US3840889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser diode package formed of ceramic and metal materials having high electrical and thermal conductivity
Assignee: RCA Corp
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Filing: 1973-07-11
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Granted: 1974-10-08
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Expires: 1993-07-11
Abstract
Abstract A laser diode package which has little inherent induction at high frequency, due to its size and geometry, and allows operation of the diode at reduced temperature without affecting the temperature of the optically coupled medium.
Inventors
- 👤 Brien J O
- 👤 P Nyul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:07
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/02; H01S5/022; H01S5/0225; H01S5/02251; G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4202; G02B6/4248; H01S5/024
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
A laser diode package comprising: a. a base plate of an electrically conductive metallic material; b. an insulator ring attached to said plate; c. a terminal ring of an electrically conductive metallic material mounted on said insulator ring; d. a mounting post, of an electrically conductive metallic material, on said base plate and extending through said insulator ring; e. a laser diode on said mounting post, said laser diode having a light emitting surface which faces away from said base plate, and adjacent regions of opposite conductivity forming a PN junction therebetween, one of said regions being electrically connected to said mounting post; f. means electrically connecting the other region of said laser diode to said terminal ring.
Claim 2
Dependent Claim
118 words
A laser diode package comprising: a. a base plate of an electrically conductive metallic material; b. an insulator ring attached to said plate; c. a terminal ring of an electrically conductive metallic material mounted on said insulator ring; d. a mounting post, of an electrically conductive metallic material, on said base plate and extending through said insulator ring; e. a laser diode on said mounting post, said laser diode having a light emitting surface which faces away from said base plate, and adjacent regions of opposite conductivity forming a PN junction therebetween, one of said regions being electrically connected to said mounting post; f. means electrically connecting the other region of said laser diode to said terminal ring.
Claim 3
Dependent Claim
29 words
The laser diode package in accordance with claim 1 in which the other region of said laser diode is electrically connected to said terminal rings by a metallic ribbon.
Claim 4
Dependent Claim
19 words
The laser diode package in accordance with claim 1 in which a tab extends radially from the terminal ring.
Claim 5
Dependent Claim
75 words
The laser diode package in accordance with claim 1 in which said mounting post extends beyond said terminal ring and has a groove in a surface thereof which extends longitudinally from the emitting surface of said diode to the free end surface of said mounting post and a fiber optic 15 secured in said groove and extends from adjacent the light emitting surface of the diode beyond the free end surface of the mounting post.
Claim 6
Dependent Claim
22 words
The laser diode package in accordance with claim 1 in which a relief block secures a fiber optic to said mounting post.
Claim 7
Dependent Claim
41 words
The laser diode package in accordance with claim 1 in which said mounting post extends only to said terminal ring and a cap is mounted on said terminal ring, said cap having a glass window which extends over the mounting post.
Claim 8
Dependent Claim
75 words
The laser diode package in accordance with claim 3 in which said cap is a flat glass plate mounted on said terminal ring and said glass plate having a metallic coating on the edge of its bottom surface and a center portion of a material with fiber optic properties, and said diode is mounted on said mounting post such that said light emitting surface is in contact with the center portion of said glass plate.
Claim 9
Dependent Claim
45 words
The laser diode package in accordance with claim 4 in which said center portion of the flat glass plate has a diameter less than the thickness of said glass plate and an index of refraction greater than the index of refraction of said glass plate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |