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Light source projection device and light source arrangement method of scanning module

A scanning module and light source projection technology, which are applied in the field of light source projection devices and light source arrangement methods

Inactive Publication Date: 2011-12-07
TECO IMAGE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, this method cannot improve the signal / noise ratio. After the brightness at both ends is compensated and amplified by the firmware (F / W), the noise will also be amplified. The problem of image distortion is generated. It can be seen from this that how to improve the light source projection structure of the scanning module so that the photosensitive component receives light evenly is a subject that the inventors of the present invention and those in the technical field engaged in this related industry want to improve urgently.

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  • Light source projection device and light source arrangement method of scanning module
  • Light source projection device and light source arrangement method of scanning module
  • Light source projection device and light source arrangement method of scanning module

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Embodiment Construction

[0042] Please refer to image 3 , Figure 4 , Figure 5 , Figure 6A and Figure 6B , which is a light source projection device for a scanning module disclosed in the present invention, image 3 is a three-dimensional schematic diagram of a light source projection device, Figure 4 is a schematic plan view of the light source projection device, Figure 5 It is a schematic diagram of the structure applied to the scanning module, Figure 6A It is the luminance curve of the general light source (such as CCFL lamp) light source projection device, Figure 6B It is the luminance curve diagram of the LED light source (this embodiment) projection device.

[0043] The light source projection device 60 of the scanning module includes: a substrate 61 and a plurality of light emitting diodes 62 .

[0044] The substrate 61 is generally in the shape of a strip, and includes a first end 61a, a second end 61b, and an intermediate section 61c. The first end 61a and the second end 61b a...

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Abstract

A light source projection device for a scanning module and a light source arrangement method thereof, the light source projection device includes: a substrate, which includes a first end, a second end and a middle section, the first end and the second end are respectively located on both sides of the middle section; and A plurality of light-emitting diodes are located on the substrate, and an arrangement distance is formed between two adjacent light-emitting diodes, and the arrangement distance decreases from the middle section toward the first end and the second end respectively.

Description

technical field [0001] The invention relates to a light source projection device and a light source arrangement method thereof, in particular to a light source projection device of a scanning module and a light source arrangement method thereof. Background technique [0002] With the advancement of technology, optical scanners have become increasingly popular computer peripheral devices. Optical scanners capture images mainly by using a light-emitting device to irradiate light onto the document to be scanned. After the light is reflected by the document to be scanned, the light is guided to the photosensitive component by the lens group, and the photosensitive component can detect different areas on the document. Reflect light of different intensities, and convert the reflected light waves into digital data, and then use scanning software to read in the data and reassemble it into computer image files. [0003] see figure 1 and figure 2 As shown, the ideal light-emitting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V19/00G06K7/10F21Y101/02F21Y103/10F21Y115/10
Inventor 陈三塘
Owner TECO IMAGE SYST