Design of a collimated UV-LED exposure unit based on light spread function method

Shin Hong Kuo, Chi Feng Chen

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A collimated and uniform UV-LED exposure unit (EU) applied in a printed circuit board is investigated by the light spread function (LSF) method. To accurately calculate the source-to-source distance of collimated UV-LED sources and achieve uniform irradiance in the exposure area, we propose a regional maximally flat condition for the LSF. This regional maximally flat condition contains irradiance information from multiple positions in two dimensions. To verify the design results, we built this parameter into optical simulation software and used it in our LSF method calculations. The obtained collimated UV-LED EU results show uniformity and average irradiance values of 98.23% and 43.32 mW/cm2, respectively. Thus, we can conclude that the proposed LSF method is effective for achieving a uniform irradiance distribution.

Original languageEnglish
Pages (from-to)5542-5549
Number of pages8
JournalApplied Optics
Volume56
Issue number19
DOIs
StatePublished - 1 Jul 2017

Fingerprint

Dive into the research topics of 'Design of a collimated UV-LED exposure unit based on light spread function method'. Together they form a unique fingerprint.

Cite this