Optical device
US-2025063127-A1 · Feb 20, 2025 · US
Erecting equal-magnification lens array plate and image reading device
US8947747B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8947747-B2 |
| Application number | US-201113010484-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 20, 2011 |
| Priority date | Jan 21, 2010 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
An image reading device includes: a document table on which a document G is placed; a line light source configured to illuminate the document G; an erecting equal-magnification lens array plate configured to receive light reflected from the document G and form an erect equal-magnification image on a predetermined image plane; and a line image sensor configured to receive the erect equal-magnification image formed by the erecting equal-magnification lens array plate. The erecting equal-magnification lens array plate includes: first and second lens array plates formed with a plurality of lenses on both sides thereof; a first shielding member provided on the first outer side surface of the first lens array plate; and a light-shielding wall provided upright on the top surface of the first light-shielding member and configured to shield light reflected by the document table.
First claim
Opening claim text (preview).
What is claimed is: 1. An erecting equal-magnification lens array plate configured to receive light emitted by a line light source and reflected from a document placed on a document table, and form an erect equal-magnification image on a light receiving surface of a line image sensor, wherein the equal-magnification lens array plate comprises: a first lens array plate formed with a plurality of lenses on each of two surfaces thereof and arranged such that one of the surfaces is…
Assignees
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Classifications
Electricity · mapped topic
Electricity · mapped topic
- H04N1/0311Primary
Electricity · mapped topic
Electricity · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8947747B2 cover?
- An image reading device includes: a document table on which a document G is placed; a line light source configured to illuminate the document G; an erecting equal-magnification lens array plate configured to receive light reflected from the document G and form an erect equal-magnification image on a predetermined image plane; and a line image sensor configured to receive the erect equal-magnifi…
- Who is the assignee on this patent?
- Ikeda Makoto, Kato Hiroaki, Nippon Sheet Glass Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04N1/0311. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 03 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).