CN111504349B - 一种激光照明装置 - Google Patents

一种激光照明装置 Download PDF

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CN111504349B
CN111504349B CN202010346196.5A CN202010346196A CN111504349B CN 111504349 B CN111504349 B CN 111504349B CN 202010346196 A CN202010346196 A CN 202010346196A CN 111504349 B CN111504349 B CN 111504349B
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刘晓亮
徐顺东
戴小燕
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Changzhou Kutong Intelligent Technology Co ltd
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Abstract

本发明公开了一种激光照明装置，包括激光器、梯度变折射率透镜、光纤、光纤插头、光纤法兰、主镜筒和光学组件，所述激光器的一侧安装有梯度变折射率透镜，所述梯度变折射率透镜的另一侧通过光纤与光纤插头连接，所述光纤插头插接入光纤法兰中，所述光纤法兰的另一端与光学组件连接，所述光学组件安装在主镜筒内，所述光学组件包括调焦镜筒，所述调焦镜筒的内部通过镜圈固定安装有凸透镜，所述调焦镜筒远离主镜筒的一端安装有锥形镜安装座；本发明能产生环形光斑，并且解决环形光斑的辐照分布不均匀，光输出功率很难提高的问题。

Description

一种激光照明装置
技术领域
本发明涉及照明装置技术领域，具体涉及一种激光照明装置。
背景技术
在视觉测量系统中，照明组件是重要的组成部件。在基于结构光的测量系统中，需要一个高质量的线状光源，其主要技术要求在于：较小的扩散角，通常不大于1mrad；较高的光强，被辐照面所接受的光辐照强度大于1mW/cm2。在圆截面几何测量应用中，还需要产生环形光斑的光源。现有的技术方案主要有以下几种：一种是使用多个线形光源做拼接处理，其优点是光学系统较为简单，容易使用输出功率较大的激光光源，其缺点是光斑拼接较为繁琐，依赖高精度的机械结构和光学系统，且环形光斑的辐照分布不均匀。另一种方案是使用锥形反射镜将准直的激光束沿正交于激光束轴线的方向扩散，其优点是机械结构简单，不需要进行拼接处理。缺点是光输出功率很难提高，这是因为：由于高功率边边缘发射激光器(EEL)出光面为长宽比较大的矩形，使用准直镜控制扩散角后，光束依然保持长宽比较大的矩形，通过锥形反射镜后环形光斑的辐照分布不均匀。若使用出光面为近似圆形的垂直腔面发射激光器(VCSEL)，则因为出光面几何尺寸较大，受光学系统数值孔径(N.A.)的限制，输出光束的扩散角无法缩小到符合要求的值。
发明内容
为了克服上述的技术问题，本发明的目的在于提供一种激光照明装置，本发明通过激光器产生单色光发射出去，梯度变折射率透镜将激光器的出射光扩散角减小，并将光束聚焦至小于光纤入口直径的尺寸，光纤将光能量进行传输，并保持较小的扩散角，传输到凸透镜，凸透镜将光纤输出端的光扩散角减小，并将光束修正为准直，调焦镜筒通过旋转可使凸透镜沿光轴方向移动，调整该透镜与光纤端口之间的距离，进而调整光纤输出端的光扩散角，光束到达锥形反射镜，锥形反射镜将光束向正交于光轴的平面扩散，形成环形光斑，本装置能产生环形光斑，并且解决环形光斑的辐照分布不均匀，光输出功率很难提高的问题。
本发明的目的可以通过以下技术方案实现：
一种激光照明装置，包括激光器、梯度变折射率透镜、光纤、光纤插头、光纤法兰、主镜筒和光学组件，所述激光器的一侧安装有梯度变折射率透镜，所述梯度变折射率透镜的另一侧通过光纤与光纤插头连接，所述光纤插头插接入光纤法兰中，所述光纤法兰的另一端与光学组件连接，所述光学组件安装在主镜筒内，所述光学组件包括调焦镜筒，所述调焦镜筒的内部通过镜圈固定安装有凸透镜，所述调焦镜筒远离主镜筒的一端安装有锥形镜安装座，所述锥形镜安装座中心处安装有光学玻璃管，所述光学玻璃管的另一侧安装有锥形反射镜。
作为本发明进一步的方案：激光器为边缘发射激光器或垂直腔面发射激光器。
作为本发明进一步的方案：所述凸透镜为球面平凸透镜或非球面准直凸透镜；所述球面平凸透镜或非球面准直凸透镜，用于将光纤输出端的光扩散角减小，并将光束修正为准直
作为本发明进一步的方案：所述锥形反射镜用于将光束向正交于光轴的平面扩散，形成环形光斑。
作为本发明进一步的方案：所述调焦镜筒用于承载球面平凸透镜或非球面准直凸透镜，通过旋转可使球面平凸透镜或非球面准直凸透镜沿光轴方向移动，调整该透镜与光纤端口之间的距离，进而调整光纤输出端的光扩散角。
作为本发明进一步的方案：所述梯度变折射率透镜用于将激光器的出射光扩散角减小，并将光束聚焦至小于光纤入口直径的尺寸。
本发明的有益效果：本发明通过激光器产生单色光发射出去，梯度变折射率透镜将激光器的出射光扩散角减小，并将光束聚焦至小于光纤入口直径的尺寸，光纤将光能量进行传输，并保持较小的扩散角，传输到凸透镜，凸透镜将光纤输出端的光扩散角减小，并将光束修正为准直，调焦镜筒通过旋转可使凸透镜沿光轴方向移动，调整该透镜与光纤端口之间的距离，进而调整光纤输出端的光扩散角，光束到达锥形反射镜，锥形反射镜将光束向正交于光轴的平面扩散，形成环形光斑，本装置能产生环形光斑，并且避免环形光斑的辐照分布不均匀，光输出功率很难提高的问题。
附图说明
下面结合附图对本发明作进一步的说明。
图1是本发明激光照明装置爆炸结构示意图。
图中：1、激光器；2、梯度变折射率透镜；3、光纤；4、光纤插头；5、光纤法兰；6、主镜筒；7、镜圈；8、凸透镜；9、调焦镜筒；10、锥形镜安装座；11、光学玻璃管；12、锥形反射镜。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1所示，一种激光照明装置，包括激光器1、梯度变折射率透镜2、光纤3、光纤插头4、光纤法兰5、主镜筒6和光学组件，所述激光器1的一侧安装有梯度变折射率透镜2，激光器1作为光源产生单色光，激光器1可为边缘发射激光器或垂直腔面发射激光器，梯度变折射率透镜2用于将激光器1的出射光扩散角减小，并将光束聚焦至小于光纤入口直径的尺寸，将光束直径缩小后输入光纤；梯度变折射率透镜2的参数需要根据激光器出射光的波长选择；所述梯度变折射率透镜2的另一侧通过光纤3与光纤插头4连接，光纤3用于传输光能量，并保持较小的光扩散角，光纤插头4用于将光纤3与光学组件做机械连接；所述光纤插头4插接入光纤法兰5中，所述光纤法兰5的另一端与光学组件连接，所述光学组件安装在主镜筒6内，所述光学组件包括调焦镜筒9，所述调焦镜筒9的内部通过镜圈7固定安装有凸透镜8，所述调焦镜筒9远离主镜筒6的一端安装有锥形镜安装座10，锥形镜安装座10用于承载锥形反射镜12及其附加组件，约束锥形反射镜与光束的几何关系；所述锥形镜安装座10中心处安装有光学玻璃管11，光学玻璃管11用于承载锥形反射镜12，并使得被锥形反射镜12转向后的光束通过，所述光学玻璃管11的另一侧安装有锥形反射镜12。
所述凸透镜8为球面平凸透镜或非球面准直凸透镜；所述球面平凸透镜或非球面准直凸透镜，用于将光纤输出端的光扩散角减小，并将光束修正为准直。
所述锥形反射镜12用于将光束向正交于光轴的平面扩散，形成环形光斑。
所述调焦镜筒9用于承载球面平凸透镜或非球面准直凸透镜，通过旋转可使球面平凸透镜或非球面准直凸透镜沿光轴方向移动，调整该透镜与光纤端口之间的距离，进而调整光纤输出端的光扩散角。
本发明的工作原理：激光器1产生单色光发射出去，梯度变折射率透镜2将激光器1的出射光扩散角减小，并将光束聚焦至小于光纤3入口直径的尺寸，光纤3将光能量进行传输，并保持较小的扩散角，传输到凸透镜8，凸透镜8将光纤输出端的光扩散角减小，并将光束修正为准直，调焦镜筒9通过旋转可使凸透镜8沿光轴方向移动，调整该透镜与光纤端口之间的距离，进而调整光纤输出端的光扩散角，光束到达锥形反射镜12，锥形反射镜12将光束向正交于光轴的平面扩散，形成环形光斑。
在本说明书的描述中，参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上内容仅仅是对本发明所作的举例和说明，所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离发明或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。

Claims (3)

1.一种激光照明装置，其特征在于，包括激光器（1）、梯度变折射率透镜（2）、光纤（3）、光纤插头（4）、光纤法兰（5）、主镜筒（6）和光学组件，所述激光器（1）的一侧安装有梯度变折射率透镜（2），所述梯度变折射率透镜（2）的另一侧通过光纤（3）与光纤插头（4）连接，所述光纤插头（4）插接入光纤法兰（5）中，所述光纤法兰（5）的另一端与光学组件连接，所述光学组件安装在主镜筒（6）内，所述光学组件包括调焦镜筒（9），所述调焦镜筒（9）的内部通过镜圈（7）固定安装有凸透镜（8），所述调焦镜筒（9）远离主镜筒（6）的一端安装有锥形镜安装座（10），所述锥形镜安装座（10）中心处安装有光学玻璃管（11），所述光学玻璃管（11）的另一侧安装有锥形反射镜（12），所述锥形反射镜（12）用于将光束向正交于光轴的平面扩散，形成环形光斑，所述凸透镜（8）为球面平凸透镜或非球面准直凸透镜，所述球面平凸透镜或非球面准直凸透镜，用于将光纤输出端的光扩散角减小，并将光束修正为准直，所述调焦镜筒（9）用于承载球面平凸透镜或非球面准直凸透镜，通过旋转可使球面平凸透镜或非球面准直凸透镜沿光轴方向移动，调整该透镜与光纤端口之间的距离，进而调整光纤输出端的光扩散角。
2.根据权利要求1所述的一种激光照明装置,其特征在于，激光器（1）为边缘发射激光器或垂直腔面发射激光器。
3.根据权利要求1所述的一种激光照明装置,其特征在于，所述梯度变折射率透镜（2）用于将激光器（1）的出射光扩散角减小，并将光束聚焦至小于光纤入口直径的尺寸。
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