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(一)全息照相复合激光管激光头采用全息照相复合激光管的激光头的故障率较其他型号(如索尼、三洋等)的要高,如:菲利浦VAM1201等型号光头。分析其原因除了因使用或维修调整不当或激光管的正常自然老化而引起不读盘或读盘困难外,还有因其激光头的特殊结构引起的冷机不工作或热机工作不正常等故障。全息照相复合激光管与普通激光二极管相比,它在激光二极管发射面的光路中增设了一个衍射光栅,
(A) Holographic Photocoam laser head Laser head with holographic composite laser tube failure rate than other models (such as Sony, Sanyo, etc.) to be higher, such as: Philips VAM1201 and other models bald. Analysis of its causes in addition to improper use or maintenance due to the normal or natural aging of the laser tube caused by reading or disk reading difficulties, but also due to the special structure of the laser head cold machine does not work or heat machine does not work properly and other failures . Compared with the ordinary laser diode, the hologram laser tube adds a diffraction grating in the light path of the emitting surface of the laser diode,