Light guide plate and backlight module
US-9223079-B2 · Dec 29, 2015 · US
Lighting system and display device
US8998475B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8998475-B2 |
| Application number | US-201214110765-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 12, 2012 |
| Priority date | Apr 19, 2011 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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- Title
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Abstract
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A plurality of prisms 23 e which make an input angle of light from an LED 21 with respect to a rear surface of a light guiding body 23 gradually small are provided on a light emission plane 23 b of the light guiding body 23 , and a plurality of prisms 24 b which cause the light from the LED 21 to be totally reflected to front in an interface between a rear surface of a low refractive index layer 24 and an air layer are provided on the rear surface of the light guiding plate 22 . The light guiding plate 22 further includes an inclined plane 30 which is inclined to an optical axis O of the light from the LED 21 . The inclined plane 30 is configured so as to cause input light to be reflected in the direction which is close to the optical axis O.
First claim
Opening claim text (preview).
The invention claimed is: 1. A lighting system comprising: a light source; and a light guiding member for guiding light from the lighting source, wherein the light guiding member includes a light guiding body to which light from the light source is input, a low refractive index layer which is provided on a rear surface of the light guiding body without an air layer, and of which a refractive index is lower than that of the light guiding body, and an inclined plane which is inc…
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Physics · mapped topic
Physics · mapped topic
- G02B6/002Primary
Physics · mapped topic
- G02B6/0055Primary
Physics · mapped topic
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Frequently asked questions
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- What does patent US8998475B2 cover?
- A plurality of prisms 23 e which make an input angle of light from an LED 21 with respect to a rear surface of a light guiding body 23 gradually small are provided on a light emission plane 23 b of the light guiding body 23 , and a plurality of prisms 24 b which cause the light from the LED 21 to be totally reflected to front in an interface between a rear surface of a low re…
- Who is the assignee on this patent?
- Yuki Ryuzo, Ishida Takeshi, Sharp Kk
- What technology area does this patent fall under?
- Primary CPC classification G02B6/002. Mapped technology areas include Physics.
- 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).