US4636631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconducting detector in optical immersion
Assignee: Societe Anonyme de Telecommunications SAT
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Filing: 1984-04-03
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Granted: 1987-01-13
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Expires: 2004-04-03
Abstract
Abstract The invention relates to a photoconducting detector in optical immersion, comprising a detector wafer in Hg1-xCdxTe, on a quartz substrate, and a hemispherical lens in CdTe, assembled on each other by a layer of photosensitive resin whose thickness is calibrated by two shims. The detector is advantageously used for the evaluation of targets.
Inventors
- 👤 Yves Carpentier
- 👤 Andre Gauthier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:30
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/10; H10F77/00; H10F77/40; H10F77/413
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
A photoconductive detector in optical immersion, sensitive to infrared radiation, comprising a lens, the front surface of which is convex and transparent to infrared radiation, a wafer of semi-conductor material of one of the two types of conductivity N and P on the rear side of the lens, contacts engaging the semi-conductor wafer and, between the lens and the wafer, a layer of a bonding agent for bonding the lens and the wafer, the bonding layer being a layer of a photosensitive resin that is transparent to infrared radiation and chemically inert.
Claim 2
Dependent Claim
92 words
A photoconductive detector in optical immersion, sensitive to infrared radiation, comprising a lens, the front surface of which is convex and transparent to infrared radiation, a wafer of semi-conductor material of one of the two types of conductivity N and P on the rear side of the lens, contacts engaging the semi-conductor wafer and, between the lens and the wafer, a layer of a bonding agent for bonding the lens and the wafer, the bonding layer being a layer of a photosensitive resin that is transparent to infrared radiation and chemically inert.
Claim 3
Dependent Claim
24 words
The detector of claim 1 wherein the photosensitive resin of the assembling layer is the resin marketed by Kodak under the trademark MICRORESIST 747.
References Cited (Backward Citations)
US2964636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |