US4896217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state imaging device including a transparent conductor between an optical low-pass filter and an imaging sensor
Assignee: Hitachi Ltd
•
Filing: 1988-06-10
•
Granted: 1990-01-23
•
Expires: 2008-06-10
Abstract
Abstract A solid-state imaging device is provided which includes an optical low-pass filter, and a solid-state imaging element chip for receiving optical signals through the low-pass filter. In addition, a shielding member having an optical transmissivity and an electric conductivity is interposed between the low-pass filter and the solid-state imaging element chip to improve image quality.
Inventors
- 👤 Toshio Miyazawa
- 👤 Kouzou Yasuda
- 👤 Hiroichi Soukei
- 👤 Iwao Takemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:51
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/80; H10F39/804; H04; H04N; H04N23/00; H04N23/50; H04N23/54; H04N23/55; H04N25/00; H10F39/805; H10F39/8057
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
50 words
A solid-state imaging device comprising: an optical low-pass filter; and a solid-state imaging element chip for receiving optical signals through said low-pass filter, wherein the improvement comprises a shielding member having an optical transmissivity and an electric conductivity and interposed between said low-pass filter and said solid-state imaging element chip.
Claim 2
Dependent Claim
50 words
A solid-state imaging device comprising: an optical low-pass filter; and a solid-state imaging element chip for receiving optical signals through said low-pass filter, wherein the improvement comprises a shielding member having an optical transmissivity and an electric conductivity and interposed between said low-pass filter and said solid-state imaging element chip.
Claim 3
Dependent Claim
24 words
A solid-state imaging device according to claim 1, wherein said shielding member is sandwiched between said low-pass filter and said solid-state imaging element chip.
Claim 4
Dependent Claim
16 words
A solid-state imaging device according to claim 1, wherein said shielding member coats said low-pass filter.
Claim 5
Dependent Claim
30 words
A solid-state imaging device according to claim 1, wherein said shielding member is made of a transparent conductive material composed of a mixture of In 2 O 3 and ZnO.
Claim 6
Dependent Claim
17 words
A solid-state imaging device according to claim 1, wherein said low-pass filter is an optical quartz filter.
Claim 7
Dependent Claim
109 words
A solid-state imaging device comprising: a solid-state imaging chip; means for providing optical signals to said solid-state imaging chip along a predetermined optical signal path; an optical low-pass filter provided on said optical signal path for reducing a Moire effect in said solid-state imaging device; and means provided on said optical signal path for preventing the generation of electromagnetic waves between said solid-state imaging chip and said optical low-pass filter by preventing electrical signals generated in said solid-state imaging chip from impinging on said optical low-pass filter, wherein said means comprises a shielding member formed on said optical path between said solid-state imaging chip and said optical low-pass filter.
Claim 8
Dependent Claim
109 words
A solid-state imaging device comprising: a solid-state imaging chip; means for providing optical signals to said solid-state imaging chip along a predetermined optical signal path; an optical low-pass filter provided on said optical signal path for reducing a Moire effect in said solid-state imaging device; and means provided on said optical signal path for preventing the generation of electromagnetic waves between said solid-state imaging chip and said optical low-pass filter by preventing electrical signals generated in said solid-state imaging chip from impinging on said optical low-pass filter, wherein said means comprises a shielding member formed on said optical path between said solid-state imaging chip and said optical low-pass filter.
Claim 9
Dependent Claim
22 words
A solid-state imaging device according to claim 6, wherein said shielding member comprises a shielding layer formed on said optical low-pass filter.
Claim 10
Dependent Claim
18 words
A solid-state imaging device according to claim 6, further comprising an infrared filter formed on said optical path.
Claim 11
Dependent Claim
30 words
A solid-state imaging device according to claim 8, wherein said optical low-pass filter, said infrared filter and said shielding member are formed as a layered structure on said optical path.
Claim 12
Dependent Claim
46 words
A solid-state imaging device according to claim 9, wherein said optical path further includes a lens system for providing optical signals to said chip, wherein said optical low-pass filter, said infrared filter and said shielding member are formed between said lens system and said imaging chip.
Claim 13
Dependent Claim
25 words
A solid-state imaging device according to claim 6, wherein said shielding member prevents timing signals in said imaging chip from impinging on said low-pass filter.
Claim 14
Dependent Claim
32 words
A solid-state imaging device according to claim 6, wherein said shielding member is made of a transparent conductive material composed of a mixture of In 2 O 3 and ZnO 2 .
Claim 15
Dependent Claim
17 words
A solid-state imaging device according to claim 6, wherein said low-ass filter is an optical quartz filter.
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) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |