Optical device
US-12072516-B2 · Aug 27, 2024 · US
Spectrum sensor and angle restriction filter
US9012829B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9012829-B2 |
| Application number | US-201113073923-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 28, 2011 |
| Priority date | Mar 29, 2010 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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Abstract
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An angle restriction filter that allows light incident thereon in a predetermined range of incident angles to pass, includes: an optical path wall section formed from a plurality of light shield members laminated in layers including a common material, thereby forming an optical path in a lamination direction of the light shield members; and a light transmission section formed in a region surrounded by the optical path wall section.
First claim
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What is claimed is: 1. An angle restriction filter that allows light incident thereon in a predetermined range of incident angles to pass, comprising: an optical path wall section formed from a plurality of light shield members laminated in layers, thereby forming an optical path, wherein each light shield member has a cross-sectional shape wider at one end such that a surface forming a portion of the optical path wall is oriented slightly downward; and a light transmission sect…
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Frequently asked questions
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- What does patent US9012829B2 cover?
- An angle restriction filter that allows light incident thereon in a predetermined range of incident angles to pass, includes: an optical path wall section formed from a plurality of light shield members laminated in layers including a common material, thereby forming an optical path in a lamination direction of the light shield members; and a light transmission section formed in a region surrou…
- Who is the assignee on this patent?
- Nakamura Noriyuki, Seiko Epson Corp
- What technology area does this patent fall under?
- Primary CPC classification G01J3/51. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 21 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).