Multi-channel optical system
US-11698526-B2 · Jul 11, 2023 · US
Catadioptric optical system with total internal reflection for high numerical aperture imaging
US8947775B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8947775-B2 |
| Application number | US-201213492078-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 8, 2012 |
| Priority date | Jun 8, 2012 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A catadioptric optical system includes, in order from an object side to an image side and arranged along an optical axis, a first catadioptric unit, a second catadioptric unit disposed in axial alignment with the first catadioptric unit and with a space therebetween; and a lens group disposed in axial alignment with the first and second catadioptric optical units. Light rays arriving from an object plane undergo a first reflection at the image-side surface of the first catadioptric optical unit, a second reflection at the object-side surface of the first catadioptric optical unit, a third reflection at the image-side surface of the second catadioptric optical unit, and a fourth reflection at the object-side surface of the second catadioptric optical unit. Advantageously, the sum the outward Petzval curvatures is cancelled out by the sum of inward Petzval curvatures.
First claim
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What is claimed is: 1. A catadioptric optical system comprising, in order from an object side along an optical axis: a first catadioptric unit; a second catadioptric unit disposed so as to have a space from the first catadioptric unit; and a lens group, wherein the first catadioptric unit includes a first object-side surface having a concave specularly reflective portion, and a first image-side surface having a first transmissive portion and a total internal reflection porti…
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Physics · mapped topic
- G02B17/084Primary
Physics · mapped topic
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- What does patent US8947775B2 cover?
- A catadioptric optical system includes, in order from an object side to an image side and arranged along an optical axis, a first catadioptric unit, a second catadioptric unit disposed in axial alignment with the first catadioptric unit and with a space therebetween; and a lens group disposed in axial alignment with the first and second catadioptric optical units. Light rays arriving from an ob…
- Who is the assignee on this patent?
- Sasian-Alvarado Jose Manuel, Nakano Masatsugu, Univ Arizona State, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G02B17/084. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 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).