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Understanding CD/DVD/Blu-ray OPU Mechanics by Online Store is a document available to read on EtoBox.
What is Understanding CD/DVD/Blu-ray OPU Mechanics about?
The document discusses the capabilities and components of an optical pickup unit (OPU) typically found in CD/DVD/Blu-ray drives. An OPU uses a laser diode, lenses, and photodiodes to focus a laser onto and detect light reflected from a rotating disc. It can measure sub-angstrom vibrations and be used for applications beyond reading optical discs, such as biological imaging, Raman spectroscopy, and measuring nano/micro-scale vibrations of MEMS devices at frequencies up to 160 MHz. With some modifications, an
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