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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

12.5 x 25mm EFL Steinheil Triplet Achromatic Lens

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Stock #47-675 In Stock
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S$174.00
Qty 1-5
S$174.00
Qty 6+
S$139.20
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Diameter (mm):
12.50 +0.0/-0.025
Effective Focal Length EFL (mm):
25.00
Focal Length Tolerance (%):
±1
Back Focal Length BFL (mm):
17.82
Focal Length Specification Wavelength (nm):
587.6
Centering (arcmin):
<3
Center Thickness CT (mm):
18.00
Center Thickness A (mm):
10.00
Center Thickness B (mm):
4.00
Radius R1 (mm):
15.65
Radius R2 (mm):
8.22
Radius R3 (mm):
-8.22
Radius R4 (mm):
-15.65
Edge Thickness ET (mm):
15.39
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BASF64 / N-BK7 / N-BASF64
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:
Compliant
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Reach 219:
Compliant
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Certificate of Conformance:
View
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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.