The invention provides an inexpensive and easily manufactured objective lens driving apparatus having a reinforcing rib for reinforcing a coil restraining part of a support printed board formed on a lens holder. The ends of a focusing coil and a tracking coil are wound around the support printed board and the reinforcing rib part in a bundle.

 
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< Aspherical lens with grating

< Dual mode mirror imaging system

> Pressure compensating device for optical apparatus

> Head-mounted display by integration of phase-conjugate material

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