Device and method for projecting a marking onto a boundary
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F21S-008/00
G02B-027/20
F21V-007/08
출원번호
UP-0741065
(2007-04-27)
등록번호
US-7771074
(2010-08-30)
우선권정보
DE-10 2006 021 421(2006-05-05)
발명자
/ 주소
Kallabis, Gabriel
Busam, Daniel
출원인 / 주소
Stabila Messgerate Gustav Ullrich GmbH
대리인 / 주소
Dennison, Schultz & MacDonald
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
The invention concerns a device for projecting a linear optical marking onto at least one boundary of a room, such as floor surface for example, comprising a light source (12) that emits laser radiation along an optical axis (16) as well as a cuboid lens (14) connected in series with the light sourc
The invention concerns a device for projecting a linear optical marking onto at least one boundary of a room, such as floor surface for example, comprising a light source (12) that emits laser radiation along an optical axis (16) as well as a cuboid lens (14) connected in series with the light source, penetrated by the optical axis and reflecting as well as refracting the radiation. To facilitate fanning and reflecting of light originating from the light source through constructively simple means, the invention proposes that provided in the frontal surface (20) is a channel-shaped depression (40) and provided in the rear surface (22) is a projection (24), both of which are geometrically designed and arranged so that the radiation can be totally reflected and that totally reflected radiation striking the depression can be fanned out, where the optical marking runs to both transverse surfaces of the lens.
대표청구항▼
The invention claimed is: 1. Device for projecting a linear optical marking onto at least a boundary of a room, comprising: a light source that emits light radiation along an optical axis, a lens having cuboid geometry connected in series with the light source, which both reflects and refracts the
The invention claimed is: 1. Device for projecting a linear optical marking onto at least a boundary of a room, comprising: a light source that emits light radiation along an optical axis, a lens having cuboid geometry connected in series with the light source, which both reflects and refracts the radiation, is penetrated by the optical axis, and comprises a first transverse surface and a second transverse surface, which run at an angle to the optical axis, the first transverse surface including a channel-shaped depression and the second transverse surface including a projection, the depression and the projection being arranged such that radiation striking a transitional area between the projection and the second transverse surface is totally reflected, and totally reflected radiation striking the depression can be fanned out, where the optical marking runs to both transverse surfaces of the lens. 2. Device as claimed in claim 1, constructed and arranged for projecting the linear optical marking onto a floor surface of the room. 3. Device as claimed in claim 1, wherein the light radiation is laser radiation. 4. Device as claimed in claim 1, wherein the projection is provided on the second transverse surface, which is a rear surface facing away from the light source. 5. Device as claimed in claim 1, wherein the depression is provided on the first transverse surface, which is a frontal surface of the lens, facing the light source. 6. Device as claimed in claim 1, wherein the lens is composed of a first and second sections, the projection runs in a transitional area between the first and second sections, the first section is of trapezoidal geometry in a sectional plane in which the optical axis penetrates the lens, and the channel-shaped depression is provided in the second section. 7. Device as claimed in claim 6, wherein an additional depression is provided in the second transverse surface opposite the depression, and the second section emanating from the depressions features a trapezoidal geometry with a concave running outer free base surface, constituting a lower outer surface of the lens. 8. Device as claimed in claim 6, wherein the outer free base surface of the first section is designed as a planar upper outer surface of the lens. 9. Device as claimed in claim 8, wherein the outer free base surface is parallel or nearly parallel to the horizontal axis when the lens is in an operating position. 10. Device as claimed in claim 6, wherein the first section has an outer free base surface which is realized as an upper outer surface of the lens composed of multiple planar surfaces, of which at least one is horizontal or nearly horizontal when the lens is in an operating position. 11. Device as claimed in claim 6, wherein the first section on the first transverse surface is inclined toward the optical axis. 12. Device as claimed in claim 6, wherein the lens is aligned with the light source such that the optical axis strikes the first section at an angle α≠90°. 13. Device as claimed in claim 12, wherein the optical axis runs in relation to a horizontal axis at an angle β, where 1°≦β≦3°. 14. Device as claimed in claim 1, wherein the optical axis intersects the first transverse surface at an area emanating an the upper outer surface of the lens to form an obtuse angle. 15. Device as claimed in claim 1, wherein the lens has a width B, a length L and a depth T, where 2B≦L≦3B and/or 2T≦L≦4T and/or 1T≦B≦2T. 16. Device as claimed in claim 1, wherein the projection runs in the center of the second transverse surface. 17. Device as claimed in claim 1, wherein the projection has a triangular-shaped cross section and extends over an entire width of the transverse surface. 18. Device as claimed in claim 1, wherein the second transverse surface is composed of a first area having an angle δ to a vertical axis when the lens is in an operating position and a second area having an angle γ to the vertical axis when the lens is in an operating position, where δ<γ, the projection emanates from the first area, and the second area merges with the first area via a diagonally running surface. 19. Device as claimed in claim 1, wherein the lens is arranged with the channel-shaped depression reflecting the radiation back toward the light source or fanning the radiation spaced from the boundary at a distance A, where 20 mm≦A≦100 mm. 20. Device as claimed in claim 19, wherein 30 mm≦A≦70 mm. 21. Method for projecting a linear optical marking onto at least a boundary of a room by fanning light radiation emitted from a light source and at least partly reflecting and refracting the radiation at or in an optical lens, the radiation being reflected and refracted in such a way that the optical marking is projected both in front of and behind the light source, comprising placing in front of the light source a lens having cuboid geometry with first and second transverse surfaces, which runs at an angle to an optical axis of the radiation striking the lens, the first transverse surface comprising a channel-shaped depression and the second transverse surface comprising a projection, radiation striking a transitional area between the projection and the second transverse surface being totally reflected, and totally reflected radiation striking the depression being fanned out. 22. Method as claimed in claim 21, wherein the boundary is floor surface. 23. Method as claimed in claim 21, wherein the light radiation is laser radiation. 24. Method as claimed in claim 21, wherein radiation is totally reflected by the projection on the second transverse surface which is a rear surface facing away from the light source in the transitional area between the first section of the second transverse surface and the projection, the radiation thus reflected being totally reflected and fanned in a transitional area between the projection and a second section of the second transverse surface and a portion of the fanned radiation is further fanned in the channel-shaped depression provided in the first transverse surface of the lens. 25. Method as claimed in claim 21, wherein the projection and areas of the lens bordering the projection are geometrically adapted to one another such that radiation is totally reflected by a first transitional area between the projection and a bordering area of the second transverse surface and into a second transitional area between the projection and an adjacent area of the second transverse surface, and is totally reflected by the second transitional area toward the first transverse surface. 26. Method as claimed in claim 25, wherein at least a portion of the radiation totally reflected by the second transitional area is reflected in the direction of the depression, where it is then fanned out. 27. Method as claimed in claim 21, wherein radiation reflected by the projection toward the first transverse surface is both fanned in the direction of the light source and reflected and fanned by the first transverse surface in the direction of the second transverse surface.
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이 특허에 인용된 특허 (4)
Goodrich, Gary; Lemer, Larry, Apparatus for producing a visible line of light on a surface.
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