Sapphire Windows Glass Lens Substrates Al2O3 Crystal Circle Round Fan Square
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Welcome to Know Sapphire~~

Sapphire without impurities is a transparent crystal with no absorption from the visible spectrum to the infrared (5μm) range. A window made of this sapphire. Sapphire crystal can be used as protective glass because its hardness is very high and it is not easy to be damaged.
Synthetic sapphire is a transparent single crystal 99.99% pure Al2O3 that exhibits a unique combination of physical, chemical, electrical, and optical properties: high thermal conductivity, high strength, and scratch resistance, hardness (9 on the Mohs scale), transparent in a wide range of wavelength, chemical inertness.
High crystal perfection, low reactivity, and appropriate unit cell size make sapphire an excellent substrate in the semiconductor industry for blue light-emitting diodes (LED).
Since Nobel Laureate in Physics Shuji Nakamura used the sapphire substrate in the 1990s for LED, the demand for sapphire crystal has been growing rapidly.
It drives development of new markets like general lighting, backside lighting in TV sets, displays, consumer appliances, aerospace and defense, and other applications

Item #	Sapphire Windows, Uncoated
Diameter	1/2" (12.7 mm)	1" (25.4 mm)
Diameter Tolerance	+0.0 / -0.2 mm
Thickness	3.0 mm	5.0 mm
Thickness Tolerance	±0.3 mm
Clear Aperture	≥Ø11.43 mm	≥Ø22.86 mm
Parallelism	≤3 arcmin
Transmitted Wavefront Error	<λ/4 Over Central Ø5 mm ≤λ/2 Over Full Clear Aperture	-
Surface Flatness	λ Over Clear Aperture
Surface Quality	60-40 Scratch-Dig
Wavelength Range	200 nm - 4.5 μm (Uncoated)
Substrate	Sapphire
Transmission Data

Available orientations:	C-axis [0001], R-axis [1-102], A-axis [11-20], M-axis [10-10], Random
Sapphire windows / blanks
Diameter / Width:	25.0 - 250.0 mm
Tolerance:	Standard ± 2°, Special to ± 0.1°
Thickness:	Minimum 0.15, maximum 120.0 mm
Surface finish:	As cut, fine ground, lapped, polished s/d 80/50, 60/40, 40/20, 20/10, 10/5, according to the MIL-0-13830A
Ends / Edge quality:	Fine ground, 80/50
"As-grown" sapphire tubes:
Dimensions	Up to 50 mm inner diameter, 0,5 - 4,0 mm wall thickness, 300-600 mm tubes length
Orientation	C-axis in the length of the tube
Polished sapphire tubes:	Up to 50 mm inside diameter, 0,5 - 3,0 mm wall thickness, 80-350 mm tubes length
Ingots:	Diameter/Width 5-220 mm, Thickness/Length 25 – 125 mm
Surface quality	As-cut, Ends/Edge Quality Diamond cut

Sapphire window details

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sapphire optical dome sapphire substrates

1. We can fabricate the sapphire glass from rough material plate to polished window
2. We have the very Fast delivery capacity within 15days by Customized size
3. In addition,we Support { ONE WEEK REFUND MONEY} if not qualified.
4. We also can make substrates, wafers, rods,Bump join; Lens with step＆hole