LIGHTING DEVICE WITH MOTORISED COLLIMATION CONTROL

Abstract

A lighting device for professional illumination. The device includes a main housing having a front opening, a first light source, a first reflector configured to receive at least a portion of light emitted by the first light source and to reflect at least a portion thereof, and a second reflector configured to receive at least a portion of light reflected by the first reflector and to reflect at least a portion thereof. The lighting device is configured to emit at least a portion of light reflected by the second reflector out of the lighting device through the front opening. The lighting device further includes an actuator configured to move the first reflector or the second reflector in relation to each other in response to a predetermined control signal.

Claims

1. A lighting device configured for professional illumination, the lighting device comprising: a main housing comprising a front opening, a first light source configured to emit light, a first reflector configured to receive at least a portion of light emitted by the first light source and to reflect at least a portion thereof, a second reflector configured to receive at least a portion of light reflected by the first reflector and to reflect at least a portion thereof, wherein the lighting device is configured to emit at least a portion of light reflected by the second reflector out of the lighting device through the front opening, wherein the lighting device further comprises an actuator configured to move the first reflector or the second reflector in relation to each other, wherein the actuator is further configured to move the first reflector or the second reflector in response to a predetermined control signal.

2. The lighting device according to claim 1, wherein the portion of light emitted out of the lighting device is collimated or visually collimated.

3. The lighting device according to claim 1, wherein the actuator is configured to move the first reflector in relation to the second reflector along a predetermined direction, or a longitudinal direction, and wherein the actuator is configured to move the first reflector in response to the predetermined control signal.

4. The lighting device according to claim 1, wherein the actuator is configured to move the first reflector, or alternatively the second reflector, along a single predetermined direction or axis.

5. The lighting device according to claim 1, wherein the second reflector is a concave reflector or a substantially parabolic reflector.

6. The lighting device according to claim 1, wherein the first reflector is a convex reflector.

7. The lighting device according to claim 1, wherein the first reflector is a plane mirror.

8. The lighting device according to claim 1, wherein the second reflector comprises a reflector opening and wherein the first light source and the second reflector are arranged such that at least a portion of light emitted by the first light source can travel through the reflector opening before being received by the first reflector.

9. The lighting device according to claim 8, wherein the reflector opening comprises an aperture fitting configured to fit into the reflector opening of the second reflector, wherein the aperture fitting is configured to allow light from the first light source to pass through the second reflector towards the first reflector.

10. The lighting device according to claim 9, wherein an inner surface, or at least a part thereof, of the aperture fitting comprises or has anti-reflective properties due to being coated or covered in an anti-reflective material and/or due to comprising an exterior providing anti-reflective properties.

11. The lighting device according to claim 1, wherein the actuator comprises a spindle or a spindle shaft or other connecting element connected to the first reflector wherein movement of the spindle or spindle shaft or other connecting element causes movement of the first reflector and wherein the first reflector further comprises a cap unit arranged through the first reflector wherein the cap unit is configured to receive at least a part of the spindle or spindle shaft when the first reflector is moved at or near a first end position.

12. The lighting device according to claim 11, wherein an outer surface, or at least a part thereof, of the cap unit comprises reflective properties due to being coated or covered in a reflective material and/or due to comprising an exterior providing reflective properties.

13. The lighting device according to claim 1, wherein the actuator is supported in the main housing by a number of radially extending ribs.

14. The lighting device according to claim 1, wherein the main housing comprises a transparent front cover arranged within the front opening and the actuator is held in place by or at the front cover.

15. The lighting device according to claim 1, wherein the first reflector has a reflecting surface configured to reflect at least a portion of light emitted by the first light source and the actuator is located behind the reflecting surface of the first reflector.

16. The lighting device according to claim 1, wherein the lighting device further comprises a separate secondary light source arranged centrally or substantially centrally at the front opening.

17. The lighting device according to claim 16, wherein the actuator is located between the first reflector and the separate secondary light source.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0062] FIG. 1 is a perspective view schematically illustrating one embodiment of a lighting device;

[0063] FIG. 2 schematically illustrates a front view of a head of a moving head lighting device, e.g. a lighting device generally corresponding to the one illustrated in FIG. 1 but with a differently shaped head and with additional features;

[0064] FIG. 3 schematically illustrates a cross-sectional view of the head of a lighting device along section A-A of FIG. 2;

[0065] FIGS. 4 and 5 schematically illustrate a cross-sectional view of an actuator for moving a reflector, e.g. the first reflector;

[0066] FIGS. 6A, 6B, and 6C schematically illustrate the effect movement of the first reflector can have on light emitted by the lighting device as disclosed herein according to some embodiments;

[0067] FIG. 7 is a photograph of a visually collimated beam produced by a lighting device as disclosed herein; and

[0068] FIGS. 8A-8F schematically illustrate different aspects of further exemplary embodiments of a lighting device.

DETAILED DESCRIPTION

[0069] Various aspects and embodiments of a lighting device configured for professional illumination as disclosed herein will now be described with reference to the figures.

[0070] FIG. 1 is a perspective view schematically illustrating one embodiment of a lighting device. FIG. 1 schematically illustrates a lighting device 1 that may be used (e.g. together with one or more additional lighting devices of a same and/or different type(s)) to illuminate a stage, area, or other e.g. during events like a music concert, theatre performance, a fashion show, a sporting event, a convention, etc. One or more of such lighting devices may e.g. also be used to illuminate at least a part of a building, a landmark, a sporting field, a monument, or the like.

[0071] The lighting device 1 may also be referred to as a lighting fixture or a projector.

[0072] The lighting device 1 comprises a (first) light source (not shown; see e.g. 11 in FIG. 3) configured to emit a light beam in a given direction. The light source may be or comprise a lamp, for example a halogen lamp, a fluorescent lamp, a discharge lamp, or a light source comprising one or more light emission diodes (LEDs). More than one light source can be used in a single lighting device, as typically is the case of a lighting device comprising a plurality of LEDs.

[0073] The light source is housed inside a main housing 2, for example made of polymeric material. The housing 2 is provided with a front opening 3 from which the light beam emitted by the light source may exit the lighting device 1. The front opening 3 and/or the interior of the housing 2 may be provided with lenses or other optics in order to control or influence the emitted light beam as generally known.

[0074] The housing 2 is, as an example, supported by a support arrangement 4 that can be rested on a generally horizontal or planar surface or used to suspend the lighting device 1 from a fly system of a stage, etc. The support arrangement 4 may comprise a base 5 supporting a movable supporting element 6. In the embodiment shown in FIG. 1, the movable supporting element 6 is generally U-shaped or shaped as a yoke or similar. However, other shapes of the movable supporting element 6 are also possible.

[0075] The base 5 and/or the movable supporting element 6 typically houses at least one control unit 7 or similar for controlling operation of the lighting device 1. A user may interact with the control unit(s) 7 through a user interface 8, e.g. comprising a plurality of push-buttons, knobs, a display, and/or other user interface elements, e.g. provided on the base 5 and/or the movable supporting element 6. Alternatively or in addition, a user may interact with the control unit(s) 7 through remote control.

[0076] The housing 2 may be rotated about a predetermined axis X preferably being an at least substantially horizontal axis relative to the supporting element 6. This may be done by a given motor of the lighting device 1 e.g. located in one of the ‘arms’ of the U- or yoke shaped supporting element 6. The motor is preferably an electric motor such as a stepper motor. The rotation about the axis X may alternatively be accomplished using two electrical motors with one motor being located in each ‘arm’ of the U-shaped supporting element 6. The motor(s) may alternatively be located inside the housing 2.

[0077] By rotating the housing 2 about the horizontal axis X, the light source will accordingly be rotated about the horizontal axis X allowing different points or areas to be illuminated with a motion often referred to as a “tilt motion” of the light source.

[0078] Furthermore, the supporting element 6 (and thereby the housing 2) may be rotated about a predetermined axis Y (either instead of or in addition to about the axis X) preferably being an at least substantially vertical axis relative to the base 5. This rotation of the supporting element 6 may e.g. be performed by a further motor provided in the supporting element 6, e.g. centrally at the bottom of the U-shape. The motor may as an alternative be located inside the base 5. The further motor is preferably an electric motor, particularly a stepper motor.

[0079] By rotating the supporting element 6 about the vertical axis Y, the light source will accordingly be rotated about the vertical axis Y allowing different points or areas to be illuminated. This motion is often referred to as a “pan motion” of the light source.

[0080] The motors controlling rotation about the vertical axis Y and/or about the horizontal axis X allows the light source to be positioned in virtually any desired angle both about the horizontal axis X and about the vertical axis Y. The light beam emitted by the light source can thus be controlled to be directed in virtually any desired direction.

[0081] The motor(s) may be controlled by the control unit(s) 7.

[0082] According to an aspect as disclosed herein, the lighting device 1 further comprises an actuator or the like (not shown; see e.g. 9 in FIGS. 4 and 5) as will be illustrated and explained further in connection with FIGS. 3, 4 and 5. The actuator is configured to move a first reflector or a second reflector in relation to each other as disclosed herein. The lighting device 1 is connectable to receive electrical power and/or comprises one or more re-chargeable power sources configured to supply electrical power to the light source(s), the electric motor(s), the control unit(s) 7, the actuator, and/or, if needed, the user interface 8.

[0083] The lighting device 1 may further comprise a separate secondary light source (not shown; see e.g. 20 in FIGS. 2, 3 and 4) as will be illustrated and explained further in connection with FIGS. 2 and 3. The separate secondary light source is separate from the first light source and the separate secondary light source is at least in some embodiments arranged substantially centrally in or at the opening 3.

[0084] In some embodiments, the first light source and/or the separate secondary light source is/are an LED array, e.g. white, colour, or colour-changing. The separate secondary light source may in some embodiments be a strobe light or be programmed to function as a strobe light.

[0085] FIG. 2 schematically illustrates a front view of a head of a moving head lighting device, e.g. a lighting device generally corresponding to the one illustrated in FIG. 1 but with a differently shaped head and with additional features. Illustrated is a front view of a housing 2 of a lighting device provided with an opening 3 as explained in connection with FIG. 1 and as disclosed herein. Further shown, is a secondary light source 20 being separate from the first or main light source (see e.g. 11 in FIG. 3) that is arranged in a separate housing 21 being smaller than the opening 3. The separate housing 21 (and thereby the separate secondary light source 20) is arranged substantially centrally at or in the opening 3. In the particular shown embodiment, the separate housing 21 is supported in the housing 2 by a number of, here three as an example, radially extending ribs 15. The actuator (not shown; see e.g. 9 in FIGS. 4 and 5) may also be supported by a number of radially extending ribs, which may be the same as or different from the radially extending ribs 15 supporting the separate housing 21. Further indicated is a second reflector 12 as disclosed herein, which will be described in greater detail in connection with FIG. 3, and a cross section line A-A, where FIG. 3 illustrates the lighting device along section A-A.

[0086] FIG. 3 schematically illustrates a cross-sectional view of the head of a lighting device along section A-A of FIG. 2. Illustrated is a cross section of a lighting device 1 having a housing 2, a front opening 3, a first or primary light source 11, and an actuator 9. Further illustrated is a longitudinal direction L.

[0087] In the shown and corresponding embodiments, the lighting device 1 comprises a first reflector 14 and a second reflector 12 wherein the first reflector 14 is configured to receive at least a portion of light emitted by the first light source 11 and to reflect at least a portion of the received light to the second reflector 12. Additionally, the second reflector 12 is configured to receive at least a portion of light reflected by the first reflector 14 and to reflect at least a portion of the received light out through the opening 3. Further, in the shown embodiment, the first reflector 14 is a convex reflector and the second reflector 12 is a concave reflector.

[0088] Examples of paths of light are indicated with arrows having dotted lines.

[0089] The first reflector 14 is in the shown and corresponding embodiments located substantially aligned with the centre of the front opening 3 and furthermore between the first light source 11 and actuator 9 while the second reflector 12 is located inside the housing 2. The second reflector 12 comprises a reflector opening 13 and the first light source 11 and the second reflector 12 are arranged such that at least a portion of light emitted by the first light source 11 can travel through the reflector opening 13 before being received by the first reflector 14. In some embodiments, the reflector opening 13 may in some further embodiments comprise an aperture fitting or the like (not shown; see e.g. 13A in FIGS. 8A, B, D, and F for an example) rather than just being a simple or simpler opening.

[0090] In the embodiment shown in FIG. 3, the lighting device 1 comprises a separate secondary light source 20, which is located in a separate housing 21. The actuator 9 is located between the first reflector 14 and the separate secondary light source 20/the separate housing 21. Also shown in the embodiment in FIG. 3, is the actuator 9 being located behind/opposite the reflecting surface of the first reflector 14, i.e. on the side of the first reflector 14, which does not reflect light received from the first light source 11. More specifically, the actuator 9 is located between the first reflector 14 (at or near the non-reflecting side of the first reflector 14) and the separate housing 21 of the secondary separate secondary light source 20.

[0091] By moving the first reflector 14 in relation to the second reflector 12 along a predetermined direction, such as the longitudinal direction L as shown and indicated by the double-arrow at the first reflector 14, i.e. closer to or further from the second reflector 12, the emitted light exiting the opening 3 can be made, by appropriately setting the distance e.g. to be within a predetermined interval between the first and the second reflector, to be a collimated or visually collimated light beam being substantially parallel to the longitudinal direction L (indicated by the arrow at the bottom of the Figure). The produced light beam will thereby appear collimated, i.e. be visually collimated, out to a distance after which it spreads out and appears diffused. Changing the distance between the first reflector 14 and the second reflector 12 will change the distance out to which the beam is visually collimated, as is illustrated and explained further in connection with FIG. 6. The actuator 9 is in the particular shown embodiment configured to move the first reflector 14 in relation to the second reflector 12 (by moving the first reflector 14 while the second reflector 12 is stationarily fixed) in response to a predetermined control signal provided by at least one control unit or similar 7. Accordingly, the movement (and thereby the resulting emitted light) may be controlled, e.g. according to a program, sequence, etc., to create various effects, e.g. as explained in connection with FIGS. 6A to 6C.

[0092] Both the first reflector 14 and the separate secondary light source 20 (and advantageously thereby the separate housing 21) are, at least in the shown and corresponding embodiments, circularly shaped as seen in the longitudinal direction L and about the same radial size. The secondary light source 20/the separate housing 21 is smaller than the opening 3 in a transverse direction of the main housing, i.e. the diameter of the separate housing 21 is smaller than the diameter of the opening 3. In some embodiments, the diameter of the separate housing 21 is about 20% to about 30%, e.g. about 25%, of the diameter of the opening 3.

[0093] In some embodiments, the first reflector 14 is a convex reflector and/or the second reflector 12 is a substantially parabolic reflector, e.g. a parabolic mirror or the like. Such a suitable parabolic reflector can produce light rays substantially parallel with the longitudinal direction L. Accordingly, the light source 11, the first reflector 14, and the separate secondary light source 20 are arranged aligned in the longitudinal direction L substantially centrally at the front opening 3.

[0094] The presence and location of the first reflector 14 will produce a ‘dark’ or ‘blind’ area or spot in the opening 3. However, the effect of this is increasingly reduced with increasing distance from the lighting device 1. Additionally, placing the separate secondary light source 20 adjacent to the first reflector 14 and further in the longitudinal direction L than the first reflector 14 (i.e. the separate secondary light source 20 is located closer to the opening 3 than the first reflector 14) enables the provision of the separate secondary light source 20 without further detriment as it does not block emitted light more than what the first reflector 14 already would do alone. The first 11 and the secondary 20 light source are controlled by at least one control unit or similar (see e.g. 7 in FIGS. 1 and 3) e.g. independently. This enables more diverse light effects using only a single lighting device. The first 11 and the secondary 20 light source can also be controlled to produce interesting and unique light effects. Power and control signals may e.g. be provided to the separate secondary light source 20 and/or the actuator 9 via a suitable cable located along one of the ribs 15.

[0095] In some embodiments, the first light source 11 is a white LED light source, e.g. comprising a plurality of LEDs e.g. in the form of an LED array. Alternatively, the first light source 11 may be a coloured or colour-changing LED light source. For white LED light sources, the colour of the emitted light may e.g. be changed by (optional) use of a (potentially interchangeable) colour filter, as generally known.

[0096] In some embodiments, the separate secondary lights source 20 is an LED array, e.g. white, colour, or colour-changing.

[0097] In some embodiments, the separate secondary light source 20 is a strobe light, a stroboscopic light, or is programmed to function as a strobe or stroboscopic light.

[0098] The lighting device 1 may also comprise so-called gobos. A gobo is a physical template that can be placed in front of the light source of the lighting device, or at least in the light propagation path, in order to control the shape of the emitted light beam. A gobo can be conformed as a piece of material with patterned holes through which light can pass, so that the light beam exiting the lighting device forms a desired pattern. A lighting device may comprise a plurality of gobos, each corresponding to a different pattern. A user may select a certain gobo e.g. by using a user interface of the lighting device 1. Thereafter, the control unit will cause the selected gobo to be brought in front of the light source or otherwise in the light propagation path, so that a desired pattern is obtained. The lighting device 1 may alternatively or in addition also comprise one or more controllable colour filters to enable changing the colour of the emitted light.

[0099] As an alternative, the second reflector 12 is moved by the actuator 9 in relation to the first reflector 14. In such embodiments, the actuator 9 is typically located elsewhere, e.g. between the first light source 11 and the second reflector 12. In some such further embodiments, the second reflector may be moved together with the first light source in a fixed relationship (i.e. they move fixedly together) and the reflectors are moved in relation to the first light source. However, moving the first reflector 14 by the actuator 9 in relation to the second reflector 12 will typically enable a simpler design amongst other.

[0100] FIGS. 4 and 5 each schematically illustrate a cross-sectional view of an actuator 9 for moving the first reflector 14 (where the first reflector 14 is illustrated at two different locations in the Figures). The cross-sectional views both illustrate an embodiment, where the actuator 9 is located between the first reflector 14 and the separate second light source 20/the separate housing 21 (if the lighting devices comprises such) or at least located on the side of the first reflector 14 being furthest away from the first light source (see e.g. 11 in FIG. 3). Further shown, is a transparent front cover 22, e.g. arranged in the main housing (not shown, see e.g. 2 in FIG. 3) within a front opening (not shown, see e.g. 3 in FIG. 3), where the actuator 9 is held in place by or at the front cover 22. In some embodiments, the separate second light source 20/the separate housing 21 may be attached to the actuator 9 and/or may hold the actuator 9 and first reflector 14 in place in relation to the housing of the lighting device. In some embodiments, the transparent front cover 22 is secured directly to the main housing. Alternatively, it may be secure to at least some of the radially extending ribs (see e.g. 15 in FIG. 2) if present.

[0101] Different types of actuators may be used as is generally known. The actuator 9 may e.g. be a (one axis) linear actuator e.g. comprising a stepper motor or the like. The actuator 9 may e.g. (as also shown) comprise a spindle, a spindle shaft, or the like 25 connected with a controlling drive unit 9, e.g. a stepper motor or the like, where movement of the spindle, etc. 25 causes the movement of the first reflector 14.

[0102] In FIG. 4, the actuator 9 has moved the first reflector 14 linearly in a predetermined direction away from the front cover 22 and the separate second light source 20, whereas in FIG. 5 the first reflector 14 has been moved linearly closer to the front cover 22 and the separate second light source 20. In an embodiment such as the one shown in FIG. 3 or corresponding embodiments, the first reflector 14 would be closer to the second reflector 12 in the position shown in FIG. 4 than in the position shown in FIG. 5. The actuator 9 and overall design of the lighting device 1 may allow for numerous positions of the first reflector 14 in relation to the second reflector (not shown, see e.g. 12 in FIG. 3). The travelled distance of the first reflector 14 between the situation of FIG. 4 and FIG. 5 is indicated by the double arrow 26.

[0103] In the illustrated situation of FIG. 5 it can be seen that one end (the one closest to the first reflector 14) of the spindle, etc. 25 is very near or almost touches the (non-reflective) surface of the first reflector 14.

[0104] To allow for an increase of the possible travel distance 26 without increasing the overall length of the arrangement, the length of the spindle, etc. 25 could be increased and the first reflector 14 could comprise an opening allowing the spindle, etc. 25 to extend through it. An exemplary embodiment of such an arrangement (comprising a cap unit or similar) is illustrated in FIGS. 8C-8F.

[0105] FIGS. 6A, 6B, and 6C schematically illustrate the effect movement of the first reflector 14 can have on light emitted by the lighting device (not shown, see e.g. 1 in FIGS. 1 and 3) as disclosed herein according to some embodiments. In the illustrated embodiment, the second reflector 12 has a reflector opening 13 through which light from the first light source enters before at least a portion of it is received by the first reflector 14. The first reflector 14 reflects at least a portion of the received light to the second reflector 12. The second reflector 12 receives at least a portion of light reflected by the first reflector 14 and reflects at least a portion of the received light out through a front opening 3 of the lighting device. As disclosed herein, an actuator (not shown, see e.g. 9 in FIGS. 3, 4 and 5) can move the first reflector 14 or the second reflector 12 in relation to each other such that the distance between the first reflector 14 and the second reflector 12 increases or decreases. Exemplary paths of light reflected from the second reflector 12 are indicated with dotted lines and the overall visual appearance of the beam is indicated with dashed lines. Only a few representative paths of light are shown so as to aid the understanding without crowding the illustration.

[0106] In FIG. 6A, the first reflector 14 and the second reflector 12 are furthest (for the specific embodiment) from each other. The beam emitted from the lighting device is visually collimated out to a predetermined first distance (as determined by the specific configuration and/or design of the lighting device), which may be e.g. about 30 meters or more, after which distance the beam spreads and appears diffused.

[0107] In FIG. 6B, the first reflector 14 is closer to the second reflector 12 than in FIG. 6A. The beam emitted from the lighting device is visually collimated out to a predetermined second distance from the lighting device, which is shorter than the distance in FIG. 6A, e.g. about 8-10 meters. At and from a distance from the lighting device greater than the predetermined second distance, the beam spreads and appears diffused.

[0108] In FIG. 6C, the first reflector 14 is even closer to the second reflector 12 and is at an extremum, where the beam emitted from the lighting device spreads out immediately upon being emitted from the lighting device.

[0109] The distance out to which the beam is visually collimated may be changed dynamically, as the actuator 9 dynamically can move the first reflector 14 or the second reflector 12 in relation to the other, while a beam is being emitted from the lighting device thereby controllably setting a visual collimation distance and/or creating interesting effects. For instance, changing the distance of the first reflector 14 or the second reflector 12 in relation to the other in the order of FIG. 6C to 6A can readily provide a zoom effect of the emitted light beam. Depending on the desired effect, the visual collimation may also be used as a static effect.

[0110] The exemplary illustrated positions of the first reflector 14 and the second reflector 12 in relation to each other shown in FIGS. 6A, 6B, and 6C are only illustrative and the relational positions, which achieve the desired lighting effect, will vary depending on a variety of design choices such as e.g. the shape of the first reflector 14 and the shape of the second reflector 12.

[0111] FIG. 7 is a photograph of a beam that is visually collimated out to a predetermined distance after which it spread out. The beam is produced by a lighting device corresponding to an embodiment as disclosed herein. In the photograph, the beam is emitted by a lighting device at the right side of the Figure and is visually collimated out to a predetermined distance of about 6 meters from the lighting device.

[0112] FIGS. 8A-8F schematically illustrate different aspects of further exemplary embodiments of a lighting device.

[0113] Illustrated in FIG. 8A is an aperture fitting or the like 13A configured to fit into the reflector opening (not shown; see e.g. 13 in FIGS. 3, 8B, 8D and 8F) of the second reflector (not shown; see e.g. 12 elsewhere). The aperture fitting or the like 13A efficiently acts as a shield, barrier, or blocker for stray light from the first light source (see e.g. 11 elsewhere) and thereby efficiently prevent stray light from passing through the reflector opening of the second reflector, past the edge of the first reflector, and outside the housing of the lighting device at angles (significantly) bigger than the otherwise produced collimated or visually collimated light beam exiting the housing. Such stray light (or ‘false’ light) outside the housing of the lighting device would reduce the perception or impression for observers of contrast between the produced collimated or visually collimated light beam and its surroundings thereby detrimentally reducing the perception or impression of the light intensity of the produced collimated or visually collimated light beam.

[0114] When the first and the second reflector is far or furthest apart (see e.g. FIGS. 3 and 8F) there would otherwise be ample room for such stray light to exit the housing at larger angles.

[0115] As an alternative to the illustrated aperture fitting or the like 13A, the aperture fitting could e.g. be a disc with an (e.g. central) opening but it would reduce stray light less than the illustrated embodiment.

[0116] In the shown embodiment, the aperture fitting or the like 13A comprises a disc or other part shaped (e.g. being circular) to fit the reflector opening and an aperture configured to allow light from the first light source to pass through the second reflector (towards the first reflector). The aperture of the aperture fitting or the like 13A may e.g. be a hollow cylinder e.g. located centrally in the disc or other part of the fitting 13A and/or at least being optically aligned with the first light source (see e.g. 11 elsewhere).

[0117] In some further embodiments, an inner surface, or at least a part thereof, of the aperture fitting or the like 13A comprises enhanced or increased anti-reflective properties e.g. due to being coated or covered in an anti-reflective material and/or due to comprising an exterior providing anti-reflective properties, e.g. comprising a suitable embossed or debossed pattern such as a number of grooves (as illustrated in FIG. 8A). FIGS. 8B (and 8D and 8F) illustrates the aperture fitting or the like 13A fitting in a reflector opening 13 of a second reflector 12.

[0118] Illustrated in FIG. 8C is a first reflector 14 and a spindle system for an actuator (see e.g. 9 elsewhere) for moving the first reflector 14 in relation to a second reflector (see e.g. 12 elsewhere) all as disclosed herein. The spindle system comprises a spindle, a spindle shaft, or the like 25 as disclosed herein.

[0119] In the illustrated and corresponding embodiments, the first reflector 14 further comprises a cap unit, receptacle, or the like 27 arranged centrally in and through the first reflector 14 where the cap unit or the like 27 is configured to receive at least a part of the spindle, etc. 25 (see e.g. also 25 in FIGS. 4 and 5) of the actuator moving the first reflector 14 as disclosed herein. As mentioned, this allows for a greater travel or movement distance of the first reflector 14 (as the spindle, etc. can move through the first reflector 14) without increasing the overall length or size of the actuator or movement arrangement.

[0120] In some further embodiments, an outer surface, or at least a part thereof, of the cap unit 27 comprises enhanced or increased reflective properties e.g. due to being coated or covered in a reflective material and/or due to comprising an exterior providing reflective properties.

[0121] Illustrated in FIG. 8D is a first reflector 14 comprising a cap unit or the like 27 and a second reflector 12 comprising an aperture fitting or the like 13A all according to FIGS. 8A-C.

[0122] FIGS. 8E and 8F illustrates the first and second reflectors 14, 12 of FIGS. 8C and 8D but in another situation or configuration where the first and the second reflectors 14, 12 have been moved further apart (FIGS. 8E and 8F) compared to the situation or configuration of FIGS. 8C and 8D. FIGS. 8C and 8D correspond to the situation of FIG. 4 while FIGS. 8E and 8F correspond to the situation of FIG. 5. In FIGS. 8E and 8F it can be seen that the spindle, etc. 25 passes through the first reflector 14 and is received by the cap unit or the like 27.

[0123] In FIG. 8D it can be seen that (for the illustrated and corresponding embodiments) the cap unit or the like 27 even enters into the aperture fitting or the like 13A when the first and second reflectors 14, 12 are close together.

[0124] Some preferred embodiments have been shown in the foregoing, but it should be stressed that the invention is not limited to these, but may be embodied in other ways within the subject matter defined in the claims.

[0125] In the claims enumerating several features, some or all of these features may be embodied by one and the same element, component or item. The mere fact that certain measures are recited in mutually different dependent claims or described in different embodiments does not indicate that a combination of these measures cannot be used to advantage.

[0126] It should be emphasized that the term “comprises/comprising” when used in this specification is taken to specify the presence of stated features, elements, steps or components but does not preclude the presence or addition of one or more other features, elements, steps, components or groups thereof.

LIST OF REFERENCES

[0127] 1 Lighting device [0128] 2 Housing [0129] 3 Front opening [0130] 4 Support arrangement [0131] 5 Base [0132] 6 Movable supporting element [0133] 7 Control units [0134] 8 User interface [0135] 9 Actuator [0136] 11 First light source [0137] 12 Second reflector [0138] 13 Reflector opening [0139] 13A Aperture fitting [0140] 14 First reflector [0141] 15 Radially extending ribs [0142] 20 Secondary light source [0143] 21 Separate housing [0144] 22 Front cover [0145] 25 Spindle, etc. [0146] 26 Travelled distance [0147] 27 Cap unit [0148] L Longitudinal direction [0149] X First axis [0150] Y Second axis