The electronic device enclosures include a glass ceramic region in the vicinity of an optical sensor or optical component, which may be specially adapted to enhance sensor performance and/or a visual appearance of the device.
In Apple’s patent background they note that many modern day portable electronic devices include cameras and various optical sensors that are integrated into the device. Typically, cameras or other optical sensors are positioned below a sheet of cover glass or plastic component of the enclosure. This current patent application is directed to electronic device enclosures that include glass ceramic materials and may have advantages as compared to some traditional electronic device enclosures.
Apple’s invention includes a cover member and the glass ceramic region may be formed in the cover member. The glass ceramic region may have different optical or other properties as compared to another region of the cover member.
The optical component may be configured to emit or detect light in a specified wavelength range. In some cases, the glass ceramic region may be configured to have a lower transmittance for light in the specified wavelength range than another region of the cover member.
For example, the other region of the cover member may be a glass region or a glass ceramic region comprising a different glass ceramic material. The glass ceramic region may also have an optical property or optical characteristic which differs from that of the other region. For example, the glass ceramic region may have a transmittance or a refractive index different from that of the other region.