發光二極體於投影顯示照明之應用

Application of LED for Projector Illumination

陳政寰(Cheng-Huan Chen)

《科儀新知》 155期 (2006/12) Pp. 19-24

https://doi.org/10.29662/IT.200612.0003

摘要

投影顯示之照明系統須將光能量集中照明於一小面積與小角度之內，相較於其他照明之應用，其集光效率之考量更為嚴苛，亦為發光二極體於投影顯示照明應用中最主要之技術課題。本文將介紹投影機之照明光學系統，再將發光二極體作為投影光源之優缺點，和傳統投影光源比較加以闡述。並對目前以發光二極體作為投影光源之照明光學系統以及針對投影照明應用相關發光二極體之發展作一回顧。

並列摘要

The function of illumination optics for projection displays is to direct light source onto a small area of microdisplay within a limited incident solid angle, and therefore the collection efficiency is especially important compared to other illumination applications, which is also the main technical issue for LED application to projection displays. This paper starts from the introduction of projector illumination optics and then illustrates the merit and drawback of exploiting LED as the light source for projection displays by comparing LED with traditional projector lamps. Finally a review on the LED illumination optics for projectors and development of LED dedicated for projectors will be given.