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US3784734A Expired / Lapsed US ⏱️ 0.0 years remaining

Color image pickup device

Assignee: Sony Corp
•
Filing: 1971-10-12
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Granted: 1974-01-08
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Expires: 1991-10-12
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Abstract

Abstract A color image pickup device of the type in which the image is separated into individual colors by a striped filter and is focused on the photoelectric conversion layer of a camera tube. To avoid moire patterns in the reproduced television image, means are provided between the filter and the object being televised to form multiple images of the object spaced apart by an integral multiple of p/N in which 1/N is the duty cycle of the color component stripes and p is the pitch of the stripes.

Inventors

  • 👤 T Watanabe
  • 👤 Y Kubota

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 06:39
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/28; H; H04; H04N; H04N9/00; H04N9/01

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 98 words
A color image pickup device in which a striped colorseparated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising: A. Multiple image producing optical means interposed between the object and said filter for projecting N images of said object on said photoelectric conversion layer spaced apart an integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively.
Claim 2
Dependent Claim 98 words
A color image pickup device in which a striped colorseparated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising: A. Multiple image producing optical means interposed between the object and said filter for projecting N images of said object on said photoelectric conversion layer spaced apart an integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively.
Claim 3
Dependent Claim 125 words
A color image pickup device in which a striped color-separated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising: multiple image producing optical means interposed between the object and said filter for projecting N images of said object on said photoelectric conversion layer spaced apart an integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively, wherein said multiple image producing means includes at least two optical double refractors disposed in such a manner that their image separating directions are different from each other.
Claim 4
Dependent Claim 125 words
A color image pickup device in which a striped color-separated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising: multiple image producing optical means interposed between the object and said filter for projecting N images of said object on said photoelectric conversion layer spaced apart an integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively, wherein said multiple image producing means includes at least two optical double refractors disposed in such a manner that their image separating directions are different from each other.
Claim 5
Dependent Claim 30 words
A color image pickup device as claimed in claim 2, said pickup device comprising, in addition, an optical rotatory means located between said object and said multiple image-producing optical means.
Claim 6
Dependent Claim 54 words
A color image pickup device as claimed in claim 2, said pickup device comprising, in addition, a double refracting means located on a light path between said object and said multiple image-producing optical means in such a manner that the optical axis of the double refracting means is substantially perpendicular to said light path.
Claim 7
Dependent Claim 45 words
A color image pickup device as claimed in claim 1 in which said multiple image means comprises prism means between said object and said photoelectric conversion layer to direct light from said object to a plurality of slightly displaced image locations on said conversion layer.
Claim 8
Dependent Claim 20 words
A color image pickup device as claimed in claim 5 in which said prism means comprises a single, trapezoidal prism.
Claim 9
Dependent Claim 144 words
A color image pickup device in which a striped color-separated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising: multiple image producing optical means interposed between the object and said filter for projecting N images of said object on said photOelectric conversion layer spaced apart an integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively, wherein said multiple image means includes prism means between said object and said photoelectric conversion layer to direct light from said object to a plurality of slightly displaced image locations on said conversion layer, said prism means including a micro-prism having a plurality of groups of facets.
Claim 10
Dependent Claim 144 words
A color image pickup device in which a striped color-separated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising: multiple image producing optical means interposed between the object and said filter for projecting N images of said object on said photOelectric conversion layer spaced apart an integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively, wherein said multiple image means includes prism means between said object and said photoelectric conversion layer to direct light from said object to a plurality of slightly displaced image locations on said conversion layer, said prism means including a micro-prism having a plurality of groups of facets.
Claim 11
Dependent Claim 130 words
A color image pickup device in which a striped color-separated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising: multiple image producing optical means interposed between the object and said filter for projecting N images of said object on said photoelectric conversion layer spaced apart an integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively, wherein said multiple image means includes a plurality of half mirrors to divide light from said object into a plurality of light paths directed toward slightly separated locations on said photoelectric conversion layer.
Claim 12
Dependent Claim 130 words
A color image pickup device in which a striped color-separated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising: multiple image producing optical means interposed between the object and said filter for projecting N images of said object on said photoelectric conversion layer spaced apart an integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively, wherein said multiple image means includes a plurality of half mirrors to divide light from said object into a plurality of light paths directed toward slightly separated locations on said photoelectric conversion layer.
Claim 13
Dependent Claim 96 words
A color image pickup device in which a striped color-separated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising double refracting optical means interposed between the object and said filter for projecting N images of said object on said photoelectric conversion layer spaced apart in integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively.
Claim 14
Dependent Claim 96 words
A color image pickup device in which a striped color-separated image of an object to be televised is projected through a striped color filter on the photoelectric conversion layer of an image pickup tube, said device comprising double refracting optical means interposed between the object and said filter for projecting N images of said object on said photoelectric conversion layer spaced apart in integral multiple of p/N in the direction of array of color component stripes of said filter, where the duty cycle and pitch of the primary color component stripes are 1/N and p respectively.
Claim 15
Dependent Claim 21 words
A color image pickup device as claimed in claim 9 in which said double refracting means comprises a sheet of quartz.

References Cited (Backward Citations)

US2696520A Cited
US3647948A Cited
US3647946A Cited
US3716666A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-01-07 1977-07-09 1978-01-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-07 1981-07-09 1982-01-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-07 1985-07-09 1986-01-08 $7700.00 Window Closed / Lapsed

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