BE1000577A7

BE1000577A7 - Animated sign using rotating solid body - is illuminated by stroboscopic lighting to give effect of motion

Info

Publication number: BE1000577A7
Application number: BE8700596A
Authority: BE
Original assignee: Sweijd Frank
Priority date: 1987-05-27
Filing date: 1987-05-27
Publication date: 1989-02-07

Abstract

The animated sign, for use e.g in art, advertising or toys, consists of a rotating solid object in the shape of a disc, drum or sphere. It can be made from wood, metal, plastics or a composite material, with dimensions which can vary from a few centimetres to several metres. It is illuminated by a stroboscopic light as it rotates. Depending on its shape, the solid body can rotate about a horizontal or vertical axis, driven by a motor through a normal transmission system such as a belt, gears, a rack or an endless screw. The stroboscopic illumination creates an impression of movement on the surface of the solid object, lighting it for periods of 1/400th to 1/2000th of a second at a time.

Description

       

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  Disque, tambour ou spère recouverts de signes et tournant sur eux-mêmes sous un éclairage stroboscopique. 



  Cette invention concerne tout appareil de communication visuelle   animéé   tant dans le domaine des arts plastiques que dans la publicité que dans l'industrie du jeu et-du jouet : cette invention permet d'animer toute image ou tout objet grâce ä l'éclairage stroboscopique. 



  Dans un film cinématographique, le mouvement est asSuré par la projection 
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 d'images fixes au rhytme de 24 images ä la seconde. Du type même de cette projection découle une série   d'inconvéniants :   -nécessité d'observer la projection dans des conditions strictes de lumière. 



  - rythme d'images très élevé pour suggérer le mouvement. 



  -impossibilité d'avoir un relief car il s'agit d'une projection d'images (2 dimentions). 



  Notre procédé remédie ä ces   inconvéniants   car tel qu'il sera mentionné dans la description, it recrée tout mouvement par la décomposition de celui-ci en une suite d'attitudes fixes puis en les éclairant avec un stroboscope lors de leur mise en mouvement. 



  Du type de solution retenue découle une série d'avantages par rapport au procédé cinématographique:   -le   rythme de défilement des phases est indépendant du mouvement (par exemple, 8 images suffisent   ä   recréer un mouvement)   - i 1   est possible de donner un relief au mouvement par l'adjonction sur la surface non plus d'images mais d'objets 

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 - il n'est plus requit d'observer l'invention sous des conditions de lumière strictes pour peu que J'éclairage stroboscopique soit dominant   ä   la surface du disque, du tambour ou de la sphère. 



  La description exposée ci-après ne représente qu'une parmi tant d'autres façons de réaliser cette invention. Vous pourrez vous réferrer aux schémas pour une meilleure compréhension du système. Prenons un disque vu en perspective ( ) à la surface duquel sont positionnés dans un ordre bien déterminé des objets en relief (prenons-en 12 par exemple). Obser-    rez )   que chaque objet est légèrement différent de celui qui le précède et de celui qui le suit : cette difference a pour but de décomposer, par exemple, en 12 moments précis l'ensemble du mouvement.

   Lorsque le disque se mettra ä tourner sur lui-même autour d'un axe fixe grace   ä   un moteur électrique et lorsque l'éclairage stoboscopique fonctionnera, it se formera alors ä la surface du disque qui lui semblera immobile, une animation d'un objet   coherent   La vitesse de rotation du disque est fonction du nombre de phases du mouvement (ici 12) et de la période de 1'éclairage stroboscopique.



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  Disc, drum or sphere covered with signs and spinning on themselves under strobe lighting.



  This invention relates to any animated visual communication device both in the visual arts, in advertising and in the game and toy industry: this invention makes it possible to animate any image or any object thanks to stroboscopic lighting.



  In a cinematographic film, movement is ensured by projection
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 still images at the rate of 24 images per second. From the very type of this projection follows a series of drawbacks: -necessity to observe the projection in strict light conditions.



  - very high frame rate to suggest movement.



  -impossibility of having a relief because it is a projection of images (2 dimensions).



  Our method overcomes these drawbacks because, as will be mentioned in the description, it recreates any movement by decomposing it into a series of fixed attitudes and then lighting them up with a stroboscope when they are set in motion.



  From the type of solution adopted, a series of advantages compared to the cinematographic process follows: movement by adding to the surface no more images but objects

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 - It is no longer required to observe the invention under strict light conditions provided that the strobe lighting is dominant on the surface of the disc, the drum or the sphere.



  The description set out below is only one of many other ways of making this invention. You can refer to the diagrams for a better understanding of the system. Take a disc seen in perspective () on the surface of which are placed in a well-defined order objects in relief (take 12 for example). Observe) that each object is slightly different from the one that precedes and the one that follows it: the purpose of this difference is to break down, for example, into 12 precise moments the whole movement.

   When the disc starts to turn on itself around a fixed axis thanks to an electric motor and when the stoboscopic lighting works, it will then form on the surface of the disc which will appear motionless, an animation of an object coherent The speed of rotation of the disc is a function of the number of phases of the movement (here 12) and of the period of the strobe lighting.

Claims

CLAIM 1. Any disc, drum or sphere which covered with signs, drawings, objects or any other motif and used in conjunction with stroboscopic lighting have a movement such that the disc places in a vertical or horizontal plane, the exposed side towards the observer, either attached in its center to a horizontal or vertical axis which itself rests on a stable vertical or horizontal support. Against the support is a motor or any other form of mechanical energy which transmits to the axis of the disc the rotational movement using a conventional system of transmission by belt, gear, rack or worm.

-the drum or the sphere are fixed on a horizontal or vertical axis which rests itself on 2 bipods placed at each end of the drum or the sphere. The motor or any other form of mechanical energy, EMI3.1 dragging the drum or the sphere in the same way as the disc, is at any place next to one of the bipods.

2. This system is moreover characterized by the simultaneous use - on all surfaces of an adequate mode of graphic representation depending on the concept or idea, an object, a figurine or any other System are equivalent in its purpose.

-a strobe light whose power allows correct illumination of the surface of the disc, drum or sphere and whose duration of the flash is for example between 1/400 and 1/20000 of a second.

- a rotation speed in relation to the period of the strobe light. These 3 characteristics used together will allow the animation of the object itself, the figurine itself or any other graphic use. <Desc / Clms Page number 4>

3. The invention as claimed in claim 1. in which the materials used for the production of the disc, drum or sphere may be made of wood, of plastic metal or of various composite materials. The dimensions can also vary from a few centimeters to several meters. No special manufacturing and assembly techniques are required as long as there is no torsion during rotation.