CH371688A - Device for adjusting the aperture of a beam of light intended to illuminate an object - Google Patents

Device for adjusting the aperture of a beam of light intended to illuminate an object

Info

Publication number
CH371688A
CH371688A CH56361A CH56361A CH371688A CH 371688 A CH371688 A CH 371688A CH 56361 A CH56361 A CH 56361A CH 56361 A CH56361 A CH 56361A CH 371688 A CH371688 A CH 371688A
Authority
CH
Switzerland
Prior art keywords
screen
fixed
illuminate
aperture
tube
Prior art date
Application number
CH56361A
Other languages
French (fr)
Inventor
Francioli Rodolphe
Original Assignee
Francioli Rodolphe
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 Francioli Rodolphe filed Critical Francioli Rodolphe
Priority to CH56361A priority Critical patent/CH371688A/en
Publication of CH371688A publication Critical patent/CH371688A/en

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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

Description

  

  Dispositif pour régler l'ouverture d'un     faisceau    de lumière destiné à éclairer un objet    La présente invention a pour objet un dispositif  pour régler l'ouverture d'un faisceau de     lumière    des  tiné à     éclairer    un objet, notamment un objet à pho  tographier, caractérisé     par    le fait     qu'il    comprend un  écran percé d'un orifice en regard duquel est fixé un  tube à     emboîtements    télescopiques de longueur  réglable,

   cet écran étant destiné à être     placé    entre  une     source        lumineuse    et un objet à éclairer de façon  qu'une partie des rayons émis par celle-ci traverse  ledit orifice, le tube étant fixé en aval de l'écran par       rapport    au     sens    de     déplacement    desdits rayons.  



  Le dessin annexé représente, à titre d'exemple,  une forme d'exécution du dispositif objet de l'in  vention.  



  La figure unique en est une vue en élévation  en coupe     partielle.     



  Le dispositif représenté comprend un écran 1 en  tôle ayant la forme d'un     tronc    de cône se prolon  geant en un     cylindre    ; ce dernier présente un     orifice     circulaire axial 2 en regard duquel est fixé un tube 3  à emboîtements télescopiques, l'axe de celui-ci étant  perpendiculaire au plan de l'orifice 2.  



  Le tube 3 comprend un élément intérieur 4 en  tôle, l'une des extrémités de celui-ci étant soudée à       l'écran    1, son autre extrémité présentant un rebord  extérieur 5     servant    de butoir à deux tenons 6 fixés  sur l'une des extrémités d'un     élément    extérieur 7 ;  le rebord 5 est pourvu de deux échancrures 8 en  regard permettant de monter l'élément 7 sur l'élé  ment 4.

      A l'écran 1 est soudé un bras 9 articulé sur une  branche 10 fixée sur le support 11 d'une     source          lumineuse    12 et d'un     réflecteur    13 de celle-ci; le  bras 9 est monté .sur un boulon 14 porté par     1a     branche 10 et présentant un     écrou    à ailettes 15 ; le  support 11 peut     comprendre    deux éléments 16 à  emboîtements,     télescopiques.     



  Le dispositif représenté est utilisé comme suit  Un objet à éclairer, destiné à être photographié  par exemple, est     placé    à l'extrémité aval du tube 3,  par rapport au sens 17 de déplacement des rayons  lumineux émis par la     source    12 ; puis l'élément 7  est déplacé     manuellement        longitudinalement    sur l'élé  ment 4 de façon à régler     l'ouverture    du faisceau de  lumière     éclairant    ledit objet. En faisant pivoter  l'écran 1, on peut également modifier l'orientation  du faisceau lumineux.  



       Il    est prévu dans une variante d'exécution de  monter l'écran 1 sur un support propre indépendant  du support 11 ou de le placer, par exemple, sur le       réflecteur.  



  Device for adjusting the aperture of a light beam intended to illuminate an object The present invention relates to a device for adjusting the aperture of a beam of light intended to illuminate an object, in particular an object to be photographed, characterized by the fact that it comprises a screen pierced with an orifice facing which is fixed a tube with telescopic interlocking of adjustable length,

   this screen being intended to be placed between a light source and an object to be illuminated so that part of the rays emitted by the latter pass through said orifice, the tube being fixed downstream of the screen with respect to the direction of movement of said rays.



  The appended drawing represents, by way of example, an embodiment of the device which is the subject of the invention.



  The single figure is a partial sectional elevation view thereof.



  The device shown comprises a sheet metal screen 1 having the shape of a truncated cone extending into a cylinder; the latter has an axial circular orifice 2 opposite which is fixed a tube 3 with telescopic sockets, the axis of the latter being perpendicular to the plane of the orifice 2.



  The tube 3 comprises an internal element 4 made of sheet metal, one of the ends of the latter being welded to the screen 1, its other end having an outer rim 5 serving as a stopper with two tenons 6 fixed to one of the ends. an external element 7; the rim 5 is provided with two notches 8 facing each other making it possible to mount the element 7 on the element 4.

      To the screen 1 is welded an arm 9 articulated on a branch 10 fixed to the support 11 of a light source 12 and of a reflector 13 thereof; the arm 9 is mounted on a bolt 14 carried by the branch 10 and having a wing nut 15; the support 11 may comprise two elements 16 with interlocking, telescopic elements.



  The device shown is used as follows. An object to be illuminated, intended to be photographed for example, is placed at the downstream end of the tube 3, with respect to the direction 17 of movement of the light rays emitted by the source 12; then the element 7 is moved manually longitudinally on the element 4 so as to adjust the opening of the light beam illuminating said object. By rotating the screen 1, you can also change the orientation of the light beam.



       It is provided in an alternative embodiment to mount the screen 1 on a clean support independent of the support 11 or to place it, for example, on the reflector.

Claims (1)

REVENDICATION Dispositif pour régler l'ouverture d'un faisceau de lumière destiné à éclairer un objet, notamment un objet à photographier, caractérisé par le fait qu'il comprend un écran percé d'un orifice en regard duquel est fixé un tube à emboîtements. télescopi ques de longueur réglable, cet écran étant destiné à être placé entre une source lumineuse et un objet à éclairer de façon qu'une partie des rayons émis par celle-ci traverse ledit orifice, le tube étant fixé en aval de l'écran par rapport au sens de déplacement desdits rayons. CLAIM Device for adjusting the aperture of a beam of light intended to illuminate an object, in particular an object to be photographed, characterized in that it comprises a screen pierced with an orifice facing which is fixed a socket tube. telescopic adjustable length, this screen being intended to be placed between a light source and an object to be illuminated so that part of the rays emitted by the latter passes through said orifice, the tube being fixed downstream of the screen by relative to the direction of movement of said spokes. SOUS-REVENDICATIONS 1. Dispositif selon la revendication, caractérisé par le fait que le tube comprend -au moins deux éléments à emboîtements télescopiques. 2. Dispositif selon la revendication et la sous- revendication 1, caractérisé par le fait que l'élément intérieur présente à son extrémité aval un rebord servant de butoir à deux tenons fixés sur l'élément extérieur. 3. Dispositif selon la revendication et les sous revendications 1 et 2, caractérisé par le fait que l'écran porte un bras articulé sur une branche fixée sur le support de la source lumineuse. SUB-CLAIMS 1. Device according to claim, characterized in that the tube comprises -at least two elements with telescopic interlocking. 2. Device according to claim and sub-claim 1, characterized in that the inner element has at its downstream end a flange serving as a stopper with two tenons fixed to the outer element. 3. Device according to claim and sub claims 1 and 2, characterized in that the screen carries an articulated arm on a branch fixed to the support of the light source.
CH56361A 1961-01-17 1961-01-17 Device for adjusting the aperture of a beam of light intended to illuminate an object CH371688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH56361A CH371688A (en) 1961-01-17 1961-01-17 Device for adjusting the aperture of a beam of light intended to illuminate an object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH56361A CH371688A (en) 1961-01-17 1961-01-17 Device for adjusting the aperture of a beam of light intended to illuminate an object

Publications (1)

Publication Number Publication Date
CH371688A true CH371688A (en) 1963-08-31

Family

ID=4189898

Family Applications (1)

Application Number Title Priority Date Filing Date
CH56361A CH371688A (en) 1961-01-17 1961-01-17 Device for adjusting the aperture of a beam of light intended to illuminate an object

Country Status (1)

Country Link
CH (1) CH371688A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651334A1 (en) * 1989-08-31 1991-03-01 Marietta Jean Jacques Device using cones which can be fitted to a light source, for example of the flash or tungsten type, intended for photographic lighting
US5651602A (en) * 1994-11-17 1997-07-29 Joseph N. Tawil Portable light diffuser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651334A1 (en) * 1989-08-31 1991-03-01 Marietta Jean Jacques Device using cones which can be fitted to a light source, for example of the flash or tungsten type, intended for photographic lighting
US5651602A (en) * 1994-11-17 1997-07-29 Joseph N. Tawil Portable light diffuser

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