eprintid: 663 rev_number: 13 eprint_status: archive userid: 12 dir: disk0/00/00/06/63 datestamp: 2014-07-03 22:02:14 lastmod: 2015-05-29 20:17:29 status_changed: 2014-07-03 22:02:14 type: report metadata_visibility: show item_issues_count: 0 creators_name: Bouwe van den Berg, J. creators_name: Castro, R. creators_name: Draisma, J. creators_name: Evers, J. creators_name: Hendriks, M. creators_name: Krehel, O. creators_name: Kryven, I. creators_name: Mora, K. creators_name: Szabó, B. creators_name: Zwiernik, P. title: Non-imaging Optics for LED-Lighting ispublished: pub subjects: other subjects: tech_dev studygroups: esgi84 companyname: Philips Lighting full_text_status: public abstract: In this report, several methods are investigated to rapidly compute the light intensity function, either in the far field or on a finite-distance screen, of light emanating from a light fixture with a given shape. Different shapes are considered, namely polygonal and (piecewise) smooth. In the first case, analytic methods are sought to circumvent the use of Monte Carlo methods and ray-tracing with large sample size. In the second case, refinements of the Monte Carlo method (notably using a bootstrap procedure) are devised to minimize the number of samples needed for a good approximation of the intensity function. date: 2012 citation: Bouwe van den Berg, J. and Castro, R. and Draisma, J. and Evers, J. and Hendriks, M. and Krehel, O. and Kryven, I. and Mora, K. and Szabó, B. and Zwiernik, P. (2012) Non-imaging Optics for LED-Lighting. [Study Group Report] document_url: http://miis.maths.ox.ac.uk/miis/663/1/p4.pdf