Reasonable Achromatic Lens 20mm Diameter 99.5mm Focal Length

S-DLB-20-100PM

An economic general use achromatic lens suitable for an optical system, which does not require high surface quality imaging such as a microscope lens or telescope lens.
◦Specification except surface quality is almost the same as DLB series. Except when used in high-precision experiment using a laser, this lens is recommended.
◦It is optimized so that focal length gap is small in the visible light range and the aberration is minimized.
More Information
Name Reasonable Achromatic Lens 20mm Diameter 99.5mm Focal Length
Weight 0.0050kgs
Standard Coatings Available No
Guide -
Remark -
Attention
  • Achromatic lens is used when focusing an image at infinity or when making the point light source to collimated light. It does not provide sufficient optical performance when used in such as short-range imaging.
  • There is a direction of the incident parallel light with achromatic lens. The radius of curvature is allowed to be incident parallel light from the side of (the surface indicated by arrows) small curvature surface. If the parallel light incidents from the opposite side, then spherical aberration and chromatic aberration occur and the focused spot size will be large.
Image Label Reasonable Achromatic Lens 20mm Diameter 99.5mm Focal Length
Diameter φD 20mm
Focal length −99.5mm
Material BK7, SF2
Design wavelength Blue: 486.1nm, Green: 546.1nm, Red: 656.3nm
Centration <3′
Coating Antireflection Coating for the Visible
Cement Ultraviolet Hardened Adhesive
Surface Quality (Scratch-Dig) 60-40
Clear aperture 90% of the diameter
Diameter φD φ20mm
Focal length f 99.5mm
Edge Thickness te 4.9mm
Center Thickness tc 6.1mm
Back focal length fb 96.4mm
In stock
SKU
S-DLB-20-100PM
$42.00

Delivery in : 6-12 weeks

An economic general use achromatic lens suitable for an optical system, which does not require high surface quality imaging such as a microscope lens or telescope lens.

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