Apple Inc.
ANODIZED PART HAVING LOW REFLECTANCE OF VISIBLE AND NEAR-INFRARED LIGHT

Abstract:

This application relates to an enclosure for a portable electronic device. The enclosure includes a metal substrate, and an anodized layer overlaying the metal substrate and including pores having a near-infrared (NIR) light-absorbing material therein, where an average specular reflectance of NIR light that is incident upon an external surface of the anodized layer is less than 3%.