Patent ID: 11820106

Abstract:
Provided is an interlayer film for laminated glass with which double images in laminated glass can be significantly suppressed. The interlayer film for laminated glass according to the present invention is an interlayer film for use in a laminated glass that is a head-up display, the interlayer film has one end, and the other end being at the opposite side of the one end, the other end has a thickness larger than a thickness of the one end, the interlayer film has a region for display corresponding to a display region of the head-up display, and when three regions obtained by equally dividing the region for display into three in a direction connecting the one end and the other end are named a first partial region for display, a second partial region for display, and a third partial region for display in sequence from the one end side, as to partial wedge angle Ax, Bx, and Cx in the first, second, and third partial regions for display, and partial wedge angle φx in the region for display satisfy, |Ax−φx| is 0.05 mrad or less, |Bx−φx| is 0.05 mrad or less, and |Cx−φx| is 0.05 mrad or less.