An automated method was developed to explore the landscape and find different congurations for fast freeform dioptric systems in the Long-Wave Infrared band for automotive application. It uses the Simultaneous Multiple Surfaces method.
In optical design, the designer's experience is critical. Indeed, an experienced optical designer will often choose a better starting point for optimization than an inexperienced one. Most of the time, lens design software use a local optimization algorithm, which is why the starting point is so important to get an excellent optical system. We present here an alternative to the classical optical design method and a solution to reduce the impact of the designer's experience. Our alternative couples the Simultaneous Multiple Surfaces (SMS) method, introduced by Benítez and Miñano with optimization in Zemax OpticStudio. The SMS method is a direct construction method of optical systems without optical aberrations for as many field points as the system contains surfaces. This method can deal with both aspheric and freeform optical systems depending on the dimension of the method implemented. Our implementation of the SMS method can design optical systems with three surfaces. We use the SMS method to define a freeform system with an F-number of 0.85. Then, we use this fast freeform system as a starting point to perform further optimization in Zemax OpticStudio. Finally, we achieve to design two diffraction-limited freeform systems, one over a square field of view of ±30° and another over a rectangular field of view of ±33° × ±26°.
The increasing demand of complex micro-optical products such as Diffractive Optical Elements (DOE) requires the development of new optical material processing micro- techniques especially for small-series production. Diamond turning machining is considered an ideal, mature production tool of DOE in ductile materials but not brittle ones. However, the progress in optical material UV-laser machining is proving to be a good candidate for the micro-structuring of glasses. Thus, by using this emergent UV-laser machining technique, DOE prototypes in C2036 have been made and show promising results.
The corrective features of diffractive optics, as well as their ability to reduce costs, weight, size of conventional optical systems, show the great potentiality of these optics. In this field, the main application carried out by SFIM ODS is the chromatic aberration correction for high quality imaging systems particularly in the infrared range. In section II, Basic properties of the surface relief Diffractive Optical Element are presented. Then, section III-IV discuss about hybrid optics, optical design and complementary analysis. Finally we present design and experimental results in sections V-VI.
Conference Committee Involvement (5)
Optical Design and Engineering VII
14 May 2018 | Frankfurt, Germany
Optical Design and Engineering VI
7 September 2015 | Jena, Germany
Optical Design and Engineering V
26 November 2012 | Barcelona, Spain
Optical Design and Engineering IV
6 September 2011 | Marseille, France
Optical Design and Engineering
2 September 2008 | Glasgow, Scotland, United Kingdom
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