Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2000-11-16
2002-04-02
Crane, Sara (Department: 2811)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257S099000, C257S676000
Reexamination Certificate
active
06365922
ABSTRACT:
BACKGROUND OF THE INVENTION
(1) Field of the Invention
This invention relates to surface mount diode package, particularly to the focusing cup of an optoelectric diode.
(2) Brief Description of Related Art
FIG. 1
shows the component parts of a prior art surface mount optoelectric diode package. A plastic focusing cup
13
is used to focus the light emitted from an optoelectric diode (not shown) placed inside the focusing cup. The focusing cup has a flat bottom
132
for mounting the diode and is glued to two metallic plates
11
and
12
, separated by a gap
15
. The two metallic plates
11
,
12
are connected to two electrodes of the optoelectric diode and are mounted over a pedestal
14
with a flange
141
. There are two through holes
111
and
121
in the metallic plates
11
and
12
, respectively, for the glue of the focusing cup
13
to feed through in adhering the two metallic plates
11
,
12
to a plastic pedestal
14
. The pedestal
14
has two overhanging flanges
141
. The metallic plates
11
and
12
are then folded around the flanges
141
as shown in
FIG. 2
to form the contacts
112
and
122
of the surface mount package as shown in FIG.
2
.
The pedestal
14
makes the overall cup structure tall and occupies space. For miniaturization and cost reduction, it is desirable to reduce the height of the diode package.
SUMMARY OF THE INVENTION
An object of this invention is to miniaturize a surface mount optoelectric diode package. Another object of this invention is to reduce the cost of manufacturing such a diode.
These objects are achieved by mounting the focusing cup directly on the bottom metallic contact plates of the surface mount diode package without the use of the pedestal. The metallic contact plates and the focusing cup are held together by providing through holes in the metallic contact plates and channels at the bottom surface of the metallic contact plates for the plastic material of the focusing cup to flow down the through holes and spread along the channels.
REFERENCES:
patent: 5936264 (1999-08-01), Ishinaga
patent: 6069440 (2000-05-01), Shimizu et al.
patent: 6093940 (2000-07-01), Ishinaga et al.
patent: 6274890 (2001-08-01), Oshio et al.
patent: 6274924 (2001-08-01), Carey et al.
patent: 2000-252524 (2000-09-01), None
Crane Sara
H. C. Lin Patent Agent
Harvatek Corp.
LandOfFree
Focusing cup for surface mount optoelectronic diode package does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Focusing cup for surface mount optoelectronic diode package, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Focusing cup for surface mount optoelectronic diode package will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2875436