EP0102931A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Omnidirectional reflector
Assignee: Individual
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Filing: 1983-08-09
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Granted: —
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Expires: 2003-08-09
Abstract
Abstract The present invention relates to an omnidirectional reflector having a light source (4) situated in the centre thereof, said reflector being adapted to project a light distribution giving a generally even illumination on the plane under the reflector. This reflector is composed of a number of segments (3) of reflector material which are arranged around the light source (4) and turned helically in the vertical sense of the reflector, said segments at least substantially enclosing the light source (4) and forming a symmetrical body.
Inventors
- 👤 Bertil Häbro
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:32
CPC Classifications
F; F21; F21V; F21V7/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
Omnidirectional reflector having a light source situated in the centre thereof, said reflector being adapted to project a light distribution giving a generally even illumination on the plane under the reflector, characterized in that it is composed of a number of segments (3) consisting of reflector material which are arranged around the light source (4) and are helically turned in the vertical sense of the reflector, said segments at least substantially enclosing together the light source (4) and forming a symmetrical body (Fig. 3; Fig. 4).
Claim 2
Dependent Claim
86 words
Omnidirectional reflector having a light source situated in the centre thereof, said reflector being adapted to project a light distribution giving a generally even illumination on the plane under the reflector, characterized in that it is composed of a number of segments (3) consisting of reflector material which are arranged around the light source (4) and are helically turned in the vertical sense of the reflector, said segments at least substantially enclosing together the light source (4) and forming a symmetrical body (Fig. 3; Fig. 4).
Claim 3
Dependent Claim
44 words
Omnidirectional reflector as claimed in claim 1, characterized in that the segments (3) are evenly distributed around the light source (4) and arranged between two concentrical circles (5, 6), the inscribed circle (5) and the circumscribed circle (6), disposed around the light source (4).
Claim 4
Dependent Claim
55 words
Omnidirectional reflector as claimed in claim 2, characterized in that the segments (3) are helically turned in the vertical sense of the reflector between the inscribed circle (5) and the circumscribed circle (6), the diameters of which are constant throughout the height, so that the segments (3) will together form a cylinder-shaped body (Fig. 4).
Claim 5
Dependent Claim
55 words
Omnidirectional reflector as claimed in claim 2, characterized in that the segments (3) are helically turned in the vertical sense of the reflector between the inscribed circle (5) and the circumscribed circle (6), the diameters of which vary in the vertical sense, so that the segments (3) will together form a spherical body (Fig. 3).
Claim 6
Dependent Claim
20 words
Omnidirectional reflector as claimed in any of claims 1-4, characterized by comprising at least four and preferably six segments (3).
Claim 7
Dependent Claim
39 words
Omnidirectional reflector as claimed in claim 5, characterized in that the segments (3) are shaped and arranged such that in a horizontal plane they will have a radiation angle corresponding to 360° divided by the number of segments (3).
Claim 8
Dependent Claim
53 words
Omnidirectional reflector as claimed in claim 6, characterized in that the segments (3) have the form of a circular arc in cross-section, the circular arc extending from the tangential point (7) of a straight line on the inscribed circle (5) to the intersection point (8) of said line with the circumscribed circle (6).
Claim 9
Dependent Claim
61 words
Omnidirectional reflector as claimed in claim 7, characterized in that the circular arc of the segments (3) has its centre of curvature at the apex (13) of an isosceles triangle the base of which consists of the straight line between the tangential point (7) thereof on the inscribed circle (5) and the intersection point (8) thereof with the circumscribed circle (6).
Claim 10
Dependent Claim
56 words
Omnidirectional reflector as claimed in claim 8, characterized in that the isosceles trianc;le, in the apex (13) of which the circular arc of the segments (3) has its centre of curvature, is equilateral when tie circumscribed circle (6) has the double diameter of the inscribed circle (5) and the reflector includes six uniformly distributed segments (3).
Claim 11
Dependent Claim
37 words
Omnidirectional reflector as claimed in any cf claims 2-9, characterized in that the segments (3) reach somewhat outside (at 14) the circumscribed circle (6) so that they will compensate for the extent of the light source (4).
References Cited (Backward Citations)
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