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Optical element producing a modulated region of increased light intensity and optically enhanced photovoltaic cell and LED lighting device including the same

US9099592B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9099592-B2
Application numberUS-201113180614-A
CountryUS
Kind codeB2
Filing dateJul 12, 2011
Priority dateJul 13, 2010
Publication dateAug 4, 2015
Grant dateAug 4, 2015

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

An optical element has a plano-plano body formed of a first material having a greater refraction index n 1 and a second material having a lesser refraction index n 2 . Both indices are greater than one. The absolute value of the index contrast, log 10 (n 1 /n 2 ), is in the range from about 0.001 to about 0.17, preferably from about 0.01 to about 0.05. The materials have an induced absorbance rate ΔAbs/Dose less than or equal to about 0.4, preferably less than or equal to about 0.2. The materials are arranged such that an interface with at least one cusp is defined therebetween. The cusp has an apex pointed toward the material having the greater index of refraction. The cusp is operative to produce a region of increased light intensity on one surface of the optical element in response to light incident on the other surface of the optical element.

First claim

Opening claim text (preview).

What is claimed is: 1. A display device comprising: a display panel having at least one light transmissive pixel element bounded on its periphery by a obscured region; and a piano-piano optical element having opposed, substantially planar first and second surfaces and mounted over the display panel, the optical element itself comprising: a body having a first portion and a second portion, the first portion being formed from a first material having an index of refraction n 1 , t…

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Frequently asked questions

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What does patent US9099592B2 cover?
An optical element has a plano-plano body formed of a first material having a greater refraction index n 1 and a second material having a lesser refraction index n 2 . Both indices are greater than one. The absolute value of the index contrast, log 10 (n 1 /n 2 ), is in the range from about 0.001 to about 0.17, preferably from about 0.01 to about 0.05. The materials have an induced absorbance…
Who is the assignee on this patent?
Derryberry Rebekah Ann, French Roger Harquail, Lewittes Mark E, and 3 more
What technology area does this patent fall under?
Primary CPC classification H10F77/484. Mapped technology areas include Electricity.
When was this patent published?
Publication date Tue Aug 04 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).