Reasonable Achromatic Lens 25mm Diameter 69.9mm Focal Length

S-DLB-25-70PM

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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.

Details

◦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

More Information
Name	Reasonable Achromatic Lens 25mm Diameter 69.9mm Focal Length
Weight	0.0120kgs
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.
Diameter φD	25mm
Focal length	69.9mm
Image Label	Reasonable Achromatic Lens 25mm Diameter 69.9mm Focal Length
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	φ25mm
Focal length f	69.9mm
Edge Thickness te	6.3mm
Center Thickness tc	9mm
Back focal length fb	65.3mm

In stock

SKU

S-DLB-25-70PM

$61.00

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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Reasonable Achromatic Lens 25mm Diameter 69.9mm Focal Length

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