Patent EP0826997A2 successfully refreshed from Google Patents.
EP0826997A2
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EP
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Optoelectronic module and method of manufacturing the same
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1997-08-22
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Granted: —
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Expires: 2017-08-22
Abstract
Abstract A light-emitting element is mounted on a first conversion element mounting portion prepared on a lead frame and resin-molded by using a mold. In this case, a focusing lens whose optical axis coincides with the major surface of the light-emitting element and a coupling portion in which a sleeve is fitted are integrally molded at once to mold a transmission section and an electronic circuit section. When these member are fixed in housings, and a ferrule holding an optical fiber is inserted in the sleeve fitted in a recess portion of the coupling portion, the optical fiber is optically coupled to the major surface of the light-emitting element. At this time, when the distal end portion of the sleeve is brought into contact with the abutment portion in the coupling portion, the end face of the optical fiber always coincides with the major surface of the light-emitting element, thereby realizing reliable optical axis alignment.
Inventors
- 👤 Toshio c/o Sumitomo Elec. Ind. Ltd. Mizue
- 👤 Daisuke c/o Sumitomo Elec. Ind. Ltd. Takagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 07:18
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4292; G02B6/4201; G02B6/4246
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
137 words
An optical data link for connecting an optical
fiber transmission path to an electrical signal
transmission path, comprising: a conversion element for converting one of an
optical signal transmitted through said optical fiber
and an electric signal transmitted through said
electrical signal transmission path into the other
signal; a lead frame having a conversion element mounting
portion on which said conversion element is mounted,
and lead pins electrically connected to one end of said
conversion element; a coupling portion for optically coupling said
optical fiber to said conversion element; and a focusing portion whose optical axis extends in
the direction of the normal to a major surface of said
conversion element, wherein said coupling portion and said focusing
portion are molded integrally with said conversion
element mounting portion with a first resin for sealing
said conversion element.
Claim 2
Dependent Claim
65 words
A link according to claim 1, wherein said lead
frame further comprises an electronic element mounting
portion on which electronic elements constituting an
electronic circuit are mounted, and external lead pins
for external connection, and said electronic elements are sealed with a second
resin which is molded on said electronic element
mounting portion separately from said first resin
molded on said conversion element mounting portion.
Claim 3
Dependent Claim
47 words
A link according to claim 2, wherein said lead
frame further comprises a peak or valley portion formed
by bending a portion exposed between said first resin
and said second resin in the form of a hook with
respect to a major surface of said second resin.
Claim 4
Dependent Claim
28 words
A link according to claim 3, wherein an angle
of the hook-like bent portion of said lead frame on the
second resin side is not less than 90°.
Claim 5
Dependent Claim
76 words
A link according to claim 1, wherein said
coupling portion comprises a sleeve for holding said
optical fiber, and an abutment portion conforming to
part of a shape of a virtual spherical surface centered
on a central portion of a light-receiving surface, of
one of said optical fiber and said conversion element
optically coupled to each other, which is located on a
light-receiving side, and coming into contact with a
distal end portion of said sleeve.
Claim 6
Dependent Claim
88 words
A link according to claim 1, wherein said
coupling portion comprises a sleeve having an end
portion conforming to part of a shape of a virtual
spherical surface centered on a central portion of a
light-receiving surface, of one of said optical fiber
and said conversion element optically coupled to each
other, which is located on a light-receiving side, and
holding said optical fiber, and an abutment portion
located at a predetermined distance from the major
surface of said conversion element and coming into
contact with said sleeve.
Claim 7
Dependent Claim
217 words
An optical data link for connecting an optical
fiber transmission path to an electrical signal
transmission path, comprising: a first conversion element for converting an
optical signal transmitted through a first optical
fiber into an electrical signal; a second conversion element for converting an
electrical signal transmitted through said electrical
signal transmission path into an optical signal and
sending the optical signal to a second optical fiber; a lead frame having conversion element mounting
portions on which said first and second conversion
elements are mounted, and lead pins electrically
connected to one end of said first conversion element
and one end of said second conversion element; a first coupling portion for optically coupling
said first optical fiber to said first conversion
element; a first focusing portion whose optical axis
extends in the direction of the normal to a major
surface of said first conversion element; a second coupling portion for optically coupling
said second optical fiber to said second conversion
element; and a second focusing portion whose optical axis
coincides with a major surface of said second
conversion element, wherein said first and second coupling portions
and said first and second focusing portions are
integrally molded on said conversion element mounting
portions with a first resin which is used to seal said
first and second conversion elements.
Claim 8
Dependent Claim
65 words
A link according to claim 7, wherein said lead
frame further comprises an electronic element mounting
portion on which electronic elements constituting an
electronic circuit are mounted, and external lead pins
for external connection, and said electronic elements are sealed with a second
resin which is molded on said electronic element
mounting portion separately from said first resin
molded on said conversion element mounting portion.
Claim 9
Dependent Claim
47 words
A link according to claim 7, wherein said lead
frame further comprises a peak or valley portion formed
by bending a portion exposed between said first resin
and said second resin in the form of a hook with
respect to a major surface of said second resin.
Claim 10
Dependent Claim
28 words
A link according to claim 9, wherein an angle
of the hook-like bent portion of said lead frame on the
second resin side is not less than 90°.
Claim 11
Dependent Claim
78 words
A link according to claim 7, wherein said
coupling portion comprises a sleeve for holding said
optical fiber, and an abutment portion conforming to
part of a shape of a virtual spherical surface centered
on a central portion of a light-receiving surface, of
one of said optical fiber and said conversion element
which are optically coupled to each other, which is
located on a light-receiving side, and coming into
contact with a distal end portion of said sleeve.
Claim 12
Dependent Claim
88 words
A link according to claim 7, wherein said
coupling portion comprises a sleeve having an end
portion conforming to part of a shape of a virtual
spherical surface centered on a central portion of a
light-receiving surface, of one of said optical fiber
and said conversion element optically coupled to each
other, which is located on a light-receiving side, and
holding said optical fiber, and an abutment portion
located at a predetermined distance from the major
surface of said conversion element and coming into
contact with said sleeve.
Claim 13
Independent Claim
122 words
A method of manufacturing an optical data link
for connecting an optical fiber to an electrical signal
line, comprising: the step of mounting a conversion element on a
conversion element mounting portion prepared on a
predetermined portion of a lead frame, said conversion
element being adapted to convert one of an optical
signal and an electrical signal into the other signal
and outputting the signal; and the step of sealing said conversion element with a
first resin, and integrally molding a coupling portion
for optically coupling said optical fiber to said
photoelectric conversion element and a focusing portion
whose optical axis extends in the direction of the
normal to a major surface of said conversion element on
the conversion element mounting portion.
Claim 14
Dependent Claim
62 words
A method according to claim 13, further
comprising: the step of mounting an electronic element on an
electronic element mounting portion prepared on a
predetermined portion of said lead frame which is
exposed from said first resin; and the step of sealing said electronic element with a
second resin, and integrally molding said conversion
element mounting portion independently of said first
resin.
Claim 15
Dependent Claim
40 words
A method according to claim 14, further
comprising the step of forming a peak or valley portion
by bending a portion of said lead frame which is
exposed between said first and second resins in the
form of a hook.
Claim 16
Dependent Claim
28 words
A method according to claim 15, wherein an
angle of the hook-like bent portion of said lead frame
on the second resin side is not less than 90°.
Claim 17
Dependent Claim
33 words
A method according to claim 14, wherein
molding of said first resin into said conversion
element mounting portion and molding of said second
resin into said electronic element mounting portion are
simultaneously performed.
References Cited (Backward Citations)
No citation records indexed.
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