Abstract: A monocular telescope and an adjustable optical mechanism thereof are provided. The monocular telescope includes a housing module, a monocular module, and a camera. The housing module includes an outer tube assembled to the camera and a manipulation assembly that is assembled to the outer tube. The monocular module is movably assembled to the outer tube and includes an inner tube, a gear rack fixed to the inner tube and engaged with the manipulation assembly, and a plurality of optical lenses that are spacedly fixed in the inner tube and that jointly define a central optical axis. The manipulation assembly is configured to drive the gear rack to move the monocular module relative to the housing module along a direction parallel to the central optical axis back and forth, so that the camera can be allowed to focus a predetermined object.

Abstract: A monocular telescope and an adjustable optical mechanism thereof are provided. The monocular telescope includes a housing module, a monocular module, and a camera. The housing module includes an outer tube assembled to the camera and a manipulation assembly that is assembled to the outer tube. The monocular module is movably assembled to the outer tube and includes an inner tube, a gear rack fixed to the inner tube and engaged with the manipulation assembly, and a plurality of optical lenses that are spacedly fixed in the inner tube and that jointly define a central optical axis. The manipulation assembly is configured to drive the gear rack to move the monocular module relative to the housing module along a direction parallel to the central optical axis back and forth, so that the camera can be allowed to focus a predetermined object.

Abstract: A telescope includes a monocular assembly, an optical lens assembly, and a transparent focus sheet. The monocular assembly includes a monocular and a light-shielding tube movably sleeving around the monocular. The optical lens assembly is disposed in the light-shielding tube and is fixed on the monocular. The focus sheet corresponds in position to an end portion of the light-shielding tube. The focus sheet has a first surface and a second surface opposite to and parallel to the first surface. The focus sheet includes a plurality of straight-shaped focus thru-holes, and the focus thru-holes include at least one first thru-hole, at least one second thru-hole and at least one third thru-hole. A longitudinal direction of the first thru-hole and that of the second thru-hole jointly define an angle less than 90 degrees, and a longitudinal direction of the third thru-hole is parallel to an angle bisector of the angle.