I t was simply a challenge perfect for the scientists at LPI: “Transfer the maximum monochromatic flux from a 1mm square Lambertian source onto a target that has an area of 4mm but is in the shape of a 16:9 ratio rectangle.”: Click here for the detail of the problem.
The problem was a tradition of the International Optical Design Conference or IODC. This 105 year old conference occurs every 4 years providing optical scientists and engineers from around the world an opportunity to meet in a structured yet informal setting. Each time the conference is planned, a problem is offered in advance. Scientists from around the world can present their solutions to the problem during one of the conference sessions. This year the conference was held in Jackson Hole, Wyoming, USA on June 16, 2010.
LPI Scientists are leaders in the field of non-imaging optics. Their designs and patented design methods are respected the world over. LPI Associate Scientist, Pablo Benitez and his PhD student Wang Lin decided to take up the challenge. The solution they presented was impressive. It implemented several state-of-the-art patented LPI technologies: SMS 2D XX optics, free-form grooved mirrors, and SMS 3D free-form microlens array optics with etendue-squeezing. One presenter commented that the etendue squeezing microlens was a “wonderful device” and the solution “combines some of the state-of-the-art work being done in nonimaging optics.