Scanning module capable of fine adjusting optical path

Abstract

The present invention provides a scanning module capable of trimming optical path. It includes a lamp tube, a base seat, a light-sensitive baseplate and a regulation unit, in which said lamp tube is used for providing light source required for scanning file, and said base seat is equipped with a reflector group for receiving the light transferred from scanning file and a lens for providing focusing treatment, said light-sensitive baseplate can be used for converting the light outputting by lens into electronic signal, and said regulation unit can be used for regulating optical path distance between base seat and light-sensitive baseplate so as to regulate total optical path length and can correct the amplification error, and obtain a good output image quality.

Description

technical field [0001] The invention relates to a scanning module capable of finely adjusting the optical path, in particular to a scanning module that adjusts the front and rear positions of the photosensitive assembly to adjust the total optical path length or adjust the distance between the lens and the photosensitive substrate to align the focus. Background technique [0002] Generally, when scanning with a scanning module (such as a scanner of a computer peripheral device or a multifunctional business machine used in an office or home), the initial magnification is controlled by the lens design inside the scanning module. In other words, when a scanned document is placed on the scanning module for scanning, a light source irradiates the scanned document, and the mirror group located in the scanning module receives the light transmitted from the scanned document, and finally reflects the light to the lens And focus on a photosensitive component to convert the analog opti...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned lens magnification will inevitably have some errors in production; moreover, the reflector group installed in the scanning module will also cause errors due to its placement, making the total light between the scanned document and the photosensitive component Due to the above-mentioned reasons, the range distance changes, or there is a difference between the left and right ends, so that the document scanning quality cannot be effectively controlled, thus affecting the final output image quality

[0004] As can be seen from the above, the above-mentioned known scanning module obviously has inconvenience and shortcomings in actual use, and needs to be improved.

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