TECHSPEC® Precision Aspherized Achromatic Lenses
Dia. (mm) EFL (mm) BFL (mm) CT1 (mm) CT2 (mm) ET (mm) Glass Type Stock No.
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Encircled Energy Comparison
Diffraction Limit
25x25mm Precision Aspherized
Achromat (#85-302)
25x30mm Aspherized Achromat
(#49-662)
50 +44 (0) 1904 788600 | Edmund Optics® N NEW PRODUCT NEW LOW PRICE
testing & detection targets illumination cameras imaging lenses microscopy lasers optomechanics optics
Clear Aperture (%): 90
Diameter Tolerance (mm): +0,0/-0,1
Center Thickness Tolerance (mm): ±0,2
Surface Quality: 20-10
Centering (arcmin): ≤ 3
Design Wavelength (nm): 587,6
Coating: λ/4 MgF2 @ 550 nm
• All Glass Color-Corrected Asphere
• Low f/# Designs
• Ideal for Imaging and Biotech Applications
Featuring an all glass design, TECHSPEC® Precision
Aspherized Achromatic Lenses are truly achromatic,
with less than 10 μm of chromatic focal shift. These
achromatic lenses are nearly diffraction limited over
the full visible spectrum, and have high numerical apertures
for increased light throughput and small spot
sizes. TECHSPEC® Precision Aspherized Achromatic
Lenses are ideal for fluorescence microscopy, low signal
to-noise imaging applications, and multiple laser
biotech applications.
Aspherized Surface
P P"
BFL
EFL
R
Dia.
CT1+CT2
ET
1
2
3
R
R
Aspherized Surface
0
0 2 4 6 8 10 12 14 16 18 20
Fraction of Enclosed Energy
Radius from Centroid (μm)
Chromatic Focal Shift Comparison
646
Wavelength (nm)
-0.15 -0.10 -0.05 0.00 0.05 0.10 0.15
Focal Shift (mm)
626
606
586
566
546
526
506
486
25x25mm Precision Aspherized
Achromat (#85-302)
25x30mm Aspherized
Achromat (#49-662)
25x25mm Standard Achromat
(#65-553)
Price
1-5 6-25 26+
25,0 20,0 8,56 15,0 8,2 11,75 N-PK51/S-NPH2 #85-301 €995,00 €895,50
Call
25,0 25,0 16,40 17,0 8,0 16,92 N-PK51/S-NPH2 #85-302 €995,00 €895,50
Surface Quality: 40-20
Diameter Tolerance (mm): +0,0/-0,1
Center Thickness Tolerance (mm): ±0,1
Centering (arcmin): ≤ 5
Focal Length Tolerance (%): ±1
Clear Aperture (mm): 23
Coating: Rabs < 0,25% @ DWL
Bevel: Protective as needed
• Modified TECHSPEC® PCX Lenses
• Optimized Performance at Designated
Wavelengths
• Diffraction-Limited Spot Size
TECHSPEC® Best Form Aspheric Lenses are
TECHSPEC® PCX Lenses that have been modified
to provide superior performance at specified wavelengths.
Unlike the preexisting TECHSPEC® PCX
lens, TECHSPEC® Best Form Aspheric Lenses produce
diffraction-limited spot sizes at the design wavelength,
which is ideal for focusing or collimating applications.
Any diameter and focal length TECHSPEC®
PCX Lens can be modified to become a TECHSPEC®
Best Form Aspheric Lens in order to provide the best
solution for any application. Note: Unlike traditional
focusing lenses, these lenses should be used with the
plano side facing the light source.
TECHSPEC® Best Form Aspheric Lenses
Diameter
(mm)
Effective
FL
(mm)
Max. Center
Thickness
(mm)
Max. Edge
Thickness
(mm)
Glass
Type
532 nm 1064 nm Price – Coated
Stock No. Stock No. 1-5 6-25 26+
25,0 25,0 6,61 1,77 N-BK7 #89-431 #89-439 €185,00 €165,00
Call For OEM Quantity Pricing
25,0 50,0 4,30 1,49 N-BK7 #89-432 #89-440 €185,00 €165,00
25,0 75,0 4,25 2,31 N-BK7 #89-433 #89-441 €185,00 €165,00
25,0 100,0 4,05 2,57 N-BK7 #89-434 #89-442 €185,00 €165,00
CT
ET
BFL
EFL
P"
Dia.
Aspheric Surface
Precision Aspherized Achromatic Lenses
Best Form Aspheric Lenses
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