Lens group housing, a corresponding external housing system and a camera mounting module group

An external housing system configured to receive an lens group housing, comprising:

• at least one limiting matching structure corresponding to at least one limiting structure of the lens group housing, so as to limit the position of the lens group housing relative to the external housing system;
• wherein the at least one limiting matching structure comprises a front end abutment face configured to cooperate with the at least one limiting structure of the lens group housing so as to restrict the lens group housing in a first direction from moving in an axial direction of a lens group relative to the external housing system;
• and
• a nut structure, the nut structure being configured to match a thread structure of the lens group housing such that the lens group housing is fixedly connected relative to the external housing system.

An external housing system configured to receive an lens group housing, comprising:

• at least one limiting matching structure corresponding to at least one limiting structure of the lens group housing, so as to limit the position of the lens group housing relative to the external housing system;
• and
• wherein the at least one limiting matching structure comprises an anti-rotation matching portion configured to cooperate with the at least one limiting structure of the lens group housing, so as to restrict the lens group housing from rotating about an axis of a lens group relative to the external housing system;
• wherein the at least one limiting structure of the lens group housing also comprises a front end limiting face and an anti-rotation portion, and the at least one limiting matching structure of the external housing system comprises a front end abutment face and the anti-rotation matching portion;
• wherein the anti-rotation portion is a recessed portion on the front end limiting face, and the anti-rotation matching portion is a raised portion on the front end abutment face;
• and
• a nut structure, the nut structure being configured to match a thread structure of the lens group housing such that the lens group housing is fixedly connected relative to the external housing system.