Polarizer, polarizing light source device and liquid crystal display

   
   

A polarizer is provided which comprises a reflection type polarizer and a dichroic polarizer, each of which is placed so that polarizing transmission axes of the reflection type polarizer and the dichroic polarizer are coincident with each other on the same optical path, wherein the dichroic polarizer has a transmittance [T(AP)(.lambda.)] of about 44% or more and a polarizing coefficient [P(AP)(.lambda.)] of about 50.0% or more or wherein the dichroic polarizer has a luminous correction transmittance [Y(AP)] of about 44% or more and a luminous correction polarizing coefficient [P(AP, y)] of about 50.0% or more.

On fournit un polariseur qui comporte un type le polariseur et un polariseur dichroïque de réflexion, dont chacun est placé de sorte que les haches de polarisation de transmission de la réflexion dactylographient le polariseur et le polariseur dichroïque soient coïncident avec l'un l'autre sur le même chemin optique, où le polariseur dichroïque a une transmittance [ T(AP)(.lambda.) ] environ de 44% ou plus et un coefficient de polarisation [ P(AP)(.lambda.) ] environ de 50.0% ou plus ou où le polariseur dichroïque a une transmittance lumineuse de correction [ Y(AP) ] environ de 44% ou plus et un coefficient de polarisation de correction lumineuse [ P(AP, y) ] environ de 50.0% ou de plus.

 
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