CN107688271A - 应用波长转换原理的新型光源装置 - Google Patents

应用波长转换原理的新型光源装置 Download PDF

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CN107688271A
CN107688271A CN201610631847.9A CN201610631847A CN107688271A CN 107688271 A CN107688271 A CN 107688271A CN 201610631847 A CN201610631847 A CN 201610631847A CN 107688271 A CN107688271 A CN 107688271A
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light
wavelength
blue
laser
light source
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刘西锋
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Qingdao Blue Rainbow Photoelectric Technology Co Ltd
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Qingdao Blue Rainbow Photoelectric Technology Co Ltd
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/20Lamp housings
    • G03B21/2006Lamp housings characterised by the light source
    • G03B21/2033LED or laser light sources
    • G03B21/204LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/48Laser speckle optics
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133614Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Projection Apparatus (AREA)

Abstract

一种应用波长转换原理的新型光源装置,其特征在于,包括沿光轴方向依次间隔设置的激发光源1、波长转换层2和滤光层3,该激发光源1采用UV激光或短波长蓝光激光,波长范围为300—410nm;该波长转换层2用于将UV光或短波长蓝光转换为红、绿、蓝三色光出射;该滤光层3用于反射UV或短波长蓝光波段(300—410nm)的光,同时透射可见光波段(450—650nm)的光。本发明的优点是:在激光作为激发源的波长转换型光源中,有效避免激光直射人体造成的危险,并解决了近紫外和短波长蓝光对于人眼的伤害,解决了激光光源导致的显示画面散斑问题。既兼顾了安全性,又兼顾了显示性能。

Description

应用波长转换原理的新型光源装置
技术领域
本发明涉及一种应用波长转换原理的新型光源装置,可用于液晶背光源或者投影光源。
背景技术
激光光源目前在投影、平板显示领域开始广泛应用。由于三基色激光技术并不成熟,通常采用1个单色激光+其它光源(LED光源或者荧光粉受激发光装置)。
例如最早三菱公布的激光背光方案,采用的是红光激光+蓝、绿光LED的形式。由于采用红光激光作为光源使用,红光激光部分可能对人眼及人体健康有较大伤害,同时带来显示画面上的散斑噪声。
而单色激光+荧光粉受激发光的混合光源,通常采用蓝光激光(通常在440nm—470nm)作为激发源,红、绿两种荧光粉作为受激发光源,最终实现的是蓝色激光+红色受激光源+绿色受激光源的混合光源。混合光源中的蓝光是单一波长的激光,同时为了激发效率考虑,蓝光的波长一般较短。因此混合光源中的蓝光成分对人眼及人体健康有较大伤害,同时也存在画面散斑噪声问题。
目前光峰科技已经考虑到上述问题,开始开发相关技术并申请了专利。其典型的专利为“基于波长转换的光源及其二次激发方法”(专利申请号201010531498.6):第一峰值波长的激发光(UV光)的激发光源,利用第一光波长转换材料,用来吸收激发光并激发具有第二峰值波长的光(蓝光);同时包括第二光波长转换材料,用来吸收该具有第二峰值波长的光并激发具有第三峰值波长(红光、绿光)的受激发光。此种做法可有效避免原始光源直接出射的问题。但是由于采用了二次激发的方式,效率必然受到很大影响,同时蓝光既是出射光,又同时是第三峰值波长的激发源,为了保证效率,蓝光的波长通常较短,直接出射会对人眼产生较大伤害。
发明内容
本发明旨在提供一种应用波长转换原理的新型光源装置,解决当前以激光作为激发源的显示光源存在的下述问题 : 1)因波长短、能量高,容易对人体造成伤害;2)显示光源的蓝光危害;3)激光直接作为显示光源导致的显示画面散斑噪声问题。
本发明的技术方案是:一种应用波长转换原理的新型光源装置,其特征在于,包括沿光轴方向依次间隔设置的激发光源1、波长转换层2和滤光层3,该激发光源1采用UV激光或短波长蓝光激光,波长范围为300—410nm;该波长转换层2用于将UV光或短波长蓝光转换为红、绿、蓝三色光出射;该滤光层3用于反射UV或短波长蓝光波段(300—410nm)的光,同时透射可见光波段(450—650nm)的光。
本发明的优点是:在激光作为激发源的波长转换型光源中,有效避免了激光直射人体造成的危险,并解决了近紫外或短波长蓝光对于人眼的伤害,同时有效消除了显示画面散斑问题。既兼顾了安全性,又兼顾了显示性能。
附图说明
图1是本发明的基本构造示意图。
具体实施方式
参见图1,本发明光源的基本结构主要特征如下:
1)激发光源1:为UV激光或短波长蓝光激光,波长范围为300—410nm。
2)波长转换层2:主要作用是吸收UV光或短波长蓝光,将UV光或短波长蓝光转换为红、绿、蓝三色光出射。其中:
蓝光波长为460—480nm。这个波长既保证了UV光或短波长蓝光激发转换的效率,又降低了对人眼的伤害。
绿光波长为530—570nm。
红光波长为620—640nm。
波长转换层2可以用量子点材料薄层,其特点是可以吸收较短波长的光发射较长波长的光。出射光的峰值波长由量子点的颗粒直径控制(常规技术),能够精确得到所需要的波长,并且有较窄的半波宽。
3)滤光层3的作用是反射UV或短波长蓝光波段(300—410nm)的光,同时透射可见光波段(450—650nm)的光。另外,滤光层3将激发光源(紫外光或短波长蓝光 )阻挡在最终的出射光之外,使得用户避免激光或短波长蓝光造成的伤害。
4)滤光层3的出射光为白光,包含红、绿、蓝三基色的光。如果波长转换层2采用了量子点材料,出射的白光的红、绿、蓝三基色的光的半波宽均会在40nm以下。应用于液晶显示或者投影显示将取得较高的色域范围(>100%NTSC)。

Claims (3)

1.一种应用波长转换原理的新型光源装置,其特征在于,包括沿光轴方向依次间隔设置的激发光源1、波长转换层2和滤光层3,该激发光源1采用UV激光或短波长蓝光激光,波长范围为300—410nm;该波长转换层2用于将UV光或短波长蓝光转换为红、绿、蓝三色光出射;该滤光层3用于反射UV或短波长蓝光波段(300—410nm)的光,同时透射可见光波段(450—650nm)的光。
2.根据权利要求1所述的应用波长转换原理的新型光源装置,其特征在于,所述的波长转换层2转换出射的蓝光波长为460—480nm,绿光波长为530—570nm,红光波长为620—640nm。
3.根据权利要求1所述的应用波长转换原理的新型光源装置,其特征在于,所述的波长转换层2为量子点材料薄层,能够吸收较短波长的光发射较长波长的光,出射光的波长由量子点的颗粒直径控制,能够精确得到所需要的峰值波长,并且有较窄的半波宽。
CN201610631847.9A 2016-08-04 2016-08-04 应用波长转换原理的新型光源装置 Pending CN107688271A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108957860A (zh) * 2018-08-22 2018-12-07 京东方科技集团股份有限公司 显示装置及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102410499A (zh) * 2010-11-03 2012-04-11 深圳市光峰光电技术有限公司 基于光波长转换的光源及其二次激发方法
CN103278961A (zh) * 2013-04-28 2013-09-04 京东方科技集团股份有限公司 一种液晶显示装置
CN105467737A (zh) * 2015-12-29 2016-04-06 海信集团有限公司 一种激光光源装置和激光投影设备
CN205910484U (zh) * 2016-08-04 2017-01-25 青岛蓝之虹光电技术有限公司 应用波长转换原理的新型光源装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102410499A (zh) * 2010-11-03 2012-04-11 深圳市光峰光电技术有限公司 基于光波长转换的光源及其二次激发方法
CN103278961A (zh) * 2013-04-28 2013-09-04 京东方科技集团股份有限公司 一种液晶显示装置
CN105467737A (zh) * 2015-12-29 2016-04-06 海信集团有限公司 一种激光光源装置和激光投影设备
CN205910484U (zh) * 2016-08-04 2017-01-25 青岛蓝之虹光电技术有限公司 应用波长转换原理的新型光源装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108957860A (zh) * 2018-08-22 2018-12-07 京东方科技集团股份有限公司 显示装置及其制备方法

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