Sapphire Optics

Name: Sapphire Optics
Brand: Ecoptik

ECOPTIK provides a variety of sapphire optical component, such as sapphire lens, sapphire window, sapphire mirror, sapphire cylindrical lens, sapphire prism, sapphire light guide, sapphire dome and so on.

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Descriptions
Specifications

Sapphire Optics Descriptions

Sapphire (Single crystal Al₂O₃) is a commonly used optical material, mainly based on its several characteristics.

Ultra-long applicable wavelength band: it can transmit from ultraviolet (UV=150nm) wavelength to mid-infrared (IR=5um) wavelength, and has high transmittance
Excellent physical properties: including strength, high hardness, high temperature resistance, friction resistance, and corrosion resistance.
Stable chemical properties, such as not being corroded by acids and alkalis.

Sapphire Optics Specifications

Crystallographic	Syngony	Tetragon
	Symmetry Class	3m
	Lattice Constants	a = 4.758 Å c = 12.991 Å
	Cleavability	(1011), (1120) imperfect
Optical	Refractive Index at ne	1.7771
	Refractive Index at nF' - nC'	0.0107
	Thermal Coefficient of Refractive Index at 3.39 microns for ±60 °C	βo = (0.88 ... 1.28) x 10-5 βe = (0.99 ... 1.39) x 10-5
	Spectral Range, microns	0.17 - 5.0
Thermal	Thermal Linear Expansion, °C-1 for ±60 °C
	⊥ to c-axis	(3.24 ... 5.66) x 10-6
	Thermal Conductivity, W/(m * °C) at 46 °C
	⊥ to c-axis	25.2
	\|\| to c-axis	23.1
	Specific Heat Capacity, J/(kg * °C)	0.7610 x 103
	Thermal Stability, °C	162 ±8
	Melting Point, °C	2030
Chemical	Molecular Weight	101.96
Chemical	Solubility in water, gram/100 cm3	98 x 1010

Ref. Index vs. Wavelength λ

Wavelength, Microns	Refractive Index no	Refractive Index ne
1.0	1.7545	1.7460
2.0	1.7374	1.7299
3.0	1.7015	1.6920
4.0	1.6748	1.6679

Internal Transmittance Ti (λ) vs. Wavelength λ

Wavelength, Microns	Internal Transmittance
0.2	0.79
0.5	0.97
1.0	0.97
3.0	0.97
5.0	0.45

Application of sapphire component.

Widely used in infrared and far-infrared military equipment, such as: used in night vision infrared and far-infrared sights, night vision cameras and other instruments and satellites, space technology instruments and meters, as well as windows for high-power lasers, various Optical prisms, optical windows, UV and IR windows and lenses, and observation ports for low-temperature experiments are fully used in high-precision instruments and meters for navigation, aerospace, and aviation.

Sapphire window/ lens

	Commercial grade	Precision grade	High precision grade
Diameter	1-300mm
Diameter tolerance	±0.1mm	±0.05mm	±0.01mm
Thickness tolerance	+0/-0.1mm	±0.05mm	±0.01mm
Parallelism	<3 arc min	<30 arc sec	<5 arc sec
Surface quality:	60/40	40/20	20/10
Surface accuracy	λ	λ/4	λ/10

Interested in Optical Products?
Don’t hesitate to contact Ecoptik.

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Optical elements can be large astronomical survey mirrors or small optical communication elements.It could be in a spacecraft
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