Semiconductor device for optically coupling semiconductor light-emitting device to optical fiber
View Patent ↗A semiconductor device for optically coupling a semiconductor light-emitting device to an optical fiber, includes (a) a lens which focuses lights emitted from the semiconductor light-emitting device, onto the optical fiber, (b) a shell which supports the lens therewith, the shell being comprised of a cylindrical first portion, a second portion integral with the first portion at an upper end of the first portion and being formed centrally with an opening into which the lens is to be fit, and a cylindrical third portion extending from the first portion upwardly beyond the second portion, (c) glass arranged around the lens for keeping the lens and the opening hermetically sealed, and (d) a reinforcement formed on at least one of upper and lower surfaces of the second portion for preventing the shell from being deformed due to a stress acting on the shell.
1. A semiconductor device for optically coupling a semiconductor light-emitting device to an optical fiber, comprising:
(a) a lens which focuses lights emitted from said semiconductor light-emitting device, onto said optical fiber;
(b) a shell which supports said lens therewith, said shell being comprised of a cylindrical first portion, a second portion integral with said first portion at an upper end of said first portion and being formed centrally with an opening into which said lens is to be fit, and a cylindrical third portion extending from said first portion upwardly beyond said second portion;
(c) glass arranged around said lens for keeping said lens and said opening hermetically sealed; and
(d) reinforcements formed on upper and lower surfaces of said second portion for preventing said shell from being deformed due to a stress acting on said shell.
2. The semiconductor optically-coupling device as set forth in claim 1 , wherein said reinforcements have a shape for covering a stress acting on said second portion therewith when thermal stress acts on said shell.
3. The semiconductor optically-coupling device as set forth in claim 1 , wherein said reinforcements have a linearly tapered cross-section.
4. The semiconductor optically-coupling device as set forth in claim 1 , wherein said reinforcements have a step-shaped cross-section.
5. The semiconductor optically-coupling device as set forth in claim 1 , wherein said reinforcements have an inwardly-projecting arcuate cross-section.
6. A semiconductor device for optically coupling a semiconductor light-emitting device to an optical fiber, comprising:
(a) a lens which focuses lights emitted from said semiconductor light-emitting device, onto said optical fiber;
(b) a shell which supports said lens therewith, said shell being comprised of a cylindrical first portion, and a second portion integral with said first portion at an upper end of said first portion and being formed centrally with an opening into which said lens is to be fit;
(c) glass arranged around said lens for keeping said lens and said opening hermetically sealed; and
(d) reinforcements formed on a lower surface and an upper surface of said second portion for preventing said shell from being deformed due to a stress acting on said shell.
7. The semiconductor optically-coupling device as set forth in claim 6 , wherein said reinforcements have a shape for covering a stress acting on said second portion therewith when thermal stress acts on said shell.
8. The semiconductor optically-coupling device as set forth in claim 6 , wherein said reinforcements have a linearly tapered cross-section.
9. The semiconductor optically-coupling device as set forth in claim 6 , wherein said reinforcements have a step-shaped cross-section.
10. The semiconductor optically-coupling device as set forth in claim 6 , wherein said enforcements have an inwardly-projecting arcuate cross-section.
11. A shell for supporting a lens which focuses lights emitted from a semiconductor light-emitting device, onto an optical fiber,
said shell being comprised of a cylindrical first portion, a second portion integral with said first portion at an upper end of said first portion and being formed centrally with an opening into which said lens is to be fit, and a cylindrical third portion extending from said first portion upwardly beyond said second portion.
said shell including reinforcements formed on upper and lower surfaces of said second portion for preventing said shell from being deformed due to a stress acting on said shell.
12. The shell as set forth in claim 11 , wherein said reinforcements have a shape for covering a stress acting on said second portion therewith when thermal stress acts on said shell.
13. The shell as set forth in claim 11 , wherein said reinforcements have a linearly tapered cross-section.
14. The shell as set forth in claim 11 , wherein said reinforcements have a step-shaped cross-section.
15. The shell as set forth in claim 11 , wherein said reinforcements have an inwardly-projecting arcuate cross-section.
16. A shell for supporting a lens which focuses lights emitted from a semiconductor light-emitting device, onto an optical fiber,
said shell being comprised of a cylindrical first portion, and a second portion integral with said first portion at an upper end of said first portion and being formed centrally with an opening into which said lens is to be fit,
said shell including reinforcements formed on a lower surface and an upper surface of said second portion for preventing said shell from being deformed due to a stress acting on said shell.
17. The shell as set forth in claim 16 , wherein said reinforcements have a shape for covering a stress acting on said second portion therewith when thermal stress acts on said shell.
18. The shell as set forth in claim 16 , wherein said reinforcement have a linearly tapered cross-section.
19. The shell as set forth in claim 16 , wherein said reinforcements have a step-shaped cross-section.
20. The shell as set forth in claim 16 , wherein said reinforcements have an inwardly-projecting arcuate cross-section.
21. A semiconductor laser module including a semiconductor device for optically coupling a semiconductor light-emitting device to an optical fiber,
said semiconductor device comprising:
(a) a lens which focuses lights emitted from a semiconductor light-emitting device, onto an optical fiber;
(b) a shell which supports said lens therewith, said shell being comprised of a cylindrical first portion, a second portion integral with said first portion at an upper end of said first portion and being formed centrally with an opening into which said lens is to be fit, and a cylindrical third portion extending front said first portion upwardly beyond said second portion;
(c) glass arranged around said lens for keeping said lens and said opening hermetically sealed; and
(d) reinforcements formed on upper and lower surfaces of said second portion for preventing said shell from being deformed due to a stress acting on said shell.
22. A semiconductor laser module including a semiconductor device for optically coupling a semiconductor light-emitting device to an optical fiber,
said semiconductor device comprising:
(a) a lens which focuses lights emitted from a semiconductor light-emitting device, onto an optical fiber;
(b) a shell which supports said lens therewith, said shell being comprised of a cylindrical first portion, and a second portion integral with said first portion at an upper end of said first portion and being formed centrally with an opening into which said lens is to be fit;
(c) glass arranged around said lens for keeping said lens and said opening hermetically sealed; and
(d) reinforcements formed on a lower surface and an upper surface of said second portion for preventing said shell from being deformed due to a stress acting on said shell.