US3842262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed photodiode mount
Assignee: United States Department of the Air Force
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Filing: 1973-11-12
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Granted: 1974-10-15
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Expires: 1993-11-12
Abstract
Abstract A small, easily constructed, high speed, coaxially connected, photodiode mount is constructed by modifying two conventional seven-millimeter coaxial connectors so as to position the diode in the end of one connector. The flanges of the connectors are positioned in back-to-back relationship with insulation between them to form a coupling capacitor. The photodiode bias potential is impressed on the photodiode by making electrical connections to the flanges. A coaxial cable signal lead is conventionally connected to the other flange. The mount is held in a light and electric field shielding tube by insulating screws through holes in the flanges.
Inventors
- 👤 J Heitman
- 👤 E Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
H; H01; H01R; H01R9/00; H01R9/03; H01R9/05; H01R9/0515; H10; H10F; H10F99/00; H10F77/00; H10F77/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
117 words
A mount for a photodiode comprising: a. a first flanged member having means for electrically connecting to a coaxial cable; b. a second flanged member having means for supporting said photodiode; c. an electrically conductive retaining member retaining the said photodiode and making electrical contact with the said photodiode and the said second flange member, and having an aperture for communicating light to said photodiode; d. an electrically insulating member positioned between the said first flanged member and the said second flanged member forming a capacitance coupling between the said first and said second flange members; e. means for attaching said flange members to a supporting surface; and f. means for applying a voltage across said photodiode.
Claim 2
Dependent Claim
117 words
A mount for a photodiode comprising: a. a first flanged member having means for electrically connecting to a coaxial cable; b. a second flanged member having means for supporting said photodiode; c. an electrically conductive retaining member retaining the said photodiode and making electrical contact with the said photodiode and the said second flange member, and having an aperture for communicating light to said photodiode; d. an electrically insulating member positioned between the said first flanged member and the said second flanged member forming a capacitance coupling between the said first and said second flange members; e. means for attaching said flange members to a supporting surface; and f. means for applying a voltage across said photodiode.
Claim 3
Dependent Claim
23 words
The structure as claimed in claim 1 wherein the said supporting surface provides a light and electric field shield around the said photodiode.
Claim 4
Dependent Claim
258 words
A small, high speed, mount for receiving a light beam on a photodiode having two electrical connections comprising: a. a first flanged member having an extended center conductor and means for electrically connecting to a coaxial cable; b. a second flanged member having a tubular insulator that is coaxial with the said extended center conductor of the said first flanged member and that supports the said photodiode; c. an electrically conductive retaining member cooperating with the said second flanged member retaining the said photodiode in the said insulating support and providing a first electrical connection of the said photodiode with the said extended center conductor of the said first flanged member and a second electrical connection of the said photodiode with the said second flanged member; d. an aperture positioned in the said retaining member providing light entry to the said photodiode; e. an electrically insulating member positioned between the flange of the said first flanged member and the flange of the said second flanged member providing a capacitance coupling between the said first flanged member and tHe said second flanged member; f. means cooperating with the said first and second flanged members for positioning the said photodiode in light receiving relationship with the said light beam; g. means cooperating with the said first flanged member and cooperating in insulating relationship with the said second flanged member for attaching the said flanged members to the said photodiode positioning means; and h. means for applying a voltage between the said first flanged member and the said second flanged member.
Claim 5
Dependent Claim
258 words
A small, high speed, mount for receiving a light beam on a photodiode having two electrical connections comprising: a. a first flanged member having an extended center conductor and means for electrically connecting to a coaxial cable; b. a second flanged member having a tubular insulator that is coaxial with the said extended center conductor of the said first flanged member and that supports the said photodiode; c. an electrically conductive retaining member cooperating with the said second flanged member retaining the said photodiode in the said insulating support and providing a first electrical connection of the said photodiode with the said extended center conductor of the said first flanged member and a second electrical connection of the said photodiode with the said second flanged member; d. an aperture positioned in the said retaining member providing light entry to the said photodiode; e. an electrically insulating member positioned between the flange of the said first flanged member and the flange of the said second flanged member providing a capacitance coupling between the said first flanged member and tHe said second flanged member; f. means cooperating with the said first and second flanged members for positioning the said photodiode in light receiving relationship with the said light beam; g. means cooperating with the said first flanged member and cooperating in insulating relationship with the said second flanged member for attaching the said flanged members to the said photodiode positioning means; and h. means for applying a voltage between the said first flanged member and the said second flanged member.
Claim 6
Dependent Claim
33 words
The apparatus as claimed in claim 3 wherein the positioning means cooperating with the said flanged members includes means for providing a light shield and an electric field shield around the said photodiode.
Claim 7
Dependent Claim
25 words
The apparatus as claimed in claim 4 wherein the said capacitance between the said flanged members provided by the insulating member is approximately 100 picofarad.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |