TECHSPEC® Steinheil Triplet Achromatic Lenses

Specifically designed for 1:1 conjugate ratios, Steinheil triplets are ideal for use in relay systems. Utilizing symmetry to correct for aberrations, Steinheils are made from a low index center element cemented between two identical high index outer elements. In addition, each lens is edged down to f-numbers with reasonable aberration correction at increased fields. Decreased diameters allow lens mounting in a smaller space than traditional Steinheil designs permit. BaSF1; nd = 1.626. AR Coated, 1/4 wave MgF2 at 550nm. All dimensions are in mm.

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Description Stock No. Price In Stock  
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6.25mm Dia X 12.5mm EFL Steinheil Triplet Achromat Lens
NT47-673 $79.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (mm) 6.25
Diameter Tolerance (mm) +0.0/-0.1
Effective Focal Length EFL (mm) 12.50
Back Focal Length BFL (mm) 8.94
Focal Length Tolerance (%) 1
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
Center Thickness CT (mm) 9.00
Center Thickness A (mm) 5.00
Center Thickness B (mm) 2.00
Center Thickness Tolerance (mm) ±0.3
Centering (arcminutes) 3
Surface Quality 40-20
Bevel 0.25mm x 45°
Substrate A N-BK7
Substrate B N-BASF64
Coating AR Coated 1/4wave MgF2
RoHS Compliant
9mm Dia x 18mm EFL Steinheil Triplet Achromat Lens
NT45-399 $65.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (mm) 9.00
Diameter Tolerance (mm) +0.0/-0.1
Effective Focal Length EFL (mm) 18.00
Back Focal Length BFL (mm) 12.93
Focal Length Tolerance (%) 1
Radius R1 (mm) 12.45
Radius R2 (mm) 5.89
Radius R3 (mm) -5.89
Radius R4 (mm) -12.45
Edge Thickness ET (mm) 11.28
Center Thickness CT (mm) 12.96
Center Thickness A (mm) 7.20
Center Thickness B (mm) 2.88
Center Thickness Tolerance (mm) ±0.3
Centering (arcminutes) 3
Surface Quality 40-20
Bevel 0.25mm x 45°
Substrate A N-BK7
Substrate B BASF1
Coating AR Coated 1/4wave MgF2
RoHS Exempt
12.5mm X 25mm EFL Steinheil Triplet Achromat Lens
NT47-675 $65.00Click for special volume pricing Click to receive an email with delivery information. Click to add this item to your cart.
Diameter (mm) 12.50
Diameter Tolerance (mm) +0.0/-0.1
Effective Focal Length EFL (mm) 25.00
Back Focal Length BFL (mm) 17.82
Focal Length Tolerance (%) 1
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
Center Thickness CT (mm) 18.00
Center Thickness A (mm) 10.00
Center Thickness B (mm) 4.00
Center Thickness Tolerance (mm) ±0.3
Centering (arcminutes) 3
Surface Quality 40-20
Bevel 0.25mm x 45°
Substrate A N-BK7
Substrate B N-BASF64
Coating AR Coated 1/4wave MgF2
RoHS Compliant
25mm x 50mm EFL Steinheil Triplet Achromat Lens
NT67-422 $79.00Click for special volume pricing In stock and ready to ship. Click to add this item to your cart.
Diameter (mm) 25.00
Diameter Tolerance (mm) +0.0/-0.1
Effective Focal Length EFL (mm) 50.00
Back Focal Length BFL (mm) 40.60
Focal Length Tolerance (%) ±1
Radius R1 (mm) 31.25
Radius R2 (mm) 18.47
Radius R3 (mm) -18.47
Radius R4 (mm) -31.25
Edge Thickness ET (mm) 20.58
Center Thickness CT (mm) 25.80
Center Thickness A (mm) 13.00
Center Thickness B (mm) 6.40
Center Thickness Tolerance (mm) ±0.3
Centering (arcminutes) 3
Surface Quality 40-20
Bevel 0.25mm x 45°
Substrate A N-BK7
Substrate B N-LaSF45
Coating AR Coated 1/4wave MgF2
RoHS Compliant

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