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US5086338A Expired / Lapsed US ⏱️ 0.0 years remaining

Color television camera optical system adjusting for chromatic aberration

Assignee: Canon Inc
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Filing: 1989-11-09
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Granted: 1992-02-04
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Expires: 2009-11-09
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Abstract

Abstract A color television camera for converting an image formed by an objective lens into video signals is contructed with inclusion of a prism for splitting light having passed through the objective lens into a plurality of color components, and a lens unit arranged in between the prism and at least one of a plurality of solid-state image pickup means and having such an optical power that the sizes of the images of all the color components are made coincident with one another.

Inventors

  • 👤 Fumiaki Usui

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 10:05
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/50; H04N23/54; H04N23/10; H04N23/13; H04N23/16; H04N23/58

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 105 words
A color television camera system comprising: an objective lens having chromatic aberrations; splitting means for splitting light having passed through said objective lens into at least first and second color components; first solid-state image pickup means for picking up a first image having said first color component; second solid-state image pickup means for picking up a second image having said second color component; and first light refracting means arranged in between said splitting means and said first solid-state image pickup means and having such an optical power that the size of said first image is made substantially coincident with the size of said second image.
Claim 2
Dependent Claim 105 words
A color television camera system comprising: an objective lens having chromatic aberrations; splitting means for splitting light having passed through said objective lens into at least first and second color components; first solid-state image pickup means for picking up a first image having said first color component; second solid-state image pickup means for picking up a second image having said second color component; and first light refracting means arranged in between said splitting means and said first solid-state image pickup means and having such an optical power that the size of said first image is made substantially coincident with the size of said second image.
Claim 3
Dependent Claim 75 words
A color television camera system according to claim 1, further comprising second light refracting means arranged in between said splitting means and said second solid-state image pickup means and having the same optical power as that of said first light refracting means, the distance between said first solid-state image pickup means and said first light refracting means being different from the distance between said second solid-state image pickup means and said second light refracting means.
Claim 4
Dependent Claim 42 words
A color television camera system according to claim 1, further comprising second light refracting means arranged in between said splitting means and said second solid-state image pickup means and having an optical power different from that of said first light refracting means.
Claim 5
Dependent Claim 23 words
A color television camera system according to claim 1, further comprising means for moving said first light refracting means along an optical axis.
Claim 6
Dependent Claim 56 words
A color television camera system according to claim 1, wherein said objective lens has a lens group movable for zooming, and further comprising detecting means for detecting the position of said lens group and means for moving said first light refracting means along an optical axis on the basis of an output of said detecting means.
Claim 7
Dependent Claim 56 words
A color television camera system according to claim 1, wherein said objective lens has a lens group movable for zooming, and further comprising detecting means for detecting the position of said lens group and means for varying the optical power of said first light refracting means on the basis of an output of said detecting means.
Claim 8
Dependent Claim 28 words
A color television camera system according to claim 1, satisfying the following condition: 3000 mm>|f|>200 mm where f is a focal length of said first light refracting means.
Claim 9
Dependent Claim 101 words
A color television camera for converting an image formed by an objective lens into video signals comprising: splitting means for splitting light having passed through said objective lens into a plurality of color components; a plurality of solid-state image pickup means for picking up the respective images corresponding to said plurality of color components; and first light refracting means arranged in between said splitting means and at least one of said plurality of solid-state image pickup means, and having such an optical power that the sizes of the images having the respective color components are made substantially coincident with one another.
Claim 10
Dependent Claim 101 words
A color television camera for converting an image formed by an objective lens into video signals comprising: splitting means for splitting light having passed through said objective lens into a plurality of color components; a plurality of solid-state image pickup means for picking up the respective images corresponding to said plurality of color components; and first light refracting means arranged in between said splitting means and at least one of said plurality of solid-state image pickup means, and having such an optical power that the sizes of the images having the respective color components are made substantially coincident with one another.
Claim 11
Dependent Claim 84 words
A color television camera according to claim 8, further comprising second light refracting means arranged in between said splitting means and another of said plurality of solid-state image pickup means and having the same optical power as that of said first light refracting means, the distance between said first light refracting means and said one of said plurality of solid-state image pickup means differs from the distance between said second light refracting means and said other of said plurality of solid-state image pickup means.
Claim 12
Dependent Claim 22 words
A color television camera according to claim 8, further comprising means for moving said first light refracting means along an optical axis.
Claim 13
Dependent Claim 55 words
A color television camera according to claim 8, wherein said objective lens has a lens group movable for zooming, and further comprising detecting means for detecting the position of said lens group and means for moving said first light refracting means along an optical axis on the basis of an output of said detecting means.
Claim 14
Dependent Claim 55 words
A color television camera according to claim 8, wherein said objective lens has a lens group movable for zooming, and further comprising detecting means for detecting the position of said lens group and means for varying the optical power of said first light refracting means on the basis of an output of said detecting means.
Claim 15
Dependent Claim 27 words
A color television camera according to claim 8, satisfying the following condition: 3000 mm>|f|>200 mm where f is a focal length of said first light refracting means.
Claim 16
Dependent Claim 153 words
A color television camera for converting an image formed by an objective lens having chromatic aberrations into video signals, comprising: splitting means for splitting light having passed through said objective lens into first, second and third color components; first, second and third image pickup means for picking up the respective images corresponding to said first, second and third color components; first light refracting means arranged in between said splitting means and said first image pickup means and having such an optical power that the size of the image of said first color component substantially coincides with the size of the image of said third color component; and second light refracting means arranged in between said splitting means and said second image pickup means and having such an optical power that the size of the image of said second color component substantially coincides with the size of the image of said third color component.
Claim 17
Dependent Claim 153 words
A color television camera for converting an image formed by an objective lens having chromatic aberrations into video signals, comprising: splitting means for splitting light having passed through said objective lens into first, second and third color components; first, second and third image pickup means for picking up the respective images corresponding to said first, second and third color components; first light refracting means arranged in between said splitting means and said first image pickup means and having such an optical power that the size of the image of said first color component substantially coincides with the size of the image of said third color component; and second light refracting means arranged in between said splitting means and said second image pickup means and having such an optical power that the size of the image of said second color component substantially coincides with the size of the image of said third color component.
Claim 18
Dependent Claim 19 words
A color television camera according to claim 14, wherein said first light refracting means moves along an optical axis.
Claim 19
Dependent Claim 24 words
A color television camera according to claim 14, wherein said first, second and third image pickup means each are a solid-state image pickup element.

References Cited (Backward Citations)

US3802763A Cited
US3976363A Cited
US4164752A Cited
US4521804A Cited
JPS60144703A Cited
JPS61187485A Cited
JPH01166688A Cited
JPH01204588A Cited
FR2649855A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-02-03 1995-08-05 1996-02-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-02-03 1999-08-05 2000-02-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-02-03 2003-08-05 2004-02-04 $7700.00 Window Closed / Lapsed

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