40 DN 16 Negative Achromatic Doublets
Description
These doublets easily outperform equivalent singlets even in monochromatic light, being corrected for spherical aberration and coma, as well as for chromatic aberration. Their performance and uses depend on the relative aperture. They give essentially diffraction-limited performance on axis. Negative doublets are commonly inserted between an objective and its image to increase the tube length (as in microscopy) or magnification (as astronomy - a Barlow lens). they are therefore optimised for these conditions with a magnification of 2x. The conjuguates can of course be adjusted to vary the magnification.
40 DN 16 Negative Achromatic Doublets
Specifications |
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|---|---|
| Mounting: | Unmounted |
| Optimal Wavelength Range: | 400-800nm |
| Diameter: | 16 mm |
| Focal Length: | 40 mm |
| Achromat Type: | Doublet |
Applications
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Frequently Asked Questions
A negative achromatic doublet is a lens made up of two elements that corrects for spherical aberration, coma, and chromatic aberration.
The diameter of the 40 DN 16 negative achromatic doublet is 16mm with a tolerance of +0 -0.1mm.
The focal length of the 40 DN 16 negative achromatic doublet is 40mm with a tolerance of ±1% at 587nm.
The 40 DN 16 negative achromatic doublet is suitable for metrology, vision, OEM, and laser optics applications.
Yes, the 40 DN 16 negative achromatic doublet gives essentially diffraction-limited performance on axis.