Optical Article Comprising a Substrate with Embedded Particles for Abrasion and/or Scratch Resistance Enchancement
US-2020241174-A1 · Jul 30, 2020 · US
High-performance optical surface
US11619764B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11619764-B2 |
| Application number | US-202016832974-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 27, 2020 |
| Priority date | Mar 27, 2020 |
| Publication date | Apr 4, 2023 |
| Grant date | Apr 4, 2023 |
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- Title
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Abstract
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A high-performance optical surface includes: a substrate having a first surface and a second surface opposite to the first surface; a first anti-reflection (A/R) coating formed on the second surface of the substrate; a coated layer formed over the A/R coating on a surface of the A/R coating opposite to the stress compensation layer, where a surface of the coating layer opposite to the first A/R coating is diamond point turned or polished to improve finish; and a second A/R coating formed on the polished surface of the coating layer to formed the high-performance reflective surface.
First claim
Opening claim text (preview).
What is claimed is: 1. An apparatus with a high-performance optical surface comprising: a substrate having a first surface and a second surface opposite to the first surface; a stress compensation layer formed on the second surface of the substrate; a first anti-reflection (A/R) coating; a coated layer formed over the A/R coating on a surface of the A/R coating opposite to the stress compensation layer, wherein a surface of the coated opposite to the first A/R coating is diamond point turned to form a grating layer to improve finish; and a second A/R coating formed on the grating layer to form the high-performance optical surface. 2. The apparatus of claim 1 , further comprising a third A/R coating on the first surface of the substrate to reduce internal reflection between the substrate and air. 3. The apparatus of claim 1 , wherein the substrate is a bulk silicon. 4. The apparatus of claim 1 , wherein the substrate material is Zinc Selenide (ZnSe), or Zinc sulfide (ZnS). 5. The apparatus of claim 1 , wherein the substrate material is Zinc sulfide (ZnS) Multispectral. 6. The apparatus of claim 1 , wherein the stress compensation layer, the first A/R coating and the coated layer are all formed in a same thin-film vapor deposition process. 7. The apparatus of claim 1 , wherein the coated layer is made of Zinc sulfide (ZnS), Germanium (Ge), or Zinc Selenide (ZnSe). 8. The apparatus of claim 1 , wherein the high-performance optical surface is aspheric. 9. The apparatus of claim 1 , wherein the coated layer is finished by a Magnetorheological Finishing (MRF) process. 10. The apparatus of claim 1 , wherein the coated layer is finished by computer numerical control (CNC) polishing. 11. The apparatus of claim 1 , wherein the coated layer is finished by a diamond point turned process. 12. A telescope comprising the apparatus of claim 1 . 13. A missile guidance system comprising the apparatus of claim 1 . 14. A laser system comprising the apparatus of claim 1 .
Assignees
Inventors
Classifications
on other inorganic substrates · CPC title
of zinc, cadmium or mercury · CPC title
- G02B1/11Primary
Anti-reflection coatings · CPC title
using inorganic layer materials only · CPC title
designed for the infrared light · CPC title
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Frequently asked questions
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- What does patent US11619764B2 cover?
- A high-performance optical surface includes: a substrate having a first surface and a second surface opposite to the first surface; a first anti-reflection (A/R) coating formed on the second surface of the substrate; a coated layer formed over the A/R coating on a surface of the A/R coating opposite to the stress compensation layer, where a surface of the coating layer opposite to the first A/R…
- Who is the assignee on this patent?
- Raytheon Co
- What technology area does this patent fall under?
- Primary CPC classification G02B1/11. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 04 2023 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).