Optical reading head of scanning apparatus
OwnerYu-Cheng Changinventor
Life of this patent
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Abstract
An optical reading head of a scanning apparatus includes a casing, a lens, a base and a sliding frame. The base is used to support an image sensing module and movable on the casing. The sliding frame is coupled with the base for fixing and driving the lens to move along a gliding track on the casing. During the focusing operation, the lens' position is adjustable by moving the sliding frame and the optical signals are clearly imaged onto the image sensor of the imaging sensing module. During the magnification correcting operation, positions of the lens and the imaging sensing module are adjustable by moving the base and the tolerance of magnification for the optical reading head would be equal to or less than an acceptable preset value.
Claims36
An optical reading head of a scanning apparatus, comprising:
- a casing having a gliding track on a surface thereof;
- an image sensing module including an image sensor;
- a base arranged on said surface of said casing, and comprising a rear part and first and second lateral parts, wherein said image sensing module is supported by said rear part;
- a lens movable on said gliding track;
- and
- a sliding frame disposed between said first and second lateral parts for driving said lens to move along said gliding track in response to an external force.
An optical reading head of a scanning apparatus, comprising:
- a casing containing therein a light source, a plurality of reflective mirrors, and a lens;
- an image sensing module including an image sensor;
- a base arranged on a surface of said casing for supporting said image sensing module, the base including a receptacle therein;
- a push rod accommodated within said receptacle and coupled to said image sensing module for adjusting the horizontal alignment angle of said image sensing module;
- wherein said push rod further comprises a linear recess structure on the top surface thereof, and said base has a downward perforation corresponding to said linear recess structure, wherein a portion of said linear recess structure is exposed from said downward perforation after said push rod is accommodated within said receptacle.
An optical reading head of a scanning apparatus comprising:
- a casing;
- an image sensing module including an image sensor;
- a base arranged on a surface of the casing, wherein the image sensing module is supported by the base;
- a lens movably disposed on the surface of the casing;
- and
- a sliding frame slidably mounted to the base, the lens being captured between the sliding frame and casing, the sliding frame engaging the lens to move the lens relative to the base and casing in response to an external force, the sliding frame selectively fixable relative to the base.
A method for adjusting a reading head comprising:
- in an apparatus comprising a casing having a gliding track on a surface thereof, an image sensing module including an image sensor, a base arranged on the surface of the casing, and comprising a rear part and first and second lateral parts, wherein the image sensing module is supported by the rear part, a lens movable on the gliding track, and a sliding frame disposed between the first and second lateral parts for driving the lens to move along the gliding track in response to an external force, moving the lens relative to the image sensor by actuating the base, and
- fixing the base relative to the casing.
Dependencies are inferred from the claim text.