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DVD/CD/CD-R compatible pick-up with two-wavelength two-beam laser

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5 Author(s)
Yamada, M. ; Hypermedia Res. Center, Sanyo Electr. Co. Ltd., Gifu, Japan ; Kajiyama, S. ; Kanou, Y. ; Matsumura, Y.
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The CD-ROM and CD-R (recordable CD) playback compatibility is in great demand for DVD-ROM disc drive devices. The authors developed a new optical mechanism that utilizes a holographic optical element with wavelength selectivity, and two-wavelength two-beam laser in order to produce a DVD/CD/CD-R playback compatible pick-up with one objective lens

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Consumer Electronics, IEEE Transactions on  (Volume:44 ,  Issue: 3 )