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To deteriorate if the optics blu-ray player if it for a long time not to use?

Optics most likely long storage is not spoiled. However, the unit itself is under a duty not to use may lose efficiency. Like most electronic devices, and in proigrivateli drives are electrolytic capacitors, which can not long be de-energized as, in the course of the year, such equipment must include at least a couple of times, for about two hours, it will prolong their life. About the storage of movies on discs, they are not very durable though. For several incapable to read had to be thrown away. The film library held on USB hard drives for 2 terabytes, because there are a lot of TV series in addition to films. Not take up much space, are read directly LG-TVs.
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