Monocular telescope and adjustable optical mechanism thereof

An adjustable optical mechanism of a monocular telescope, comprising:

• a housing module including:
• an outer tube having an observation end and an assembling end that is opposite to the observation end;
• and
• a manipulation assembly assembled to the outer tube and disposed between the observation end and the assembling end, wherein the outer tube is configured to allow a camera to be fixed to the assembling end thereof;
• and
• a monocular module movably assembled in the outer tube and including:
• an inner tube;
• a gear rack fixed to the inner tube and engaged with the manipulation assembly;
• and
• a plurality of optical lenses fixed in the inner tube and spaced apart from each other, wherein the optical lenses jointly define a central optical axis;
• wherein the manipulation assembly is configured to drive the gear rack to move the monocular module back and forth relative to the housing module along a direction parallel to the central optical axis;
• wherein the inner tube includes:
• a first sub-tube having a first inner diameter, wherein the gear rack is fixed to an outer surface of the first sub-tube;
• and
• a second sub-tube connected to the first sub-tube and having a second inner diameter that is different from the first inner diameter;
• wherein the second sub-tube is closer to the assembling end than the first sub-tube, and the optical lenses are respectively fixed in the first sub-tube and the second sub-tube.

A monocular telescope, comprising:

• a housing module including:
• an outer tube having an observation end and an assembling end that is opposite to the observation end;
• and
• a manipulation assembly assembled to the outer tube and disposed between the observation end and the assembling end;
• a monocular module movably assembled in the outer tube and including:
• an inner tube having a first end and a second end that is opposite to the first end;
• a gear rack fixed to the inner tube and engaged with the manipulation assembly;
• and
• a plurality of optical lenses fixed in the inner tube and spaced apart from each other, wherein the optical lenses jointly define a central optical axis;
• and
• a camera fixed to the assembling end of the outer tube and disposed adjacent to the second end of the inner tube, wherein a relative positioning of the camera and the outer tube is fixed;
• wherein the manipulation assembly is configured to drive the gear rack to move the monocular module back and forth relative to the housing module along a direction parallel to the central optical axis, so as to allow the camera to focus a predetermined object;
• wherein a central line of the outer tube overlaps with the central optical axis, the camera is located at the central line, and a weight of the camera is 20% to 45% of a sum of a weight of the housing module and a weight of the monocular module.