US3603723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television camera
Assignee: US Philips Corp
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Filing: 1968-05-29
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Granted: 1971-09-07
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Expires: 1988-05-29
Abstract
Abstract concentrating color television camera employing at least two camera tubes one of which provides a luminance signal, and the other of which provides chrominance signals. A light-beam splitter directs a portion of the light from the image to the photosensitive layer of the luminance camera tube in which a potential image corresponding to the visible image is formed and another portion to the chrominance camera tube for producing chrominance signals. Between the light-beam splitter and chrominance camera tube, a member capable of concentrating the light on a given number of areas evenly distributed throughout the surface of the photosensitive layer is provided. Scanning of the photosensitive layer by an electron beam thus supplies a chrominance signal which transmits the moving parts of the scene substantially without inertia.
Inventors
- 👤 Sing Liong Tan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:07
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/10; H04N23/13; H04N23/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
193 words
A color television camera comprising at least two camera tubes each having a photosensitive layer, optical means for producing an image of a scene to be transmitted on each of said photosensitive layers so that potential images corresponding to the optical image of the scene are formed, means to scan the potential image in the respective photosensitive layers with an electron beam to convert the potential image to an electrical signal, said optical means including means for producing on the photosensitive layers of a first tube for producing a luminance signal a continuous optical image formed substantially throughout the surface of the photosensitive layer, the surface of said layer of said second tube being equal to that of said first tube, and an additional optical member positioned between said optical means and the photosensitive layer of said second tube, said optical member having portions for concentrating the light of the scene on given discrete areas evenly distributed throughout the surface of the photosensitive layer of said second tube whereby a discontinuous optical image is formed on said latter layer from which, by analysis thereof, a chrominance signal for substantially inertialess transmission is obtained
Claim 2
Dependent Claim
193 words
A color television camera comprising at least two camera tubes each having a photosensitive layer, optical means for producing an image of a scene to be transmitted on each of said photosensitive layers so that potential images corresponding to the optical image of the scene are formed, means to scan the potential image in the respective photosensitive layers with an electron beam to convert the potential image to an electrical signal, said optical means including means for producing on the photosensitive layers of a first tube for producing a luminance signal a continuous optical image formed substantially throughout the surface of the photosensitive layer, the surface of said layer of said second tube being equal to that of said first tube, and an additional optical member positioned between said optical means and the photosensitive layer of said second tube, said optical member having portions for concentrating the light of the scene on given discrete areas evenly distributed throughout the surface of the photosensitive layer of said second tube whereby a discontinuous optical image is formed on said latter layer from which, by analysis thereof, a chrominance signal for substantially inertialess transmission is obtained
Claim 3
Dependent Claim
42 words
A color television camera is claimed in claim 1, wherein the camera comprises two additional tubes each of which produces only one chrominance signal and a color splitter through which the optical image is obtained for each of the chrominance signal tubes.
Claim 4
Dependent Claim
34 words
A color television camera as claimed in claim 1 wherein the additional optical member is formed by a plurality of optical fibers having a sectional area diminishing in the direction of the light transmission.
Claim 5
Dependent Claim
24 words
A color television camera as claimed in claim 1 wherein the additional optical member is a transparent plate having a plurality of grooves therein.
Claim 6
Dependent Claim
23 words
A color television camera as claimed in claim 2, wherein said single additional optical member is provided in front of the color splitter.
Claim 7
Dependent Claim
25 words
A color television camera as claimed in claim 2, wherein said additional optical member is arranged between the color splitter and each chrominance signal tube.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |