Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2005-11-29
2005-11-29
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S050121, C372S092000, C372S101000, C257S099000, C257S101000, C438S022000, C438S025000, C438S026000
Reexamination Certificate
active
06970491
ABSTRACT:
A planar wafer-level packaging method is provided for a laser and a monitor photo detector. The laser and photo detector are affixed to a planar substrate. The planar substrate provides electrical connections to the components. A lens cap with a microlens is formed and affixed to the substrate with a seal. The lens cap forms a hermetically sealed cavity enclosing the laser and photo detector. The inside surface of the lens cap has a reflective coating with a central opening over the emitting aperture of the laser. The central opening has an anti-reflective coating. Light from the laser is directed and shaped by the lens cap to couple into an external light guide. Residual light from the edge of the laser reflects off the inside surface of the lens cap and is incident upon the photo detector. In an alternate method, the laser may be packaged using flip-chip assembly.
REFERENCES:
patent: 5912872 (1999-06-01), Feldman et al.
patent: 6243350 (2001-06-01), Knight et al.
patent: 6433411 (2002-08-01), Degani et al.
patent: 6456766 (2002-09-01), Shaw et al.
patent: 6669801 (2003-12-01), Yoshimura et al.
patent: 6670599 (2003-12-01), Wagner et al.
patent: 6741777 (2004-05-01), Jewell et al.
patent: 6868207 (2005-03-01), Wickman
patent: 2004/0101020 (2004-05-01), Bhandarkar
Flores Ruiz Delma R.
Harvey Minsun Oh
Photodigm Inc.
Tkacs Stephen R.
Yee Duke W.
LandOfFree
Planar and wafer level packaging of semiconductor lasers and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Planar and wafer level packaging of semiconductor lasers and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planar and wafer level packaging of semiconductor lasers and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3504994