WO2019151921A1 - Dispositif de commande de lumière pour fixation sélective à des dispositifs réflecteurs - Google Patents

Dispositif de commande de lumière pour fixation sélective à des dispositifs réflecteurs Download PDF

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Publication number
WO2019151921A1
WO2019151921A1 PCT/SE2019/050043 SE2019050043W WO2019151921A1 WO 2019151921 A1 WO2019151921 A1 WO 2019151921A1 SE 2019050043 W SE2019050043 W SE 2019050043W WO 2019151921 A1 WO2019151921 A1 WO 2019151921A1
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WO
WIPO (PCT)
Prior art keywords
light controlling
reflector
light
controlling device
end portion
Prior art date
Application number
PCT/SE2019/050043
Other languages
English (en)
Inventor
Johan Werner
Göran MARÉN
Original Assignee
Profoto Aktiebolag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Profoto Aktiebolag filed Critical Profoto Aktiebolag
Publication of WO2019151921A1 publication Critical patent/WO2019151921A1/fr

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio

Definitions

  • the invention relates to a light controlling device for reflector devices, the light controlling device being selectively attachable to such a reflector device for auxiliary control of light output according to the appended claims.
  • Incoming light is of uttermost importance during photographing as said incoming light aimed at the motive greatly affects the end result of the photo being taken.
  • Such incoming light affects the motive with regards to several characteristics of said light, such as incoming direction, the size of the light source, the amount of light shining on the motive and other additional light sources affecting the motive as some examples. It is therefore often desirable for professional photographers to use light controlling devices such as light flashes, reflectors and other light controlling devices to achieve proper light conditions when taking
  • Two such reflector devices which are commonly used are light controlling umbrellas and so called light boxes, both having reflective interior surfaces, wherein a light flash or similar is positioned to flash light towards such a reflective interior, which reflects the light towards to motive. Due to the light being reflected by means of the reflective inner surface of such devices, the flash of light will be perceived as a larger source of light than the initial flash of light from the light flash itself. This is often beneficial as a larger light source provides softer shadows which are sought after for many types of photographs, such as portrait photos for example. There may however be desired to control such light even further by means of temporarily attaching an auxiliary light controlling device to the aperture of such reflector devices.
  • Such auxiliary control devices may provide different types of light controlling filters to the flow of light to provide different effects to said light, such as diffraction, diffusion, re-direction, pigmentation or other.
  • a single reflector device may be used for a wider range of operation in a very cost effective manner.
  • Such filters and the devices to which they are part of may however be time consuming and inconvenient to attach and remove, and in some cases require a reflector device having a special design so as to receive such a filter device.
  • Commonly used auxiliary filter devices use attachments means which are simple to use, such as Velcro ⁇ fastening means or coupling of elements such as rings and hooks or similar.
  • a light controlling device for reflector devices which are used for photographic applications and comprises an aperture
  • the light controlling device may comprise a light controlling cover element, a side wall, arranged with a first end at a circumference of said cover element, wherein the side wall may comprise a circumferential end portion, arranged at a second end of said side wall.
  • the light controlling device may be arranged to be selectively coupled to an aperture of a reflector device.
  • the circumferential end portion may comprise a resilient material, and the light controlling cover element may be arranged to be positioned at a front side of the aperture of a reflector device, wherein at least the circumferential end portion is arranged to be flexibly arranged at a back side of said aperture so as to hold the light controlling cover element at the front side of the aperture.
  • a light controlling device which is very fast and easy to use, as the resilient material may be stretched and moved over the circumference of the aperture of the reflector device and then contract back to its relaxed state, and with said contraction hold the cover element in its correct position.
  • Such a device is hence both fast and easy to use and may therefore provide a modification of the light provided by a reflector device in a very efficient manner without the need for long pauses in photography operations performed.
  • the term reflector device is meant to be seen as such devices commonly used in a photographic studio, and may be of various designs such as hard shell reflectors, soft reflectors (commonly called umbrellas), light boxes, which may be perceived similar to umbrellas but having a more polygonal shape, or other.
  • the term reflector device When using the term reflector device within the disclosure, it is however to be read as a device having a light source and some sort light shaping/controlling reflector, like that of an umbrella, a cone, truncated cone, a cylinder or other.
  • a light source When relating to an aperture of such a device it is then to be viewed as an opening of such a device wherefrom light is provided, wherein a circumference of such an aperture have some sort of side walls.
  • the light controlling device disclosed herein is able to be coupled to such devices which have such side walls with a circumference which is the same size as the aperture or smaller, at a distance from the aperture, in a direction opposite to the direction the light is being provided.
  • the resilient material of the circumferential end portion may thus be able to change the size of the circumferential length of said circumferential end portion, wherein it may be expanded to be moved over and around the circumference of the aperture, and then retract in length to grip the side walls of such a reflector device.
  • the light controlling device may be used for a range of sizes and shapes of reflector devices which provides a very versatile and
  • the resilient material may be circumferentially arranged, so as to provide flexibility to the circumferential end portion throughout the material of said circumferential end portion.
  • the resilient material may also be provided by means of a plurality of resilient elements spread out over the circumference of the circumferential end portion, wherein such elements provide flexibility for spread out parts of the circumferential end portion.
  • such an inner surface of a reflector device may utilize its entire inner surface for reflection of light. This is beneficial as it in turn may be utilized to manufacture reflector devices in a more cost effective manner, as their designs does not need to include additional portions and/or parts, arranged to receive a special type of auxiliary light controlling devices having special requirements with regard to fitting of said two types of devices.
  • the side wall comprises a resilient material.
  • the side walls also comprising a resilient material provide an even more flexible and easy to use device, as the side walls are also stretchable.
  • the light controlling device may be usable for an even wider range of sizes and shapes of reflector devices as a larger portion of the light controlling device may be stretched and moved over an aperture, which may provide an advantage for such a device.
  • such side walls may also assist in fitting snuggly around an aperture wherein the risk of light escaping is lowered and the fit between the two devices is being enhanced.
  • the resilient material of the side wall may also be circumferentially arranged, so as to provide flexibility to the side wall throughout the material of said side wall.
  • the resilient material may also be provided by means of a plurality of resilient elements spread out over an area of the side wall, wherein such elements provide flexibility for spread out parts of the side wall.
  • the resilient material of the side wall may be more stretchable than the resilient material of the circumferential end portion.
  • the side wall and the circumferential end portion may be stretched out over an edge of an aperture so that the comparatively more rigid circumferential end portion may retract with more force and fit tightly against an outer surface of a side wall adjacent the aperture of a reflector device.
  • the side wall being more stretchable may then allow for said side wall to the stretched over a larger area without having its mechanical properties degenerated due to a prolonged stretched out state.
  • This provides the benefit of allowing the light controlling device to be used with reflector devices having an aperture which has a larger surface than a surface area of the light controlling cover element.
  • This may be advantageous as the light controlling device may be centrically positioned to such an aperture wherein the side wall may be stretched out to close a gap between a smaller circumference of the cover element and a larger circumference of the aperture.
  • the circumferential end portion having a harder/larger/stronger spring back will thus still allow such a light controlling device to be fitted snuggly to a larger sized reflector device.
  • the side wall and the circumferential end portion may comprise a fabric-type material.
  • the side wall and circumferential end portion may easily be used in combination with both hard cover reflector devices and soft cover reflector devices or other in an east to use manner.
  • a fabric type material may provide a smooth fit towards a plurality of devices and surfaces, and may be pleasant to work with over a long period of time as well.
  • Using a fabric-type material is also beneficial in that it is easy to both manufacture and perform maintenance work to.
  • the parts of the light controlling device comprising fabric-type material may be attached to each other by means of easy and common operations such as stitching, gluing or other, such a device is cost effective to manufacture and also easy to perform simple maintenance to if needed, as no special tools and/or methods are needed.
  • At least parts of an inner surface of the circumferential end portion comprises a high friction material.
  • an inner surface of the circumferential end portion may provide a better grip to an outer surface of a reflector and/or a reflector device to which it is arranged.
  • the light controlling device is arranged to, as an example, a metallic reflector having an outer surface which may exhibit non-stick properties, such a high friction material may provide a better grip towards such a surface.
  • a reflector to which the light controlling device is to be arranged comprises an outer surface of the reflector having a low to no angle, wherein such angle is defined by an angle of extension of said outer surface, compared to a normal of a plane defined by the aperture.
  • a reflector having for example a uniform cylindrical outer surface may still be provided with such alight controlling device as the high friction inner surface may provide a better towards such a surface.
  • the high friction material may be provided to the circumferential end portion by means of incorporating such a material in the circumferential end portion itself when manufactured, or by means of an additional material in the form of a coating or similar.
  • An adhesive may for example be arranged at said inner surface so as to provide a good grip from said surface in an easy and cost effective way.
  • the circumferential end portion of the side wall may further comprise an adjustment mechanism, which mechanism controls a circumferential length of said circumferential end portion.
  • Such an adjustment mechanism may be a drawstring, running through a channel, which channel may be positioned at the circumferential end portion.
  • the drawstring may further comprise a locking device so as to be able to lock the draw string from being adjusted when closed, and allow such movement when opened.
  • the adjustment mechanism may also be other known types of commonly used adjustment and fasteners such as strings arranged at a distance from each other and can tied together, Velcro arranged at a distance and being attachable to each other or other.
  • Such adjustment mechanism may be used to further enhance the compatibility of the light controlling device with a reflector device, as the adjustment mechanism may be used to further tighten a fit between the two if the two vary in size and/or shape to a large degree.
  • Such an adjustment mechanism may also be utilized so as to act as a locking system of sorts, wherein the fitting of the two devices together is more secure and reliable if the adjustment mechanism is tightened, even if at least the
  • the light controlling cover element may be a grid of fabric-type material.
  • This provides a light controlling device which provides a more laminar light flow, where less light escapes the reflector at angles, which angles are angles with respect to a centre line of the aperture of the reflector device, directed away from said device, perpendicular to an area of the aperture.
  • the entirety of the light controlling device is made of a more or less soft material of fabric-type.
  • Such embodiments may thus be cost effective to manufacture, fast and easy to assemble, and also be very easy with regards to storage, as the device as a whole may be folded and hence compressed in volume requiring less space for said storage.
  • the light controlling cover element may be a diffusor.
  • This provides a light controlling device which provides a softer light flow, where the light is diffused by said diffusor in a very fast and easy manner.
  • diffusors may be made in various ways, such as a piece of white cloth for example. Polymer films or diffusing lenses may also be used to spread the light in a desired manner.
  • the light controlling cover element may be a pigmented filter.
  • the concept of the disclosure may be used for adding different colours to a light source used for photography in a fast and easy manner.
  • Fig. 1 shows a light controlling device arranged to a reflector device in a perspective view according to an embodiment
  • Fig. 2a shows a light controlling device arranged to a reflector device in a side view according to an embodiment
  • Fig. 2b shows a light controlling device arranged to a reflector device in a side view according to an embodiment
  • Fig. 2c shows a light controlling device arranged to a reflector device in a side view according to an embodiment
  • Fig. 2d shows a light controlling device arranged to a reflector device in a side view according to an embodiment
  • Fig. 3a shows a light controlling device in a perspective view according to an embodiment
  • Fig. 3b shows a light controlling device in a perspective view according to an embodiment
  • Fig. 3c shows a light controlling device in a perspective view according to an embodiment.
  • Fig. 1 shows a light controlling device 1 arranged to a reflector device 3 in a perspective view according to an embodiment.
  • the reflector device 3 may, as depicted in fig. 1, comprise a base element 5 comprising attachment means 7 for a stand of some sort, and a reflector 9 extending from said base element 5.
  • the reflector 9 in turn comprises an aperture 11 to which the light controlling device 1 may be arranged.
  • the reflector 9 of the reflector device 3 may be a soft reflector, a hard shell reflector, a light box or similar.
  • the light controlling device 1 may be arranged to a variety of such reflector devices 3, wherein the only requirement being that a size of the aperture 11 is larger and/or the same size as a cross section of the reflector 9, which cross section is taken at a distance from the aperture 11, in the direction towards the base element 5 starting from said aperture 11.
  • the light controlling device 1 may comprise a light controlling cover element 13, a side wall 15, arranged with a first end 17 at a circumference 19 of said cover element 13.
  • the side wall 15 may further comprise a circumferential end portion 21, arranged at a second end 23 of said side wall 15.
  • the light controlling device 1 is then arranged to be selectively coupled to the aperture 11 of the reflector device 3 so as to provide the effect of the light controlling cover element 13 to light reflected by the reflector 9.
  • a light source (not shown in the figures) may be provided to the interior of the reflector 9, wherein light from the light source is reflected by means of the reflector 9 and thus being directed to shine through the aperture 11 and the light controlling cover element 13.
  • the circumferential end portion 21 may comprise a resilient material.
  • the light controlling cover element 13 may then be arranged at a front side 25 of the aperture 11, wherein at least the circumferential end portion 21 may be arranged to be flexibly arranged at a back side 27 of said aperture 11 so as to hold the light controlling cover element 13 at the front side 25 of the aperture.
  • the phrase back side 27 of the aperture 11 is to be viewed as positioned behind the aperture 11, as in not in the direction light is provided from said aperture 11 out to a desired environment.
  • the back side 27 of the aperture 11 is shown in fig.
  • At least the circumferential end portion 21 may thus be stretched out so as to move said circumferential end portion 21 over and past the aperture 11 of the reflector 9, wherein the resilient material of the circumferential end portion 21 then may flex back and grip an outer surface 29 of the reflector 9 by means of its contraction.
  • a resilient material may be provided to the circumferential end portion 21 by means of an additional element of such a material.
  • Such an additional element may, for example, be a rubber band or similar.
  • the resilient material may also be provided to the circumferential end portion 21 by means of it being incorporated in the material of the circumferential end portion 21 itself.
  • the circumferential end portion 21 may be manufactured of a fabric-type material.
  • a fabric-type material may thus be a resilient fabric wherein the circumferential end portion 21 may be resilient and elastic due to the inherent material characteristics of said material.
  • additional resilient elements may also be provided to the circumferential end portion 21 in a simplistic manner.
  • a rubber band or similar may easily be sewn in to the circumferential end portion 21 for example.
  • the side wall 15 of the light controlling device 1 may also comprise a fabric-type material, wherein both the side 15 wall and the circumferential end portion 21 may be easy and cost effective to manufacture and assemble. If the same type of fabric is used for both the side wall 15 and the circumferential end portion 21, they may of course be made as a single piece, wherein the circumferential end portion 21 may be provided with an additional resilient material if said fabric does not provide resilient characteristics.
  • a very fast and easy to use way of assembly of such an arrangement is provided. Furthermore, as functionality of such a light controlling device 1 is not reliant on specially designed attachment means, arranged at the reflector 9, such reflectors 9 may be manufactured without special attention to such details. Even further, utilizing a light controlling device 1 according to the disclosure also provides the benefit of being able to use the same light controlling device 1 on a wide range of reflectors 9 with respect to size, design and shape, wherein a more multi-functional light controlling device 1 is provided.
  • Fig. 2a shows a light controlling device 1 arranged to a reflector device 3 in a side view according to an embodiment.
  • the embodiment as shown in fig. 2a may exhibit several similar features and properties as the embodiment depicted in fig. 1.
  • the reflector 9 of the reflector device 3 according to fig. 2a may have a different design, shape and outer surface 15 compared to the one shown in fig. 1.
  • the light controlling device 1 may be used effectively in combination with a plurality of reflectors 9 having varying designs, shapes and sizes.
  • the reflector 9 depicted in fig. 2a may be perceived as either a hard reflector or a soft reflector.
  • the reflector 9 may further be perceived as having a rotationally symmetrical shape, and thus having a circular aperture 11.
  • the light controlling cover element 13 may for such a reflector 9 also comprise a circular shape, so as to fit to the aperture in a desirable manner.
  • the side wall 15 of the light controlling device 1 may comprise a resilient material, wherein both the side wall 15 and the circumferential end portion 21 may follow the shape of the profile of the outer surface 29 of the reflector 9. Both the side wall 15 and the circumferential end portion 21 may thus also hug the reflector 9 and thus hold the light controlling device 1 in place.
  • Fig. 2b shows a light controlling device 1 arranged to a reflector device 3 in a side view according to an embodiment.
  • the embodiments of the light controlling device 1 and the reflector device 3 as shown in fig. 2b may be perceived as similar to the ones shown in fig. 2a.
  • a discrepancy in size between said two devices 1, 3 is present.
  • the resilient material of the side wall 15 may be more stretchable than the resilient material of the circumferential end portion 21.
  • the more stretchable material of the side wall 15 may be stretched out radially over a gap 31 formed between the light controlling cover element 13 and the circumference of the aperture 11.
  • the side wall 15 may then follow the rounded shape of the outer surface 29 of the reflector 9 wherein the, to a lesser degree but still flexible, circumferential end portion 21 will firmly grip said outer surface 29 so as to hold the light controlling device 1 in place to the reflector device 3.
  • the side wall 15 covering the gap 31 formed between the light controlling cover element 13 and the circumference of the aperture 11 may be advantageous in its own right as the light controlling cover element 13 may not control light outside of its circumference 19, wherein such light may be blocked out by the side wall 15 covering said gap 31.
  • this also provides the possibility of using the light controlling device 1 for a wider range of different sized reflectors 9. This may be very cost effective for a photographer who may have a plurality of reflectors 9 having different sizes, but whom may only need to use a single light controlling device 1 according to such an embodiment for said plurality of reflectors 9.
  • Fig. 2c shows a light controlling device 1 arranged to a reflector device 3 in a side view according to an embodiment.
  • the reflector device 3 depicted may be a light box, wherein the shown side view only shows one side of said light box.
  • the light box may be perceived as having a pyramid shape with a square base, wherein said square base corresponds to a likewise square aperture 11.
  • the light controlling device 1 according to this embodiment may thus comprise a similarly square light controlling cover element 13.
  • the light controlling cover element 13 and an aperture 11 of a reflector device 3 to which it is being arranged not necessarily have to have the exact same shape (as partly explained with reference to fig. 2b), but depending on the situation at hand, a round light controlling cover element 13 may be arranged to a square (or other) shaped aperture 11 and vice versa. This is possible with better results compared to prior art solutions due to the inventive concept according to the disclosure, wherein the light controlling device 1 comprises a resilient material and is designed to be arranged at an outer surface 29 of a reflector 9 as described herein.
  • Fig. 2d shows a light controlling device 1 arranged to a reflector device 3 in a side view according to an embodiment.
  • the reflector device 3 as depicted in fig. 2d may be provided with a partly cylindrically shaped reflector 9, wherein the aperture 11 and parts of said reflector 9 may be viewed as an end portion of a cylinder.
  • the light controlling device 1 according to this embodiment may not differ in any substantial manner compared to the previously described embodiments, with the exception that the embodiment depicted in fig.
  • the adjustment mechanism 33 may be comprised as part of the circumferential end portion 21 of the side wall 15, which adjustment mechanism 33 may be used to control a circumferential length of said circumferential end portion 21.
  • Such an adjustment mechanism 33 may be, as depicted in fig. 2d, a drawstring 35, arranged in a channel 37 which is provided to the circumferential end portion 21.
  • the drawstring 35 may then further comprise a locking device 39 which may be opened or closed so as to allow the drawstring 35 to move through said locking device 39 or be locked from such movement within the locking device 39.
  • the circumferential length of said circumferential end portion 21 may be controlled in an easy manner wherein the locking device 39 may lock said circumferential length to selectively restrict flexibility of the material of the circumferential end portion 21.
  • the reflector 9 to which the light controlling device 1 is arranged exhibits a large disparity in size, comprises a highly frictionless material, has a low to none angular extending side wall 15 from the aperture 11 or similar.
  • Such an adjustment mechanism 33 may provide an advantage to the light controlling device 1 nonetheless, as the adjustment mechanism 33 provides a very secure and reliable attachment to reflector devices 3 regardless of the design of a reflector 9.
  • Such an adjustment mechanism 33 may thus provide the benefit of securing a light controlling device 1 to a reflector 9 in a reliable manner, regardless of the design of a reflector device 3. It may however be especially beneficial for a reflector 9 having a design as depicted in fig.
  • An adjustment mechanism 33 may thus greatly alleviate such a risk by means of the added gripping between the two ingoing surfaces provided by fixating the circumferential length of the circumferential end portion 21 by means of the adjustment mechanism 33.
  • the side wall 15 and the circumferential end portion 21 may for example both comprise a fabric-type material.
  • the light controlling cover element 13 may also comprise such a fabric-type material depending on the type of light control being provided.
  • the device 1 may be easy to store as the fabric-type material may allow the entire device 1 to be folded to a more compact form when not being used.
  • a combination of resilient materials and more rigid materials may also be used without deviating from the scope of protection according to the disclosure and the appended claims.
  • all the embodiments depicted in fig. 2a-2d, and other additional ones, may be modified to further elevate the grip of the circumferential end portion 21 gripping a reflector 9 of a reflector device 3.
  • One such embodiment exhibiting an enhanced gripping may be achieved by means of having at least parts of an inner surface of the circumferential end portion 21 comprise a high friction material.
  • a high friction material may be incorporated in the design and/or material of choice of said circumferential end portion 21, wherein the material characteristics and/or the structure of the surface of said end portion 21 may provide high friction towards an adjacent surface to which it is arranged.
  • High friction may also be provided by means of an additionally provided material having such characteristics, like for example a rubber-type material.
  • Such rubber-type material may be provided to the inner surface in the form of a surface area being covered with such material, or a plurality of projecting dots spread out over said inner surface or other.
  • high friction may also be provided by means of providing said inner surface of the circumferential end portion 21 with a coating or similar.
  • an adhesive or glue or similar may be arranged on said inner surface, wherein said adhesive provides a sticky surface but does not bind or harden so as to fixedly attach the circumferential end portion 21 towards an adjacent outer surface 29 of a reflector 9.
  • the side wall 15 may also comprise such a high friction material and/or at least one additional element having high friction, similarly to the circumferential end portion 21.
  • the light controlling cover element 13 may be any type of cover element providing an auxiliary light controlling effect to light flowing from an aperture 9 of a reflector device 3. Some examples of such light controlling cover elements 13 will herein be described with reference to, and shown in, figs. 3a-3c.
  • Fig. 3a shows a light controlling device 1 in a perspective view according to an embodiment.
  • the embodiment depicted in fig. 3a is a light controlling device 1, wherein the light controlling cover element 13 may be a grid 13' of fabric-type material.
  • the grid 13' may comprise a plurality of horizontal partition walls 41, and a plurality of vertical partition walls 43, wherein said partition walls 41, 43 may be arranged in a grid arrangement so as to cover the entirety of the light controlling cover element 13.
  • Said partition walls 41, 43 may further have a width 45 which extends perpendicular to the aperture of a reflector to which such a light controlling device 1 is being arranged.
  • An object of such a light controlling cover element 13 is to provide an auxiliary control of light from a reflector or similar, in that the grid arrangement minimizes an angular spread of light from an adjacent aperture.
  • a grid 13' may comprise a non- reflective material so at to not reflect light at such angles, but allow for more laminar light flow to move through individual cells 47 defined by the partition walls 41, 43 arranged in such a grid type fashion.
  • the remaining parts of the light controlling device 1 may, as should be obvious, exhibit the various features and their accompanied technical effects, each on their own or in combination of a plurality of said features.
  • Fig. 3b shows a light controlling device 1 in a perspective view according to an embodiment.
  • the embodiment depicted in fig. 3b is a light controlling device 1, wherein the light controlling cover element 13 may be a diffusor 13”.
  • a diffusor 13 is mainly used to diffuse light shining out from an adjacent aperture 11 of a reflector 9. Diffusors are commonly used for photography if a softer light is desired.
  • the diffusor 13” depicted in fig. 3b may be a sheet of white fabric or similar, but other types of materials and/or element which may provide a diffusion effect may also be used without deviating from the concept of the disclosure.
  • Fig. 3c shows a light controlling device 1 in a perspective view according to an embodiment.
  • the embodiment depicted in fig. 3b is a light controlling device 1, wherein the light controlling cover element 13 may be a pigmented filter 13'”.
  • the auxiliary control of out-coming light from a reflector may be filtered so as to provide a colour of choice to said light.
  • a pigmented filter 13' may for example be a sheet of polymeric material, which is easy to provide with pigment so as to achieve a desired colour to a light.
  • the embodiments according to figs. 3a-3c are meant to be illustrative in nature, so as to show how the inventive concept of the resilient material of the light controlling device, which is arranged at an outer side of a reflector, may be used for a wide variety of purposes. It should thus be emphasized that the light controlling cover may be modified to provide further additional effects with respect to light control, wherein the examples shown in figs. 3a-3c are not the only possible embodiments of a light controlling cover element of a light controlling device according to the disclosure.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

L'invention concerne un dispositif de commande de lumière (1) pour des dispositifs réflecteurs (3) utilisés pour des applications photographiques et comprenant une ouverture (11). Le dispositif de commande de lumière (1) comprend un élément formant couvercle de commande de lumière (13), une paroi latérale (15), agencée avec une première extrémité (17) au niveau d'une circonférence (19) dudit élément formant couvercle (13). La paroi latérale (15) comprend en outre une partie d'extrémité circonférentielle (21), agencée au niveau d'une deuxième extrémité (23) de ladite paroi latérale (15), le dispositif de commande de lumière (1) étant agencé pour être couplé de manière sélective à une ouverture (11) d'un dispositif réflecteur (3). La partie d'extrémité circonférentielle (21) comprend en outre un matériau élastique, l'élément formant couvercle de commande de lumière (13) étant agencé pour être positionné au niveau d'un côté avant (25) de l'ouverture (9) d'un dispositif réflecteur (3), au moins la partie d'extrémité circonférentielle (21) étant agencée pour être disposée de manière flexible au niveau d'un côté arrière (27) de ladite ouverture (11) de façon à maintenir l'élément formant couvercle de commande de lumière (13) sur le côté avant de l'ouverture (11).
PCT/SE2019/050043 2018-01-30 2019-01-23 Dispositif de commande de lumière pour fixation sélective à des dispositifs réflecteurs WO2019151921A1 (fr)

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SE1850102-3 2018-01-30
SE1850102 2018-01-30

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US6176598B1 (en) * 1999-04-16 2001-01-23 Lowel-Light Manufacturing, Inc. Light fixture flexible reflector
US20050088836A1 (en) * 2003-10-28 2005-04-28 Chimera Company Removable lightbank extension
US20100188752A1 (en) * 2007-06-28 2010-07-29 Hans-Werner Friedrich Briese Diffuser to be detachably mounted on a reflector screen or the like
WO2013098678A1 (fr) * 2011-12-27 2013-07-04 Zampetti Fabrizio Dispositif d'éclairage

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EP0173626A1 (fr) * 1984-08-29 1986-03-05 Ml Modern Lights Ag Boîte diffusant la lumière
US6176598B1 (en) * 1999-04-16 2001-01-23 Lowel-Light Manufacturing, Inc. Light fixture flexible reflector
US20050088836A1 (en) * 2003-10-28 2005-04-28 Chimera Company Removable lightbank extension
US20100188752A1 (en) * 2007-06-28 2010-07-29 Hans-Werner Friedrich Briese Diffuser to be detachably mounted on a reflector screen or the like
WO2013098678A1 (fr) * 2011-12-27 2013-07-04 Zampetti Fabrizio Dispositif d'éclairage

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