EP0716759A1 - Multidirectional lighting stand forming a portable studio - Google Patents

Multidirectional lighting stand forming a portable studio

Info

Publication number
EP0716759A1
EP0716759A1 EP95924373A EP95924373A EP0716759A1 EP 0716759 A1 EP0716759 A1 EP 0716759A1 EP 95924373 A EP95924373 A EP 95924373A EP 95924373 A EP95924373 A EP 95924373A EP 0716759 A1 EP0716759 A1 EP 0716759A1
Authority
EP
European Patent Office
Prior art keywords
frame
articulated
support according
support
multidirectional
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP95924373A
Other languages
German (de)
French (fr)
Inventor
Olivier Caillaud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0716759A1 publication Critical patent/EP0716759A1/en
Withdrawn legal-status Critical Current

Links

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
    • G03B15/07—Arrangements of lamps in studios

Definitions

  • Photographic, cinematographic or video shots in low intensity light are made using artificial lighting - In the majority of cases, this artificial lighting can be classified in the following two categories.
  • the artificial lighting provided by a single source secured to the device allows shots considered satisfactory in most common cases of life, for example family reunions, parties or other, it does not allow to reach a minimal quality in many other applications and cannot satisfy the demanding amateur and a fortiori the professional.
  • the experienced amateur, as well as the professional, are looking for high-performance, light equipment that is easy to use and the cost of which is in proportion to that of an average camera.
  • the aim of the present invention is to provide the photographer, both amateur and professional, with a portable light support which is light and compact, constituting an ideal compromise between the two types of embodiments mentioned above and providing excellent indoor and outdoor lighting qualities for the subjects to be photographed regardless of the ambient light.
  • the portable omnidirectional lighting support consists of a frame-shaped frame equipped with a plurality of light sources that can be moved and orientable according to multiple positions and orientations, between a low level and a high level. and according to an amplitude of transverse and in-depth movement, each light source being advantageously enclosed in a light box, articulated to the frame by individual multidirectional supports of the type, for example, with offset axes, with ball joint or even with gimbal .
  • the lower cross member of the frame has a box-holder plate on which the camera is fixed.
  • the lower end of the frame is provided with at least one adjustable foot ensuring stability and contact with the ground or with one or more handle (s) facilitating the use of the lighting support in the worn state.
  • the portable multidirectional lighting support is shaped as a removable and movable frame, for example of generally square or rectangular shape, the camera being able to be fixed on the lower cross-member of the frame and the light sources enclosed in their orientable box which can be placed on the perimeter of the frame, in number and in orientation imposed by the ambient light and the nature of the subject to be photographed.
  • the portable lighting support will be integrated into a transport bag, for example a backpack. It can advantageously constitute, entirely or once partially disassembled, the internal frame of the backpack.
  • the portable multidirectional lighting support consists of at least four branches or arms joined in frame by their base, by an interface support plate also serving as a mounting support for the device. shooting, grab handle or tripod.
  • An upper connecting cross connecting the independent arms to their tops is also provided in order to improve the rigidity of the support and to increase the capacity of light sources that can be mounted on the frame.
  • the present invention therefore makes it possible to remedy all the drawbacks mentioned in the first part of the description. It makes it possible to make available to the photographer or cameraman a portable and inexpensive lighting equipment, offering indoor and outdoor, results equivalent to those obtained by means of more complex and expensive studio equipment. In particular, the multidirectional lighting guarantees a remarkable rendering of the photographed subject while avoiding the effects of brilliance.
  • Figure 1 is a perspective view of the basic version of the portable multidirectional lighting support according to the invention.
  • Figure 2 is a simplified perspective view of the first part of the multidirectional link connecting each light box with the frame;
  • FIG. 3 is a perspective view of an example of a light box suitable for the studio according to the invention and of the articulated multidirectional link by which it is connected to the frame;
  • Figure 4 is a schematic perspective view of an example of a housing plate for the camera
  • Figure 5 is a simplified view of the basic frame variant with ball type hinge blocks, frame can be used outdoors;
  • Figures 6 and 7 are perspective representations of the so-called outdoor embodiment of the portable studio can be integrated into a backpack;
  • Figure 8 is a side view of the outdoor variant of Figure 5 shown at the place of shooting.
  • the variant embodiments of the lighting support detailed below are designed to receive a photographic or surveillance device of the type, for example, photographic or video camera.
  • the portable multidirectional lighting support consists of a frame designated by the general reference 1 of the frame type, in the form of a perimeter contour made up of rectilinear profiled elements of cross section by example of general shape circular. It consists of two horizontal crossbars, one lower 2 and the other upper 3 and two vertical uprights one left 4 and one other right 5, mutually parallel.
  • the frame 1 is equipped with a plurality of light sources such as 6, enclosed in light boxes such as 7, themselves mounted articulated on the uprights 4 and 5 and on the upper crossmember 3 of this frame by means of individual multidirectional supports such as 8 each forming a composite articulated link 9 with multiple orientations between the sides of the frame 1 and the light boxes 7.
  • the light sources 6 are preferably, but not limited to, the number of four, suitably arranged on the frame 1 above and on either side of a camera 10 with housing 11, in order to ensure uniform and balanced lighting of the subject to be photographed, making it possible to clearly restore its relief.
  • the housing 11 is fixed on a support plate 12, movably mounted on the lower cross member 2 as will be seen below.
  • the rectilinear elements constituting the body of the frame 1 have a profile suitable for mounting and immobilizing the ends of the articulated composite connections 9 with the light boxes 7.
  • the variant shown by way of example shows uprights 4 and 5 having fixing zones 13 and 14 respectively consisting of a succession of annular grooves such as 15 of semi-circular profile separated by cylindrical sections such as 16 of small thickness as can be seen in more detail in FIG. 2.
  • These extended fixing zones 13 and 14 allow sufficient vertical clearance for each multidirectional support. individual 8 to cover all the lighting needs of the different possible shots.
  • the upper horizontal cross-member 3, with ends assembled to the uprights by ball-nuts 17 and 18, is shaped into longitudinal grooves or grooves separated by ribs for mounting end joints 19 of composite articulated connections upper 20 with the light boxes 7 by means of additional individual multidirectional supports 21.
  • the lower horizontal cross member 2 of the frame 1 is equipped with two adjustable feet such as 22 and 23 ensuring its stability, contact with a flat support and its mobility on this flat support.
  • the upper crossmember 3 of the frame 1 can be provided with a removable transport handle or shaped in the central part according to a grip handle 24 intended to facilitate the carrying, installation and installation of the lighting support in one any place.
  • removable anatomical handles 25 and 26 are provided on the lower part of the vertical uprights 4 and 5 of the frame 1 in order to facilitate its use in the worn state as a fist instrument.
  • the frame 1 is removable by fitting profiled rectilinear elements the component or any other fast assembly-dissociation system. It has a general square perimeter shape, but one can, of course, give it any other shape, for example, rectangular round or oval, without departing from the scope of the invention.
  • This removable variant will make it possible to use extensions both for the uprights 4 and 5 and for the crosspieces 2 and 3 in order to allow a clearance in height and in width.
  • the frame is assembled by assembling a first end of a first upright, for example 4 perpendicular to one end opposite the lower horizontal cross member 2.
  • the same operation is repeated with the vertical upright 5 and the upper horizontal cross member 3, then the two half-frames thus formed are assembled at their tower.
  • the ends of the horizontal crosspieces 2 and 3, and the vertical uprights 4 and 5 of the frame 1 are locked in the assembled state, for example by at least one lug or other means, allowing rapid, safe and easy assembly and disassembly operations. and also allowing the profiled elements to be brought closer or apart from the frame.
  • the portable studio according to the invention can be equipped with different light sources 6 from the simplest to the most complicated.
  • the light sources 6 are enclosed in boxes called light boxes 7 which have a multidirectional character by their connection to the frame or their mounting on this link, that is to say that they are multi-directional to allow the diffusion of the light in any desired direction.
  • This general characteristic is essential for the portable studio since it is called upon to serve as lighting equipment for many types of shots: microphotography, macro photography, reproduction, portrait or others.
  • each individual multidirectional support 8 forms a composite articulated link consisting on the one hand of a basic articulated assembly such as 27 with crossed axes comprising two articulation blocks 28 and 29 connected together by a guide rod 30 and on the other part of an end link 31 in the form of two rods 32 and 33 articulated together by a pivot articulation 34 at their common ends and each articulated at its other end respectively at the adjacent articulation block 29 and to a slider support 35 carrying the light box 7.
  • the connecting articulations present at the ends of the links are preferably of the pivoting type, that is to say allowing the links 32,33 to rotate in a plane with low deflections corresponding to the games.
  • each base articulation block 28 relating to an upright is pivotally mounted around this upright and movable along this one.
  • Each end articulation block 29 is pivotally mounted around the guide rod 30 and movable along the latter.
  • each light box 7 is hingedly connected to the end articulation block 29 by the end link 31 with links 32, 33 giving great freedom of movement in a wide field of space.
  • Each articulation block 28, 29 has an identical composite structure of generally cylindrical shape. This structure is formed by two half-shells 36 and 37 full and contiguous half or semi-cylindrical identical or unequal with opposite plane internal faces by which they are joined together plane against plane. The planes of the interior faces may include a longitudinal groove so as to be able to grip the guide rod 30 with a force of maintenance dependent on that of the assembly. In the case of two unequal half-shells 36 and 37, the guide rod 30 passes through one of the two half-shells 36 or 37 lengthwise. The orientation blocking is then carried out by transverse screws or tilting fingers as will be seen below.
  • the free half-shell 36 or 37 is crossed by a profiled element of the frame, amount 4.5 or cross 2.3. It is one of the fixing zones 13,14 with superimposed annular grooves 15 or the grooved structure of the upper cross member 3. The corresponding block is immobilized in pivoting and sliding relative to this profiled element as described below. .
  • the basic articulation 28 on the vertical upright 4 of the frame 1 is obtained, for example, by engagement of a rocking locking finger 38, actuated by a push button 37 with spring, in one of the circular transverse grooves 15 formed at regular intervals on each of the vertical uprights 4 and 5 of the frame at the attachment zones.
  • pressing the push button 39 causes the end of the locking finger 38 to engage in the circular transverse groove 15 located opposite it.
  • the resulting friction forces are sufficient to immobilize the base joint 28 both longitudinally and pivotally.
  • pressing the push button 39 again releases the locking finger 38 from its engagement in the circular transverse groove 15 and the base articulation block 28 can be moved again.
  • the immobilization of the end articulation block 29 is obtained by engagement of a rocking blocking finger 40 actuated by a button 41, for example identical to the finger 38 and the button 39, in one of the longitudinal grooves such as 42 which is located opposite, among those formed on the straight guide support 30.
  • This straight guide rod 30 being shaped identical to the profile constituting the horizontal crosspieces of the frame, the blocking is perfect and thus prevents the light box 7 from sagging under the effect of its own weight. Consequently, each light box 7 is movable individually in all directions and can scan a large field.
  • each light box 7 is connected to an upright, on the one hand between the lower horizontal cross member 2 and the upper horizontal cross member 3 of the frame 1, on the other hand according to an amplitude of transverse and in-depth movement and finally to pivoting around the guide rod 30 and a horizontal axis perpendicular thereto. It is the same in principle for the light boxes 7 connected to the upper cross member 3.
  • the light beams coming from the light sources 7 can therefore be directed in any direction with all the desired precision, for example concentrated on only part of the subject photographed, or else distributed homogeneously on the whole subject, making it possible to easily carry out multiple lighting combinations.
  • the light sources 6 can be in different forms, from flash sources of the flash or flash lamp type, to sources with permanent light and with fixed or variable light intensity.
  • the light sources 6 are contained in boxes called light boxes 7 of generally parallelepiped shape having a front face 43 provided with an assembly 44 comprising a diffuser glass and / or one or more removable optical filter (s) intended to avoid any phenomenon of highlighting of the photographed subject.
  • Each light box 7 has a rear face 45 which can receive a cover 46, for example of general pyramidal shape, extended by an optical fiber 47 useful, for example, in macro photography for transporting light to the subject.
  • only four light sources 6 have been mounted on the frame 1.
  • at least two of the light sources 6 will be arranged directly above the photographed object, always with the aim of improving the lighting of the subject with a view to better quality of the photography.
  • the light sources 6 will be equipped with a control module (not shown) of the light intensity.
  • This control module can be actuated directly and manually.
  • the control module will be operated remotely by means of a remote control, the adjustment of the light intensity produced by the light source or sources being effected automatically by means of a microprocessor system. , as a function of the focal length of the lens of the camera 10, of the aperture of its diaphragm and of the selected shutter speed.
  • this information can be provided directly by the microprocessor contained in the housing 11 of the camera 10 when the operation thereof is automatic.
  • the bases of the adjustable feet 22, 23 of the frame 1 are provided with pads 48, 49. or castors (not shown) improving its support on the ground or allowing the user to move it more easily by sliding or rolling it on the ground.
  • the frame 1 is preferably adjustable in height by means of telescopic extensions such as 50.51 which the adjustable feet 22.23 comprise. The accidental retraction movement of the telescopic extensions 50,51 is made impossible by locking lugs. As required, we can adjust the height of the frame 1 from the ground.
  • the adjustable feet 22, 23 are also mounted so that they can pivot on the lower horizontal cross member of the frame 2, which makes it possible to pivot it forwards or backwards relative to this cross member 2.
  • the frame 1 has a movable mount on its lower cross member 2, the plate 12 for the housing holder intended to receive the camera 10: photographic camera, cinematographic or video camera, remote surveillance camera, optical observation device or the like.
  • the box-holder plate 12 a variant of which is shown in detail in FIG. 4, is produced in the form of a folding shelf 54 bearing on the lower cross member 2 of the frame 1. It is foldable by pivoting about an axis transverse to the lower cross member 2 by means of a hinge 55. It is locked in the folded position by a locking mechanism, for example with a lug controlled by a push button.
  • the shelf 54 rests on one side on the lower grooved cross member 2 by the hinge 55, the transverse axis of which is mounted on a movable block by means of which the sliding movements are carried out along the lower cross member, but also the tilting movements in pivoting around the lower crossmember.
  • the tablet 54 rests at its other end on the lower crossmember 2 by a support shoe 57 giving it the seat necessary to support the camera 10.
  • a rectilinear slot opening 58 is provided in transverse orientation for the passage of the fixing of the camera 10.
  • the translational and pivoting movements of the support plate 12 and therefore of the housing 11 the camera 10 associated with the possibilities of positioning the frame 1 on the ground and adjusting its height and its inclination relative to the vertical guarantee the possibility of always being able to find a suitable angle for shooting.
  • the immobilization of the support plate 12 on the lower horizontal cross member 2 of the frame 1 can also be obtained in a similar manner to that of the articulations of the composite connection existing between the frame 1 and the light boxes 7.
  • FIG 5 there is shown another simplified embodiment of an individual multidirectional outdoor lighting support 59.
  • the outdoor frame 59 consists of a plurality of simple arms such as 60 pivotally mounted by one of their ends directly on the profiles 61 constituting the frame 59. These individual arms 60 are each terminated by a light box 62 articulated on their other end by a simple pivoting articulation 63 or a composite articulation with several degrees of freedom.
  • the open-air frame 59 also comprises a pivoting base 64 shaped into a plate and mounted to pivot around a lower support cross member 65 of the frame 59.
  • the pivoting base 64 is provided with support legs such as 66 which can be released laterally by rotation around the fixing axes such as 67 by means of which they are mounted on the base 64.
  • the support feet 66 are provided with openings such as 68 through which one can engage fixing sardines such as 69 which allow (see Figure 8) to anchor the frame 59 to the ground, even when the latter has a steep slope.
  • the outdoor frame 59 is shown taken out of a transport bag 70, for example a backpack, in which it is usually stored.
  • the open-air frame 59 entirely constitutes the internal frame of the backpack 70 when it is stored in it. It thus gives the backpack 70 an additional rigidity facilitating its transport and has the advantage of being able to be used immediately after having been removed from the bag 70.
  • the backpack 70 thus formed makes it possible to store and transport any object or accessory useful to its user when he leaves to take pictures outdoors.
  • the outdoor frame 59 therefore has a double utility, on the one hand as a multidirectional lighting support and on the other hand as that frame of the backpack 70 in which it is stored.
  • the backpack 70 can advantageously be equipped with pockets such as 71 for accessories of the "type, for example, objectives, batteries, accumulators, filter boxes or additional lenses or the like.
  • a multidirectional lighting support suitable, for example, for lighting a stage or places for filming a film.
  • the displacement and the orientation of the individual multidirectional supports and of the light sources can advantageously be assisted by motors, for example stepping with direct control or remote control.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Studio Devices (AREA)

Abstract

A portable photographic lighting stand consisting of a frame (1) with a plurality of separate multidirectional holders (8) with positionable light sources (6) of which the angles can be simultaneously adjusted manually or via directly or remotely controlled motors. The lower ends of the frame (1) are shaped into height-adjustable legs (22, 23) providing stability and contacting a bearing surface. The lower crossbar (2) of the frame (1) has a movable and tiltable supporting plate (12) on which a photographic device (10) is fixed. Said stand may be used outdoors or indoors by lighting professionals and amateurs, e.g. for portraits, close-ups, micro- and macrophotographs and other close-in shots.

Description

SUPPORT MULTIDIRECTIONNEL D'ECLAIRAGE, CONSTITUANT UN STUDIO PORTABLEMULTIDIRECTIONAL LIGHTING SUPPORT, CONSTITUTING A PORTABLE STUDIO
Les prises de vue photographiques, cinématographiques ou vidéo en lumière de faible intensité s'effectuent en utilisant un éclairage artificiel- Dans la majorité des cas, cet éclairage artificiel peut être rangé dans les deux catégories suivantes.Photographic, cinematographic or video shots in low intensity light are made using artificial lighting - In the majority of cases, this artificial lighting can be classified in the following two categories.
Il est soit sommaire, c'est-à-dire constitué d'une seule source ponctuelle de lumière d'ambiance, soit élaboré, c'est-à-dire mettant en oeuvre une pluralité de sources spécialisées disposées dans des endroits différents.It is either summary, that is to say made up of a single point source of ambient light, or elaborated, that is to say using a plurality of specialized sources arranged in different places.
On peut citer pour le premier cas de simples torches ou flashes à rapporter sur l'appareil de prise de vue et faisant corps avec lui. On peut citer pour le deuxième cas des projecteurs à lentille de Fresnel, des sources lumineuses diffusantes, par exemple, à diffuseur parapluie, des spots à concentration de lumière sur une zone restreinte ou bien encore d'autres sources perfectionnées.Mention may be made, for the first case, of simple torches or flashes to be brought back to the camera and being integral with it. Mention may be made, for the second case, of Fresnel lens projectors, diffusing light sources, for example, with an umbrella diffuser, spotlights with concentration of light on a restricted area or even other improved sources.
Si l'éclairage artificiel dispensé par une source unique solidaire de l'appareil permet des prises de vue considérées comme satisfaisantes dans la majorité des cas courants de la vie, par exemple réunions familiales, fêtes ou autres, il ne permet pas d'atteindre une qualité minimale dans bien d'autres applications et ne peut satisfaire l'amateur exigeant et à fortiori le professionnel.If the artificial lighting provided by a single source secured to the device allows shots considered satisfactory in most common cases of life, for example family reunions, parties or other, it does not allow to reach a minimal quality in many other applications and cannot satisfy the demanding amateur and a fortiori the professional.
Le matériel d'éclairage élaboré fournit de bonnes conditions de prise de vue aussi bien en studio qu'en extérieur. Malheureusement, son caractère encombrant, onéreux et peu mobile dans l'espace ne constitue pas un réel avantage dans de nombreuses situations telles que celles des prises de vue rapides en extérieur, reportages ou autres, portraits, micro et macrophotographie et même dans le cas de natures mortes.The elaborate lighting equipment provides good shooting conditions both in the studio and outdoors. Unfortunately, its bulky, expensive and not very mobile in space is not a real advantage in many situations such as those of fast shots outdoors, reports or other, portraits, micro and macro photography and even in the case of still lifes.
L'amateur averti, ainsi que le professionnel, recherchent un matériel performant, léger, facile à mettre en oeuvre et dont le coût est en proportion avec celui d'un appareil moyen de prise de vue.The experienced amateur, as well as the professional, are looking for high-performance, light equipment that is easy to use and the cost of which is in proportion to that of an average camera.
En considération des inconvénients de l'art antérieur, la présente invention a pour but de proposer au photographe, tant amateur que professionnel, un support portable d'éclairage léger et peu encombrant, constituant un compromis idéal entre les deux types de réalisations citées précédemment et permettant d'obtenir, en intérieur comme en plein air, d'excellentes qualités d'éclairage des sujets à photographier indépendamment de la luminosité ambiante.In consideration of the drawbacks of the prior art, the aim of the present invention is to provide the photographer, both amateur and professional, with a portable light support which is light and compact, constituting an ideal compromise between the two types of embodiments mentioned above and providing excellent indoor and outdoor lighting qualities for the subjects to be photographed regardless of the ambient light.
Selon l'invention, le support portable d'éclairage omnidirectionnel se compose d'un bâti en forme de cadre équipé d'une pluralité de sources de lumière déplaçables et orientables selon des positions et des orientations multiples, entre un niveau bas et un niveau haut et selon une amplitude de déplacement transversal et en profondeur, chaque source de lumière étant avantageusement renfermée dans une boîte à lumière, articulée au cadre par des supports multidirectionnels individuels du type, par exemple, à axes décalés, à rotule ou bien encore à la cardan. La traverse inférieure du cadre comporte une platine porte-boîtier sur laquelle est fixé l'appareil de prise de vue. L'extrémité inférieure du cadre est munie d'au moins un pied réglable assurant la stabilité et le contact avec le sol ou d'une ou plusieurs poignée(s) facilitant l'utilisation du support d'éclairage à l'état porté. Selon une première forme de réalisation, le support portable d'éclairage multidirectionnel est conformé en cadre démontable et mobile, par exemple de forme générale carrée ou rectangulaire, l'appareil de prise de vue pouvant être fixé sur la traverse inférieure du cadre et les sources lumineuses renfermées dans leur boîtier orientable pouvant être disposées sur le périmètre du cadre, en nombre et en orientation imposés par la luminosité ambiante et la nature du sujet à photographier.According to the invention, the portable omnidirectional lighting support consists of a frame-shaped frame equipped with a plurality of light sources that can be moved and orientable according to multiple positions and orientations, between a low level and a high level. and according to an amplitude of transverse and in-depth movement, each light source being advantageously enclosed in a light box, articulated to the frame by individual multidirectional supports of the type, for example, with offset axes, with ball joint or even with gimbal . The lower cross member of the frame has a box-holder plate on which the camera is fixed. The lower end of the frame is provided with at least one adjustable foot ensuring stability and contact with the ground or with one or more handle (s) facilitating the use of the lighting support in the worn state. According to a first embodiment, the portable multidirectional lighting support is shaped as a removable and movable frame, for example of generally square or rectangular shape, the camera being able to be fixed on the lower cross-member of the frame and the light sources enclosed in their orientable box which can be placed on the perimeter of the frame, in number and in orientation imposed by the ambient light and the nature of the subject to be photographed.
Selon une seconde forme de réalisation, le support portable d'éclairage sera intégré dans un sac de transport, par exemple un sac à dos. Il peut avantageusement constituer, entièrement ou une fois partiellement démonté, l'armature interne du sac à dos.According to a second embodiment, the portable lighting support will be integrated into a transport bag, for example a backpack. It can advantageously constitute, entirely or once partially disassembled, the internal frame of the backpack.
Selon une autre forme de réalisation, le support portable d'éclairage multidirectionnel est constitué d'au moins quatre branches ou bras réunis en cadre par leur base, par une plaque-support d'interface faisant également office de support de fixation pour l'appareil de prise de vue, de poignée de maintien ou de trépied. Une traverse de liaison supérieure réunissant les bras indépendants à leurs sommets est également prévue afin d'améliorer la rigidité du support et d'augmenter la capacité en sources lumineuses pouvant être montées sur le bâti.According to another embodiment, the portable multidirectional lighting support consists of at least four branches or arms joined in frame by their base, by an interface support plate also serving as a mounting support for the device. shooting, grab handle or tripod. An upper connecting cross connecting the independent arms to their tops is also provided in order to improve the rigidity of the support and to increase the capacity of light sources that can be mounted on the frame.
La présente invention permet donc de remédier à tous les inconvénients cités dans la première partie de la description. Elle permet de mettre à la disposition du photographe ou cameraman un matériel d'éclairage portable et peu onéreux, offrant en intérieur comme en plein air, des résultats équivalents à ceux obtenus au moyen d'équipements de studio plus complexes et coûteux. En particulier, l'éclairage multidirectionnel garantit un rendu remarquable du sujet photographié en évitant les effets de brillance.The present invention therefore makes it possible to remedy all the drawbacks mentioned in the first part of the description. It makes it possible to make available to the photographer or cameraman a portable and inexpensive lighting equipment, offering indoor and outdoor, results equivalent to those obtained by means of more complex and expensive studio equipment. In particular, the multidirectional lighting guarantees a remarkable rendering of the photographed subject while avoiding the effects of brilliance.
La présente invention sera bien comprise et des détails apparaîtront mieux à la lecture de la description qui va suivre de quatre formes particulières de réalisation en référence au dessin annexé dans lequel :The present invention will be well understood and details will appear better on reading the description which follows of four particular embodiments with reference to the drawing annexed in which:
. la figure 1 est une vue en perspective de la version de base du support portable d'éclairage multidirectionnel selon l'invention ; . la figure 2 est une vue simplifiée en perspective de la première partie de la liaison multidirectionnelle reliant chaque boîte à lumière avec le cadre ;. Figure 1 is a perspective view of the basic version of the portable multidirectional lighting support according to the invention; . Figure 2 is a simplified perspective view of the first part of the multidirectional link connecting each light box with the frame;
. la figure 3 est une vue en perspective d'un exemple de boîte à lumière appropriée au studio selon 1'invention et de la liaison multidirectionnelle articulée par laquelle elle est reliée au cadre ;. FIG. 3 is a perspective view of an example of a light box suitable for the studio according to the invention and of the articulated multidirectional link by which it is connected to the frame;
. la figure 4 est une vue schématique en perspective d'un exemple de platine porte-boîtier pour l'appareil de prise de vue ;. Figure 4 is a schematic perspective view of an example of a housing plate for the camera;
. la figure 5 est une vue simplifiée de la variante de base en cadre avec des blocs d'articulations du type à boule, cadre pouvant servir en plein air ; . les figures 6 et 7 sont des représentations en perspective de la variante de réalisation dite de plein air du studio portable intégrable dans un sac à dos ;. Figure 5 is a simplified view of the basic frame variant with ball type hinge blocks, frame can be used outdoors; . Figures 6 and 7 are perspective representations of the so-called outdoor embodiment of the portable studio can be integrated into a backpack;
. la figure 8 est une vue de profil de la variante de plein air de la figure 5 représentée sur le lieu de prise de vue.. Figure 8 is a side view of the outdoor variant of Figure 5 shown at the place of shooting.
Les variantes d'exécution du support d'éclairage détaillées ci-dessous sont prévues pour recevoir un appareil de prise de vue ou de surveillance du type, par exemple, appareil photographique ou caméra vidéo.The variant embodiments of the lighting support detailed below are designed to receive a photographic or surveillance device of the type, for example, photographic or video camera.
Sur la figure 1, le support portable d'éclairage multidirectionnel selon la présente invention se compose d'un bâti désigné par la référence générale 1 du type cadre, sous la forme d'un contour périmétrique constitué d'éléments rectilignes profilés de section droite par exemple de forme générale circulaire. Il se compose de deux traverses horizontales l'une inférieure 2 et l'autre supérieure 3 et de deux montants verticaux l'un gauche 4 et 1 'autre droit 5, parallèles entre eux. Selon une caractéristique essentielle de l'invention, le cadre 1 est équipé d'une pluralité de sources lumineuses telles que 6, renfermées dans des boîtes à lumière telles que 7, elles mêmes montées articulées sur les montants 4 et 5 et sur la traverse supérieure 3 de ce cadre au moyen de supports multidirectionnels individuels tels que 8 formant chacun une liaison articulée composite 9 à orientations multiples entre les côtés du cadre 1 et les boîtes à lumière 7. Les sources lumineuses 6 sont préférentiellement, mais non limitativement, au nombre de quatre, disposées de façon adaptée sur le cadre 1 au-dessus et de part et d'autre d'un appareil de prise de vue 10 à boîtier 11, afin d'assurer un éclairage homogène et équilibré du sujet à photographier, permettant de bien restituer son relief.In FIG. 1, the portable multidirectional lighting support according to the present invention consists of a frame designated by the general reference 1 of the frame type, in the form of a perimeter contour made up of rectilinear profiled elements of cross section by example of general shape circular. It consists of two horizontal crossbars, one lower 2 and the other upper 3 and two vertical uprights one left 4 and one other right 5, mutually parallel. According to an essential characteristic of the invention, the frame 1 is equipped with a plurality of light sources such as 6, enclosed in light boxes such as 7, themselves mounted articulated on the uprights 4 and 5 and on the upper crossmember 3 of this frame by means of individual multidirectional supports such as 8 each forming a composite articulated link 9 with multiple orientations between the sides of the frame 1 and the light boxes 7. The light sources 6 are preferably, but not limited to, the number of four, suitably arranged on the frame 1 above and on either side of a camera 10 with housing 11, in order to ensure uniform and balanced lighting of the subject to be photographed, making it possible to clearly restore its relief.
Le boîtier 11 est fixé sur une platine- support 12, montée déplaçable sur la traverse inférieure 2 comme on le verra ci-après. Les éléments rectilignes constituant le corps du cadre 1 présentent un profil adapté au montage et à 1'immobilisation des extrémités des liaisons articulées composites 9 avec les boîtes à lumière 7.The housing 11 is fixed on a support plate 12, movably mounted on the lower cross member 2 as will be seen below. The rectilinear elements constituting the body of the frame 1 have a profile suitable for mounting and immobilizing the ends of the articulated composite connections 9 with the light boxes 7.
La variante représentée à titre d'exemple montre des montants 4 et 5 présentant des zones de fixation respectivement 13 et 14 constituées d'une succession de gorges annulaires telles que 15 de profil semi-circulaire séparées par des tronçons cylindriques tels que 16 de faible épaisseur comme on peut le voir plus en détail sur la figure 2. Ces zones étendues de fixation 13 et 14 permettent un débattement vertical suffisant de chaque support multidirectionnel individuel 8 pour couvrir tous les besoins d'éclairage des différentes prises de vue possibles.The variant shown by way of example shows uprights 4 and 5 having fixing zones 13 and 14 respectively consisting of a succession of annular grooves such as 15 of semi-circular profile separated by cylindrical sections such as 16 of small thickness as can be seen in more detail in FIG. 2. These extended fixing zones 13 and 14 allow sufficient vertical clearance for each multidirectional support. individual 8 to cover all the lighting needs of the different possible shots.
Sur cette même variante, la traverse horizontale supérieure 3, à extrémités assemblées aux montants par des boule-écrous 17 et 18, est conformée en rainures ou gorges longitudinales séparées par des nervures pour le montage d'articulations d'extrémité 19 de liaisons articulées composites supérieures 20 avec les boîtes à lumière 7 au moyen de supports multidirectionnels individuels supplémentaires 21.On this same variant, the upper horizontal cross-member 3, with ends assembled to the uprights by ball-nuts 17 and 18, is shaped into longitudinal grooves or grooves separated by ribs for mounting end joints 19 of composite articulated connections upper 20 with the light boxes 7 by means of additional individual multidirectional supports 21.
La traverse horizontale inférieure 2 du cadre 1 est équipée de deux pieds réglables tels que 22 et 23 assurant sa stabilité, le contact avec un support plan et sa mobilité sur ce support plan. Par ailleurs, la traverse supérieure 3 du cadre 1 peut être munie d'une poignée de transport démontable ou conformée en partie centrale selon une anse de préhension 24 destinée à faciliter le port, la pose et l'installation du support d'éclairage en un endroit quelconque. Enfin, des poignées anatomiques démontables 25 et 26 sont prévues sur la partie inférieure des montants verticaux 4 et 5 du cadre 1 afin de faciliter son utilisation à l'état porté en tant qu'instrument de poing.The lower horizontal cross member 2 of the frame 1 is equipped with two adjustable feet such as 22 and 23 ensuring its stability, contact with a flat support and its mobility on this flat support. Furthermore, the upper crossmember 3 of the frame 1 can be provided with a removable transport handle or shaped in the central part according to a grip handle 24 intended to facilitate the carrying, installation and installation of the lighting support in one any place. Finally, removable anatomical handles 25 and 26 are provided on the lower part of the vertical uprights 4 and 5 of the frame 1 in order to facilitate its use in the worn state as a fist instrument.
Selon la variante représentée sur la figure 1, le cadre 1 est démontable par emboîtement d'éléments rectilignes profilés le composant ou tout autre système d'assemblage-dissociation rapide. Il affecte une forme générale périmétrique carrée, mais on pourra, bien entendu, lui donner toute autre forme par exemple, rectangulaire ronde ou ovale, sans sortir du domaine de 1'invention.According to the variant shown in Figure 1, the frame 1 is removable by fitting profiled rectilinear elements the component or any other fast assembly-dissociation system. It has a general square perimeter shape, but one can, of course, give it any other shape, for example, rectangular round or oval, without departing from the scope of the invention.
Cette variante démontable permettra d'utiliser des rallonges tant pour les montants 4 et 5 que pour les traverses 2 et 3 en vue de permettre un débattement en hauteur et en largeur.This removable variant will make it possible to use extensions both for the uprights 4 and 5 and for the crosspieces 2 and 3 in order to allow a clearance in height and in width.
Conformément à la version démontable, le cadre est monté par assemblage d'une première extrémité d'un premier montant par exemple 4 perpendiculairement à une extrémité en regard de la traverse horizontale inférieure 2. La même opération est répétée avec le montant vertical 5 et la traverse horizontale supérieure 3, puis les deux demi-cadres ainsi formés sont assemblés à leur tour. Les extrémités des traverses horizontales 2 et 3, et des montants verticaux 4 et 5 du cadre 1 sont bloquées à l'état monté par exemple par au moins un ergot ou autre moyen, permettant des opérations de montage et de démontage rapides, sûres et faciles et permettant également de rapprocher ou d'écarter les éléments profilés du cadre.In accordance with the removable version, the frame is assembled by assembling a first end of a first upright, for example 4 perpendicular to one end opposite the lower horizontal cross member 2. The same operation is repeated with the vertical upright 5 and the upper horizontal cross member 3, then the two half-frames thus formed are assembled at their tower. The ends of the horizontal crosspieces 2 and 3, and the vertical uprights 4 and 5 of the frame 1 are locked in the assembled state, for example by at least one lug or other means, allowing rapid, safe and easy assembly and disassembly operations. and also allowing the profiled elements to be brought closer or apart from the frame.
Le studio portable selon l'invention peut être équipé de différentes sources de lumière 6 des plus simples aux plus compliquées.The portable studio according to the invention can be equipped with different light sources 6 from the simplest to the most complicated.
Les sources de lumière 6 sont enfermées dans des boîtiers appelés boîtes à lumière 7 qui présentent un caractère multidirectionnel de par leur liaison au cadre ou leur montage sur cette liaison c'est-à-dire qu'elles sont multiorientables pour permettre la diffusion de la lumière dans toute direction souhaitée.The light sources 6 are enclosed in boxes called light boxes 7 which have a multidirectional character by their connection to the frame or their mounting on this link, that is to say that they are multi-directional to allow the diffusion of the light in any desired direction.
Cette caractéristique générale est essentielle pour le studio portable car il est appelé à servir de matériel d'éclairage pour de nombreux types de prises de vue: la microphotographie, macrophotographie, reproduction, portrait ou autres.This general characteristic is essential for the portable studio since it is called upon to serve as lighting equipment for many types of shots: microphotography, macro photography, reproduction, portrait or others.
Selon l'application, il est nécessaire de pouvoir réorienter la lumière pour composer un autre éclairage technique du sujet, de l'avant, de l'arrière ou latéralement sous des angles d'incidence modifiables.Depending on the application, it is necessary to be able to redirect the light to compose another technical lighting of the subject, from the front, from the rear or laterally under modifiable angles of incidence.
Ce caractère multidirectionnel et multiorientable des sources lumineuses 6 est apporté par les liaisons articulées composites 9 et 20 des supports multidirectionnels individuels 8 à l'extrémité desquels sont montées les boîtes à lumière 7 contenant les sources lumineuses 6. Chaque support multidirectionnel individuel 8 forme une liaison articulée composite constituée d'une part d'un ensemble articulé de base tel que 27 à axes croisés comprenant deux blocs d'articulation 28 et 29 reliés entre eux par une tige-guide 30 et d'autre part d'une liaison d'extrémité 31 sous la forme de deux biellettes 32 et 33 articulées entre elles par une articulation de pivotement 34 au niveau de leurs extrémités communes et chacune articulée au niveau de son autre extrémité respectivement au bloc d'articulation adjacent 29 et à un support-curseur 35 portant la boîte à lumière 7. Les articulations de liaison présentes aux extrémités des biellettes sont de préférence du type à pivotement c'est-à-dire autorisant aux biellettes 32,33 une rotation dans un plan avec de faibles débattements correspondant aux jeux.This multidirectional and multi-orientable nature of the light sources 6 is provided by the composite articulated links 9 and 20 of the individual multidirectional supports 8 at the end of which are mounted the light boxes 7 containing the light sources 6. Each individual multidirectional support 8 forms a composite articulated link consisting on the one hand of a basic articulated assembly such as 27 with crossed axes comprising two articulation blocks 28 and 29 connected together by a guide rod 30 and on the other part of an end link 31 in the form of two rods 32 and 33 articulated together by a pivot articulation 34 at their common ends and each articulated at its other end respectively at the adjacent articulation block 29 and to a slider support 35 carrying the light box 7. The connecting articulations present at the ends of the links are preferably of the pivoting type, that is to say allowing the links 32,33 to rotate in a plane with low deflections corresponding to the games.
Plus particulièrement, les deux blocs d'articulation 28 et 29 sont identiques et reliés entre eux par la tige-guide 30. Chaque bloc d'articulation de base 28 relatif à un montant est monté à pivotement autour de ce montant et déplaçable le long de celui-ci. Chaque bloc d'articulation d'extrémité 29 est monté à pivotement autour de la tige-guide 30 et déplaçable le long de celle-ci. De plus, chaque boîte à lumière 7 est reliée de façon articulée au bloc d'articulation d'extrémité 29 par la liaison d'extrémité 31 à biellettes 32,33 conférant une grande liberté de mouvement dans un champ étendu d'espace.More particularly, the two articulation blocks 28 and 29 are identical and linked together by the guide rod 30. Each base articulation block 28 relating to an upright is pivotally mounted around this upright and movable along this one. Each end articulation block 29 is pivotally mounted around the guide rod 30 and movable along the latter. In addition, each light box 7 is hingedly connected to the end articulation block 29 by the end link 31 with links 32, 33 giving great freedom of movement in a wide field of space.
Chaque bloc d'articulation 28,29 présente une structure composite identique de forme générale cylindrique. Cette structure est formée de deux demi- coquilles 36 et 37 pleines et jointives demi ou semi- cylindriques identiques ou inégales à faces intérieures planes opposées par lesquelles elles sont réunies entre elles plan contre plan. Les plans des faces intérieures pourront comporter une gorge longitudinale de manière à pouvoir enserrer la tige-guide 30 avec une force de maintien dépendant de celle de l'assemblage. Dans le cas de deux demi-coquilles 36 et 37 inégales, la tige- guide 30 traverse une des deux demi-coquilles 36 ou 37 en long. Le blocage d'orientation s'effectue alors par des vis transversales ou des doigts basculants comme on le verra ci-après. Dans le cas du bloc d'articulation de base 28, la demi-coquille 36 ou 37 libre est traversée par un élément profilé du cadre , montant 4,5 ou traverse 2,3. Il s'agit d'une des zones de fixation 13,14 à gorges annulaires 15 superposées ou la structure cannelée de la traverse supérieure 3. Le bloc correspondant est immobilisé en pivotement et en coulissement par rapport à cet élément profilé comme décrit ci-dessous. Le blocage en hauteur et à pivotement deEach articulation block 28, 29 has an identical composite structure of generally cylindrical shape. This structure is formed by two half-shells 36 and 37 full and contiguous half or semi-cylindrical identical or unequal with opposite plane internal faces by which they are joined together plane against plane. The planes of the interior faces may include a longitudinal groove so as to be able to grip the guide rod 30 with a force of maintenance dependent on that of the assembly. In the case of two unequal half-shells 36 and 37, the guide rod 30 passes through one of the two half-shells 36 or 37 lengthwise. The orientation blocking is then carried out by transverse screws or tilting fingers as will be seen below. In the case of the basic articulation block 28, the free half-shell 36 or 37 is crossed by a profiled element of the frame, amount 4.5 or cross 2.3. It is one of the fixing zones 13,14 with superimposed annular grooves 15 or the grooved structure of the upper cross member 3. The corresponding block is immobilized in pivoting and sliding relative to this profiled element as described below. . The height and swivel locking of
1'articulation de base 28 sur le montant vertical 4 du cadre 1 est obtenu, par exemple, par engagement d'un doigt basculant de blocage 38, actionné par un bouton poussoir 37 à ressort, dans l'une des gorges transversales circulaires 15 formées à intervalles réguliers sur chacun des montants verticaux 4 et 5 du cadre au niveau des zones de fixation. Lorsque le bloc d'articulation de base 28 est convenablement orienté, une pression sur le bouton poussoir 39 provoque l'engagement de l'extrémité du doigt de blocage 38 dans la gorge transversale circulaire 15 se trouvant en regard. Les forces de frottement résultantes sont suffisantes pour immobiliser 1 'articulation de base 28 tant longitudinalement qu'en pivotement. Lorsque 1'orientation du bloc d' articulation de base 28 doit être à nouveau modifiée, une nouvelle pression sur le bouton poussoir 39 libère le doigt de blocage 38 de son engagement dans la gorge transversale circulaire 15 et le bloc d'articulation de base 28 peut à nouveau être déplacé. De même, l'immobilisation du bloc d'articulation d'extrémité 29 est obtenue par engagement d'un doigt basculant de blocage 40 actionné par un bouton 41, par exemple identiques au doigt 38 et au bouton 39, dans une des gorges longitudinales telle que 42 qui se trouve en regard, parmi celles formées sur le support rectiligne de guidage 30. Cette tige-guide 30 rectiligne étant conformée de façon identique au profilé constituant les traverses horizontales du cadre, le blocage est parfait et évite ainsi que la boîte à lumière 7 s'affaisse sous l'effet de son propre poids. Par conséquent, chaque boîte à lumière 7 est mobile individuellement dans toutes les directions et peut balayer un champ important. En effet, chaque boîte à lumière 7 est reliée à un montant, d'une part entre la traverse horizontale inférieure 2 et la traverse horizontale supérieure 3 du cadre 1, d'autre part selon une amplitude de déplacement transversal et en profondeur et enfin à pivotement autour de la tige- guide 30 et d'un axe horizontal perpendiculaire à celle-ci. Il en est de même dans le principe pour les boîtes à lumière 7 reliées à la traverse supérieure 3.The basic articulation 28 on the vertical upright 4 of the frame 1 is obtained, for example, by engagement of a rocking locking finger 38, actuated by a push button 37 with spring, in one of the circular transverse grooves 15 formed at regular intervals on each of the vertical uprights 4 and 5 of the frame at the attachment zones. When the basic articulation block 28 is properly oriented, pressing the push button 39 causes the end of the locking finger 38 to engage in the circular transverse groove 15 located opposite it. The resulting friction forces are sufficient to immobilize the base joint 28 both longitudinally and pivotally. When the orientation of the base articulation block 28 has to be changed again, pressing the push button 39 again releases the locking finger 38 from its engagement in the circular transverse groove 15 and the base articulation block 28 can be moved again. Similarly, the immobilization of the end articulation block 29 is obtained by engagement of a rocking blocking finger 40 actuated by a button 41, for example identical to the finger 38 and the button 39, in one of the longitudinal grooves such as 42 which is located opposite, among those formed on the straight guide support 30. This straight guide rod 30 being shaped identical to the profile constituting the horizontal crosspieces of the frame, the blocking is perfect and thus prevents the light box 7 from sagging under the effect of its own weight. Consequently, each light box 7 is movable individually in all directions and can scan a large field. In fact, each light box 7 is connected to an upright, on the one hand between the lower horizontal cross member 2 and the upper horizontal cross member 3 of the frame 1, on the other hand according to an amplitude of transverse and in-depth movement and finally to pivoting around the guide rod 30 and a horizontal axis perpendicular thereto. It is the same in principle for the light boxes 7 connected to the upper cross member 3.
Selon une caractéristique intéressante de l'invention, les faisceaux lumineux issus des sources lumineuses 7 peuvent donc être dirigés dans n'importe quelle direction avec toute la précision voulue, par exemple concentrés sur une partie seulement du sujet photographié, ou bien répartis de manière homogène sur l'ensemble du sujet, permettant de réaliser aisément des combinaisons d'éclairage multiples.According to an advantageous characteristic of the invention, the light beams coming from the light sources 7 can therefore be directed in any direction with all the desired precision, for example concentrated on only part of the subject photographed, or else distributed homogeneously on the whole subject, making it possible to easily carry out multiple lighting combinations.
Les sources lumineuses 6 peuvent se présenter sous différentes formes, depuis des sources à éclair du type flash ou lampe à éclat, jusqu'aux sources à lumière permanente et à intensité lumineuse fixe ou variable.The light sources 6 can be in different forms, from flash sources of the flash or flash lamp type, to sources with permanent light and with fixed or variable light intensity.
Comme indiqué, les sources lumineuses 6 sont renfermées dans des boîtiers appelés boîtes à lumière 7 de forme générale parallélépipèdique présentant une face avant 43 munie d'un ensemble 44 comprenant un verre diffuseur et/ou un ou plusieurs filtre(s) optique(s) amovible(s) destiné(s) à éviter tout phénomène de surbrillance du sujet photographié. Chaque boîte à lumière 7 présente une face arrière 45 pouvant recevoir un cache 46, par exemple de forme générale pyramidale, prolongé par une fibre optique 47 utile, par exemple, en macrophotographie pour transporter la lumière jusqu'au sujet.As indicated, the light sources 6 are contained in boxes called light boxes 7 of generally parallelepiped shape having a front face 43 provided with an assembly 44 comprising a diffuser glass and / or one or more removable optical filter (s) intended to avoid any phenomenon of highlighting of the photographed subject. Each light box 7 has a rear face 45 which can receive a cover 46, for example of general pyramidal shape, extended by an optical fiber 47 useful, for example, in macro photography for transporting light to the subject.
Selon la variante représentée sur la figure 1, seules quatre sources lumineuses 6 ont été montées sur le cadre 1. On pourra néanmoins installer autant de supports multidirectionnels 8, et donc de sources lumineuses 6, que le permettent les caractéristiques physiques du cadre 1. De préférence, deux au moins des sources lumineuses 6 seront disposées à l'aplomb de l'objet photographié, toujours dans le but d'améliorer l'éclairage du sujet en vue d'une meilleure qualité de la photographie.According to the variant shown in FIG. 1, only four light sources 6 have been mounted on the frame 1. However, it is possible to install as many multidirectional supports 8, and therefore of light sources 6, as the physical characteristics of the frame allow. preferably, at least two of the light sources 6 will be arranged directly above the photographed object, always with the aim of improving the lighting of the subject with a view to better quality of the photography.
Dans le cas particulier des sources à lumière permanente et à intensité lumineuse ajustable, les sources lumineuses 6 seront équipées d'un module de commande (non représenté) de l'intensité lumineuse. Ce module de commande pourra être actionné directement et manuellement. Selon une variante plus élaborée, le module de commande sera actionné à distance au moyen d'une télécommande, le réglage de l'intensité lumineuse produite par la ou les source(s) de lumière étant effectué automatiquement au moyen d'un système à microprocesseur, en fonction de la focale de l'objectif de l'appareil de prise de vue 10, de l'ouverture de son diaphragme et de la vitesse d'obturation sélectionnée. Avantageusement, ces informations pourront être fournies directement par le microprocesseur contenu dans le boîtier 11 de l'appareil de prise de vue 10 lorsque le fonctionnement de celui-ci est automatique.In the particular case of permanent light sources and adjustable light intensity, the light sources 6 will be equipped with a control module (not shown) of the light intensity. This control module can be actuated directly and manually. According to a more elaborate variant, the control module will be operated remotely by means of a remote control, the adjustment of the light intensity produced by the light source or sources being effected automatically by means of a microprocessor system. , as a function of the focal length of the lens of the camera 10, of the aperture of its diaphragm and of the selected shutter speed. Advantageously, this information can be provided directly by the microprocessor contained in the housing 11 of the camera 10 when the operation thereof is automatic.
Avantageusement, les bases des pieds réglables 22,23 du cadre 1 sont munies de patins 48,49 ou de roulettes (non représentées) améliorant son appui au sol ou permettant à l'utilisateur de le déplacer plus facilement en le faisant glisser ou rouler sur le sol. Le cadre 1 est de préférence réglable en hauteur grâce à des rallonges télescopiques telles que 50,51 que comportent les pieds réglables 22,23. Le mouvement accidentel de rétraction des rallonges télescopiques 50,51 est rendu impossible par des ergots de blocage. Selon les besoins, on pourra ainsi régler la hauteur du cadre 1 par rapport au sol. Les pieds réglables 22,23 sont également montés libres en pivotement sur la traverse horizontale inférieure du cadre 2, ce qui permet de le faire pivoter vers 1 'avant ou vers l'arrière par rapport à cette traverse 2. De la sorte, on peut régler simplement et avec précision 1'inclinaison du cadre 1 par rapport à la verticale pour le rapprocher du sujet à photographier ou pour tenir compte de la pente du sol. Une fois l'inclinaison du cadre 1 réglée, celui-ci sera facilement immobilisé à l'aide d'un dispositif d'immobilisation 52,53 du type, par exemple, levier de blocage. Après utilisation, on replie les rallonges télescopiques 50,51 et on ramène les bases des pieds réglables 22,23 dans une position parallèle aux montants verticaux 4,5 du bâti 1. On les immobilise ensuite dans cette position au moyen du levier de blocage, afin de faciliter le rangement et le transport du cadre 1.Advantageously, the bases of the adjustable feet 22, 23 of the frame 1 are provided with pads 48, 49. or castors (not shown) improving its support on the ground or allowing the user to move it more easily by sliding or rolling it on the ground. The frame 1 is preferably adjustable in height by means of telescopic extensions such as 50.51 which the adjustable feet 22.23 comprise. The accidental retraction movement of the telescopic extensions 50,51 is made impossible by locking lugs. As required, we can adjust the height of the frame 1 from the ground. The adjustable feet 22, 23 are also mounted so that they can pivot on the lower horizontal cross member of the frame 2, which makes it possible to pivot it forwards or backwards relative to this cross member 2. In this way, it is possible to simply and precisely adjust the inclination of the frame 1 relative to the vertical to bring it closer to the subject to be photographed or to take account of the slope of the ground. Once the inclination of the frame 1 has been adjusted, it will be easily immobilized using an immobilizing device 52, 53 of the type, for example, locking lever. After use, the telescopic extensions 50,51 are folded back and the bases of the adjustable feet 22,23 are brought back into a position parallel to the vertical uprights 4,5 of the frame 1. They are then immobilized in this position by means of the locking lever, to facilitate storage and transport of the frame 1.
Le cadre 1 présente montée déplaçable sur sa traverse inférieure 2, la platine 12 porte-boîtier destinée à recevoir l'appareil de prise de vue 10 : appareil photographique, caméra cinématographique ou vidéo, caméra de télésurveillance, appareil optique d'observation ou autre.The frame 1 has a movable mount on its lower cross member 2, the plate 12 for the housing holder intended to receive the camera 10: photographic camera, cinematographic or video camera, remote surveillance camera, optical observation device or the like.
La platine porte-boîtier 12 dont une variante est représentée en détail sur la figure 4 est réalisée sous la forme d'une tablette 54 rabattable prenant appui sur la traverse inférieure 2 du cadre 1. Elle est rabattable par pivotement autour d'un axe transversal à la traverse inférieure 2 par l'intermédiaire d'une charnière 55. Elle se verrouille dans la position rabattue par un mécanisme de verrouillage, par exemple à ergot commandé par un bouton-poussoir.The box-holder plate 12, a variant of which is shown in detail in FIG. 4, is produced in the form of a folding shelf 54 bearing on the lower cross member 2 of the frame 1. It is foldable by pivoting about an axis transverse to the lower cross member 2 by means of a hinge 55. It is locked in the folded position by a locking mechanism, for example with a lug controlled by a push button.
La tablette 54 repose d'un côté sur la traverse rainurée inférieure 2 par la charnière 55 dont 1'axe transversal est monté sur un bloc déplaçable par 1'intermédiaire duquel sont réalisés les mouvements de coulissement le long de la traverse inférieure, mais aussi les mouvements d'inclinaison en pivotement autour de la traverse inférieure. La tablette 54 repose à son autre extrémité sur la traverse inférieure 2 par un sabot d'appui 57 lui conférant l'assise nécessaire pour supporter l'appareil de prise de vue 10.The shelf 54 rests on one side on the lower grooved cross member 2 by the hinge 55, the transverse axis of which is mounted on a movable block by means of which the sliding movements are carried out along the lower cross member, but also the tilting movements in pivoting around the lower crossmember. The tablet 54 rests at its other end on the lower crossmember 2 by a support shoe 57 giving it the seat necessary to support the camera 10.
Ces structures permettent au plan de la tablette 54 de se trouver à une distance suffisante de la traverse inférieure 2 pour la facilité du montage- fixation de l'appareil de prise de vue 10.These structures allow the plane of the shelf 54 to be at a sufficient distance from the lower crossmember 2 for the ease of mounting-fixing of the camera 10.
A cet effet, une ouverture rectiligne en fente 58 est prévue en orientation transversale pour le passage de la fixation de l'appareil de prise de vue 10. Les mouvements de translation et de pivotement de la platine-support 12 et donc du boîtier 11 de l'appareil de prise de vue 10 associés aux possibilités d'emplacement du cadre 1 sur le sol et de réglage de sa hauteur et de son inclinaison par rapport à la verticale garantissent la possibilité de pouvoir toujours trouver un angle adapté de prise de vue. Par ailleurs, l'immobilisation de la platine-support 12 sur la traverse horizontale inférieure 2 du cadre 1 peut également être obtenue de manière analogue à celle des articulations de la liaison composite existant entre le cadre 1 et les boîtes à lumière 7.For this purpose, a rectilinear slot opening 58 is provided in transverse orientation for the passage of the fixing of the camera 10. The translational and pivoting movements of the support plate 12 and therefore of the housing 11 the camera 10 associated with the possibilities of positioning the frame 1 on the ground and adjusting its height and its inclination relative to the vertical guarantee the possibility of always being able to find a suitable angle for shooting. Furthermore, the immobilization of the support plate 12 on the lower horizontal cross member 2 of the frame 1 can also be obtained in a similar manner to that of the articulations of the composite connection existing between the frame 1 and the light boxes 7.
Sur la figure 5, on a représenté une autre forme de réalisation simplifiée d'un support d'éclairage multidirectionnel individuel de plein air 59. Le cadre de plein air 59 se compose d'une pluralité de bras simples tels que 60 montés à pivotement par une de leurs extrémités directement sur les profilés 61 constituant le cadre 59. Ces bras individuels 60 sont terminés chacun par une boîte à lumière 62 articulée sur leur autre extrémité par une simple articulation à pivotement 63 ou une articulation composite à plusieurs degrés de liberté. Le cadre de plein air 59 comprend également un socle pivotant 64 conformé en plaque et monté à pivotement autour d'une traverse inférieure d'appui 65 du cadre 59. Le socle pivotant 64 est muni de pieds d'appui tels que 66 qui peuvent être dégagés latéralement par rotation autour des axes de fixation tels que 67 au moyen desquels ils sont montés sur le socle 64. Les pieds d'appui 66 sont munis d'ouvertures telles que 68 à travers lesquels on peut engager des sardines de fixation telles que 69 qui permettent (voir figure 8) d'ancrer le cadre 59 au sol, même lorsque ce dernier présente une pente accentuée.In Figure 5, there is shown another simplified embodiment of an individual multidirectional outdoor lighting support 59. The outdoor frame 59 consists of a plurality of simple arms such as 60 pivotally mounted by one of their ends directly on the profiles 61 constituting the frame 59. These individual arms 60 are each terminated by a light box 62 articulated on their other end by a simple pivoting articulation 63 or a composite articulation with several degrees of freedom. The open-air frame 59 also comprises a pivoting base 64 shaped into a plate and mounted to pivot around a lower support cross member 65 of the frame 59. The pivoting base 64 is provided with support legs such as 66 which can be released laterally by rotation around the fixing axes such as 67 by means of which they are mounted on the base 64. The support feet 66 are provided with openings such as 68 through which one can engage fixing sardines such as 69 which allow (see Figure 8) to anchor the frame 59 to the ground, even when the latter has a steep slope.
Le cadre de plein air 59 est représenté sorti d'un sac de transport 70, par exemple un sac à dos, dans lequel il est habituellement rangé. Selon une caractéristique intéressante de l'invention, le cadre de plein air 59 constitue entièrement l'armature interne du sac à dos 70 lorsqu'il est rangé dans celui- ci. Il confère ainsi au sac à dos 70 une rigidité supplémentaire facilitant son transport et présente 1'avantage de pouvoir être utilisé immédiatement après avoir été sorti du sac 70. En outre, le sac à dos 70 ainsi formé permet de ranger et de transporter tout objet ou accessoire utile à son utilisateur lorsque celui-ci part faire des prises de vue en extérieur. Selon l'invention, le cadre de plein air 59 présente donc une double utilité, d'une part en tant que support d'éclairage multidirectionnel et d'autre part en tant qu'armature du sac à dos 70 dans lequel il est rangé. Par ailleurs, le sac à dos 70 peut être avantageusement équipé de poches telles que 71 pour accessoires du "type, par exemple, objectifs, piles, accumulateurs, boîtes à filtres ou à lentilles additionnelles ou autres.The outdoor frame 59 is shown taken out of a transport bag 70, for example a backpack, in which it is usually stored. According to an advantageous characteristic of the invention, the open-air frame 59 entirely constitutes the internal frame of the backpack 70 when it is stored in it. It thus gives the backpack 70 an additional rigidity facilitating its transport and has the advantage of being able to be used immediately after having been removed from the bag 70. In addition, the backpack 70 thus formed makes it possible to store and transport any object or accessory useful to its user when he leaves to take pictures outdoors. According to the invention, the outdoor frame 59 therefore has a double utility, on the one hand as a multidirectional lighting support and on the other hand as that frame of the backpack 70 in which it is stored. Furthermore, the backpack 70 can advantageously be equipped with pockets such as 71 for accessories of the "type, for example, objectives, batteries, accumulators, filter boxes or additional lenses or the like.
On peut, sans sortir du cadre de l'invention, prévoir un support d'éclairage multidirectionnel adapté, par exemple, à l'éclairage d'un plateau de spectacle ou des lieux de tournage d'un film. Dans ce cas, le déplacement et l'orientation des supports multidirectionnels individuels et des sources lumineuses pourront avantageusement être assistés par des moteurs, par exemple pas-à-pas à commande directe ou télécommandées. Without departing from the scope of the invention, it is possible to provide a multidirectional lighting support suitable, for example, for lighting a stage or places for filming a film. In this case, the displacement and the orientation of the individual multidirectional supports and of the light sources can advantageously be assisted by motors, for example stepping with direct control or remote control.

Claims

REVENDICATIONS
1. Support multidirectionnel portable d'éclairage, utilisable pour les spectacles ou les prises de vue, constituant un studio portable caractérisé en ce qu'il se compose d'un cadre (1) formé d'un périmètre d'éléments rectilignes profilés (2, 3, 6, 7) sur lesquels sont montées, par des liaisons articulées composites multidirectionnelles (9) des boîtes à lumière (7) et en ce qu'une platine-support (12) pour l'appareil de prise de vue (10) est montée déplaçable le long de la traverse inférieure (2) et inclinable par rapport à celle-ci.1. Portable multidirectional lighting support, usable for shows or shooting, constituting a portable studio characterized in that it consists of a frame (1) formed by a perimeter of profiled rectilinear elements (2 , 3, 6, 7) on which are mounted, by multidirectional composite articulated links (9) light boxes (7) and in that a support plate (12) for the camera (10 ) is mounted movable along the lower crossmember (2) and tiltable with respect thereto.
2. Support selon la revendication 1, caractérisé en ce que les liaisons articulées composites (9) sont montées mobiles par une de leurs extrémités sur l'élément profilé adjacent du cadre (1).2. Support according to claim 1, characterized in that the composite articulated connections (9) are mounted movable by one of their ends on the adjacent profiled element of the frame (1).
3. Support selon la revendication 2, caractérisé en ce que les liaisons composites articulées (9) sont montées mobiles en coulissement le long de l'élément profilé adjacent du cadre (1) et en pivotement par rapport au même élément profilé adjacent du cadre (1).3. Support according to claim 2, characterized in that the articulated composite connections (9) are mounted so as to slide along the profiled element adjacent to the frame (1) and to pivot relative to the same profiled element adjacent to the frame ( 1).
4. Support selon l'une quelconque des revendications précédentes, caractérisé en ce que les liaisons composites articulées (9) sont formées d'une liaison à axes croisés (27) et d'une liaison articulée d'extrémité (31).4. Support according to any one of the preceding claims, characterized in that the articulated composite connections (9) are formed by a cross-axis connection (27) and an articulated end connection (31).
5. Support selon la revendication 4, caractérisé en ce que la liaison à axes croisés (27) est formée d'un bloc d'articulation de base (28) monté sur le cadre (1) et d'un bloc d'articulation d'extrémité (29) reliés entre eux par une tige-guide (30). 5. Support according to claim 4, characterized in that the cross-axis connection (27) is formed by a basic articulation block (28) mounted on the frame (1) and an articulation block d end (29) interconnected by a guide rod (30).
6. Support selon la revendication 4, caractérisé en ce que la liaison articulée d'extrémité (31) est formée de deux biellettes (32) et (33) articulées entre elles par une extrémité commune et chacune articulée au niveau de leur autre extrémité respectivement au bloc d'articulation d'extrémité (29) adjacent et à la boîte à lumière (7). 6. Support according to claim 4, characterized in that the articulated end connection (31) is formed by two rods (32) and (33) articulated together by a common end and each articulated at their other end respectively to the adjacent end articulation block (29) and to the light box (7).
7. Support selon l'une quelconque des revendications précédentes, caractérisé en ce que les boîtes à lumière (7), de forme générale parallélépipèdique, présentent une face avant (43) munie d'un ensemble diffuseur (44) pouvant recevoir un ou plusieurs filtre(s) optique(s) amovible(s) et une face arrière (45) pouvant recevoir un cache (46), par exemple de forme générale pyramidale, prolongé par une fibre optique (47).7. Support according to any one of the preceding claims, characterized in that the light boxes (7), of generally parallelepiped shape, have a front face (43) provided with a diffuser assembly (44) capable of receiving one or more removable optical filter (s) and a rear face (45) capable of receiving a cover (46), for example of general pyramidal shape, extended by an optical fiber (47).
8. Support selon l'une quelconque des revendications précédentes, caractérisé en ce que la platine-support (12) comprend une tablette (54) qui prend appui sur la traverse inférieure (2) du cadre (1) et est rabattable par pivotement autour d'un axe transversal à cette traverse inférieure (2) par l'intermédiaire d'une charnière (55).8. Support according to any one of the preceding claims, characterized in that the support plate (12) comprises a shelf (54) which bears on the lower crosspiece (2) of the frame (1) and is foldable by pivoting around an axis transverse to this lower crosspiece (2) by means of a hinge (55).
9. Support selon l'une quelconque des revendications précédentes, caractérisé en ce que les liaisons articulées (9) sont motorisées.9. Support according to any one of the preceding claims, characterized in that the articulated connections (9) are motorized.
10. Support selon la revendication précédente, caractérisé en ce que les liaisons articulées (9) sont commandées à distance.10. Support according to the preceding claim, characterized in that the articulated connections (9) are remotely controlled.
11. Support selon la revendication 1 caractérisé en ce que la surface du cadre est modifiable par déplacement au moins d'une traverse ou au moins d'un montant.11. Support according to claim 1 characterized in that the surface of the frame can be modified by moving at least one cross member or at least one upright.
12. Support selon l'une quelconque des revendications précédentes caractérisé en ce que son contour périmétrique sert d'armature à un sac à dos. 12. Support according to any one of the preceding claims, characterized in that its perimeter contour serves as an armature for a backpack.
EP95924373A 1994-06-30 1995-06-27 Multidirectional lighting stand forming a portable studio Withdrawn EP0716759A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9408255 1994-06-30
FR9408255A FR2723650B1 (en) 1994-06-30 1994-06-30 MULTIDIRECTIONAL LIGHTING SUPPORT, USEFUL FOR SHOWS OR SHOOTINGS, CONSTITUTING A PORTABLE STUDIO
PCT/FR1995/000856 WO1996000927A1 (en) 1994-06-30 1995-06-27 Multidirectional lighting stand forming a portable studio

Publications (1)

Publication Number Publication Date
EP0716759A1 true EP0716759A1 (en) 1996-06-19

Family

ID=9464988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95924373A Withdrawn EP0716759A1 (en) 1994-06-30 1995-06-27 Multidirectional lighting stand forming a portable studio

Country Status (4)

Country Link
EP (1) EP0716759A1 (en)
CA (1) CA2170256A1 (en)
FR (1) FR2723650B1 (en)
WO (1) WO1996000927A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2548650A (en) * 1946-10-02 1951-04-10 Robert J Brandt Adjustable clamp for light shields
JPS56257Y2 (en) * 1975-01-23 1981-01-07
DE4208222C2 (en) * 1992-03-14 1994-08-18 Virtuelle Kybernetik Gmbh Ges Photographing device
US5311409A (en) * 1993-06-14 1994-05-10 Camera World, Inc. Collapsible photographic light diffuser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9600927A1 *

Also Published As

Publication number Publication date
FR2723650B1 (en) 1996-10-04
WO1996000927A1 (en) 1996-01-11
CA2170256A1 (en) 1996-01-11
FR2723650A1 (en) 1996-02-16

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