OPTICAL COMPONENT FOR REDIRECTING LIGHT
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United States of America Patent
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Issued Date -
Oct 3, 2024
app pub date -
Aug 9, 2022
filing date -
Aug 10, 2021
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Abstract
An optical component includes a substrate, the substrate including a first surface having a surface flatness oOJ4 (peak-valley) wherein the optical component transmits no more than 0.001% of light at 532 nm at an angle of incidence between 45-90°. The substrate is one-piece including no joints, no seams, or any formerly separate pieces, and made of black quartz. The optical component can include a radiation absorbing layer on the substrate, wherein the radiation absorbing layer includes one of tungsten, tungsten carbide, silicon carbide, black chrome, black oxide, and black paint.
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