3. OLED panel Organic light emitting diodes (OLEDs) with a quasi-crystal (QC) structure are analyzed and applied in a head-mounted display (HMD) system in this study.. The simulation results show that OLEDs implanted with the QC structure can provide a collimated far-field pattern to increase the brightness.Publication: K. D. Chang, C. Y. Li, J. W. Pan*, and K. Y. Cheng, "A hybrid simulated method for analyzing the optical efficiency of a head-mounted display with a quasi-crystal OLED panel," Opt. Express 22(S2), A567-A576 (2014).

An intracorporeal illumination system for providing uniform and wide-field illumination during minimally invasive surgery.Publication: J. W. Pan*, Y. C. Su, and Y. S. Chen, "Secondary optical element design for intracorporeal LED illumination system," Opt. Letters 39(2),224-227 (2014).

4. Intracorporeal LED illumination

1. J. W. Pan*, Y. C. Su, Y. S. Chen, "Secondary optical element design for intracorporeal LED illumination system," Opt. Letters 39(2), 224-227, Jan. 2014. IF 3.385, Rank 0.063 (SCI)2. W. S. Sun, C. L. Tien*, J. W. Pan, T. H. Yang, C. H. Tsuei, Y. H. Huang,"Simulation and Comparison of the Lighting Efficiency for Household Illumination with LEDs and Fluorescent Lamps," J. Opt. Soc. Korea 17(5), 376-383, October 2013. IF 1.022, Rank 0.58753. J. W. Pan*, H. H. Wang, "High contrast ratio prism design in a mini projector," Appl. Opt. 52(34), 8347-8354, Nov. 2013. IF 1.689, Rank 0.354 (SCI)4. J. W. Pan*, Y. W. Hu, "Design of a hybrid light guiding plate with high luminance for backlight system application," Journal of Display Technology 9(12), 965- 971, July 2013. IF 1.663, Rank 0.38 (SCI)5. J. W. Pan*, P. J. Tsai, K. D. Chang, and Y. Y. Chang, "Light extraction efficiency analysis of GaN-based light-emitting diodes with nanopatterned sapphire substrates," Appl. Opt. 52(7), 1358-1367, March 2013. IF 1.748, Rank 0.3417 (SCI)6. Y. C. Lee*, S. C. Yeh, Y. Y. Chou, P. S. Tsai, J. W. Pan, H. M. Chou, C. H. Hou, Y. Y. Chang, M. S. Chu, C. H. Wu and C. H. Ho, "High-efficiency InGaN-based LEDs grown on patterned sapphire substrates using nanoimprinting technology," Microelectron. Eng. 105, 86-90, January 2013. IF 1.557, Rank 0.417 (SCI)7. J. W. Pan*, and S. H. Tu, "Demonstration of a simplified optical mouse lighting module by integrating the non-Lambertian LED chip and the free-form surface," Appl. Opt. 51(15), 2834-2841, May 2012. IF 1.748, Rank 0.3417 (SCI)8. J. W. Pan*, and Y. W. Hu, "A light guide plate using periodical and single-sized microstructures to create a uniform backlight system," Opt. Letters 37 2665-2667, September 2012. IF 3.399, Rank 0.08 (SCI)9. J. W. Pan*, J. Y. Huang, C. M. Wang, H. F. Hong, and Y. P. Liang, "High concentration and homogenized Fresnel lens without secondary optics element," Opt. Communications. 284(19), 4283–4288, June 2011. IF 1.517, Rank 0.39. (SCI)10. J. W. Pan*, and S. H. Lin, "Achromatic design in the illumination system for a mini projector with LED source,” Opt. Express. 19(17), 15750-15759, August 2011. IF 3.753, Rank 0.06. (SCI)11. S. H. Tu*, S. Y. Wu, Y. C. Lee, J. W. Pan, C. H Kuo, C. M. Wang, and J. Y. Chang, “Functional imprinting structures on GaN-based light-emitting diodes for light pattern modulation and light extraction efficiency enhancement,” Opt. Review. 17(4), 379-384, May 2010. IF 0.55, Rank 0.80. (SCI)12. J. W. Pan*, S. H. Tu, W. S. Sun, C. M. Wang, and J. Y. Chang, “Integration of Non-Lambertian LED and Reflective Optical Element as Efficient Street Lamp,” Opt. Express. 18(2), 221-230, June 2010. IF 3.753, Rank 0.06. (SCI)13. C. M. Wang, H. I. Huang, J. W. Pan, K. Z. Kuo, H. F. Hong, H. Y. Shin, and J. Y. Chang*, “Single stage transmission type broadband solar concentrator” Optics Express, Vol. 18, Issue S2, pp. A118-A125, 118-125, June 2010. IF 3.753, Rank 0.06. (SCI)14. W. S. Sun*, K. D. Liu, J. W. Pan, C. L. Tien, and M. S. Hsieh, “Laser expander design of highly efficient Blu-ray disc pick-up head,” Opt. Express. 17(4), 235-2246, February 2009. IF 3.278, Rank 0.04. (SCI)15.S. H. Tu, J. W. Pan, C. H. Wang, Y. C. Lee, and J. Y. Chang, “New collection systems for multi LED light engines,” Opt. Review. 16(3), 1-5, February 2009. IF 0.529, Rank 0.77. (SCI)16.C. H. Tsuei, J. W. Pan, 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, November 2008. IF 3.88, Rank 0.04. (SCI)

International Journal Papers:

Optical Design LaboratoryLAB335

1.Mini-Projector:

2.Retainal HMD

A novel light separator with contrast ratio enhancement but maintaining the optical efficiency of the DLP projection system is proposed. The main capability of the novel light separator is to direct the uncontrolled light away from the image system.

Publication:1. Y. C. Huang; J. W. Pan, “High contrast ratio and compact-sized prism for DLP projection system ,” Opt. Express. 22 , 17016-17029 (2014)2.J. W. Pan*, H. H. Wang, “High contrast ratio prism design in a mini projector," Appl. Opt. 52(34), 8347-8354,(2013)3.  J. W. Pan* and C. H. Shih, "Speckle reduction and maintaining contrast in a LASER pico-projector using a vibrating symmetric diffuser," Opt. Express 22(6), 6464-6477 (2014).

A broad spectral bandwidth HMD system for retinal chip users and low vision aid users is presented. The system can reflect both visible and infrared rays. An HMD with an 8 mm exit pupil, 15 mm eye clearance, and 30° FOV was designed. The x − y polynomial surface makes the HMD compact.

Publication:1.J.W. Pan, C.H. Chiang, K. D. Huang, and C.U. Wu,“Demonstration of a broad band spectral head-mounted display with freeform mirrors ,” Opt. Express. 22 ,12785-12798 (2014)

National Chiao Tung University Associate ProfessorJui-Wen pan