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Illuminating device, image reading apparatus including the illuminating device, and image forming apparatus including the image reading apparatus

US8964264B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8964264-B2
Application numberUS-201414269992-A
CountryUS
Kind codeB2
Filing dateMay 5, 2014
Priority dateOct 30, 2009
Publication dateFeb 24, 2015
Grant dateFeb 24, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. An LED array ( 71 ) and a reflective plate ( 73 ) are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member ( 72 ) is disposed on the side of the LED array ( 71 ). The light-guiding member ( 72 ) includes a direct emission unit ( 77 ) disposed between an illumination range y centered on a document reading position and the LED array ( 71 ) and an indirect emission unit ( 78 ) disposed between the reflective plate ( 73 ) and the LED array ( 71 ), a light incidence face of the direct emission unit ( 77 ) and a light incidence face of the indirect emission unit ( 78 ) are disposed at mutually different position around the LED array ( 71 ), and the LED array ( 71 ) is disposed on a side of an interior angle formed by the light incidence faces.

First claim

Opening claim text (preview).

The invention claimed is: 1. An illuminating device comprising: a light-emitting element; a substrate on which the light-emitting element is mounted; a reflective member; and a light-guiding member that guides light emitted from the light-emitting element toward an irradiated object and the reflective member, the illuminating device illuminating the irradiated object with light that has been emitted from the light-emitting element and guided to the irradiated object by th…

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Frequently asked questions

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What does patent US8964264B2 cover?
An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. An LED array ( 71 ) and a reflective plate ( 73 ) are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member ( 72 ) is disposed on the side of the LED array ( 71 ). The lig…
Who is the assignee on this patent?
Sharp Kk
What technology area does this patent fall under?
Primary CPC classification H04N1/0285. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).