See-through computer display systems
US-2024210705-A1 · Jun 27, 2024 · US
Light source unit and projection display device with the same
US9103527B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9103527-B2 |
| Application number | US-201113823838-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 15, 2011 |
| Priority date | Nov 18, 2010 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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- Title
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Abstract
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A light source unit includes LED 1 with an emission surface and polarizer 2 that is positioned opposite the emission surface of LED 1 and in which the direction of a transmission axis varies depending on a position in the plane of polarizer 2 . Polarizer 2 includes a recessed and protruding structure which transmits, from among light that travels from LED 1 side into polarizer 2, a portion of the light whose polarization direction is parallel to the transmission axis, while reflecting and diffracting a portion of the light whose polarization direction is orthogonal to the transmission axis. The recessed and protruding structure includes diffraction grating 3.
First claim
Opening claim text (preview).
What is claimed is: 1. A light source unit comprising: a light emitting element with an emission surface; and a polarizer that is provided opposite the emission surface of said light emitting element and in which a direction of a transmission axis varies depending on a position in a plane of said polarizer, wherein said polarizer includes a recessed and protruding structure which transmits, from among light that exits from the emission surface and that travels from said light…
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Classifications
Electricity · mapped topic
- G02B5/3025Primary
Physics · mapped topic
Physics · mapped topic
Electricity · mapped topic
- F21V9/14Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9103527B2 cover?
- A light source unit includes LED 1 with an emission surface and polarizer 2 that is positioned opposite the emission surface of LED 1 and in which the direction of a transmission axis varies depending on a position in the plane of polarizer 2 . Polarizer 2 includes a recessed and protruding structure which transmits, from among light that travels from LED 1 side into polarizer 2, a p…
- Who is the assignee on this patent?
- Tomiyama Mizuho, Nec Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B5/3025. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 11 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).