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See all 4 Products in Family

TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More
6.25mm Dia x 12.5mm EFL Steinheil Triplet Achromatic Lens

Stock #47-673

$99.50

Qty 1-5
$99.50

Qty 6
$79.60

Volume Pricing
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Code V Curve eDrawings: easm IGES ISO PDF Drawing Spec sheet STEP: stp Zemax: zmx

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Diameter (mm):

6.25 +0.0/-0.025

Effective Focal Length EFL (mm):

12.50

Focal Length Tolerance (%):

1.00

Back Focal Length BFL (mm):

8.94

Focal Length Specification Wavelength (nm):

587.6

Centering (arcmin):

Center Thickness CT (mm):

9.00

Center Thickness A (mm):

5.00

Center Thickness B (mm):

2.00

Center Thickness Tolerance (mm):

±0.3

Radius R₁ (mm):

7.81

Radius R₂ (mm):

4.09

Radius R₃ (mm):

-4.09

Radius R₄ (mm):

-7.81

Edge Thickness ET (mm):

7.70

Substrate:

N-BASF64 / N-BK7 / N-BASF64

Surface Quality:

40-20

f/#:

2.00

Numerical Aperture NA:

0.25

Coating:

MgF₂ (400-700nm)

Coating Specification:

R_avg ≤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

Reach 197:

Compliant

Product Family Description

Designed for 1:1 Conjugate Ratios
Ideal for Relay Systems
Hastings Triplet Achromatic Lenses Also Available

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.