Scanning beam splitting and speckle reduction system for laser backlight TV

Shao-hua SONG

doi:10.3788/OPE.20192702.0271

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Scanning beam splitting and speckle reduction system for laser backlight TV

Modern Applied Optics | 更新时间：2020-08-13

- Scanning beam splitting and speckle reduction system for laser backlight TV
- Optics and Precision Engineering Vol. 27, Issue 2, Pages: 271-278(2019)
- 作者机构：
  
  1.山西大学激光光谱研究所量子光学与光量子器件国家重点实验室，山西太原 030006
  2.极端光学协同创新中心，山西太原 030006
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20192702.0271
  CLC： O439; TN949.15
- Received：21 September 2018，
  
  Accepted：20 November 2018，
  
  Published：15 February 2019
- 稿件说明：
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Shao-hua SONG. Scanning beam splitting and speckle reduction system for laser backlight TV[J]. Optics and precision engineering, 2019, 27(2): 271-278.
DOI：

Shao-hua SONG. Scanning beam splitting and speckle reduction system for laser backlight TV[J]. Optics and precision engineering, 2019, 27(2): 271-278. DOI： 10.3788/OPE.20192702.0271.

摘要

针对单颗激光二极管光功率过高不能直接用于激光液晶电视光源阵列的限制，本文设计了将高功率激光束分为多束功率接近的子光束的扫描分光系统，从而为液晶电视提供激光背光。系统中激光器发出的准直光束经过扫描振镜进行二维扫描后，经凸透镜和柱面透镜会聚成一条细线型光束耦合进一维多模光纤阵列，从而达到分光的目的。此外，基于扫描振镜和多模光纤实现了系统散斑的抑制。实验结果显示，11根光纤的平均单根出射功率为674.13 μW，离散系数为16%，平均散斑对比度为0.162。使用激光作为背光源的激光液晶电视因其优秀的显示性能而具备强大的市场竞争力和广阔的市场前景。

Abstract

Lasers demonstrate characteristics of high brightness and good monochromaticity. Moreover

the cost of liquid crystal display (LCD) planes are low as they have been developed extensively. Because of their excellent display performance

laser LCD televisions (TVs)

which use lasers as their backlight

demonstrate strong market competitiveness and extensive market potential. The use of a light source array is a common technique for backlight system design. To limit the high power supplied by a single laser diode to an array

this study designed a scanning beam splitting system that divided the high-power laser beam into multiple sub-beams with sufficient power to provide a laser backlight for LCD TVs. The collimated laser beam in this system was initially scanned in two dimensions by a galvanometer scanner and then made to converge into a narrow linear beam by a convex lens and a cylinder lens; finally

it was coupled into an optical multimode fiber array. Thus

beam splitting was achieved. In addition

based on the scanning mirror and multimode fibers

the system also exhibited a speckle reduction effect. The experimental results demonstrated that the coefficient of variation in the average output power of 11 fibers is 16%

with an average value of 674.13 μW

and their average speckle contrast is 0.162.

关键词

Keywords

references

黄子强.液晶显示原理[M].北京:国防工业出版社, 2008.

HUANG Z Q. Principle of Liquid Crystal Display [M]. Beijing: National Industry Defense Press, 2008. (in Chinese)

李继军, 聂晓梦, 甄威, 等.显示技术比较及新进展[J].液晶与显示, 2018, 33(1):74-84.

LI J J, NIE X M, ZHEN W, et al .. New developments and comparisons in display technology[J]. Chinese Journal of Liquid Crystals and Displays , 2018, 33(1):74-84. (in Chinese)

季洪雷, 周青超, 潘俊, 等.量子点液晶显示背光技术[J].中国光学, 2017, 10(5):666-680.

JI H L, ZHOU Q CH, PAN J, et al .. Advances and prospects in quantum dots based backlights[J]. Chinese Optics , 2017, 10(5):666-680. (in Chinese)

付瀚毅, 刘伟奇, 柳华, 等.高清激光显示中的色彩复现系统[J].光学精密工程, 2014, 22(7):1774-1780.

FU H Y, LIU W Q, LIU H, et al .. Color-recurrent system in high-definition laser display[J]. Opt. Precision Eng ., 2014, 22(7):1774-1780. (in Chinese)

DKUDA Y, DNODA K, FUJIEDA I. Laser backlight unit based on a leaky optical fiber[J]. Optical Engineering , 2012, 51(7):4001-4009.

FUJIEDA I, ARIZONO K. Backlight units based on light extraction from a curved optical fiber[J]. Optical Engineering , 2014, 53(6):065104.

王志平, 曹银花, 刘友强, 等.蓝光激光二极管平板显示背光模组设计[J].中国激光, 2017, 44(5):194-200.

WANG ZH P, CAO Y H, LIU Y Q, et al .. Design of blue laser diode flat-panel display backlight module[J]. Chinese Journal of Lasers , 2017, 44(5):194-200. (in Chinese)

周羲君, 冯仕猛.均匀照明LED背光板设计[J].液晶与显示, 2012, 27(6):774-779.

ZHOU X J, FENG SH M. Design of high uniformity LED backlight[J]. Chinese Journal of Liquid Crystals & Displays , 2012, 27(6):774-779. (in Chinese)

DAINTY J C, ENNOS A E, FRANON M, et al .. Laser speckle and related phenomena[J]. Optica Acta International Journal of Optics , 1976, 23(10):842-843.

CHANG R S, TSAI J Z, LI T Y, et al .. LED backlight module by lightguide-diffusive component[J]. Journal of Display Technology , 2012, 8(2):79-86.

FAN T Y. Laser beam combining for high-power, high-radiance sources[J]. IEEE Journal of Selected Topics in Quantum Electronics , 2005, 11(3):567-577.

MA Q, XU C Q. Analysis of laser speckle reduction utilizing microlens-array-based projection screen[J]. Journal of the Optical Society of America A Optics Image Science & Vision , 2017, 34(9):1595-1601.

廖延彪.光纤光学:原理与应用[M].北京:清华大学出版社, 2010.

LIAO Y B. Fiber Optics: Principles and Applications [M]. Beijing: Tsinghua University Press, 2010. (in Chinese)

TONG Z, SHEN W, SONG S, et al .. Combination of micro-scanning mirrors and multi-mode fibers for speckle reduction in high lumen laser projector applications[J]. Optics Express , 2017, 25(4):3795-3804.

KAJENSKI P J, FUHR P L, HUSTON D R. Mode coupling and phase modulation in vibrating waveguides[J]. Journal of Lightwave Technology , 2002, 10(9):1297-1301.

郁道银, 谈恒英.工程光学[M].北京:机械工业出版社, 2011.

YU D Y, TAN H Y. Engineering Optics [M]. Beijing: China Machine Press, 2011. (in Chinese)

徐益勤, 张宇宁, 李晓华.显示器件大面积闪烁视觉生理基础与改善方法[J].电子器件, 2008, 31(5):1417-1420.

XU Y Q, ZHANG Y N, LI X H. Physiology analysis and reduction method for large area flicker of displays[J]. Chinese Journal of Electron Devices , 2008, 31(5):1417-1420. (in Chinese)

张建萍, 冯秀恒, 黄廉卿, 等.数字X线影像仪的激光扫描光学系统设计[J].光学精密工程, 2008, 16(2):202-207.

ZHANG J P, FENG X H, HUANG L Q, et al .. Design of laser scanning optical system for computed radiography[J]. Opt. Precision Eng ., 2008, 16(2):202-207. (in Chinese)

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