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Joanneum Research / Calulation Algorithms for Free-Form-Mikro-Optical-Elements

Joanneum Research / Calulation Algorithms for Free-Form-Mikro-Optical-Elements
Country/Institute
Austria • Joanneum Research (JOR)

Equipment: Joanneum Research / Calulation Algorithms for Free-Form-Mikro-Optical-Elements
Technique: Self-developed calculation algorithms
Acquisition year: 2015 / ongoing development
Responsible: Claude Leiner /  

Description: Free-form-optics offer the ability for creating tailor made radiant intensity or irradiance distributions, which cannot be achieved using conventional optical lenses. Our self-developed calculation algorithms allow the calulation of very flat (10-200 µm) free-form micro-optical elements (FF-MOEs) with comparable optical functionalities as conventional voluminous FF lenses. 

Specifications: 

  • Self-developed algorithms offer the highest degree of flexibility to develop tailor made optical components for arbitrary optical problems.
  • FF-MOEs have the functionality of conventional voluminous FF optics and conventional optics, but whose maximum height is freely scalable in the range 5 – 200 µm.
  • The very low height of the structures enables the use of alternative manufacturing methods such as e.g. the grayscale laser lithography for the fabrication of master structures or the roll-to-roll process for mass production.
  • Through an iterative interaction between the computational algorithm and ray-tracing simulations, the calculated FF-MOEs can be optimized within the whole optical system.
  • The light management capabilities of FF-MOEs have already been tested for various topics and applications e.g. direct lit applications, sensor applications, logo projection, wall-wash applications, generation of tailor made radiant intensity distributions, etc.

Link for additional information (if any): 
https://www.joanneum.at/materials/publikationen/detail/optical-design-of-freeform-micro-optical-elements-and-their-fabrication-combining-maskless-laser-direct-write-lithography-and-replication-by-imprinting
https://www.led-professional.com/resources-1/articles/smart-design-of-freeform-micro-optical-elements-for-thin-direct-lit-luminaires
https://opg.optica.org/osac/fulltext.cfm?uri=osac-3-11-3237&id=442525