Lens assembly for a videoconferencing system

An imaging device, comprising:

• a lens assembly, from front to rear comprising:
• a first lens group of positive refractive power;
• a second lens group of negative refractive power;
• a third lens group of positive refractive power;
• a fourth lens group of positive refractive power;
• and
• a fifth lens group of positive refractive power,
• wherein a focal length of the first lens group is greater than a focal length of the fifth lens group, which is greater than a focal length of the third lens group, which is greater than a focal length of the fourth lens group, which is greater than a focal length of the second lens group.

A videoconferencing system, comprising:

• a cylindrical lens housing defining a front opening and having a longitudinal axis;
• a lens assembly disposed within the cylindrical lens housing along the longitudinal axis and comprising:
• a first lens group having a focal length of 112 mm,
• a second lens group having a focal length of −10 mm,
• a third lens group having a focal length of 93 mm,
• a fourth lens group having a focal length of 16 mm, and
• a fifth lens group having a focal length of 102 mm
• wherein the lens groups are aligned with and distributed along the longitudinal axis, the first lens group being adjacent to the front opening and the fifth lens group being disposed within an opening defined by an interior-facing surface of a rear wall of the cylindrical housing.