Patent US5027216A successfully refreshed from Google Patents.
US5027216A
Expired / Lapsed
US
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Image pickup apparatus
Assignee: Victor Company of Japan Ltd
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Filing: 1990-06-15
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Granted: 1991-06-25
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Expires: 2010-06-15
Abstract
Abstract An image pickup apparatus comprising: a charge storage member being movable; a photo-charge conversion unit comprising a photoconductive layer member having a transparent electrode, an electrode, and means for applying an electric field between said transparent electrode and said electrode, said photo-charge conversion unit opposing said charge storage member; and means for focussing an optical image of an object through said transparent electrode onto an image focussing surface of said photo-charge conversion unit via a taking lens, and for forming an electric charge image corresponding to said optical image of the object on said charge storage member. The image pickup apparatus may further comprise reading means for reading said electric charge image corresponding to said optical image and generating an electrical signal according to said electric charge image by opposing said charge storage member.
Inventors
- 👤 Itsuo Takanashi
- 👤 Shintaro Nakagaki
- 👤 Hirohiko Shinonaga
- 👤 Tsutou Asakura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:23
CPC Classifications
G; G11; G11B; G11B11/00; G11B11/08; G11B9/00; G11B9/08; H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N5/00; H04N5/30; Y; Y10; Y10S; Y10S358/00; Y10S358/906
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
158 words
A recording/reproducing apparatus comprising a recording medium having a laminated structure laminated in an order of a first transparent electrode, photoconductive layer, dielectric mirror layer, photo modulation layer and a second transparent electrode layer; laser beam projection means for projecting a laser beam being optically modulated with an information signal to be recorded on said recording medium, toward said dielectric mirror layer penetrating through the transparent electrode and the photoconductive layer causing thereof a change of resistance upon projection; a voltage being applied across said electrode and said transparent electrode to generate an electric field therebetween, and said dielectric mirror layer forming and holding an electric charge pattern in correspondence with said information signal in response to said change of resistance upon projection of the optically modulated laser beam; and means for reading said electric charge pattern formed on said dielectric mirror layer of said recording medium through said photo modulation layer and said second transparent electrode layer.
Claim 2
Dependent Claim
158 words
A recording/reproducing apparatus comprising a recording medium having a laminated structure laminated in an order of a first transparent electrode, photoconductive layer, dielectric mirror layer, photo modulation layer and a second transparent electrode layer; laser beam projection means for projecting a laser beam being optically modulated with an information signal to be recorded on said recording medium, toward said dielectric mirror layer penetrating through the transparent electrode and the photoconductive layer causing thereof a change of resistance upon projection; a voltage being applied across said electrode and said transparent electrode to generate an electric field therebetween, and said dielectric mirror layer forming and holding an electric charge pattern in correspondence with said information signal in response to said change of resistance upon projection of the optically modulated laser beam; and means for reading said electric charge pattern formed on said dielectric mirror layer of said recording medium through said photo modulation layer and said second transparent electrode layer.
Claim 3
Dependent Claim
17 words
A recording/reproducing apparatus according to claim 1, wherein said recording medium is formed in a disk shape.
Claim 4
Dependent Claim
101 words
An image pickup apparatus comprising: means for focussing an optical image of an object via a taking lens onto a photo-photo conversion element which is constructed of at least a photoconductive layer and a dielectric mirror layer both interposed between two transparent electrodes; means for reading optical image information formed on said dielectric mirror layer correspondingly by to said optical image of the object by using a mono-wavelength light; and a photo-charge conversion element constructed of at least a photoconductive layer and a charge storage layer for recording said optical image of the object read out from said photo-photo conversion element.
Claim 5
Dependent Claim
101 words
An image pickup apparatus comprising: means for focussing an optical image of an object via a taking lens onto a photo-photo conversion element which is constructed of at least a photoconductive layer and a dielectric mirror layer both interposed between two transparent electrodes; means for reading optical image information formed on said dielectric mirror layer correspondingly by to said optical image of the object by using a mono-wavelength light; and a photo-charge conversion element constructed of at least a photoconductive layer and a charge storage layer for recording said optical image of the object read out from said photo-photo conversion element.
Claim 6
Dependent Claim
139 words
An image pickup apparatus comprising: means for focussing an optical image of an object via a taking lens onto a photo-photo conversion element which is constructed of at least a photoconductive layer and a dielectric mirror layer both interposed between two transparent electrodes; a photo-charge conversion element constructed of at least a photoconductive layer and a charge storage layer; means for reading optical image information formed on said dielectric mirror layer correspondingly to said optical image of the object by using a mono-wavelength light and projecting a read out optical image onto said photo-charge conversion element; means for projecting said mono-wavelength light to said photo-photo conversion element and a reference light for forming a hologram of said optical image read out and projected to said photo-charge conversion element; and means for recording said hologram on said photo-charge conversion element.
Claim 7
Dependent Claim
139 words
An image pickup apparatus comprising: means for focussing an optical image of an object via a taking lens onto a photo-photo conversion element which is constructed of at least a photoconductive layer and a dielectric mirror layer both interposed between two transparent electrodes; a photo-charge conversion element constructed of at least a photoconductive layer and a charge storage layer; means for reading optical image information formed on said dielectric mirror layer correspondingly to said optical image of the object by using a mono-wavelength light and projecting a read out optical image onto said photo-charge conversion element; means for projecting said mono-wavelength light to said photo-photo conversion element and a reference light for forming a hologram of said optical image read out and projected to said photo-charge conversion element; and means for recording said hologram on said photo-charge conversion element.
Claim 8
Dependent Claim
143 words
A display apparatus comprising: a recording medium for storing an object information in the form of electric charge image; a charge image reading head comprising a transparent electrode, a dielectric layer and a photo-modulation interposed therebetween, said dielectric mirror opposing said recording medium, and said photo-modulation layer being made of a material which causes a light beam projected thereto through said transparent electrode and reflected by said dielectric mirror layer and outputted from said transparent electrode, being optically modulated due to a characteristic change caused by an electric field effected from said electric charge image stored in said recording medium; means for projecting said light beam to said charge image reading head thereby reading out said electric charge image as an optically modulated light beam; and means for projecting the optically modulated light beam on a screen as an intensity modulated light beam.
Claim 9
Dependent Claim
143 words
A display apparatus comprising: a recording medium for storing an object information in the form of electric charge image; a charge image reading head comprising a transparent electrode, a dielectric layer and a photo-modulation interposed therebetween, said dielectric mirror opposing said recording medium, and said photo-modulation layer being made of a material which causes a light beam projected thereto through said transparent electrode and reflected by said dielectric mirror layer and outputted from said transparent electrode, being optically modulated due to a characteristic change caused by an electric field effected from said electric charge image stored in said recording medium; means for projecting said light beam to said charge image reading head thereby reading out said electric charge image as an optically modulated light beam; and means for projecting the optically modulated light beam on a screen as an intensity modulated light beam.
References Cited (Backward Citations)
US3255308A
Cited
US3352967A
Cited
US3577200A
Cited
US3716747A
Cited
US3723651A
Cited
US3865975A
Cited
US4015285A
Cited
US4641193A
Cited
US4727427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |