关于激光光学演示仪的改装黄石市第五中学赵家宝（４３５００６）激光光学演示仪是一种性能很好的光学实验仪器。在讲授光学课时，教师用它来演示光学原理，既方便又能取得预期的效果，确实是教师们的好帮手。但是，唯一不足的是仪器中的激光管，无论用与不用，寿命只有一... About the modification of the laser optical demonstrator Zhao Jiabao (435006), the fifth middle school in Huangshi, is an optical experimental instrument with good performance. When teaching optical courses, teachers use it to demonstrate the principles of optics. It is both convenient and able to achieve the desired results. It is indeed a good helper for teachers. However, the only downside is the laser tube in the instrument, whether it is used or not, the lifetime is only one...