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Contact image sensing module

A sensor module and contact technology, applied in image communication, electrical components, etc., can solve the problems of low space utilization rate and uncompact image sensor structure, etc., and achieve compact structure, reduced space occupation, and uniform illumination Effect

Inactive Publication Date: 2011-06-15
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to make the light emitted by the light emitting diode light source pass through the glass plate and spread evenly on the object to be scanned, a certain distance needs to be separated between the light emitting diode light source and the glass plate to spread the light, which results in the structure of the image sensor being not compact. Space utilization is not high

Method used

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Embodiment Construction

[0014] Such as Figure 1 to Figure 4 Shown is a preferred embodiment of the contact image sensor module 100 of the present invention. The contact image sensor module 100 includes a circuit board 10 , a contact image sensor element 20 , a bearing seat 30 , a lens group 40 , a glass plate 50 and an LED light source 60 . These components of the contact image sensor module 100 can be disposed together in a scanner or a fax machine housing (not shown).

[0015] The circuit board 10 is elongated and placed horizontally, and the contact image sensing element 20 is disposed on the circuit board 10 . The contact image sensing device 20 includes a plurality of contact image sensors 21 arranged in three rows along the lengthwise direction of the circuit board 10 .

[0016] The carrying seat 30 is located above the circuit board 10 , and the carrying seat 30 is elongated and has a rectangular cross section. The bearing base 30 is provided with a plurality of through holes 31 extending ...

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Abstract

The invention discloses a contact image sensing module, which comprises a contact image sensing element, a lens group, a glass plate and a light-emitting diode (LED) light source. The glass plate has a wedge-shaped cross section and comprises an incident plane, a first emergent plane and a second emergent plane; the LED light source is arranged on one side of the incident plane of the glass plate; the lens group is positioned between the second emergent plane of the glass plate and the contact image sensing element; light rays emitted from the LED light source enter the glass plate from the incident plane of the glass plate; one part of light rays entering the glass plate from the incident plane are directly emitted from the first emergent plane of the glass plate so as to irradiate an object to be scanned; and the other part of light rays entering the glass plate from the incident plane are reflected through the second emergent plane and are emitted from the first emergent plane so as to irradiate the object to be scanned. The contact image sensing module is compact in structure and smaller in occupied space, and can uniformly irradiate the object to be scanned in a wide range.

Description

technical field [0001] The invention relates to the field of scanning devices, in particular to a contact image sensing module. Background technique [0002] In scanners, commonly used image sensing elements are classified into two types: contact image sensor (Contact Image Sensor, CIS) and charge-coupled device (Charge-coupled Device, CCD). Compared with charge-coupled devices, contact image sensors have been widely used in household low-cost scanners and fax machines due to their advantages of low price and easy fabrication. [0003] In a scanner, a contact image sensor module is usually composed of a light emitting diode (LED) light source, a glass plate, a lens group and a contact image sensor element. The glass plate has a rectangular cross-section. The object to be scanned and the LED light source are respectively located on the upper and lower sides of the glass plate. The light passes through the glass plate to the lens element, through which the reflected light is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/028H04N1/04
Inventor 林奕村
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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