Polarizer and electronic device comprising the same

The invention discloses a polarizer comprising a first protective layer, a second protective layer, and a polarizing layer sandwiched therebetween. The polarizing layer comprises a first polarizing area and a second polarizing area with different polarization. The degree of polarization of the first polarizing area is greater than 99.9% and less than 100%, and the light transmittance is between 40% and 45%; the polarization degree of the second polarizing area is not less than 90% and not greater than 99.9%, and the light transmittance is between 45% to 48%. The disclosed polarizer can be used in an electronic device with an integrated camera module.