Light-reflecting film and light reflector using the same
US-2016259102-A1 · Sep 8, 2016 · US
Method and apparatus for reducing non-normal incidence distortion in glazing films
US12017398B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12017398-B2 |
| Application number | US-202318297468-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 7, 2023 |
| Priority date | Dec 3, 2019 |
| Publication date | Jun 25, 2024 |
| Grant date | Jun 25, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A method of manufacturing a polymer film includes melting a resin, extruding the melted resin through a die to produce a polymer film, shaping the polymer film, cooling the polymer film, capturing an image of a test pattern through the polymer film, calculating a modulation transfer function value from the image, and adjusting a process parameter of the melting, the extruding, the shaping, or the cooling based on the calculated modulation transfer function value.
First claim
Opening claim text (preview).
What is claimed is: 1. A polymer film having a density variation such that: a difference between i) a first modulation transfer function value calculated from an image of a test pattern captured through the polymer film with the polymer film at an angle of 60 degrees relative to the test pattern and ii) a baseline modulation transfer function calculated from an image of the test pattern that is not taken through the polymer film is less than 0.12; and a difference between i) a second modulation transfer function value calculated from an image of a test pattern captured through the polymer film with the polymer film at an angle of 70 degrees relative to the test pattern and ii) the baseline modulation transfer function is less than 0.38.
Assignees
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Classifications
using screws surrounded by a cooperating barrel, e.g. single screw extruders · CPC title
Angular velocity · CPC title
bi-axially · CPC title
PET, i.e. poylethylene terephthalate · CPC title
- B29C48/87Primary
Cooling · CPC title
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- What does patent US12017398B2 cover?
- A method of manufacturing a polymer film includes melting a resin, extruding the melted resin through a die to produce a polymer film, shaping the polymer film, cooling the polymer film, capturing an image of a test pattern through the polymer film, calculating a modulation transfer function value from the image, and adjusting a process parameter of the melting, the extruding, the shaping, or t…
- Who is the assignee on this patent?
- Racing Optics Inc, Ro Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification B29C48/87. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 25 2024 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).