A tapered interlayer and windshield employing the same are provided. Unlike conventional windshields, which are optimized to reduce ghost images for a single driver height, the windshields of the present invention may exhibit reduced ghosting for drivers of multiple heights, including very tall or very short drivers, while also providing desirable image clarity for average-height drivers. Windshields as described herein may be used in a variety of applications, including automotive, aircraft, marine, and recreational vehicles that employ HUD projection systems.

The present invention provides an interlayer film for a laminated glass capable of providing a laminated glass that reduces the occurrence of optical distortion, a laminated glass including the interlayer film for a laminated glass, and a method for producing the interlayer film for a laminated glass. Provided is an interlayer film for a laminated glass, having a maximum thickness curvature in a width direction of the interlayer film for a laminated glass of 0.010 m.sup.−1 or less.

A laminated glass capable of producing an observable pattern when edge-illuminated contains two sheets of glass adhered by an adhesive film of at least one film B containing a polyvinyl acetal PB and at least one plasticizer WB; and at least one film A or an area thereof containing a polyvinyl acetal PA and optionally at least one plasticizer WA, wherein the refractive indices of film A and film B differ by at least 0.0002.

The present invention aims to provide an interlayer film for a colored laminated glass which exhibits a visible light transmittance Tv of 5% or lower, small variation in visible light transmittance and an excellent appearance when incorporated in a laminated glass together with two clear glass plates in conformity with JIS R3202 (1996), and a colored laminated glass produced using the interlayer film for a colored laminated glass. Provided is an interlayer film for a colored laminated glass exhibiting a visible light transmittance Tv of 5% or lower when incorporated in a laminated glass together with two clear glass plates in conformity with JIS R3202 (1996), the interlayer film for a colored laminated glass including a laminate of at least two layers including a first resin layer containing a thermoplastic resin and a colorant and a second resin layer containing a thermoplastic resin and no colorant, the first resin layer satisfying a ratio of a difference Δt.sub.1 in thickness between the maximum value t.sub.1max and the minimum value t.sub.1min to an average thickness (Δt.sub.1/average thickness of first resin layer) of 0.30 or less.

The present disclosure relates to a film for bonding including an embossed surface, wherein the embossed surface has a Sku value of 5 or less, wherein the embossed surface has Sk, Spk, and Svk values, and when a total sum of the Sk value, the Spk value, and the Svk value is 100%, a sum of the Sk value and the Spk value is 50% or more, wherein the embossed surface has a Sz value of 30 to 90 μm, and wherein the film includes a polyvinyl acetal resin and a plasticizer.

The present invention aims to provide an interlayer film for a laminated glass having recesses in the shape of engraved lines on both surfaces to exhibit excellent deaeration properties in production of a laminated glass and suppressing formation of a moire pattern when unwound from a rolled body thereof. The present invention also aims to provide a laminated glass including the interlayer film for a laminated glass, a method for producing an embossing roll suitably used for production of the interlayer film for a laminated glass, and a method for producing the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses on both surfaces, the recesses each having a groove shape with a continuous bottom and being regularly adjacent and parallel to each other, the interlayer film having a glossiness on a surface with the large number of recesses measured in conformity with JIS Z 8741-1997 of higher than 3% or a haze value measured in conformity with JIS K 7105-1981 of 87% or lower.

The present invention aims to provide an interlayer film for a colored laminated glass which exhibits a visible light transmittance Tv of 5% or lower, small variation in visible light transmittance and an excellent appearance when incorporated in a laminated glass together with two clear glass plates in conformity with JIS R3202 (1996), and a colored laminated glass produced using the interlayer film for a colored laminated glass. Provided is an interlayer film for a colored laminated glass exhibiting a visible light transmittance Tv of 5% or lower when incorporated in a laminated glass together with two clear glass plates in conformity with JIS R3202 (1996), the interlayer film for a colored laminated glass including a laminate of at least two layers including a first resin layer containing a thermoplastic resin and a colorant and a second resin layer containing a thermoplastic resin and no colorant, the first resin layer satisfying a ratio of a difference Δt.sub.1 in thickness between the maximum value t.sub.1max and the minimum value t.sub.1min to an average thickness (Δt.sub.1/average thickness of first resin layer) of 0.30 or less.

Laminated glass includes a pair of glass plates each having a curvature; an intermediate film located between the pair of glass plates; and a light control element enclosed in the intermediate film. The light control element includes a first resin layer; a second resin layer; and a light control layer held by the first resin layer and the second resin layer. One or more slits are provided in a main surface of the first resin layer.

A laminated glass includes first and second glass plates arranged on vehicle interior and exterior sides, respectively; and an intermediate film located between the glass plates, and configured to be bonded to the glass plates. The laminated glass has a display area used for a head-up display. The display area includes an area having a cross section with a wedge shape. A thickness of an upper edge side portion of the display area is greater than that of a lower edge side. In at least a part of the area having a cross section with a wedge shape, a value of the wedge angle varies depending on a position of measurement in the vertical direction. A viewing angle of the display area is 2 degrees or more. A maximum amount of deviation in measured values of the wedge angles from a linear approximation line is 0.2 mrad or less.

Provided is a laminated glass capable of preventing breakage in an end part of the laminated glass under external impact. A laminated glass according to the present invention is a laminated glass including a first glass plate, a second glass plate, and an interlayer film, the interlayer film being arranged between the first glass plate and the second glass plate, the laminated glass having a portion where a lateral surface of the interlayer film is exposed, and a ratio of a weight of broken glass pieces determined by a ball drop test in a laminated glass after a dipping-light irradiation test, to a weight of broken glass pieces determined by the ball drop test in a laminated glass not having undergone the dipping-light irradiation test being 2.5 or less.