| Customization: | Available |
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| Usage: | Lighting, Medical, Optical, Photography, Astronomy |
| Type: | Concave Lens |
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The plano concave lens is used to diverge the parallel light outward. The focal length of the flat concave lens is negative and the spherical aberration is also negative. It can be used to correct the phase difference, spherical aberration, coma and distortion of other lenses. Similar to the flat concave mirror, the side is generally opposite to the far object surface or infinity.
| Items | Parameters |
| Material | optical glass, H-K9L (N-BK7) |
| Outer circle: | 3mm-500mm ± 0.1mm |
| Radius of curvature: | ± 1mm - ± 50000mm ± 1% |
| Center thickness tolerance: | ± 0.05mm (we can process to ± 0.01mm with high precision) |
| Center deviation: | 3′(we can process to 30 ″with high precision) |
| Surface accuracy: | λ/ 8 (high precision, we can process to 1 / 10λ) |
| Surface quality: | 60/40 (we can process to 10-5 with high precision) |
| Effective caliber: | ≥90% |
| Coating: | Maultilayer Antireflective Coating A:400-700nm B:650-1050nm C:1000-1650nm |
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