P‐109: Lens Array Design for Collimated LED Backlight in Helmet‐Mounted Display | Zendy

Qibin Feng | Zendy; Qigong Li | Zendy; Xiaojun Zhang | Zendy; Dejun Li | Zendy; Zuchuan Shi | Zendy; Guoqiang Lv | Zendy

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P‐109: Lens Array Design for Collimated LED Backlight in Helmet‐Mounted Display

Author(s) -

Qibin Feng,

Qigong Li,

Xiaojun Zhang,

Dejun Li,

Zuchuan Shi,

Guoqiang Lv

Publication year - 2017

Publication title -

sid symposium digest of technical papers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.351

H-Index - 44

eISSN - 2168-0159

pISSN - 0097-966X

DOI - 10.1002/sdtp.11972

Subject(s) - backlight , collimated light , diffuser (optics) , optics , planar , lens (geology) , full width at half maximum , luminance , enhanced data rates for gsm evolution , computer science , liquid crystal display , physics , light source , computer graphics (images) , computer vision , laser

It is better for LED backlight in helmet‐mounted display to provide collimated light to achieve high efficiency. The paper presents a simple design method for planar lightsource. The edge light theory is exploited to make the planar lightsource become a virtual spot lightsource. The practical test results show that the central luminance of the backlight with the lens array has 320% increase than the backlight without the lens array. FWHM decreases from 39° with 2 diffuser fdms to 12° with 1 diffuser film and the lens array.

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