Image display device
US-9835859-B2 · Dec 5, 2017 · US
Projection display device for projecting an input unit image
US8950870B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8950870-B2 |
| Application number | US-201314084445-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 19, 2013 |
| Priority date | Sep 3, 2008 |
| Publication date | Feb 10, 2015 |
| Grant date | Feb 10, 2015 |
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Abstract
Official abstract text for this publication.
A projection display device ( 100 ) capable of providing a virtual keyboard function to the user, using a light source of a pico projector, is discussed. According to an embodiment, the projection display device includes a light source unit ( 110 ) configured to emit lights; a light combining unit ( 120 ) configured to generate a leakage light from the lights emitted by the light source ( 110 ) unit and to selectively combine the lights from the light source unit ( 110 ); an image projection unit ( 130 ) configured to project an image using the combined light from the light combining unit ( 120 ); and a virtual input unit ( 140 ) configured to project an input unit image ( 150 ) using the leakage light from the light combining unit ( 120 ).
First claim
Opening claim text (preview).
The invention claimed is: 1. A projection display device comprising: a light source unit configured to emit lights; a light dividing unit configured to divide a first projection light and a second projection light from the lights emitted by the light source unit; an image projection unit configured to project an image using the first projection light from the light dividing unit; and a virtual input unit configured to project an input unit image using the second projection l…
Assignees
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- G02B27/104Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G03B21/142Primary
Physics · mapped topic
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- What does patent US8950870B2 cover?
- A projection display device ( 100 ) capable of providing a virtual keyboard function to the user, using a light source of a pico projector, is discussed. According to an embodiment, the projection display device includes a light source unit ( 110 ) configured to emit lights; a light combining unit ( 120 ) configured to generate a leakage light from the lights emitted by the light source ( 110 )…
- Who is the assignee on this patent?
- Lg Electronics Inc
- What technology area does this patent fall under?
- Primary CPC classification G02B27/104. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 10 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).