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
  • G03B21/00—Projectors or projection-type viewers; Accessories therefor
  • G03B21/54—Accessories
  • G03B21/56—Projection screens
  • G03B21/565—Screens allowing free passage of sound

Definitions

• the cinema screens are perforated canvas to let the sound, the texture is thick and returns the direct light from the projector. Only the overhead projector screens are transparent to let the rays coming from behind the screen. This overhead projector technology does not provide large screen areas.
• Two observations of natural phenomena oblige us to take into account the facts that firstly all objects absorb some of the light and reject the visible colors that are not absorbed, the second is that the ambient light comes from all sides, including from behind the object with all the degrees of incidence of light diffractions reflected therein. These two facts constitute the motivation for this filing of a patent application. Indeed the use of a multitude of light source in the background of the screen can restore a balance of natural light that does not exist on the current cinema screens. We have deposited a PCT deposition screen No.
• FR2006 / 000073 which is the use of a multilayer screen whose multilayer bottom is a highly reflective surface composed for example of a micronized aluminum foil or aluminum or silver projected under vacuum, the layer is translucent, the other layers being translucent or transparent, the assembly greatly increasing the luminous diffractions of the projector.
• the effect is optionally reinforced by droplet micros or transparent microbeads placed between the layers of the multilayer.
• This screen is made with metalloplastic films that have the property of being fine and let pass, filter a low intensity of diffuse light soft silvered or aluminized background film.
• This principle of added lights in the background of the screen adds an expensive counter-light to the quality of the light of the images which allows to obtain an image vision in a real natural balance of the colors and perspectives of shape of the objects.
• the rear stable lights provide visual comfort and chromatic stability that enormously amplify the diffractions.
• the chromatic and the density of the lights are regulated by this principle made possible by the translucent bottom layer, and the rear lights which give a projection in conformity with the optical sensitivity of the eye and the nervous system, the projection is not aggressive. Contrast variations are not useful, while the amount of information of sensitive variations of all the lights is crucial, satisfied by the present application.
• the large amount of soft variation of the lights is more effective than the intensity variation of the harsh direct harsh contrast of the projector which mutes the image and tires the view.
• This screen principle offers a visual comfort and a relief image reading accuracy, possible by the metalloplastic film that manages the balance on the front and back side of the direct and indirect light.
• the metalloplastic films have thicknesses of up to 100 or even 200 microns, which allows to guess a source of light that merges with the projection providing a regularization of the light amplitudes favorable to the comfortable vision of the film.
• This screen also allows the diffusion of sound waves, indeed its fine structure lets the sound pass without alteration in frequency or intensity.
• the screen (1) is 1.5 meters high and 2.5 meters wide and consists of a homogeneous multilayer film without holes.
• the film constituting the screen is placed on a frame (2) to be stretched.
• the screen is laid stretched either glued or held by pinching.
• Neon tubes can therefore fulfill the requested functions.
• acoustic loudspeakers (5, 6) can be installed in order to diffuse the soundtrack of the films presented.
• the screen is acoustically transparent due to its elasticity to the audio frequency ranges, a slight linear attenuation of low correction slope on the bass is compensated without problem.
• the back of the frame is closed to prevent any scattering of light in the room where the vision of the film takes place.
• FIG.2 shows in section AA the device of 7 (I to 7) sound baffles also preventing light from passing through, the baffles made of wood or injected plastic or polymer for example are made in black or coated with a black color not dissipating the light.
• the number of baffles is realized by those skilled in the art. This type of screen simplifies the size of a home theater system, at home or in a professional room, to have a compact set of high quality audio visual.
• the visual audio representations in the narrow conditions of a stand or event in a truck for example is simplified by this implementation giving excellent results in quality in the two distinct areas of the image on the one hand, and secondly in the field of sound broadcasting, it is a plus for the world of audio visual.
• This configuration linking sound and image are the ideal conditions for sensory perception of the cognitive functions of the brain by the highly sensitive common point of diffusion that constitutes the metalloplastic film.
• Amplifier technology can also be inserted into the cabinet on one side.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Transforming Electric Information Into Light Information (AREA)
• Video Image Reproduction Devices For Color Tv Systems (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=39535494

Family Applications (1)

Country Status (3)

Families Citing this family (5)

Family Cites Families (8)

• 2007
  • 2007-09-24 EP EP07858377A patent/EP2193402A1/de not_active Withdrawn
  • 2007-09-24 US US12/679,833 patent/US8040603B2/en not_active Expired - Fee Related
  • 2007-09-24 WO PCT/FR2007/001550 patent/WO2009040480A1/fr not_active Ceased

Non-Patent Citations (1)

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