 Achromatic Lenses, Doublet, Achromat, Cemented Lenses, Glued Lenses (Offer to Sell)
Trade Lead Description:
Achromatic Lens
Achromatic (Doublets) Lenses Achromat consists 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. One frequent use is to achieve diffraction limited focusing of a laser beam. Negative Achromat is typically used when there is a need to eliminate chromatic aberration. In addition to reducing chromatic aberration at the design wavelengths, spherical aberration and coma are greatly reduced.
Specifications: Material: Grade A optical glass or Fused Silica
Dimension Tolerance: +0.0, -0.1mm
Center Thickness Tolerance: ±0.1mm
Paraxial Focal Length: ±2%
Surface quality: 60/40
Clear Aperture: >85%
Surface Figure: λ/4 @633nm
Centration:
3'
| Type of Offer: |
Offer to Sell |
| Quantity: |
10~1000 |
| Packaging: |
Neutral Packing |
| Price / Incoterms Conditions: |
10~1000 |
Posted from China - Fujian on 31 December, 2012
Last Modified on 28 January, 2013
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