US3559546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube screen exposure
Assignee: GTE Sylvania Inc
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Filing: 1967-11-01
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Granted: 1971-02-02
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Expires: 1987-11-01
Abstract
Abstract A method and optical system for light forming a cathode ray tube patterned screen utilizing unattenuated radiant energy of the light source. A photosensitive phosphor containing coating disposed on the screen panel is exposed, through an adjacently positioned mask, by radiant energy of substantially constant intensity from a substantially unattenuated direct light source oriented within an apertured light enclosure. Since the utilized area of the light source is smaller than the discrete aperture area, the light source is moved in a predetermined manner relative to the aperture to effect a simulated light source area equaling the aperture area.
Inventors
- 👤 Lefler H Mckee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:52
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271; H01J9/2272
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
62 words
An optical system according to claim 1 wherein said means for continuously moving said light source effects a reciprocating lateral movement of said light source in a plane substantially parallel to the plane of said aperture, said luminous axis being moved in the plane of said aperture axis in a manner to effect substantially equidistant reciprocal movement relative to said aperture axis.
Claim 2
Dependent Claim
49 words
An optical system according to claim 1 wherein said means for continuously moving said light source effects a rotating lateral movement of said light source in a plane substantially parallel to the plane of said aperture, said luminous axis being moved in a circular manner about said aperture axis.
Claim 3
Dependent Claim
23 words
An optical system according to claim 1 wherein a corrective lens is spacedly positioned between said unattenuated light source and said masked screen.
Claim 4
Dependent Claim
34 words
An optical system according to claim 1 wherein said light-moving means has provisions for predeterminately moving said light source at a frequency less than the resonant frequency of any portion of the associated system.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |