Curved surface backlight unit and curved surface display device including the same
US-2015378188-A1 · Dec 31, 2015 · US
Lighting device
US8998435B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8998435-B2 |
| Application number | US-201214000862-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 26, 2012 |
| Priority date | Feb 24, 2011 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
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The invention relates to a lighting device ( 10 ), comprising a multistage lens ( 1, 2, 3 ), which spectrally and spatially collimates the transmitted light ( 5, 6 ). The illumination device is particularly well suited for use in a display unit.
First claim
Opening claim text (preview).
The invention claimed is: 1. A lighting device comprising: a light source, which comprises at least one light-emitting diode chip and generates light during operation; a first optical element, which collimates the transmitted light of the light source in a predefinable angular range; a second optical element, which reflects back to the light source light of the light source which at least initially does not enter into the first optical element; and a third optical element, w…
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Physics · mapped topic
Physics · mapped topic
- F21V13/12Primary
Mechanical Engineering · mapped topic
Physics · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8998435B2 cover?
- The invention relates to a lighting device ( 10 ), comprising a multistage lens ( 1, 2, 3 ), which spectrally and spatially collimates the transmitted light ( 5, 6 ). The illumination device is particularly well suited for use in a display unit.
- Who is the assignee on this patent?
- Brick Peter, Osram Opto Semiconductors Gmbh
- What technology area does this patent fall under?
- Primary CPC classification F21V13/12. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 07 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).