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| 基于合光技术的可变焦激光探照灯设计 |
| Design of zoomable laser searchlight based on photoluminescence technology |
| 投稿时间：2023-04-03 |
| DOI：10.3969/j.issn.1005-5630.202304030082 |
| 中文关键词: 激光束合光 双光路激光模组 玻璃反光碗 光通量 |
| 英文关键词:laser beam combination light dual-path laser module glass reflective bowl luminous flux |
| 基金项目: |
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| 摘要点击次数: 1747 |
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| 中文摘要: |
| 为增加激光光源的光效，进一步实现远距离照明，可使用基于合光技术的方案，设计一种可变焦激光探照灯。采用多颗蓝光 LD 排成阵列的方法，利用玻璃反光碗的光回收技术，对激光探照灯进行光路设计；同时使用二向色片来控制发散角度，从而实现激光探照灯的可变焦控制。测量激光模组在1 A电流下输出的光通量，经计算，荧光陶瓷片出射的总光通量约为730 lm。此外，对匀光片的散射特性进行改变，可实现对聚焦激光光斑的控制。此研究实现了可变焦激光探照灯的光路设计以及对聚焦激光光斑的控制，并利用二向色片实现了蓝光和黄光混合白光输出。该光学系统的整体光效较高，有较强的实用意义。 |
| 英文摘要: |
| To increase the light efficiency of laser light sources and further achieve long-distance illumination, a scheme based on combining light technology can be used to design a variable focus laser searchlight. Using the method of arranging multiple blue light LDs into an array and utilizing the light recovery technology of the glass reflector bowl, the optical path design of the laser searchlight was carried out. Simultaneously using a dichroic chip to control the divergence angle, variable focus control of the laser searchlight was achieved. Measure the luminous flux output by the laser module at a current of 1 A. After calculation, the total luminous flux emitted from the fluorescent ceramic chip was approximately 730 lm. In addition, changing the scattering characteristics of the uniform light sheet could achieve control of the focused laser spot. This study achieved the optical path design of a variable focus laser searchlight and the control of the focused laser spot, and used a dichroic chip to achieve mixed white light output of blue and yellow light. The overall optical efficiency of this optical system is high, and it has strong practical significance. |
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