Patent US3828124A successfully refreshed from Google Patents.
US3828124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decreased rotation rate scanning device
Assignee: Singer Co
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Filing: 1973-03-16
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Granted: 1974-08-06
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Expires: 1993-03-16
Abstract
Abstract For use in a laser television projector or the like, a scanning system employing a rotary scanner which permits large angles to be scanned with reduced scanner rotational speeds. The rotary scanner is a hollow cylinder of refractive material having reflective internal surfaces defining a prism. A stationary refractor member surrounds a portion of the hollow cylinder and has a complementary curved surface in close proximity to the cylindrical outer surface thereof. The beam to be deflected passes through the refractor member before and after deflection by the reflective surfaces; thus the deflection angle is increased by refraction as the beam exits from the refractor into the surrounding air.
Inventors
- 👤 R Baum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:39
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/02; H04N3/08; G; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/108
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A scanner system for deflecting a beam of electromagnetic radiation, comprising: a. a scanner member configured as a hollow body of refractive material having a cylindrical external surface and reflective internal surface formed of parallelograms defining a prism which has its longitudinal axis coincident with that of said cylindrical external surface; b. means mounting said scanner member for rotation about said coincident axes; and c. a refractor member mounted in close proximity to said scanner member, said refractor member being configured as a solid piece of refractive material having 1. a curved surface conforming to, and slightly spaced from, the external surface of said scanner member; and 2. a plane surface opposite to said curved surface, the dimensions of said refractor member being such that all rays of radiation reflected by sAid internal surfaces of the scanner member pass through said plane surface.
Claim 2
Dependent Claim
143 words
A scanner system for deflecting a beam of electromagnetic radiation, comprising: a. a scanner member configured as a hollow body of refractive material having a cylindrical external surface and reflective internal surface formed of parallelograms defining a prism which has its longitudinal axis coincident with that of said cylindrical external surface; b. means mounting said scanner member for rotation about said coincident axes; and c. a refractor member mounted in close proximity to said scanner member, said refractor member being configured as a solid piece of refractive material having 1. a curved surface conforming to, and slightly spaced from, the external surface of said scanner member; and 2. a plane surface opposite to said curved surface, the dimensions of said refractor member being such that all rays of radiation reflected by sAid internal surfaces of the scanner member pass through said plane surface.
Claim 3
Dependent Claim
35 words
a plane surface opposite to said curved surface, the dimensions of said refractor member being such that all rays of radiation reflected by sAid internal surfaces of the scanner member pass through said plane surface.
Claim 4
Dependent Claim
35 words
a plane surface opposite to said curved surface, the dimensions of said refractor member being such that all rays of radiation reflected by sAid internal surfaces of the scanner member pass through said plane surface.
Claim 5
Dependent Claim
39 words
A scanner system according to claim 1 further comprising means to rotate said scanner member, whereby radiation incident upon the plane surface of said refractor member is reflected by said internal surfaces along plural paths in a single plane.
Claim 6
Dependent Claim
28 words
A scanner system according to claim 2 wherein said rotating means causes said scanner member to make multiple complete revolutions, whereby said beam is cyclically and repetitively deflected.
Claim 7
Dependent Claim
67 words
A scanner system according to claim 3 further comprising: a. means for generating a beam of light to impinge upon the plane surface of said refractor member in a plane containing said coincident axes and perpendicular to said plane surface; and b. a second scanner positioned to intersect the deflected beam and further deflect said beam in a direction orthogonal to the plane of the first deflection.
Claim 8
Dependent Claim
41 words
A scanner system according to claim 4 wherein the rotational rate of said scanner member and the scan rate of said second scanner are such as to cause the beam to describe a raster pattern after deflection by said second scanner.
Claim 9
Dependent Claim
34 words
A scanner system according to claim 4 wherein tthe rotational rate of said scanner member and the scan rate of said second scanner respectively correspond to predetermined horizontal and vertical television scan rate frequencies.
Claim 10
Dependent Claim
18 words
A scanner system according to claim 6 further including means to modulate said beam with a video signal.
Claim 11
Dependent Claim
16 words
A scanner system according to claim 7 wherein said light beam generating means is a laser.
References Cited (Backward Citations)
US3614194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |