Hermetic housing comprising a getter, optoelectronic component or mems device incorporating such a hermetic housing and associated production method

A hermetic housing for an optoelectronic component or a MEMS device configured to form an enclosure within which a low pressure or vacuum prevails, said hermetic housing comprising:

• an optical window transparent for at least one wavelength of interest of said optoelectronic component or of the MEMS device;
• and
• a layer of a getter material configured to capture gases present in said enclosure and deposited on said optical window opposite said enclosure;
• wherein the layer of getter material has a thickness (et) greater than 60 nanometers and a porosity (P) in the range from 10% to 70%;
• the thickness (et) and the porosity (P) being configured to satisfy the following relation:
• (
• 1
• -
• P
• )
• *
• e
• t
• <
• λ
• 2
• ⁢
• ⁢
• π
• ⁢
• ⁢
• k
• with λ corresponding to said at least one wavelength of interest of the optical window, and k corresponding to the extinction coefficient of the material of the layer of getter material for said at least one wavelength of interest of the optical window.