| Shape: | Achromatic |
|---|---|
| Structure: | Double Concave |
| Usage: | Achromatic |
| Material: | Glass |
| Model Number: | Achromatic Lenses |
| Brand Name: | crysmit |
| Place of Origin: | China (Mainland) |
Quick Details
Specifications
Achromatic Lenses are designed to specifically function within the infrared, visible, or ultra-violet wavelength ranges, and they are not symmetric devices. They must be installed with the correct front-to-back orientation (thicker element usually faces the eyes). If installed incorrectly, with the lens orientation installed backwards the result will be extensive distortion and aberration.
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Attribute
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Specification
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Design Wavelength
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upon request
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Diameter Tolerance(mm)
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+0.0/-0.2 (General),+0.0/-0.2(High Precision)
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Paraxial Focal Length Tolerance
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±2%
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Centration
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<3 arc minutes
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Clear Aperture
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->80%(small size) ,>95%(large size)
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Surface Figure(per 25mm @ 632.8nm)
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<1.5λ, (General), <λ/4 (High Precision)
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Irregularity ( @ 632.8nm)
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<λ/4 (General), <λ/10 (High Precision)
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Surface Quality
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60/40 (General), 10/5 (High Precision)
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Bevel
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< 0.25 mm x 45°
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Coating
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upon request
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