved ultra-compact designs with excellent performance when applied to a SWIR telephoto lens.
Conclusions:
- The presented SMS-based optical design strategy offers an efficient method for creating complex aspheric lenses.
- This technique is particularly effective for developing compact, high-performance optical systems in specific spectral bands like SWIR.
