Surface Quality: 40-20
Diameter Tolerance (mm): +0,00/-0,025
Center Thickness Tolerance (mm): ±0,3
Edge Thickness Tolerance: Reference
Centering (arcmin): < 3
Bevel: Protective as needed
Focal Length Tolerance: ±1% (Steinheil), ±2% (Hastings)
Coating: l/4 MgF2 @ 550 nm
B A B
Triplet Achromats
CT1+CT2
ET
P P"
Large Precision Achromatic Lenses
BFL
EFL
R
Dia.
1
2 R R3
R4
Units: mm
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Steinheil Triplet Achromats
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. Decreased
diameters allow lens mounting in a smaller
space than traditional Steinheil designs permit.
Hastings Triplet Achromats
Hastings Triplets are the most popular high-power
magnifiers
available today, because their unique threeelement
design
provides
the ultimate in distortion
free,
color
correct
viewing.
The lenses in this series are
computer-designed
to interact
with each other, contributing
to the reduction
or elimination
of “pincushion”
distortion and chromatic
and spherical
aberrations.
Edge
Thickness
Diameter
Center
Thickness
R
R
B A B
R
R
1
2
3
4
R
R
R
R
Dia.
Edge Thickness
Center Thickness
1
2
3
4
TECHSPEC® Steinheil Triplet Achromatic Lenses
Dia.
EFL
BFL
Total Center
Edge
(mm)
(mm)
(mm)
Thickness (mm)
Thickness (mm)
Radius (mm) Glass Type Center Thickness (mm) Stock
No.
Price – MgF2 Coated
R1 R2 R3 R4 A B A B 1-5 6-25 26+
6,25 12,5 8,94 9,00 7,70 7,81 4,09 -4,09 -7,81 N-BK7 N-BaSF64 5,00 2,00 #47-673 €101,50 €81,00
Call
9,00 18,0 12,85 12,96 11,08 11,25 5,89 -5,89 -11,25 N-BK7 N-BaSF64 7,20 2,88 #47-674 €101,50 €81,00
12,50 25,0 17,82 18,00 15,39 15,65 8,22 -8,22 -15,65 N-BK7 N-BaSF64 10,00 4,00 #47-675 €112,00 €89,50
25,00 50,0 40,60 25,80 20,58 31,25 18,47 -18,47 -31,25 N-BK7 N-LaSF45 13,00 6,40 #67-422 €121,00 €97,00
TECHSPEC® Hastings Triplet Achromatic Lenses
Dia.
EFL
BFL
Total Center
Edge
(mm)
(mm)
(mm)
Thickness (mm)
Thickness (mm)
Radius (mm) Glass Type Center Thickness (mm) Stock
No.
Price – MgF2 Coated
R1 R2 R3 R4 A B A B 1-5 6-25 26+
8,00 12,5 9,82 7,23 5,44 9,40 4,81 -4,81 -9,40 N-BK7 N-F2 5,23 1,00 #13-521 €101,00 €81,00
Call
10,00 15,0 11,21 10,00 7,67 11,33 6,17 -6,17 11,33 N-BK7 N-F2 8,00 1,00 #67-418 €102,50 €82,00
12,50 20,0 16,31 10,18 7,44 14,95 7,34 -7,34 -14,95 N-BK7 N-F2 7,98 1,10 #45-251 €113,00 €90,50
15,00 25,4 20,00 12,49 9,41 19,00 9,30 -9,30 -19,00 N-BK7 N-F2 10,21 1,14 #30-120 €113,00 €90,50
23,00 40,3 33,90 18,00 13,79 32,48 18,15 -18,15 -32,48 N-BK7 N-F2 11,00 3,50 #30-229 €123,00 €98,50
Substrate: N-BK7/N-SF2
Coating: l/4 MgF2 @ 550 nm
Focal Length Tolerance (%): ±1
Design Wavelength (nm): 587,6
Bevel: Protective as needed
Surface Quality: 60-40
Edge Thickness Tolerance: Reference
Centering Tolerance (arcmin): 5
• AR Coated for Optimum Performance
• Unmounted and Mounted Configurations
• Cemented and Air-Spaced Designs
Our high quality TECHSPEC® Large Precision Achromatic
Lenses are color-corrected and free of spherical
aberrations to less than a l/4 wavefront error. To
ensure quality, each surface is individually inspected
with a Zygo® interferometer during manufacturing.
Spacer material is provided with unmounted airspaced
achromats.
Specifications
Diameter
(mm)
EFL
(mm)
Diameter
Tolerance (mm)
Center Thickness
Tolerance (mm)
Mount Diameter
(mm)
Mount Thickness
(mm)
63,50 354,87 +0,0/-0,10 ±0,20 N/A N/A
63,50 486,30 +0,0/-0,08 ±0,38 N/A N/A
76,50 849,96 +0,0/-0,08 ±0,86 90,00 28,07
102,31 1524,73 +0,0/-0,12 ±0,86 116,00 28,35
128,02 1900,24 +0,0/-0,12 ±0,86 140,00 33,07
TECHSPEC® Large Precision Achromatic Lenses
Dia.
EFL
BFL
CA
CTCT1
2
(mm)
(mm)
(mm)
(mm)
(mm)
(mm)
ET
(mm)
R1
(mm)
R2
(mm)
R3
(mm)
R4
(mm)
Construction
Unmounted Mounted
Stock No. Price Stock No. Price
63,50 354,87 344,52 62,70 11,94 8,86 17,43 203,94 -156,41 -156,41 -569,60 Cemented #31-402 €300,00 – –
63,50 486,30 476,42 60,00 11,43 10,16 19,11 290,86 -197,87 -197,87 -680,72 Cemented #42-817 €300,00 – –
76,56 849,96 838,69 73,25 13,08 10,16 21,18 497,21 -345,82 -344,20 -1227,86 0,10 mm Air-Space #30-976 €458,00 #54-567 €555,00
102,31 1524,73 1514,53 98,75 12,37 8,76 19,19 908,13 -626,59 -625,40 -2169,77 0,10 mm Air-Space #50-107 €1.083,00 #54-568 €1.200,00
128,02 1900,24 1887,58 124,50 15,42 10,92 23,78 1131,72 -780,87 -779,37 -2704,01 0,10 mm Air-Space #70-163 €1.133,00 #54-569 €1.230,00
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