US4058827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color separating optical system for a television camera
Assignee: Fujinon Corp
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Filing: 1976-03-26
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Granted: 1977-11-15
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Expires: 1996-03-26
Abstract
Abstract Means is provided for selectively inserting any one of one or more glass elements having parallel flat sides between the color separating prism and the objective of a television camera so as to adjust the glass length of the optical system to meet the requirements of the particular image pick-up tube concerned.
Inventors
- 👤 Kunio Ando
- 👤 Takemi Saito
- 👤 Takeshi Higuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:43
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/10; H04N23/13; H04N23/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
In a color separating optical system for a television camera comprising a color separating optical system composed of a plurality of prisms provided between an objective and one or more television image pick-up tubes, the improvement wherein means is provided for inserting between said prism and said objective any one of a plurality of glass elements having parallel flat sides and of different thicknesses, wherein the thickness of each said glass element is determined in relation to a particular type of image pick-up tube, whereby insertion of a glass element adjusts the glass length of the optical system to the requirements of a particular type of pick-up tube.
Claim 2
Dependent Claim
108 words
In a color separating optical system for a television camera comprising a color separating optical system composed of a plurality of prisms provided between an objective and one or more television image pick-up tubes, the improvement wherein means is provided for inserting between said prism and said objective any one of a plurality of glass elements having parallel flat sides and of different thicknesses, wherein the thickness of each said glass element is determined in relation to a particular type of image pick-up tube, whereby insertion of a glass element adjusts the glass length of the optical system to the requirements of a particular type of pick-up tube.
Claim 3
Dependent Claim
26 words
A color separating optical system for a television camera as defined in claim 1 wherein each of said glass elements is held in a separate frame.
Claim 4
Dependent Claim
27 words
A color separating optical system for a television camera as defined in claim 1 wherein said glass elements are arranged along the length of a single frame.
Claim 5
Dependent Claim
26 words
A color separating optical system for a television camera as defined in claim 1 wherein one or more of said glass elements are infrared cut filters.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |