A Taguchi PCA fuzzy-based approach for the multi-objective extended optimization of a miniature optical engine

Fang Yi-Chin*, Tzeng Yih-Fong, Li Si-Xiang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

18 Scopus citations


The paper proposes a hybrid approach, integrating a combination of Taguchi methods, principal component analysis (PCA) and fuzzy theory for the extended optimization of multiple quality characteristics in optimization experiments of non-image optics; a miniature light emitting diode pocket-sized projection display system is demonstrated in this research as an optimization sample. Traditionally, the performance of projector optics can be evaluated by modulation transfer function and its optimization method is DLS (damped least square). Comparatively, light efficiency and uniformity play a part in non-image optics where the optimized method is based on the concept of non-sequential rays; for example, in the optical engine of a projector, which demands better light efficiency and uniformity. The DLS method is occasionally employed in the optimization of non-image optics such as optical engines, but it is sometimes sensitive to the number of rays employed and some over-optimization problems. In this research we propose as an alternative method to optimize in an extended way the optical engine of a miniature projector. Control factors were checked and then repeatedly examined before the experiments started. In the experiment, optimization works through an L18 orthogonal array. Finally, this proposed optimization work shows good success for the optimization of non-image optical engines because this method is less sensitive to the number of non-sequential rays. Compared with the initial design, the optimized parameter design is able to improve the luminous flux by 11.46 dB, the illumination uniformity by 3.14 and the packing size by 1.125 dB.

Original languageEnglish
Article number175108
JournalJournal of Physics D: Applied Physics
Issue number17
StatePublished - 07 09 2008
Externally publishedYes


Dive into the research topics of 'A Taguchi PCA fuzzy-based approach for the multi-objective extended optimization of a miniature optical engine'. Together they form a unique fingerprint.

Cite this