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Optical scanner

An optical scanning and to-be-scanning technology, applied in optics, optical components, instruments, etc., can solve the problems of low power consumption, inconvenience for users, and time-consuming

Inactive Publication Date: 2007-08-15
LITE ON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Generally, the light sources used in traditional scanners are mainly cold cathode tubes (Cold Cathode Fluorescent Lamp; CCFL). Although cold cathode tubes have the advantages of high brightness, low power consumption, and long service life, their main The disadvantage is that every time the user restarts the scanner, it takes a warm-up time to allow the brightness of the lamp to gradually increase to a stable state before the image scanning can start. Therefore, in the step 11 It takes some time to wait for the end of the lamp warm-up
[0010] At normal temperature, the warm-up time is about 1-3 minutes. However, for some cold countries, users have to wait for a longer period of time before starting to use the scanner, which causes considerable inconvenience to users. , and some users even mistakenly think that the long waiting time is the reason for the system crash, and request to return the product

Method used

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Embodiment Construction

[0030] In order to have further understanding to the purpose of the present invention, structural feature and function thereof, now in conjunction with accompanying drawing, describe in detail as follows:

[0031] Please refer to FIG. 2 , which is a schematic view of the first embodiment of the optical scanning device of the present invention, which mainly includes a glass platform 10 , an optical-mechanical module 20 , a first reference whiteboard 30 and a second reference whiteboard 40 .

[0032] The glass platform 10 is used for carrying objects to be scanned. The optomechanical module 20 can move relative to the glass platform 10 , and its main components include: a light source (such as a cold cathode tube), a lens, an image sensor, and an analog / digital converter.

[0033] The light emitted by the light source hits the object to be scanned on the glass platform 10. Taking a black and white picture as an example, when the light emitted by the light source hits a black poi...

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Abstract

The present invention relates to an optical scanning device. It is characterized by that its two sides which are correspondent to the glass flat plate for bearing thing to be scanned and are vertical are respectively equipped with a first reference white plate and a second reference white plate. When said optical scanning device is started, said invention utilizes the data materials of image quality test and Y-direction brightness changed quantity obtained by utilizing optical machine module to scan the first reference white plate and second reference white plate, and utilizes the compensation correction of software to obtain normal digital image data so as to attain the goal of quickly prebrowsing and scanning.

Description

technical field [0001] The invention relates to an optical scanning device, in particular to an optical scanning device capable of quickly starting preview and scanning. Background technique [0002] A scanner is a device for capturing images. Taking a traditional flatbed scanner as an example, its basic equipment includes: a glass platform (Window) for carrying objects to be scanned (which can be documents or pictures) , and an optomechanical module to convert the image into an electrical signal; the core of the optomechanical module is an image sensor (Image sensor), and the image of the object is correctly focused and imaged on the image sensor Lens, an image sensing element (such as a CCD, that is, a charge-coupled device) has many image sensing pixels. As each image sensing pixel receives a different light intensity, it accumulates charges to form a pressure difference, and then passes through the analog / digital The converter (A / D Converter) converts it into a digital ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/04G06K9/20G02B26/10
Inventor 李达义谢东富高小丽
Owner LITE ON TECH CORP