Windows optical for light-emitting diodes
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Seller
Ukraine, Kharkov
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+380
Display phones
Description
Windows optical and preparations with a diameter from 10 to 350 mm and up to 40 mm thick.
Specification
| Sizes, mm | Diameter is up to 350, thickness is up to 40 |
| Accuracy of production, mm on overall dimensions on thickness |
± 0,05 ± 0,05 |
| Blocks, doubles, the twinning layers and cracks, inclusions seen in the polarized light |
Are not allowed |
| Planeness | ≤ 2-3 λ on length of 25 mm (λ = 633 nanometers) |
| Roughness of the polished surface (Ra), Å | From 2 to 100 |
| Quality of the polished surface according to the USA MIL-0-13830 standard |
S/D-80/50, 60/40, 40/20, 20/10 |
| Transmission coefficient (): Visible and IK-area of a range (to 4,5 microns) UF-area of a range (0,2 microns) |
85-87 70 |
| Internal tension, kg/mm2 | ≤ 2 |
| Crystallographic orientation |
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Windows optical for light-emitting diodes