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Energy Express

Energy Express

  • Editor: Christian Seassal
  • Vol. 22, Iss. S2 — Mar. 10, 2014
  • pp: A567–A576

A hybrid simulated method for analyzing the optical efficiency of a head-mounted display with a quasi-crystal OLED panel

Kao-Der Chang, Chang-Yi Li, Jui-Wen Pan, and Kuei-Yuan Cheng  »View Author Affiliations

Optics Express, Vol. 22, Issue S2, pp. A567-A576 (2014)

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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. We adopt a hybrid simulated method to evaluate the light extraction efficiency (LEE) and far-field pattern in the air, and study the relationship between them. The simulation results show that OLEDs implanted with the QC structure can provide a collimated far-field pattern to increase the brightness. Using this 10-fold QC arrangement the maxima LEE of the OLEDs can be increased by 1.20 times. Compared with conventional OLEDs, the viewing angle of the OLED panel decreases from 120 degrees to 26 degrees with an improvement in the optical efficiency of the HMD system by 2.66 times. Moreover, the normalized on-axis intensity in the pupil of the eyepiece can be enlarged up to 3.95 times which suggests that the OLED panel can save 74.68% energy while achieving the same on-axis intensity as conventional OLEDs.

© 2014 Optical Society of America

OCIS Codes
(120.2820) Instrumentation, measurement, and metrology : Heads-up displays
(250.3680) Optoelectronics : Light-emitting polymers
(050.5298) Diffraction and gratings : Photonic crystals

ToC Category:
Light-Emitting Diodes

Original Manuscript: December 26, 2013
Manuscript Accepted: February 18, 2014
Published: March 10, 2014

Kao-Der Chang, Chang-Yi Li, Jui-Wen Pan, and Kuei-Yuan Cheng, "A hybrid simulated method for analyzing the optical efficiency of a head-mounted display with a quasi-crystal OLED panel," Opt. Express 22, A567-A576 (2014)

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