ROCOES Optical
HOME > Glass
HOME
>
Glass
>
Borosilicate
Borosilicate Glass Substrates
Borosilicate optical glass (commonly known as low-expansion optical glass or heat-resistant glass) is a high-grade silica and boron trioxide glass engineered for superior thermal shock resistance, excellent mechanical strength, and high chemical durability.
Functions:
Features an exceptionally low coefficient of thermal expansion (CTE), allowing it to withstand prolonged operational temperatures exceeding 450°C without structural warp or thermal fracture. Delivers high broadband light transmittance of up to 92% across the UVA, visible, and near-infrared (NIR) spectral regions.
Applications:
Precision instrument viewports
Optical projector light engines
Semiconductor coating substrates.
High-temperature reaction vessel sight glasses
High-wattage and stage lighting protective covers
#Borosilicate5 #Borosilicate8 #Borosilicate12
#Borosilicate20 #Information and Notes
ITEM NO:EXG0.7 (CORNING Eagle XG)
Spectral Characteristics
Tave>90% @ 400-700nm
Physical Characteristics
EAGLE XG: 0.7mm
Square: 8x8 - 550x650mm
Round: Dia8 - 300mm
Resistant Temperature
450℃
Manufacturer:CORNING
ITEM NO:Borofloat (SCHOTT Borofloat33)
Spectral Characteristics
Tave>92% @ 360-1100nm
Tave<1% @ 200-280nm
Physical Characteristics
Thickness: 1.1, 2.0, 2.75, 3.3, 5mm
Square: 8x8 - 300x300mm
Round: Dia8 - 300mm
Resistant Temperature
450℃
Manufacturer:SCHOTT AG
ITEM NO:E2000 (CORNING Eagle 2000)
Spectral Characteristics
Tave>92% @ 360-1100nm
Tave<1% @ 200-260nm
Physical Characteristics
Thickness: 0.7, 1.1mm
Square: 8x8 - 500x500mm
Round: Dia8 - 500mm
Resistant Temperature
450℃
Manufacturer:CORNING
ITEM NO:Borosilicate5
Spectral Characteristics
Tave>91% @ 380-1100nm
Physical Characteristics
Thickness: 5.0 +/-0.3mm
Square: 50x50 - 600x600mm
Round: Dia50 - 500mm
Resistant Temperature
450℃
ITEM NO:Borosilicate8
Spectral Characteristics
Tave>90% @ 380-1100nm
Physical Characteristics
Thickness: 8.0 +/-0.3mm
Square: 100x100 - 600x600mm
Round: Dia100 - 500mm
Resistant Temperature
450℃
ITEM NO:Borosilicate12
Spectral Characteristics
Tave>90% @ 380-1100nm
Physical Characteristics
Thickness: 8.0 +/-0.3mm
Square: 100x100 - 600x600mm
Round: Dia100 - 500mm
Resistant Temperature
450℃
ITEM NO:Borosilicate20
Spectral Characteristics
Tave>88% @ 420-700nm
Physical Characteristics
Thickness: 20.0 +/-0.5mm
Square: 100x100 - 600x600mm
Round: Dia100 - 500mm
Resistant Temperature
450℃
Information and Notes
1. Borosilicate heat-resistant glass features a significantly lower coefficient of thermal expansion (CTE) than standard commercial float glass, delivering superior thermal shock resistance and high-temperature tolerance without structural failure.
2. Custom geometrical shapes, non-standard thicknesses, precision CNC edging, and custom profiling are available upon request. For additional processing details, please refer to our Glass Processing Services.
3. Spectral transmittance curves represent measurements at normal incidence (0° angle of incidence). Non-transmitted light within the spectrum is absorbed by the physical optical properties of the glass substrate.
4. For applications requiring maximized light throughput, please refer to our Anti-Reflective (AR) Coating Solutions.
5. To enhance mechanical impact strength, compatible borosilicate glass substrates can be chemically strengthened. For details, please refer to our Chemically Strengthened Glass Solutions.
6. Website specifications are provided for reference only. Final production and delivery comply with mutually agreed engineering specifications.
7. SCHOTT BOROFLOAT 33 is a registered trademark of SCHOTT AG.
8. Corning EAGLE XG and EAGLE 2000 are registered trademarks of Corning Incorporated.
