IPC分类号：
F21V7/00 | F21V14/04 | F21V14/06 | F21V5/04 | F21V13/04 | F21Y115/10
国民经济行业分类号：
C4350 | C3874 | C4090 | C3879
当前申请(专利权)人：
COLORDYNE LIMITED
原始申请(专利权)人：
COLORDYNE LIMITED
当前申请(专利权)人地址：
2 Cormont Road, London SE5 9RA, GB
代理机构：
HARRIS, OLIVER JOHN RICHARD
摘要：
A lighting device comprises a light emitter (100) with a spherical translucent body (101) containing at least one reflector (102) and defining large, combined incident (109) and emission (105) lenses. The light emitter reflects and focuses light from a waveguide (40) to project a beam onto a target surface. The light emitter is preferably slidably mounted for rotation on a support element (20) which may comprise a circular aperture (22) in a plate, and may be configured as a desk or stage lamp, a wall light, or a downlighter suspended beneath a ceiling. The waveguide or light emitter may provide ambient or uplighting in addition to the beam.
技术问题语段：
The technical problem addressed in this patent is the need for a lighting device that can direct a beam of light to illuminate a target, such as a book on a workdesk or a performer on a stage, without being mechanically complex or having intricate moving parts that can be difficult to assemble or adjust. The current devices that are adjustable tend to have uneven light intensity and can be difficult to clean, limiting their functionality. The invention provides a solution by incorporating a translucent body with a reflector pivotally mounted on top of a vertical tubular light conductor, allowing for easy adjustment and well-defined beam of light.
技术功效语段：
The present invention provides a lighting device that can direct a beam of light to illuminate a target, such as a book on a workdesk or a performer on a stage. The device includes a translucent body with a reflector, which can be rotated to change the direction of the beam. The device also includes a light conductor that conducts light from a light source to the reflector, and the light source can be a point light source such as an LED. The device can be adjusted to control the intensity of the beam and can produce a well-defined beam with uniform light intensity. The device is mechanically simple, easy to assemble and adjust, and can incorporate other functionality such as light detection or image projection.
权利要求：
1. A lighting device including: at least one light emitter (100), at least one light source (30), and at least one light conductor (40) arranged to conduct light from the light source to the light emitter; the light emitter (100) including a translucent body (101) and a first reflector (102), the first reflector being connected to or integral with the translucent body; the translucent body (101) including a first emitter portion (103), a first incident portion (107), and a spherically curved surface, the spherically curved surface defining a first emitter lens (105) of the first emitter portion and a first incident lens (109) of the first incident portion; the first incident portion (107) being arranged to conduct light emitted from an emission surface (41) of the light conductor, via the first incident lens, to the first reflector; the first reflector (102) being arranged to reflect the light emitted from the emission surface of the light conductor to exit the light emitter as a beam of light via the first emitter lens (105); wherein the light emitter (100) is rotatable with at least two degrees of freedom relative to the light conductor (40) to direct the beam; and wherein the light emitter (100) is spaced apart from the light conductor (40) to define a separation distance (S) between the emission surface (41) and the first incident lens (109), the separation distance (S) being selected relative to a distance between the light emitter and a target surface (202) so that the first incident lens and first emitter lens form a conjugate imaging system with a target plane at the target surface (202) and an object plane at the emission surface (41) of the light conductor; and wherein either (i) an adjustment means (60, 62) is provided for varying the separation distance (S), or (ii) a variable focus optical element (63) is arranged between the first incident lens and the object plane at the emission surface; and further including at least one of feature (A) and feature (B), wherein: in accordance with feature (A) an object (75) is arranged between the light conductor and the light emitter, and the lighting device is arranged to project an image (75') of the object onto the target surface (202); and in accordance with feature (B) the light conductor (40) has a cross section which defines a cross sectional shape of the beam, and the lighting device is arranged to project a correspondingly shaped, sharply defined pool of light onto the target surface (202).
2. A lighting device according to claim 1, wherein said lighting device includes feature (A).
3. A lighting device according to claim 1, wherein said lighting device includes feature (B).
4. A lighting device according to claim 1, wherein said lighting device includes both feature (A) and feature (B).
5. A lighting device according to claim 1, wherein the first emitter lens (105) defines a first emitter axis (E1), and the first emitter lens extends over at least most of a total section area of the light emitter normal to the first emitter axis (E1) when viewed along the first emitter axis.
6. A lighting device according to claim 1, wherein the first incident lens (109) defines a first incident axis (I1), and the first incident lens extends over at least most of a total section area of the light emitter normal to the first incident axis (I1) when viewed along the first incident axis.
7. A lighting device according to claim 1, wherein the lighting device includes at least one support element (20), and the curved surface of the translucent body (101) is slidably mounted on the support element (20) to support the light emitter in rotation with said at least two degrees of freedom relative to the support element.
8. A lighting device according to claim 1, wherein the first reflector (102) is located within the translucent body (101).
9. A lighting device according to claim 1, wherein the translucent body (101) is spherical.
10. A lighting device according to claim 1, wherein the light conductor (40) is a body of solid translucent material.
11. A lighting device according to claim 1, claim 3 or claim 4, wherein the cross section is a non-circular cross section.