Number | Date | Country | Kind |
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10-297402 | Oct 1998 | JP |
Number | Name | Date | Kind |
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6130872 | Sugiura et al. | Oct 2000 |
Number | Date | Country |
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10021577 | Jan 1998 | JP |
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National Technical Report vol. 43, No. 3, Jun. 1997, pp. 55-62. |
Hsi-Fu Shih et al., “Holographic Laser Module with Dual Wavelength for DVD Optical Heads”, International Symposium on Optical Memory 1998, Technical Digest pp. 22-23 (Oct. 1998). |