WO2013098678A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
WO2013098678A1
WO2013098678A1 PCT/IB2012/056943 IB2012056943W WO2013098678A1 WO 2013098678 A1 WO2013098678 A1 WO 2013098678A1 IB 2012056943 W IB2012056943 W IB 2012056943W WO 2013098678 A1 WO2013098678 A1 WO 2013098678A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveying cloth
cloth
rod
conveying
rods
Prior art date
Application number
PCT/IB2012/056943
Other languages
English (en)
Inventor
Fabrizio ZAMPETTI
Emanuele D'AMICO
Original Assignee
Zampetti Fabrizio
D Amico Emanuele
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 Zampetti Fabrizio, D Amico Emanuele filed Critical Zampetti Fabrizio
Publication of WO2013098678A1 publication Critical patent/WO2013098678A1/fr

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

Definitions

  • the present invention refers to a lighting device in the photography field, in particular for diffusion and conveyance of light produced by a lighting member.
  • softbox In the field, these devices are known under the name of "softbox”. Therefore, in the present description, by the term softbox it is meant a fitting suitable for a precise and uniform conveyance of light produced by a lighting member.
  • structure rods are therefore connectible which serve to prop the entire softbox.
  • the number and position of the structure rods connected thereto can vary depending on the form of the softbox.
  • the rods are in general metallic, whole and flexible, apt to connect a conveying cloth to the support, tensioning the cloth itself and thereby forming the final peripheral structure of the softbox.
  • the external conveying cloth has the purpose of forming the structure and therefore defining the size thereof. It has to meet the following needs: guarantee internally the maximum reflecting power and reduce to a minimum the dispersion of light to the outside of the structure.
  • an external diffusing web is nearly always present. It is a tight-woven translucent web, fastened to the external cloth. Its function is that of "spreading" lights, making the emission of light by the lighting member softer and photographically more beautiful.
  • a further internal diffusing web can be present, fastened to the external cloth and placed at a variable distance between the external diffusing web and the support of the lighting member. Precise dimensions and distances enable to uniform the emission of light between the center and the edges of the softbox.
  • the problem to be solved was therefore to succeed to combine sizes and qualities comparable to those of professional softboxes, concomitantly maintaining extremely reasonable weight and volume for improved ease of transport and simplicity of assembly.
  • Object of the present invention is to solve the numerous problems still left open by the known art, and this is attained by a device as defined in claim 1 .
  • the present invention by overcoming the mentioned problems of the known art, entails several evident advantages.
  • the invention allows the photographer to rely on different sizes of softbox without having to select in advance the equipment to be utilized, always bringing along a complete set of large-size softboxes in a simple backpack.
  • the invention being contrived, above all, for on-location photographic services, having no specific differences with respect to a traditional studio softbox, it is deemed that even who mainly makes photographic services in a studio might prefer an equipment lighter in weight and less bulky once put away.
  • one of the particularly advantageous aspects of the present invention lies precisely in the possibility of making the device assume an operating configuration and a resting configuration. In other words, it is a completely foldable and re-closeable device.
  • Transit from the resting configuration to the operating one, and vice versa is particularly rapid, thanks to the shape of the rods of the device and to the typology of materials selected.
  • the device entails a remarkable difference in terms of volume between the operating configuration and the resting one; therefore, when resting it actually takes up an extremely reduced space, though being able to assume decidedly high dimensions when it is operating.
  • Figure 1 is a view of the structure of a partially assembled device according to the present invention, ;
  • FIG. 2A to 2C show one of the structure rods according to the present invention, and its folding mode
  • Figure 3A is a rear perspective view of an assembled device according to the present invention.
  • Figures 3B, 3C are details of Figure 3A;
  • Figures 4A and 4B refer to a particular shape of the rods according to an alternative embodiment of the present invention
  • Figure 5 is a front perspective view of an assembled device according to the present invention, ;
  • Figure 6A is a view of an internal diffusing web according to the present invention.
  • FIG. 6B is a front perspective view of a device according to the present invention, with the internal diffusing web partially assembled;
  • Figure 7A is a view of an external diffusing web according to the present invention.
  • Figure 7B is a front perspective view of a device according to the present invention, with the external diffusing web partially mounted.
  • Figure 1 shows a support structure of a device 1 according to the present invention.
  • the device 1 comprises first of all a support 2 for a lighting member 8. Then, the structure comprises some structure rods 3 apt to be made integral to the support 2.
  • the device provides four structure rods 3, arranged at the corners of a substantially pyramid-shaped volume having a quadrangular base.
  • the number and dimensions of the rods could vary depending on the shape and dimensions that are to be obtained for the device.
  • the structure rods are such that, in an operating configuration thereof, they are completely extended and prove to be flexible, so that they can tension a conveying cloth 10 for conveyance of light emitted from the lighting member 8.
  • each one of the rods 3 can however assume two configurations, an operating one as described above, and a resting one. In the resting configuration, each rod is folded into two or more rod portions 4. Such configuration is illustrated in next Figures 2A to 2C.
  • the rods 3 are preferably made of aluminum. They are of substantially cylindrical section and tubular.
  • the portions 4 are connectible therebetween at ends thereof, so as to form overall a single extended rod 3.
  • junction means or joint means of various type may be provided, from bayonet joints to hinges. A person skilled in the field could choose the preferred junction mode, depending on design needs.
  • the rod portions 4 are internally connected therebetween by means of an elastic member 5 which, preferably, is passing through all rod portions 4 constituting a rod 3 and fastened at both ends of the terminal portions, i.e. of the rod itself.
  • each rod has a reinforced region for bearing the great strains developed in the point of jointing with the support 2 of the lighting member 8.
  • a pin 7 can be provided, apt to be inserted into a corresponding slot 15 made on the conveying cloth, as visible in Figures 3B and 3C.
  • the material used for the manufacturing of the conveying cloth 10 be specifically selected.
  • the conveying cloth 10 is made of a single fabric and not through overlap of plural fabrics/materials coupled to each other.
  • a conveying cloth 10 of this material is therefore in a finish of a dark color, preferably black, in the portion 1 1 remaining outside the concavity when the device is in use, and in a reflective finish in the portion 13 remaining inside the concavity when the device is in use.
  • the reflective finish can be obtained by means of a silver varnish spread on the cloth.
  • the device provides a member 12 for thickening the cloth at the support 2 for the lighting member 8.
  • Said thickening member is, preferably, a grey-colored flat print apt to seal fabric pores near the lighting member, thereby isolating to a greater extent light that might come out of the softbox.
  • the device comprises a plurality of rods 3, whose number depends on the final shape that is to be obtained.
  • the conveying cloth 10 comprises a plurality of through slots 16 for housing the rods 3.
  • the through slots be made on the external portion of the conveying cloth 10.
  • the conveying cloth 10 at its vertexes comprises respective detent members 15, e.g. metallic slots.
  • Each of such detent members is apt to cooperate with an end pin 7 of a respective rod 3, so that, in the operating configuration, the cloth be fully stretched.
  • further eyelets 24 can be provided, close to the points of jointing of the rods on the cloth itself, as shown in Figure 3D.
  • Such further eyelets 24 are contrived to enable a stabilization by anchoring of the device to the ground or to other existing structures, in order to oppose the effect of wind.
  • the rods 3 that, as already indicated, are preferably made of hollow aluminum, have a precurved region 25, for facilitating the insertion of the terminal end 7 in the detent slot
  • the conveying cloth 10 may have, advantageously, removable fastening members, e.g. of Velcro® type.
  • Such members allow a quick and simple fastening thereof and concomitantly prevent light from coming out from those zones about the lighting member that would inevitably remain uncovered.
  • an internal diffusing web 20, anchorable to the conveying cloth 10, may be provided.
  • the internal diffusing web 20 comprises a plurality of hooks 21 for anchoring to respective anchoring members 22 present on the conveying cloth 10, for instance at specific points of the internal corners.
  • an external diffusing web 30 it also anchorable to the conveying cloth 10.
  • the external diffusing web may be equipped with a peripheral member 31 of Velcro ® for anchoring to a respective peripheral member 32 of Velcro ® present on an edge of said conveying cloth 10.
  • Both the internal diffusing web 20 and the external diffusing web 30 are, according to the present invention and for what said above, made of 190T polyester and in particular of a translucent white coloring.
  • the device 1 made according to the present invention was compared with a known- type softbox, and various tests were performed to test the different aspects thereof.
  • the extreme lightness of weight of the conveying cloth causes in the device according to the present invention a greater dispersion of light in the environment with respect to a generic Softbox.
  • the test was performed using a precision balance capable of a weighing sensitivity of tenths of grams.
  • the greater saving of weight is attributable to the structure rods, for which the device according to the present invention can boast a -56%, and to the external conveying cloth of 190T polyester, for which the device according to the present invention can boast a -73%.
  • the device according to the present invention allows a relevant saving of volume, quantifiable in about a -62%.
  • the most interesting data is that related to the encumbrance of the disassembled device, and therefore the length of a bag for its transport. From about 95 cm of a standard bag, to 37cm (-61 .1 %). This deviation enables the device according to the present invention to be transported in a standard backpack.
  • the test was performed by taking three photos of a 24 color-notch Chart. For each photo, the 24 color-notches were sampled and RGB values of each color were sampled. Subsequently, values were compared considering deviations in percentage points; from the test it is possible to understand what type of chromatic variation is obtained by utilizing a Softbox, and what type of difference exists between a generic Softbox and the innovative Softbox proposed herein.
  • the first photo was taken without Softbox use, naked-bulb; on this photo a white- point sampling was carried out, applied then to the other two photos.
  • the values obtained from this photo represent reference data for understanding chromatic variations of the other two photos. Diaphragm values: f16.
  • Softbox PRL The third photo was taken with a generic Softbox, marked in the Table by the abbreviation "Softbox PRL”.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

L'invention concerne un dispositif d'éclairage utilisé dans le domaine de la photographie, notamment pour la diffusion et l'acheminement d'une lumière produite par un élément d'éclairage. L'invention permet à un photographe d'utiliser différentes tailles de boîte à lumière sans devoir choisir à l'avance l'équipement à utiliser en amenant en permanence un ensemble complet de boîtes à lumière professionnelles dans un simple sac à dos.
PCT/IB2012/056943 2011-12-27 2012-12-04 Dispositif d'éclairage WO2013098678A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM2011A000688 2011-12-27
IT000688A ITRM20110688A1 (it) 2011-12-27 2011-12-27 Dispositivo per l'illuminazione.

Publications (1)

Publication Number Publication Date
WO2013098678A1 true WO2013098678A1 (fr) 2013-07-04

Family

ID=45809476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/056943 WO2013098678A1 (fr) 2011-12-27 2012-12-04 Dispositif d'éclairage

Country Status (2)

Country Link
IT (1) ITRM20110688A1 (fr)
WO (1) WO2013098678A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2505485A (en) * 2012-08-31 2014-03-05 Manfrotto Uk Ltd Photographic lightbox
US20160018079A1 (en) * 2013-12-17 2016-01-21 Chien-Ting Lin Light cover with x-shaped structure
EP3296624A1 (fr) * 2016-09-20 2018-03-21 Hubert Adamczyk Boitier souple
WO2019097048A1 (fr) * 2017-11-20 2019-05-23 Vitec Imaging Solutions Uk Limited Boîte de diffusion de lumière pliable
WO2019151921A1 (fr) * 2018-01-30 2019-08-08 Profoto Aktiebolag Dispositif de commande de lumière pour fixation sélective à des dispositifs réflecteurs
WO2019151925A1 (fr) * 2018-01-30 2019-08-08 Profoto Aktiebolag Dispositif parapluie comprenant des baleines extérieures
DE102019111015A1 (de) * 2019-04-29 2020-10-29 Zündt's Filmgeräteverleih GmbH Vorrichtung zur Ausleuchtung eines Motivbereichs
DE102019111014A1 (de) * 2019-04-29 2020-10-29 Zündt´s Filmgeräteverleih GmbH Vorrichtung zur Ausleuchtung eines Motivbereichs
DE102022103527A1 (de) 2021-02-16 2022-08-18 Stefan Karle Beleuchtungsvorrichtung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873821A (en) * 1973-11-09 1975-03-25 Raymond George Larson Grommet secured and reversible light reflecting device
US5023756A (en) * 1989-06-13 1991-06-11 Regester Gary L Light diffusion box
US5373422A (en) * 1992-02-13 1994-12-13 Hodkinson; John M. Light panels
US6491405B1 (en) * 1999-11-20 2002-12-10 John E. Shirilla Photographic umbrella with reflective and diffusive linings
US20030024660A1 (en) * 1998-10-09 2003-02-06 Homeyer Shelley M. Convertible collapsible barrier
WO2003071351A1 (fr) 2002-02-23 2003-08-28 Lastolite Ltd Dispositif d'eclairage photographique
CN2600839Y (zh) 2002-11-19 2004-01-21 广东普思贸易有限公司 反射式柔光箱
US20040188041A1 (en) * 2003-03-25 2004-09-30 Cameron Ronald A. Portable screen assembly
US20050088836A1 (en) * 2003-10-28 2005-04-28 Chimera Company Removable lightbank extension

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873821A (en) * 1973-11-09 1975-03-25 Raymond George Larson Grommet secured and reversible light reflecting device
US5023756A (en) * 1989-06-13 1991-06-11 Regester Gary L Light diffusion box
US5373422A (en) * 1992-02-13 1994-12-13 Hodkinson; John M. Light panels
US20030024660A1 (en) * 1998-10-09 2003-02-06 Homeyer Shelley M. Convertible collapsible barrier
US6491405B1 (en) * 1999-11-20 2002-12-10 John E. Shirilla Photographic umbrella with reflective and diffusive linings
WO2003071351A1 (fr) 2002-02-23 2003-08-28 Lastolite Ltd Dispositif d'eclairage photographique
CN2600839Y (zh) 2002-11-19 2004-01-21 广东普思贸易有限公司 反射式柔光箱
US20040188041A1 (en) * 2003-03-25 2004-09-30 Cameron Ronald A. Portable screen assembly
US20050088836A1 (en) * 2003-10-28 2005-04-28 Chimera Company Removable lightbank extension

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2505485A (en) * 2012-08-31 2014-03-05 Manfrotto Uk Ltd Photographic lightbox
GB2505485B (en) * 2012-08-31 2014-11-26 Manfrotto Uk Ltd Improvements relating to photographic lighting apparatus
US20160018079A1 (en) * 2013-12-17 2016-01-21 Chien-Ting Lin Light cover with x-shaped structure
US9523904B2 (en) * 2013-12-17 2016-12-20 Chien-Ting Lin Light cover with x-shaped structure
EP3296624A1 (fr) * 2016-09-20 2018-03-21 Hubert Adamczyk Boitier souple
WO2018054657A1 (fr) * 2016-09-20 2018-03-29 Hubert Adamczyk Boîte souple
WO2019097048A1 (fr) * 2017-11-20 2019-05-23 Vitec Imaging Solutions Uk Limited Boîte de diffusion de lumière pliable
WO2019151921A1 (fr) * 2018-01-30 2019-08-08 Profoto Aktiebolag Dispositif de commande de lumière pour fixation sélective à des dispositifs réflecteurs
WO2019151925A1 (fr) * 2018-01-30 2019-08-08 Profoto Aktiebolag Dispositif parapluie comprenant des baleines extérieures
DE102019111015A1 (de) * 2019-04-29 2020-10-29 Zündt's Filmgeräteverleih GmbH Vorrichtung zur Ausleuchtung eines Motivbereichs
DE102019111014A1 (de) * 2019-04-29 2020-10-29 Zündt´s Filmgeräteverleih GmbH Vorrichtung zur Ausleuchtung eines Motivbereichs
US11982923B2 (en) 2019-04-29 2024-05-14 Zündt's Filmgeräteverleih GmbH Apparatus for illuminating a subject area
DE102022103527A1 (de) 2021-02-16 2022-08-18 Stefan Karle Beleuchtungsvorrichtung

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