Linear light source, image sensor and image scanning device

An image sensor and line light source technology, applied in the field of photoelectric scanning, can solve the problems of excessive divergence angle of line light source and low light source utilization efficiency

Active Publication Date: 2016-03-02
WEIHAI HUALING OPTO ELECTRONICS CO LTD
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a line light source, an image sensor and an image scanning device to solve the problem of low utilization efficiency of the light source caused by the excessive divergence angle of the line light source in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Linear light source, image sensor and image scanning device
  • Linear light source, image sensor and image scanning device
  • Linear light source, image sensor and image scanning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0045] figure 1 , image 3 , Figure 5 , Figure 7 and Figure 9 The paths with arrows in are the irradiation paths of light.

[0046] Such as Figure 1 to Figure 3 , Figure 5 , Figure 7 and Figure 9 As shown, the present invention provides a line light source. Such as Figure 1 to Figure 3 As shown, it shows a schematic structural view of the first embodiment of the line light source of the present invention. The line light source includes an LED point light source 10, an LED-PCB board 11, an LED connection end shell 12, a light guide body 20 and a reflective pattern 30. The light guide body 20 has a first side 21 and a second side 22 which are arranged oppositely. The bottom side...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a linear light source, an image sensor and an image scanning device. The linear light source comprises an LED spot light source installed on an LED-PCB; an optical conductor connected to an LED coupling end casing, wherein the LED spot light source and the optical conductor are oppositely arranged through the LED coupling end casing, the optical conductor is provided with a first side and a second side which are oppositely arranged, a bottom side and a light emitting side which are arranged oppositely, and reflecting sides arranged between the bottom side and the light emitting side, and the light from the LED spot light source is emitted to the second side from the first side; and a reflective graph arranged on the bottom side, wherein partial or all outline type lines of the reflecting sides are parabolas, and the bottom side passes through the focal points of the parabolas. The linear light source utilizes the principle that the light passing through the focal point of a parabola is bound to be reflected parallelly after reflection of the parabola to solve the problem of low light source utilization efficiency caused by oversized radiation angles of a liner light source in the prior art.

Description

technical field [0001] The invention relates to the field of photoelectric scanning, in particular to a line light source, an image sensor and an image scanning device. Background technique [0002] An image sensor, especially a contact image sensor, has a line light source in the form of a light guide. The light emitted by the LED illuminant of the line light source enters the light guide body from the end surface of the light guide body, and is emitted from the emission part on the side surface of the light guide body, and the light emitted from the light guide body becomes along the main scanning direction of the original document surface. Extended linear light. The contact image sensor is mainly used in fax machines at first, and its scanning method is a contact scanning method, which is characterized by using a rubber roller to press the original, so that the original passes close to the bearing surface of the image sensor, and the linear light is irradiated on the sur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/031
CPCH04N1/031H04N1/0315
Inventor 刘振翔
Owner WEIHAI HUALING OPTO ELECTRONICS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap