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D 263 T is a nearly colorless flat borosilicate thin glass made by SCHOTT. The specific properties and an extensive range of standard thicknesses make D 263 T specialty glass ideal for many technical glass applications. Due to the very smooth fire-polished surfaces, D 263 T glass does not require an additional mechanical polishing treatment. D 263 T exceeds the surface quality grade, smoothness, and flatness of most commercial polishing processes. The micro-roughness of the glass surfaces is typically less than 1 nm (RMS).
Measured against optical standards that apply to thicker glass, the possible flatness of ultra-thin glass is limited for technical and physical reasons. The natural weight alone is a limiting factor for the possible flatness of ultra-thin glass. Nevertheless, even low glass thicknesses offer excellent flatness and optical surface quality that mechanically polished thin glass can hardly outperform.
SCHOTT produces D 263 T borosilicate thin glass by melting the purest raw materials. The specialty glass is resistant to chemical attack and offers a high uniform optical transmittance in the visible range. Moreover, D 263 T glass offers higher infrared transmission than most other thin glass materials (you can obtain IR transmittance curves on request).
D 263 glass is a perfect choice for display technology, but it is also an ideal substrate for optics, micro-optics, and glass wafer applications. It is often the best glass material for microscope slides and thin or ultra-thin coverslips with high optical quality in research and science.
The glass is nearly always available from us in various extremely thin thicknesses with very low tolerances. Our 48–hour express-service capabilities are also available for this material.
To receive a quote for windows, substrates, or wafer components of original SCHOTT D 263 T or D 263 T eco* borosilicate glass with individual dimensions, please click the button below or select a thickness from the table.
*The D263 T eco materials have been made by SCHOTT using eco-friendly refining agents.
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Transmission at 0.7 mm thickness
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UV-Transmission at 0.7 mm thickness
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Thickness (mm) |
Tolerance |
|
---|---|---|
0.030 | ±0.008 | — |
0.050 | ±0.010 | — |
0.100 | ±0.015 | ✔ |
0.145 | ±0.015 | ✔ |
0.175 | ±0.015 | ✔ |
0.210 | ±0.020 | ✔ |
0.300 | ±0.020 | ✔ |
0.400 | ±0.020 | ✔ |
0.550 | ±0.050 | ✔ |
0.550 | ±0.015 | ✔ |
0.700 | ±0.050 | ✔ |
1.100 | ±0.050 | ✔ |
1.100 | ±0.030 | ✔ |
The thicknesses marked with "✔" are also available within 48–hour express service. | ||
The thicknesses 0.070, 0.50 and 0.90 mm are sometimes available. If required, please send us a corresponding request. |
Refractive index numbers |
||
---|---|---|
Designation |
Wavelength (nm) |
Refractive Index |
ng |
436 |
1.5354 |
nF' |
480 |
1.5305 |
nF |
486 |
1.5300 |
ne |
546 |
1.5255 |
nd |
587.5 |
1.5231 |
nD |
589.3 |
1.5230 |
nC' |
644 |
1.5209 |
nC |
656 |
1.5204 |
Dielectric Constant (permittivity) εr |
||||||
---|---|---|---|---|---|---|
Frequency in GHz | 0.001 |
1.0 |
2.0 |
5.0 |
24 |
77 |
6.7 |
6.4 |
6.4 |
6.3 |
6.3 |
6.1 |
Loss Tangent tan(δ) x 10-4 |
||||||
---|---|---|---|---|---|---|
Frequency in GHz | 0.001 |
1.0 |
2.0 |
5.0 |
24 |
77 |
61 |
74 |
81 |
101 |
210 |
240 |
Other materials from SCHOTT in our extensive delivery program are AF 32 eco, AS 87 eco, B 270 Superwite, BK7, and BOROFLOAT® 33. For further technical information, please feel free to contact us.
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Last update: May 17, 2024