|
Improvement of illumination uniformity for LED flat panel light by using micro-secondary lens array |
Optics Express, Vol. 20, Issue S6, pp. A788-A798 (2012)
http://dx.doi.org/10.1364/OE.20.00A788
Enhanced HTML 
Acrobat PDF (1360 KB)
Abstract
LED flat panel light is an innovative lighting product in recent years. However, current flat panel light products still contain some drawbacks, such as narrow lighting areas and hot spots. In this study, a micro-secondary lens array technique was proposed and applied for the design of the light guide surface to improve the illumination uniformity. By using the micro-secondary lens array, the candela distribution of the LED flat panel light can be adjusted to similar to batwing distribution to improve the illumination uniformity. The experimental results show that the enhancement of the floor illumination uniformity is about 61%, and that of the wall illumination uniformity is about 20.5%.
© 2012 OSA
OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(350.4600) Other areas of optics : Optical engineering
(220.2945) Optical design and fabrication : Illumination design
(080.4295) Geometric optics : Nonimaging optical systems
(080.4298) Geometric optics : Nonimaging optics
ToC Category:
Illumination Design
History
Original Manuscript: June 28, 2012
Revised Manuscript: August 24, 2012
Manuscript Accepted: August 27, 2012
Published: September 12, 2012
Citation
Hsiao-Wen Lee and Bor-Shyh Lin, "Improvement of illumination uniformity for LED flat panel light by using micro-secondary lens array," Opt. Express 20, A788-A798 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-S6-A788
Sort: Year | Journal | Reset
References
- C. H. Tsuei, J. W. Pen, and W. S. Sun, “Simulating the illuminance and the efficiency of the LED and fluorescent lights used in indoor lighting design,” Opt. Express 16(23), 18692–18701 (2008). [CrossRef] [PubMed]
- H. Ries and A. Rabl, “Edge-ray principle of nonimaging optics,” J. Opt. Soc. Am. A 11(10), 2627–2632 (1994). [CrossRef]
- P. A. Davies, “Edge-ray principle of nonimaging optics,” J. Opt. Soc. Am. A 11(4), 1256–1259 (1994). [CrossRef]
- L. Sun, S. Jin, and S. Cen, “Free-form microlens for illumination applications,” Appl. Opt. 48(29), 5520–5527 (2009). [CrossRef] [PubMed]
- T. C. Teng and M. F. Kuo, “Highly precise optical model for simulating light guide plate using LED light source,” Opt. Express 18(21), 22208–22214 (2010). [CrossRef] [PubMed]
- G. Kochanski, “Monte Carlo simulation,” http://kochanski.org/gpk
Cited By |
 Alert me when this paper is cited |
OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.
Figures
|
|
|
|
| Fig. 1 | Fig. 2 | Fig. 3 |
|
|
|
|
| Fig. 4 | Fig. 5 | Fig. 6 |
|
|
|
|
| Fig. 7 | Fig. 8 | Fig. 9 |
|
|
|
|
| Fig. 10 | Fig. 11 | Fig. 12 |
|
|
|
|
| Fig. 13 | Fig. 14 | Fig. 15 |
|
|
|
|
| Fig. 16 | Fig. 17 | |
Related Journal Articles 
- LED beam shaping lens based on the near-field illumination (OE)
- Calculating model of light transmission efficiency of diffusers attached to a lighting cavity (OE)
- Analysis of condition for uniform lighting generated by array of light emitting diodes with large view angle (OE)
- Design of LED freeform optical system for road lighting with high luminance/illuminance ratio (OE)
- Highly precise optical model for simulating light guide plate using LED light source (OE)
OSA is a member of 