Abstract: Provided is a spectacle lens including multilayer films on an object-side surface and an eyeball-side surface of a lens substrate, in which a reduction ratio of light in a wavelength band of 800 to 1400 nm in the spectacle lens is 45.0% or more, a ratio of a mean reflectance on the eyeball-side surface of the spectacle lens to a mean reflectance on the object-side surface of the spectacle lens is 0.2 to 0.8 in the wavelength band, and a mean reflectance on the eyeball-side surface in a wavelength band of 315 to 400 nm is 5.0% or less.

Abstract: Provided is a magnetic reproducing method that enables a thin-film magnetic head including a head element for reading data signals which has a noise in its output due to a low temperature to bring out an excellent read characteristic in which the noise is suppressed even under the use environment with the low temperature. The magnetic reproducing method comprises the steps of: heating a head element for reading data signals which has a noise in its output due to a low temperature; and performing a read operation by using the head element for reading data signals under condition that the head element is increased in temperature.

Abstract: Provided is a magnetic reproducing method that enables a thin-film magnetic head including a head element for reading data signals which has a noise in its output due to a low temperature to bring out an excellent read characteristic in which the noise is suppressed even under the use environment with the low temperature. The magnetic reproducing method comprises the steps of: heating a head element for reading data signals which has a noise in its output due to a low temperature; and performing a read operation by using the head element for reading data signals under condition that the head element is increased in temperature.