US4080623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television camera with internal registration
Assignee: US Philips Corp
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Filing: 1976-10-01
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Granted: 1978-03-21
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Expires: 1996-10-01
Abstract
Abstract A color television camera including a plurality of camera tubes and an image registration system in which information is projected, via the beam path of the viewer, to a beam splitting optical system. A registration image is projected onto each of the camera tubes by providing a suitable end face of one of the prisms of the splitting optical system with a reflective layer or by arranging a mirror or a prism at this area.
Inventors
- 👤 Howard Curtis Needs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:13
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/10; H04N23/13; H04N23/15; H04N23/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
A television camera including a pick-up tube assembly comprising a plurality of camera pick-up tubes and a beam-separation assembly for directing respective image-forming beam components onto corresponding ones of said camera pick-up tubes, a viewfinder, input optical means for receiving image-forming radiation from a scene and forming corresponding images on said camera pick-up tubes and including a beam splitter arranged to direct a portion of said image-forming radiation along a first optical path terminating at said pick-up tube assembly, and a further portion of said image-forming radiation along a second optical path terminating at said viewfinder, and means including an image carrier located in an optical path within said television camera and arranged selectively to project a registration-image-forming beam along at least a part of said second optical path towards said input optical means, said input optical means being arranged to direct said projected registration-image-forming beam along said first optical path towards said pick-up tube assembly to form a registration image on each said camera pick-up tube.
Claim 2
Dependent Claim
167 words
A television camera including a pick-up tube assembly comprising a plurality of camera pick-up tubes and a beam-separation assembly for directing respective image-forming beam components onto corresponding ones of said camera pick-up tubes, a viewfinder, input optical means for receiving image-forming radiation from a scene and forming corresponding images on said camera pick-up tubes and including a beam splitter arranged to direct a portion of said image-forming radiation along a first optical path terminating at said pick-up tube assembly, and a further portion of said image-forming radiation along a second optical path terminating at said viewfinder, and means including an image carrier located in an optical path within said television camera and arranged selectively to project a registration-image-forming beam along at least a part of said second optical path towards said input optical means, said input optical means being arranged to direct said projected registration-image-forming beam along said first optical path towards said pick-up tube assembly to form a registration image on each said camera pick-up tube.
Claim 3
Dependent Claim
25 words
A television camera as claimed in claim 1 in which said image carrier is located in a real image plane of said input optical means.
Claim 4
Dependent Claim
22 words
A television camera as claimed in claim 2 in which said real image plane comprises a real object plane of said viewfinder.
Claim 5
Dependent Claim
29 words
A television camera as claimed in claim 3 in which said image carrier is a transparency arranged to be displaced out of said second optical path when not required.
Claim 6
Dependent Claim
40 words
A television camera as claimed in claim 3 in which said image carrier is a translucent screen and said registration image is selectively projected onto said translucent screen from a direction inclined to the axis of said second optical path.
Claim 7
Dependent Claim
44 words
A television camera as claimed in claim 1 including means for selectively interrupting that part of said second optical path nearest to said viewfinder and to optically connect said means for projecting a registration-image-forming beam to the other part of said second optical path.
Claim 8
Dependent Claim
50 words
A television camera as claimed in claim 1 in which the beam splitter forming part of said input optical means includes a reflective element arranged to project the registration-image-forming beam from said second optical path directed by said beam splitter along said first optical path towards said pick-up tube assembly.
Claim 9
Dependent Claim
44 words
A television camera as claimed in claim 2 in which said beam splitter comprises a prism assembly having therein a partially transmissive reflecting surface inclined to the normal to the input-forming-beam axis, and said reflective element comprises a reflecting side-face to said prism assembly.
Claim 10
Dependent Claim
18 words
A television camera as claimed in claim 7 in which said reflective element is formed by a prism.
References Cited (Backward Citations)
GB1222022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |