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

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

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 r...

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Veröffentlicht in:SID International Symposium Digest of technical papers 2017-05, Vol.48 (1), p.1670-1672
Hauptverfasser: Qibin, Feng, Qigong, Li, Xiaojun, Zhang, Dejun, Li, Zuchuan, Shi, Guoqiang, Lv
Format: Artikel
Sprache:eng
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Collimation
Defense industry
Diffusers
Efficiency
LCD
LED backlight
lens array
Lenses
Light emitting diodes
Luminance
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container_issue 1
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container_title SID International Symposium Digest of technical papers
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creator Qibin, Feng
Qigong, Li
Xiaojun, Zhang
Dejun, Li
Zuchuan, Shi
Guoqiang, Lv
description 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.
doi_str_mv 10.1002/sdtp.11972
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subjects Collimation
Defense industry
Diffusers
Efficiency
LCD
LED backlight
lens array
Lenses
Light emitting diodes
Luminance
title P‐109: Lens Array Design for Collimated LED Backlight in Helmet‐Mounted Display
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