POLARIZATION ELEMENT AND POLARIZATION PLATE

摘要

[Problem] To provide a polarization plate that is suitable for use in a fluorescence excitation color conversion display that uses a blue LED or a blue fluorescent tube with a maximum luminescent output of 440nm-470nm as the light source, and that is characterized by having high contrast, low light leakage, and high transmittance when transmitting light. [Solution] Provided are a polarization element and polarization plate characterized by having the following: a TP of =30% in the 440nm=?=470nm wavelength region, CR of =8,000 in a random continuous 20nm range wavelength region and CR of =5,000 in the remaining wavelength regions, and at least a dichromatic color element.