Patent ID: 11913754
Assignee: nan
Field: Optics (Instruments)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A telescopic sight for detachably connecting a night vision device, comprising:
a first external barrel comprising at least one opening passing through a side wall of the first external barrel, and an end of the first external barrel configured for detachably connecting the night vision device;
a regulation element disposed on the first external barrel;
a first lens module located at an inner side of the first external barrel; and
a transmission module comprising a transmission element and at least one connection element, the transmission element connected between the regulation element and the at least one connection element, and the at least one connection element passing through the at least one opening and connected between the transmission element and the first lens module,
wherein when the regulation element is driven by an external force, the regulation element drives the transmission module move along an optical axis of the telescopic sight, such that the at least one connection element slides along the opening and the first lens module moves along the optical axis to regulate focal length of the telescopic sight;
wherein the regulation element comprises a regulation ring sleeved on the first external barrel, the regulation ring comprises a first inner screw thread, and the transmission element comprises a transmission ring with a first external screw thread coordinated with the first inner screw thread, when the regulation ring rotates around the optical axis O-O, due to the first external screw thread and the first inner screw, the at least one connection element and the first lens module are driven by the transmission element along the optical axis O-O;
wherein the telescopic sight further comprises a second external barrel, the second external barrel is connected the other end away from the night vision device and configured for connecting a second lens module, the first lens module is an eyepiece module, and the second lens module is an objective module;
wherein the first external barrel comprises a first part, a second part and a third part, the first part is configured for detachably connecting the night vision device, the second part is connected between the first part and the third part, the at least one opening is located at the second part, an end of the second external barrel is sandwiched between the third part and regulation ring, the other end of the second external barrel is configured for connecting the second lens module;
wherein an external surface of the second part comprises a main surface connected to an external surface of the third part, a first connection surface connected to the main surface away from the third part, a first supporting surface connected to the first connection surface away from the main surface, and a second connection surface connected between an external surface of the first part and the first supporting surface, the first connection surface and the main surface form a first restriction groove, the opening passes through the main surface and an inner surface of the second part, the transmission element is located at the first restriction groove, the first supporting surface and the second connection surface forms a second restriction groove, an external surface of the end of the second external barrel comprises a second supporting surface and a third connection surface connected to the second supporting surface, the regulation element is located at the second restriction groove, two ends of the regulation element abut the second connection surface and the third connection surface such that the regulation element is restricted between the second connection surface and the third connection surface.