CN113024253A - 用于激光照明的高显色性包边复合结构波长转换陶瓷及其制备方法 - Google Patents
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Abstract
本发明公开用于激光照明的高显色性包边复合结构波长转换陶瓷及其制备方法,包含有,黄光中心部,其采用黄光波长转换陶瓷材料;以及,红光包边部,其布置于所述黄光中心部的外周以及底部,所述红光包边部采用红光波长转换陶瓷材料。本发明的有益效果在于:蓝光LD发出的蓝光激光进入黄光中心部后有部分光未能与发光离子接触传至红光包边部并且从红光包边部出射出来红光,与黄光中心部激发后产生的黄光以及陶瓷表面反射的蓝光混合,提高荧光陶瓷的显色性。
Description
技术领域
本发明涉及激光照明用荧光材料,特别地是,用于激光照明的高显色性包边复合结构波长转换陶瓷及其制备方法。
背景技术
随着蓝光LD的技术日趋成熟,激光照明的概念也随之提出。激光照明主要采用反射式与透射式两种模式,但目前激光照明所用荧光材料缺少红光成分,其主要是激光照射到荧光材料后激发出黄光,激发的黄光和经过陶瓷内部反射出的蓝光复合成白光,复配出的光呈现中间白(甚至偏蓝)缺红光的现象。
发明内容
本发明目的是解决现有技术中荧光陶瓷复配出的光呈现中间白(甚至偏蓝)缺红光的现象,而一种用于激光照明的高显色性包边复合结构波长转换陶瓷及其制备方法,能有效提高激光照明的显色性。
为了实现上述目的,本发明的技术方案是这样实现的:用于激光照明的高显色性包边复合结构波长转换陶瓷,包含有,
黄光中心部,其采用黄光波长转换陶瓷材料;以及,
红光包边部,其布置于所述黄光中心部的外周以及底部,所述红光包边部采用红光波长转换陶瓷材料。
作为用于激光照明的高显色性包边复合结构波长转换陶瓷的优选方案,所述黄光波长转换陶瓷材料为Ce3+掺杂的YAG(Y3Al5O12)、GYGAG((Gd,Y)3(Al,Ga)5O12)、GYAG((Gd,Y)3Al5O12)、TYAG((Tb,Y)3Al5O12)、GLuAG((Gd,Lu)3Al5O12)中的一种或多种的组合。
作为用于激光照明的高显色性包边复合结构波长转换陶瓷的优选方案,所述红光波长转换陶瓷材料为CaAlSiN3:Eu、Y2O3:Eu中一种或多种。
作为用于激光照明的高显色性包边复合结构波长转换陶瓷的优选方案,所述波长转换陶瓷的整体厚度为0.1-1mm,总半径小于或等于10mm,其中,所述黄光中心部的厚度0.05-0.5mm,半径小于或等于5mm。
作为用于激光照明的高显色性包边复合结构波长转换陶瓷的优选方案,所述波长转换陶瓷的发光色温在2000-8000K,显色指数大于等于70。
本发明还提供用于激光照明的高显色性包边复合结构波长转换陶瓷的制备方法,包含有以下步骤,
步骤S1,制备陶瓷素坯:步骤S11,制备所述黄光中心部;步骤S12,制备所述红光包边部;步骤S13,组合所述黄光中心部与所述红光包边部;
步骤S2,烧结陶瓷素坯:以及,
步骤S3,加工后处理所述陶瓷素坯,得到权利要求1至5中任意一项所述波长转换陶瓷。
作为用于激光照明的高显色性包边复合结构波长转换陶瓷的制备方法的优选方案,步骤S11中,包含有,
步骤S111,配出混合粉体,发光离子铈离子的掺杂浓度在0.05%到5%;
步骤S112,球磨:球磨8-20小时,球磨转速120-400r/min,球磨介质为氧化铝磨球,氧化铝磨球直径为1-5mm,无水乙醇作为溶剂;
步骤S113,烘干浆料,过筛;以及,
步骤S114,煅烧:烧结温度为500-1000℃,保温1-24小时。
作为用于激光照明的高显色性包边复合结构波长转换陶瓷的制备方法的优选方案,步骤S2中,包含有,
步骤S21,素烧,去除有机物:烧结温度为600-1000℃,保温1-24小时;
步骤S22,真空烧结;烧结温度为1300-1850℃,保温时间5-24小时;以及,
步骤S23,退火:退火温度为1000-1550℃,保温时间10-30小时。
作为用于激光照明的高显色性包边复合结构波长转换陶瓷的制备方法的优选方案,步骤S3中,包含有,
步骤S31,双面抛光所述陶瓷素坯,整体厚度为0.1-1mm,总半径小于或等于10mm;以及,
步骤S32,所述陶瓷素坯的下表面镀全反膜,所述陶瓷素坯的上表面镀增透膜。
与现有技术相比,本发明的有益效果至少在于:蓝光LD发出的蓝光激光进入所述黄光中心部后,有部分光未能与发光离子接触而传至所述红光包边部并且从所述红光包边部出射出红光,该红光与所述黄光中心部激发后产生的黄光以及反射的蓝光混合,形成高显色性白光。
附图说明
图1为本发明的结构剖面示意图。图中序号:101.黄光中心部,102.红光包边部。
图2为本发明的原理图。图中序号:101.黄光中心部,102.红光包边部,203.蓝光激光器,204.蓝光激光,205.黄光,206.陶瓷内部蓝光,207.红光,208.陶瓷表面反射蓝光。
具体实施方式
下面通过具体的实施方式结合附图对本发明作进一步详细说明。
请参见图1和2,图中示出的是用于激光照明的高显色性包边复合结构波长转换陶瓷,包含有,黄光中心部101,其为发黄光陶瓷;以及,红光包边部102,其为红光波长转换陶瓷。蓝光LD发出的蓝光激光204进入黄光中心部后有部分光未能与发光离子接触传至红光包边部,激发红光包边部,出射红光,与黄光以及陶瓷表面反射的蓝光混合成高显色的白光。
实施例1:
本实施例中,中心圆材料基底选用YAG发光离子的掺杂浓度为0.2%,包边及底部材料选用Y2O3:Eu,按照规定的配比进行精确计算配料,将配好的粉体至于球磨罐中球磨10小时,球磨转速300r/min,球磨介质为氧化铝磨球,氧化铝磨球直径为3mm,无水乙醇作为溶剂。球磨后将球磨好的浆料烘干,然后过100目筛,得到混合物粉体,然后置于高纯氧化铝坩埚中放入高温马弗炉进行煅烧,烧结温度为800℃,保温6小时。然后称取一定量Ce:YAG粉体置于特制的模具中成型对模具双向加压,成型后内圆半径1mm。再压制周边Y2O3:Eu圆弧及底边,圆弧宽0.5mm,在组装到一起后真空塑封。将封好的素坯放入冷等静压机中进行冷等静压,其中压强为230MPa,保压时间为5分钟。制备出素坯。将冷等好的素坯放入低温马弗炉内进行素烧,去除样品内的有机物,烧结温度为800℃保温10小时,然后将素烧后的样品进行真空烧结,烧结温度为1800℃,保温时间5小时。最后对样品进行退火,退火温度为1400℃,保温时间20小时。对样品进行表面处理,样品双面抛光,样品厚度为0.3mm。对样品底面镀全反膜,对样品上表面镀增透膜,最终制备出所需样品。将制备好的样品,通过蓝光LD激发,测试发现其色温为4500K,显色指数为78。
实施例2:
本实施例中,中心圆材料基底选用GYAG发光离子的掺杂浓度为0.4%,包边及底部材料选用Y2O3:Eu,按照规定的配比进行精确计算配料,将配好的粉体至于球磨罐中球磨15小时,球磨转速250r/min,球磨介质为氧化铝磨球,氧化铝磨球直径为3mm,无水乙醇作为溶剂。球磨后将球磨好的浆料烘干,然后过100目筛,得到混合物粉体,然后置于高纯氧化铝坩埚中放入高温马弗炉进行煅烧,烧结温度为800℃,保温6小时。然后称取一定量Ce:GYAG粉体置于特制的模具中成型对模具双向加压,成型后内圆半径1.5mm。再压制周边Y2O3:Eu圆弧及底边,圆弧宽0.3mm,在组装到一起后真空塑封。将封好的素坯放入冷等静压机中进行冷等静压,其中压强为230MPa,保压时间为5分钟。制备出素坯。将冷等好的素坯放入低温马弗炉内进行素烧,去除样品内的有机物,烧结温度为800℃保温10小时,然后将素烧后的样品进行真空烧结,烧结温度为1780℃,保温时间8小时。最后对样品进行退火,退火温度为1400℃,保温时间20小时。对样品进行表面处理,样品双面抛光,样品厚度为0.3mm。对样品底面镀全反膜,对样品上表面镀增透膜,最终制备出所需样品。将制备好的样品,通过蓝光LD激发,测试发现其色温为4200K,显色指数为76。
以上仅表达了本发明的实施方式,其描述较为具体和详细,但且不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (9)
1.用于激光照明的高显色性包边复合结构波长转换陶瓷,其特征在于,包含有,
黄光中心部,其采用黄光波长转换陶瓷材料;以及,
红光包边部,其布置于所述黄光中心部的外周以及底部,所述红光包边部采用红光波长转换陶瓷材料。
2.根据权利要求1所述的用于激光照明的高显色性包边复合结构波长转换陶瓷,其特征在于,所述黄光波长转换陶瓷材料为Ce3+掺杂的YAG(Y3Al5O12)、GYGAG((Gd,Y)3(Al,Ga)5O12)、GYAG((Gd,Y)3Al5O12)、TYAG((Tb,Y)3Al5O12)、GLuAG((Gd,Lu)3Al5O12)中的一种或多种的组合。
3.根据权利要求1或2所述的用于激光照明的高显色性包边复合结构波长转换陶瓷,其特征在于,所述红光波长转换陶瓷材料为CaAlSiN3:Eu、Y2O3:Eu中一种或多种。
4.根据权利要求1所述的用于激光照明的高显色性包边复合结构波长转换陶瓷,其特征在于,所述波长转换陶瓷的整体厚度为0.1-1mm,总半径小于或等于10mm,其中,所述黄光中心部的厚度0.05-0.5mm,半径小于或等于5mm。
5.根据权利要求1所述的用于激光照明的高显色性包边复合结构波长转换陶瓷,其特征在于,所述波长转换陶瓷的发光色温在2000-8000K,显色指数大于等于70。
6.用于激光照明的高显色性包边复合结构波长转换陶瓷的制备方法,其特征在于,包含有以下步骤,
步骤S1,制备陶瓷素坯:步骤S11,制备所述黄光中心部;步骤S12,制备所述红光包边部;步骤S13,组合所述黄光中心部与所述红光包边部;
步骤S2,烧结陶瓷素坯:以及,
步骤S3,加工后处理所述陶瓷素坯,得到权利要求1至5中任意一项所述波长转换陶瓷。
7.根据权利要求6所述的用于激光照明的高显色性包边复合结构波长转换陶瓷的制备方法,其特征在于,步骤S11中,包含有,
步骤S111,配出混合粉体,发光离子铈离子的掺杂浓度在0.05%到5%;
步骤S112,球磨:球磨8-20小时,球磨转速120-400r/min,球磨介质为氧化铝磨球,氧化铝磨球直径为1-5mm,无水乙醇作为溶剂;
步骤S113,烘干浆料,过筛;以及,
步骤S114,煅烧:烧结温度为500-1000℃,保温1-24小时。
8.根据权利要求6所述的用于激光照明的高显色性包边复合结构波长转换陶瓷的制备方法,其特征在于,步骤S2中,包含有,
步骤S21,素烧,去除有机物:烧结温度为600-1000℃,保温1-24小时;
步骤S22,真空烧结;烧结温度为1300-1850℃,保温时间5-24小时;以及,
步骤S23,退火:退火温度为1000-1550℃,保温时间10-30小时。
9.根据权利要求6所述的用于激光照明的高显色性包边复合结构波长转换陶瓷的制备方法,其特征在于,步骤S3中,包含有,
步骤S31,双面抛光所述陶瓷素坯,整体厚度为0.1-1mm,总半径小于或等于10mm;以及,
步骤S32,所述陶瓷素坯的下表面镀全反膜,所述陶瓷素坯的上表面镀增透膜。
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