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4.0mm Diameter, Sapphire Half-Ball Lens

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Stock #49-555 In Stock
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C$39.20
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C$39.20
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C$30.80
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Diameter (mm):
4.00
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Sapphire (Al2O3)
Coating:
Uncoated
Type:
Half-Ball Lens
Index of Refraction nd:
1.77
Melting Temperature (°C):
2053.00
Radius R (mm):
2.00
Specific Gravity (g/cm3):
3.98
Sphericity (μm):
0.64
Thickness (mm):
2.00
Compressive Strength (psi):
300,000
Diameter Tolerance (μm):
±2.54

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
REACH 241:

Product Family Description

Sapphire and Ruby Half-Ball Lenses feature a very short back focal length with the convenience of a flat surface for easy mounting. Sapphire features a high index of refraction and excellent broadband transmission characteristics. Ruby half-ball (hemispherical) lenses are easier to see and, therefore, easier to handle for physical applications. Sapphire and Ruby Half-Ball Lenses are very chemically stable and are great for severe environments, high-temperature applications, and applications requiring high melting points. Typical applications include fiber communication, endoscopy, microscopy, optical pick-up devices, and laser measurement systems.