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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More
9mm Dia x 18mm EFL Steinheil Triplet Achromatic Lens

Stock #47-674
£84.58
×
Qty 1-5
£84.58
Qty 6
£67.66
Volume Pricing
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Diameter (mm):
9.00 +0.0/-0.025
Effective Focal Length EFL (mm):
18.00
Focal Length Tolerance (%):
1.00
Back Focal Length BFL (mm):
12.85
Focal Length Specification Wavelength (nm):
587.6
Centering (arcmin):
<3
Center Thickness CT (mm):
12.96
Center Thickness A (mm):
7.2
Center Thickness B (mm):
2.88
Center Thickness Tolerance (mm):
±0.3
Radius R1 (mm):
11.25
Radius R2 (mm):
5.89
Radius R3 (mm):
-5.89
Radius R4 (mm):
-11.25
Edge Thickness ET (mm):
11.08
Substrate:
Surface Quality:
40-20
f/#:
2.00
Numerical Aperture NA:
0.25
Coating:
MgF2 (400-700nm)
Coating Specification:
Ravg ≤1.75% @ 400 - 700nm
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Bevel:
Protective bevel as needed
Type:
Achromatic Triplet Lens
Wavelength Range (nm):
400 - 700

Regulatory Compliance

RoHS 2015:
Reach 197:

Product Family Description

TECHSPEC® Steinheil Triplet Achromatic Lenses are designed for 1:1 conjugate ratios and utilize symmetry to correct for aberrations. Steinheils are made from a low index center element cemented between two identical high index outer elements. Each lens is edged down to f-numbers with reasonable aberration correction at increased fields. TECHSPEC® Steinheil Triplet Achromatic Lenses feature small diameters that allow for mounting in smaller spaces compared to traditional Steinheil lens designs. Steinheil Triplets are ideal for use in relay systems.

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