Non-line-of-sight deposition of coating on internal components of assembled device

An article comprising an assembled device comprising an optical encoder, wherein the optical encoder comprises one or more internal components enclosed within an interior of the optical encoder and an optical window in a wall of the optical encoder, wherein the one or more internal components capture a position of an object external to the assembled device in accordance with a type associated with the optical encoder, and a coating deposited onto a surface of the internal components enclosed within the optical encoder, wherein the coating is a conformal, optically transparent coating, the article having been manufactured by a process comprising:

• loading the assembled device into a deposition chamber;
• and
• depositing the coating onto the surface of the internal components using a non-line-of-sight deposition process without altering a structure of the assembled device or impacting functionality of the assembled device, wherein the coating penetrates an exterior of the assembled device through one or more openings of the assembled device that expose the interior of the assembled device to an external environment.