摘要:
The invention relates to a method for analysing the quality of a glass panel, in particular automobile glass panels, which includes: a step of generating a digital image of a test chart (4) produced by reflection off the outer surface of the glass panel (2) on the outside of the glass panel (2), the test chart (4) having a pattern made up of a plurality of contrasted elements defining interface lines therebetween; a step of calculating representative magnitudes of the glass panel (2) according to the generated image, the calculation being performed by means of a processing unit (8); and a step of comparing the values calculated for the representative magnitudes relative to reference values. The representative magnitudes show a deformation of the test chart image produced by reflection off the outer surface of the glass panel (2).
摘要:
The invention relates to a laminated glass panel intended to be used as the screen of a head-up display system, including: two glass sheets (1, 2), and a viscoelastic plastic insert (3) arranged between the two glass sheets (1, 2). The insert includes at least one layer (3) made of a viscoelastic-plastic having vibroacoustic damping properties, and has a transverse cross-section that decreases in the form of a wedge from the top to the bottom of the laminated glass panel, in which the insert is such that the resonance frequency f of the second resonance mode of a laminated glass panel bar, said glass panel having a 25 mm x 300 mm surface area and consisting of two glass sheets that each have a thickness of 2.1 mm and between which the insert is incorporated, which is determined by measuring the mechanical impedance (MIM) at 20 °C according to ISO standard 16940, is 760 Hz to 100 Hz; and the loss factor η 2 of the second resonance mode of the same bar, which is determined by MIM under the same conditions, is no lower than 0.25. The invention makes it possible to impart the vibroacoustic damping properties to a laminated glass panel intended to be used as the screen of a head-up display system and makes it possible to decrease the thickness of the glass sheets without damaging the vibroacoustic damping properties.
摘要:
The invention relates to a sheet (1, 11, 12) of bent floated glass, the surface area of a main surface of which is higher than 1.5 m 2 and the product of the two bending depths (F, DB) of which is higher than 3000 mm 2 , and such that the point (P) located on the normal to the surface and extending through the barycenter (B) thereof has a curvature radius lower than 3 m in any direction, the variation in the thickness thereof being lower than 10 μm over 500 mm in the longitudinal floating direction (L). Said sheet can be assembled in a vehicle windshield laminated glazing. Such a windshield has a very low ghost image level even when mounted relatively close to the horizontal on a vehicle.
摘要:
The invention relates to a viscoelastic plastic insert intended to be incorporated between two glass sheets in order to form a laminated glass panel having vibroacoustics damping properties, the insert including at least one layer (3) made of a viscoelastic plastic having viscoacoustic damping properties and the insert being tinted in the body at least over a portion of the surface thereof, the insert being such that the resonance frequency f 2 of the second resonance mode of a laminated glass panel bar, said glass panel having a 25 mm x 300 mm surface area and consisting of two glass panels which each have a thickness of 2.1 mm and between which the insert is incorporated, determined by measuring the mechanical impedance (MIM) at 20 °C according to ISO standard 16940, is 760 Hz to 100 Hz; and the loss factor η 2 of the second resonance mode of the same bar, determined by MIM under the same conditions, is no lower than 0.25. The invention makes it possible to decrease the thickness of the glass panels without damaging the vibroacoustic damping properties, all the while respecting the privacy of the persons inside a vehicle or protecting the driver of the vehicle against blinding by sunlight.
摘要:
The invention concerns a rear-view system for a motor vehicle comprising a catadioptric assembly of at least one external or internal rearview mirror (6) including a non-planar mirror (6) and at least one diopter (9) forming part of a side window (5) of the vehicle or integrated thereto, said mirror and said diopter being configured and designed such that the image of the object restored by the mirror-diopter assembly is not substantially deformed and such that the blind spot or zone not covered by said system is minimized.
摘要:
The invention relates to a laminated glass panel intended to be used as a screen of a head-up display system, including: two glass sheets (1, 2), a viscoelastic plastic insert (3) arranged between the two glass sheets (1, 2), the insert including at least one layer (3) made of viscoelastic plastic having vibroacoustic damping properties and the insert comprising particles having an infrared-radiation filtering function, in which the insert is such that the resonance frequency f of the second resonance mode of a laminated glass panel bar, said glass panel having a 25 mm x 300 mm surface area and consisting of two glass sheets which each have a thickness of 2.1 mm and between which the insert is inserted, determined by measuring the mechanical impedance (MIM) at 20 °C according to ISO standard 16940, is 760 Hz to 100 Hz; and the loss factor η 2 of the second resonance mode of the same bar, determined by MIM under the same conditions, is no lower than 0.25. The invention makes it possible to impart the vibroacoustic damping properties to a laminated glass panel intended to be used as the screen of a head-up system and makes it possible to decrease the thickness of the glass sheets without damaging the vibroacoustic damping properties.
摘要:
The invention relates to a viscoelastic plastic interlayer intended to be incorporated between two glass sheets in order to form a laminated glazing unit having vibroacoustic damping properties, the interlayer comprising at least one film (3) made of a viscoelastic plastic having vibroacoustic damping properties, the interlayer being such that the resonant frequency f 2 of the second resonant mode of a 25 mm × 300 mm strip of laminated glazing unit composed of two 2.1 mm-thick glass sheets between which the interlayer is incorporated, determined by the mechanical impedance method (MIM) at 20°C according to standard ISO 16940, is comprised between 760 Hz and 1000 Hz and the loss factor η 2 of the second resonant mode of the same strip, determined by MIM under the same conditions, is greater than or equal to 0.25. The invention allows the thickness of the glass sheets to be decreased without degrading vibroacoustic damping properties.
摘要:
The invention concerns a rear-view system for a motor vehicle comprising a catadioptric assembly of at least one external or internal rearview mirror (6) including a non-planar mirror (6) and at least one diopter (9) forming part of a side window (5) of the vehicle or integrated thereto, said mirror and said diopter being configured and designed such that the image of the object restored by the mirror-diopter assembly is not substantially deformed and such that the blind spot or zone not covered by said system is minimized.