Methods for preparing multi-layer optical laminates include placing an optical film that is free form an adhesive layer between first and second glass substrates that are free of an adhesive layer, placing this laminate under vacuum, and then heating the laminate under pressure to a temperature above the softening temperature of the optical film. The glass substrates are free of an adhesive layer but may include a silane surface treatment. The resulting multi-layer laminate is optically clear and does not show scattering of reflected light by the optical film.

An optical device is provided in the present application. The present application provides an optical device capable of varying transmittance, and such optical device can be used for various applications, such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.

An integrated glazing with a data transponder embedded between layers of glass is disclosed. The data transponder stores and processes data. The integrated glazing also includes a display unit including display elements disposed between layers of glass, communicating with the data transponder. The integrated glazing may comprise a data channel, a power channel, antenna and chip. An intelligent system is also disclosed including the integrated glazing, a reader device and a control system. The reader device is communicably coupled to the integrated glazing to generate signals based on the received data. The control system is communicably coupled to the integrated glazing and the reader device to process signals received from the reader device and perform pre-defined operations in response to the instructions and received signals.

A method according to this disclosure includes stacking a first glass sheet, a first interlayer, a film, a second interlayer, and a second glass sheet to provide a lamination stack, wherein the film has a first film edge that is a first distance from a first edge of the lamination stack to provide a first film cutback; deairing the lamination stack; and autoclaving the lamination stack to provide the laminated glazing, wherein the film shrinks during autoclaving wherein a seal formed during deairing is sufficient such that no air is introduced to the lamination stack during autoclaving and no air is left in the laminated glazing.

An optical device is provided in the present application. The present application provides an optical device capable of varying transmittance, and such optical device can be used for various applications such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.

A method for manufacturing a solar-control laminated glass including an outer and inner glass plate and an interlayer sandwiched between the outer and the inner glass plate, the method including providing the outer glass plate and the inner glass plate; forming a solar-control coating on a surface of at least one of the outer glass plate and the inner glass plate; heating the outer glass plate and the inner glass plate; hot-bending the heated outer glass plate and the heated inner glass plate respectively to obtain a glass-plate shape suitable for a subsequent pairing; pairing the hot-bent outer glass plate and the hot-bent inner glass plate, and inserting the interlayer between the outer glass plate and the inner glass plate to form an assembly; and heating and pressurizing the assembly to laminate the outer glass plate, the interlayer, and the inner glass plate together to form a laminated glass.

Methods for preparing multi-layer optical laminates include placing an optical film that is free form an adhesive layer between first and second glass substrates that are free of an adhesive layer, placing this laminate under vacuum, and then heating the laminate under pressure to a temperature above the softening temperature of the optical film. The glass substrates are free of an adhesive layer but may include a silane surface treatment. The resulting multi-layer laminate is optically clear and does not show scattering of reflected light by the optical film.

A composite film may include a discontinuous silver-based functional film, and a PVB over-layer overlying the discontinuous silver-based functional film. The composite film may have an R/sq value of at least about 30 Ohm/sq.

An asymmetric glazing laminate (34) that includes an outer transparency (36) and an inner transparency (50) that are maintained together by an interlayer (44). Outer transparency (36) has a nominal thickness (42) of 2.1 mm and inner transparency (50) has a nominal thickness of 1.2 mm. The asymmetric glazing has greater stone impact resistance and lower per unit weight than symmetric glazing laminate (10) in which the outer and inner transparencies (12 and 26) each have nominal thickness of 2.1.

A polymer interlayer comprising a layer comprising a poly(vinyl acetal) resin having a residual hydroxyl content and a residual acetate content, and a plasticizer, wherein the residual hydroxyl content, the residual acetate content and the plasticizer are selected such that the polymer interlayer has at least one glass transition temperature less than about 20 C. and a peak tan delta of greater than 1.29, and a glass panel having a configuration of 2.3-mm glass//interlayer//2.3-mm glass and at 20 C. has a transmission loss, TL.sub.w, of greater than 41 decibels as measured by weighted average sound transmission loss at 2000 to 8000 Hz, and a transmission loss, TL.sub.c, of greater than 38 decibels at the coincident frequency is disclosed.