head mainly includes generator (also known as diode), semi-reflective prism, objective lens, lens and photoelectric diode.
When head reads the data on disc, the light from generator goes through semi-reflecting prism and converges on the objective lens; lens will make into extremely tiny points on CD.
head is a the essential part of CD drive, and also is the most sophisticated part.It is mainly used for data reading, so take special care when cleaning drive inside.
When head reads the data on disc, the light from generator goes through semi-reflecting prism and converges on the objective lens; lens will make into extremely tiny points on CD.
Because of the reflection material on the disc, light will reflect back, through the objective lens, then illuminate on semi-reflecting prism.
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