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US-2024178789-A1 · May 30, 2024 · US
Electrowetting retroreflector devices, systems, and methods
US9122005B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9122005-B2 |
| Application number | US-40582109-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 17, 2009 |
| Priority date | Mar 17, 2008 |
| Publication date | Sep 1, 2015 |
| Grant date | Sep 1, 2015 |
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- Title
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Abstract
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Switchable retroreflector devices that are modulated via electrowetting. The devices include an electrically-conductive polar fluid and a non-polar fluid that is immiscible with the polar fluid. The polar and the non-polar fluids differ in at least one optical property. The fluids are contained in a fluid vessel, or an array of fluid vessels. The fluids are at least partially viewable. A voltage source is configured to selectively apply an electromechanical force to the polar fluid causing repositioning and/or geometrical change of the fluids such that retroreflection in created, or suppressed, by optical refraction or by optical attenuation.
First claim
Opening claim text (preview).
What is claimed is: 1. A switchable retroreflector device comprising: a fluid vessel having an area therein; an electrically-conductive, polar fluid occupying at least a portion of the fluid vessel; a non-polar fluid that is immiscible with the polar fluid, the non-polar fluid occupying a portion of the fluid vessel that is not occupied by the polar fluid and that differs from the polar fluid in at least one optical property; retroreflective surface operably coupled t…
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Physics · mapped topic
Physics · mapped topic
- G02B5/124Primary
Physics · mapped topic
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- What does patent US9122005B2 cover?
- Switchable retroreflector devices that are modulated via electrowetting. The devices include an electrically-conductive polar fluid and a non-polar fluid that is immiscible with the polar fluid. The polar and the non-polar fluids differ in at least one optical property. The fluids are contained in a fluid vessel, or an array of fluid vessels. The fluids are at least partially viewable. A voltag…
- Who is the assignee on this patent?
- Heikenfeld Jason, Kilaru Murali, Schultz Phillip, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G02B5/124. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 01 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).