Deep water enclosures for lighting and imaging

A submersible optical enclosure for use in high pressure environments, comprising:

• a titanium housing having a hollow interior sized to accommodate an electronic device comprising one or more of an electronic light and an imaging device;
• a transparent pressure bearing substantially dome shaped window mechanically coupled to the housing, having an angular measurement of between approximately 164 degrees and 178 degrees and sized correspondingly to the electronic device to allow light into or out of the housing interior for lighting or imaging;
• a dome support ring comprising a material having a higher Young's modulus than the transparent pressure bearing substantially dome shaped window positioned between the housing and the transparent pressure bearing substantially dome shaped window;
• a compliance material layer positioned between the annular dome support ring and the transparent pressure bearing window;
• a coupling element that secures the housing, dome support ring, and port window together;
• and
• one or more water-tight seals to block water entry into the housing interior.