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Phone: +86 431 84631230
Fax: +86 431 84631230
- Type: Lenses
- Diameter / Dimension: 3mm - 500mm
- Lens Category: Spherical Lens
- Applications: Astronomy, Biomedical/Medical, Communications, Industrial, Military, Scientific Research, Other
- Dimension Tolerance: ±0.01 mm
- Surface Quality: 40-20
- Surface Accuracy: 5/1
- Decentration: 0.05
Glued doublet is an achromatic consisting of a positive low-index crown glass lens element cemented to a negative high-index flint glass lens element. The elements are chosen so as to cancel chromatic aberration at two well-separated wavelengths, usually in the blue and red region of the spectrum. Focal length is constant at those two wavelengths and focal length shifts are virtually eliminated across the visible wavelengths.
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