Fixing device for accurate positioning of optical assembly, optical module, and electronic device

An optical module of an electronic device, comprising:

• an optical assembly;
• and
• a fixing device for fixing the optical assembly to a rear housing of the electronic device, the fixing device comprising a cover plate connected with the optical assembly, the cover plate defining a hole and a limiting portion, wherein the hole corresponds to a portion of the optical assembly which is configured to protrude out of the cover plate, the limiting portion is configured to limit a movement of the optical assembly away from the rear housing;
• wherein the fixing device further comprises a bracket disposed on the rear housing and connected with the cover plate to form a receiving space for receiving the optical assembly and an elastic sheet disposed outside the receiving space and protruding from a surface of the bracket, the elastic sheet is configured to resist against a bottom surface of a circuit board of the electronic device.

An electronic device comprising:

• a rear housing;
• a display module;
• and
• an optical module connected with the display module, the optical module comprising:
• an optical assembly;
• and
• a fixing device for fixing the optical assembly to the rear housing, wherein the fixing device fixes the optical assembly in a predetermined position of the rear housing, the fixing device comprises a cover plate connected with the optical assembly, the cover plate defines a hole and a limiting portion, the hole corresponds to a portion of the optical assembly which is configured to protrude out of the cover plate, the limiting portion is configured to limit a movement of the optical assembly away from the rear housing;
• wherein the electronic device further comprises a circuit board disposed on the rear housing and electrically connected with the optical assembly;
• wherein the fixing device further comprises a bracket disposed on the rear housing and connected with the cover plate to form a receiving space for receiving the optical assembly and an elastic sheet disposed outside the receiving space and protruding from a surface of the bracket, the elastic sheet resists against a bottom surface of the circuit board.