Space-Qualified Ultra-thin Cover Glass: Starveil™

Make your equipment longer lifespan and lightweight

Starveil™ is a space-qualified ultra-thin cover glass, suitable for satellite solar cells and various equipment used in outer space. The glass has high ultraviolet rays shielding property, protecting equipment from ultraviolet rays as well as air and water, which contributes to longer lifespan.
Additionally, thinness and lightweight of the glass contribute to weight reduction of satellites and equipment.

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Applications
Features
Specifications
Event Information

Applications

Solar cells
Satellites, Space stations, etc.

image of perovskite structure with solar cells

photo of a satellite with extended solar paddles

Features

High UV shielding properties
Effectively blocks UV-C to UV-B rays and can be combined with a UV cut filter.
Flexibility
Bendable.
High gas barrier properties
Protects devices from water and oxygen degradation.
Thinness
Available in ultra-thin options, with a minimum thickness of 50µm.
Lightweight
Weighs approximately 246g/m² (for a 100µm-thick plate).
Radiation and atomic oxygen resistance
BDX-3 can suppress the reduction in transmittance caused by radiation in outer space.

Specifications

Properties

Properties/Glass code			BDX-2	BDX-3
Density		×10³kg/m³	2.46	2.56
Coefficient of thermal expansion	30～380℃	×10^-7/K	79	93
Strain point		℃	550	480
Annealing point		℃	595	525
Softening point		℃	805	745
Transmittance (thickness: 100μm)	λ=550nm	％	92	91
	λ=400nm		91	90
	λ=350nm		90	49
	λ=300nm		20	<1
Refractive index	nd(587.6nm)		1.52	1.52