product origin:
Chinashipping port:
Fuzhou Chinalead time:
4 working weekspayment:
T/T Payment, Western UnionSapphire Windows are manufactured from single crystal sapphire, making them ideal for demanding applications (such as laser systems) because of their extreme surface hardness, high thermal conductivity, high dielectric constant and resistance to common chemical acids and alkalis. Sapphire is the second hardest crystal next to diamonds and, because of their structural strength, sapphire windows can be made much thinner than other common dielectric windows with improved transmittance. Chemically, sapphire is single crystal aluminum oxide (Al2O3) and is useful in a transmission range from 0.2 - 5.5μm.
Common Specifications
Abbe Number (vd): 72.24
Birefringence (no-ne): 0.008 for Visible Light Orthogonal to Optical Axis
Clear Aperture (%): ≥90
Coating: Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C): 8.8
Density (g/cm3): 3.97
Index of Refraction nd: 1.77
Orientation of Axis: Random
Parallelism (arcmin): ≤3.5
Poisson's Ratio: 0.27
Substrate: Sapphire (Al2O3)
Surface Flatness: 2λ(typical)
Surface Quality: 80-50
Surface Roughness (μm): 0.1 per Inch
Wavelength Range (μm): 0.2 - 5.5
Wavelength Range (nm): 200 - 5500
Young's Modulus (GPa): 435
Knoop Hardness (GPa): 1900
Features:
Transmission in 0.3-5.0μm, no absorption in 2-3μm
Extremely hard and durable
High thermal conductivity
High bulk damage threshold
Note for Sapphire Window:
(1). Custom-made Sapphire windows at any size are available.
Besides round, Sapphire windows at the shape of quadrate, triangular, or other polygonal are available
(2). Other thickness from 0.5mm to 50.0 mm is available upon request.
(3). Better bevel is available upon request.
(4). Windows with Anti-Reflective(AR)
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UN-TFA0614C
Product Features:
1. Compatible for 2/3'' Format Sensor
2. Ultra-compact Design
3. Ultra Low Distortion
4. High Relative Illumination
5. High Cost Performance
6. Supply with Focus and Iris locking screws.
Product information: Custom designs are available upon request.
Download the datasheet of UN-TFA0614C
Fused Silica Ball and Half-Ball Lenses
N-BK7 metallic coated mirror
1、What Metallic Coated types can Uni-Optics supply?
Uni-Optics mainly offers four coating types, including:
1) UV Enhanced Aluminum : Ravg > 85% from 250nm to 400nm
2) Protected Aluminum: Ravg > 87% from 400nm to 800nm
3) Protected Silver: Ravg > 95% from 400nm to 20um
4) Protected Gold: Ravg > 98% from 650nm to 16um
2、What are the features of Metallic coated mirror?
Metallic coated mirror have many key features below:
Wide spectral range
Not sensitive to the incidence angle and polarization state
Low cost
Non-durable
Relatively low reflectance
Low laser damage threshold
3、What UNI Optics can do for you?
Common Specifications:
Substrate Materials: N-BK7, Fused silica, Pyrex；Float glass
Dimensional tolerance: +/-0.1mm
Surface quality: 60-40
Parallelism: 3’
Flatness: λ/4 per 25mm@633nm
Bevel: Protective
One surface: Polished and Metallic coating
The other surface: Fine ground
Note: Aluminum is the most widely used metal reflection film, from near UV to near IR, have high reflectivity, and with low cost. Silver has higher reflectivity in the visible and near infrared wavelength than the aluminum film, but the silver in the air will be rapid oxidation, color darkening, makes the film performance and firmness declined rapidly. Gold film has a good consistency with high reflectivity in the near, middle and far infrared range, can control the thermal radiation effectively, but it is relatively soft, easy bruising, and should be paid very close attention to clean, and the cost is very high.
Tel : +86-591-86395085
Email : sales@uni-optics.com
