Ball Lens
Ball lens is the simplest type of optical lens. The basic principle of ball lens imaging is refraction. When light travels from one medium (such as air) into another medium of different density (such as glass), its direction of propagation changes. The focal length (f) of a ball lens depends on its diameter (D) and the refractive index (n) of the material it is made of. Its approximate formula is: f ≈ D / (4(n-1))
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Overview
Specifications
| Parameter | Value |
|---|---|
| Substrate Material | H-K9L(CDGM), Sapphire, Ruby, JGS1, JGS2, Silicon, High Borosilicate etc. |
| Dimension | 0.5mm~80mm |
| Diamerter Tolerance [In general] | ±0.1mm |
| Diamerter Tolerance [Best] | ±0.005mm |
| Sphericty | 0.01 mm (10 µm), 0.005mm (5 µm), 0.001mm (1 µm) |
| Center Tolerance | ±0.03mm~0.05mm |
| Surface Quality | 60/40, 40/20, 20/10, 10/5 |
Applications
Key Features
Datasheet
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Supplier Information
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