US3633022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp
Assignee: Individual
•
Filing: 1969-12-08
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Granted: 1972-01-04
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Expires: 1989-12-08
Abstract
Abstract A double-beam lamp, such as a taillight or warning light has a collective lens bulb in the axis of a surrounding reflector in whose focal space, the luminous wire of the lens bulb is located. The collective lens projects a first beam, and the reflector, whose shape deviates from a geometrical parabola, projects a second beam, and while one of the beams is made narrow and conical, the other beam is spread in horizontal direction by a cylindrical dispersing lens over a wide angle for lateral visibility while remaining narrow in the vertical direction to avoid loss of light.
Inventors
- 👤 Knut Otto Sassmanshausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:28
CPC Classifications
F; F21; F21V; F21V5/00; F21V5/08; F21S; F21S41/00; F21S41/10; F21S41/14; F21S41/162; F21S41/166; F21S41/168; F21S43/00; F21S43/40
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
222 words
Double-beam lamp, particularly for use as taillight or warning light, comprising a collective lens, and a luminous boDy located in the axis of said lens between the same and a focal point of the same so that a first conical beam of light is projected by said lens; a concave substantially paraboloid reflector surrounding said lens and said luminous body and having an axis coinciding with said axis, sections of said reflector deviating from a parabola having an exactly geometrical shape so that said reflector has a focal space extending along said optical axis a distance between 3 percent and 10 percent of the diameter of the open end of said reflector; said luminous body being at least partly located in at least a part of said focal space of said reflector so that a second conical beam of light surrounding said first conical beam is projected by said reflector toward said open end of said reflector; and an optical dispersing system located at said open end for dispersing at least one of said conical beams only in one direction a wide angle so that an oblong area extending in said one direction is illuminated by said dispersed beam, while a substantially circular area at least partly coinciding with the central portion of said oblong area is illuminated by the other beam.
Claim 2
Dependent Claim
222 words
Double-beam lamp, particularly for use as taillight or warning light, comprising a collective lens, and a luminous boDy located in the axis of said lens between the same and a focal point of the same so that a first conical beam of light is projected by said lens; a concave substantially paraboloid reflector surrounding said lens and said luminous body and having an axis coinciding with said axis, sections of said reflector deviating from a parabola having an exactly geometrical shape so that said reflector has a focal space extending along said optical axis a distance between 3 percent and 10 percent of the diameter of the open end of said reflector; said luminous body being at least partly located in at least a part of said focal space of said reflector so that a second conical beam of light surrounding said first conical beam is projected by said reflector toward said open end of said reflector; and an optical dispersing system located at said open end for dispersing at least one of said conical beams only in one direction a wide angle so that an oblong area extending in said one direction is illuminated by said dispersed beam, while a substantially circular area at least partly coinciding with the central portion of said oblong area is illuminated by the other beam.
Claim 3
Dependent Claim
61 words
Double-beam lamp as claimed in claim 1 wherein said optical dispersing system includes a transparent cover plate for closing said open end of said reflector and including a central portion aligned with said collective lens and passed by said first beam, and an annular portion passed by said second beam; and wherein one of said portions is a substantially cylindrical lens.
Claim 4
Dependent Claim
48 words
Double-beam lamp as claimed in claim 1 wherein said dispersing system includes a substantially cylindrical dispersing lens which is thinnest along a centerline transverse to said optical axis and to said one direction, and uniformly increases in thickness in said one direction toward either side of said centerline.
Claim 5
Dependent Claim
43 words
Double-beam lamp as claimed in claim 3 wherein said substantially cylindrical dispersing lens is located in front of only said collective lens aligned with the same so that said first beam passes through said dispersing lens and is spread in said one direction.
Claim 6
Dependent Claim
41 words
Double-beam lamp as claimed in claim 3 wherein said substantially cylindrical dispersing lens is located in front of said open end of said reflector so that said second beam passes through said dispersing lens and is spread in said one direction.
Claim 7
Dependent Claim
15 words
Double-beam lamp as claimed in claim 1 wherein said dispersing system includes a biconcave lens.
Claim 8
Dependent Claim
30 words
Double-beam lamp as claimed in claim 1 wherein said concave reflector is composed of a plurality of annular paraboloid reflecting zones having different focal points spaced along said optical axis.
Claim 9
Dependent Claim
37 words
Double-beam lamp as claimed in claim 7 wherein the transitions between said reflecting zones and the paraboloid shape of the same are selected so that said focal points form a focal line extending along said optical axis.
Claim 10
Dependent Claim
34 words
Double-beam lamp as claimed in claim 1 wherein said reflector is composed of a plurality of annular planar reflecting surfaces connected to each other so that said planar reflecting surfaces together approximate a paraboloid.
Claim 11
Dependent Claim
17 words
Double-beam lamp as claimed in claim 9 wherein said planar reflecting surfaces extend tangentially to a paraboloid.
Claim 12
Dependent Claim
103 words
Double-beam lamp as claimed in claim 1 wherein said first conical beam has in a plane extending through the optical axis of said collective lens and in the longitudinal direction of said luminous body, which is disposed at right angles of said axis, an aperture angle at least 1.3 times greater than the corresponding angle of aperture at right angles to the longitudinal direction of said luminous body; wherein said collective lens and said luminous body are combined in a bulb; and comprising a holder for said bulb fixing the angular position of the axis of said bulb and of said luminous body.
Claim 13
Dependent Claim
65 words
A lamp as claimed in claim 11 in which the aperture angle of the conical light beam to be produced by said collective lens of the bulb in the plane extending through the optical axis and the longitudinal direction of said luminous body, is 1.5 to 2.5 times larger than the corresponding aperture angle at right angles to the longitudinal direction of said luminous body.
Claim 14
Dependent Claim
72 words
A lamp as claimed in claim 11, in which the luminous body of the lens bulb has a ratio of length to external diameter of more than 10:1, and its central portion deviates from the line connecting the end portions of the section which glows in operation by at most 22 percent of its length, its longitudinal direction being arranged approximately at right angles to the optical axis of the lens bulb.
Claim 15
Dependent Claim
26 words
A lamp as claimed in claim 11 in which said luminous body is arranged approximately at right angles at the optical axis of the lens bulb.
Claim 16
Dependent Claim
36 words
A lamp as claimed in claim 14 wherein said luminous body has at its central portion a smaller spacing from a plane extending through the largest diameter of said collective lens than at its end portions.
Claim 17
Dependent Claim
47 words
A lamp as claimed in claim 11 in which said lens bulb is provided with a prefocusing miniature base flange, and in which the angular position of the axis of said bulb is fixed by a projection of said holder engaging a recess in a base flange.
Claim 18
Dependent Claim
37 words
A lamp as claimed in claim 1 wherein said reflector has at least one peripheral sealing surface, and comprising a closure cap having a sealing surface in sealing contact with said peripheral sealing surface of said reflector.
Claim 19
Dependent Claim
93 words
A double-beam lamp as claimed in claim 1 wherein said dispersing system includes a substantially cylindrical dispersing lens which is thinnest and plane parallel in a circular central portion axially aligned with said collective lens and uniformly increases in thickness in said one direction toward opposite sides of said dispersing lens; wherein said collective lens projects said first conical beam through said thin plane-parallel center portion; and wherein said second conical beam passes through the outer annular portion of said cylindrical dispersing lens and is dispersed by the same in said one direction.
Claim 20
Dependent Claim
89 words
A double-beam lamp as claimed in claim 1 wherein said dispersing system includes a transparent plane-parallel plate having a center portion which is a substantially cylindrical lens aligned with said collective lens along said optical axis and uniformly increasing in thickness in said one direction toward opposite sides of said cylindrical lens; wherein said collective lens projects said first beam through said cylindrical lens; wherein said second conical beam passes through said plane-parallel plate; and wherein said first beam is dispersed by said cylindrical lens in said one direction.
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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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |