Light diffusion sheet, backlight unit, liquid crystal display device, and information equipment
US-2024012286-A1 · Jan 11, 2024 · US
Surface microstructures for light shaping reflectors
US9459382B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9459382-B2 |
| Application number | US-201113174702-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2011 |
| Priority date | Jun 30, 2011 |
| Publication date | Oct 4, 2016 |
| Grant date | Oct 4, 2016 |
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- Title
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- Abstract
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Abstract
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A method for designing microstructures for a light shaping reflector for use in a light field display is provided. A mathematical function is derived to reflect light uniformly from an incident light beam. Curved elements shaped by the mathematical function are combined to design the microstructures. The microstructures are formed in a reflective surface to provide the light shaping reflector for use in the light field display.
First claim
Opening claim text (preview).
What is claimed is: 1. A light shaping reflector for use in a light field display, the light shaping reflector comprising: a reflective surface; and a plurality of microstructures formed in the reflective surface, the microstructures defined by a mathematical function to reflect light uniformly from an incident light beam, wherein the microstructures comprise convex and concave curved elements, the convex curved elements being convex when facing the incident light beam, and the concave curved elements being concave when facing the incident light beam, and the convex and concave curved elements comprise: a first convex curved element having a first size, a first concave curved element having a second size different from the first size, a second convex curved element having a size different from the first size, and a second concave curved element having a size different from the second size. 2. The light shaping reflector of claim 1 , wherein the incident light beam is locally uniform close to the microstructures. 3. The light shaping reflector of claim 1 , wherein the mathematical function is derived from a scaled function. 4. The light shaping reflector of claim 1 , wherein the mathematical function comprises a function given by h ( x , y ) = γ ( 1 - 1 + ( x / γ ) 2 + ( y / γ ) 2 + ln ( 1 + 1 + ( x / γ ) 2 + ( y / γ ) 2 2 ) where γ is a scaling factor, and x and y represent different directions.
Assignees
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Classifications
with aligning, guiding, or instruction · CPC title
Optical design, e.g. procedures, algorithms, optimisation routines · CPC title
with curved faces · CPC title
the surface having an irregular structure (G02B5/0226 takes precedence) · CPC title
- G02B5/0215Primary
the surface having a regular structure · CPC title
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- What does patent US9459382B2 cover?
- A method for designing microstructures for a light shaping reflector for use in a light field display is provided. A mathematical function is derived to reflect light uniformly from an incident light beam. Curved elements shaped by the mathematical function are combined to design the microstructures. The microstructures are formed in a reflective surface to provide the light shaping reflector f…
- Who is the assignee on this patent?
- Said Amir, Kalker Antonius, Hewlett Packard Development Co Lp
- What technology area does this patent fall under?
- Primary CPC classification G02B5/0215. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 04 2016 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).