Coherent light generators – Miscellaneous
Reexamination Certificate
2006-01-03
2006-01-03
Wong, Don (Department: 2821)
Coherent light generators
Miscellaneous
C372S705000, C372S008000, C369S112040
Reexamination Certificate
active
06983005
ABSTRACT:
It is an object of the invention to provide a holographic laser and an optical pickup, with which it is possible to read from and write to a plurality of types of optical disks with different read wavelengths, and to achieve a more compact apparatus. The holographic laser includes for example a package, two semiconductor laser elements and a photodiode for reading out signals accommodated within the package, a holographic element positioned proximate to or in close contact with the top of a glass window, and a wavelength separating element positioned proximate to or in close contact with the top of the holographic element. The holographic laser is integrally formed as a single component.
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U.S. Appl. No. 09/907,880, filed Jul. 12, 2001, T. Ueyama et al.
Masui Katsushige
Tsuchida Kazuhiro
Conlin David G.
Edwards & Angell LLP
Jensen Steven M.
Sharp Kabushiki Kaisha
Vy Hung Tran
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