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All Products / Optics / Optical Lenses / Achromatic Lenses / VIS-NIR Coated Achromatic Lenses
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

6.25mm Dia. x 40mm FL, VIS-NIR Coated, Achromatic Lens

Any of our lenses with a diameter of 5mm or greater can be specified with blackened edges. To specify the blackening, simply append a –INK to the BBAR coated stock number.
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Stock #49-310 In Stock
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Other Coating Options
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Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
€73,50
Qty 1-5
€73,50
Qty 6+
€59,00
Volume Pricing
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Prices shown are exclusive of VAT/local taxes
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Specifications

General

Type:
Achromatic Lens

Physical & Mechanical Properties

Diameter (mm):
6.25 +0.0/-0.025
Clear Aperture CA (mm):
5.625
Centering (arcmin):
<1
Center Thickness CT (mm):
3.30 ±0.10
Center Thickness CT 1 (mm):
2.30 ±0.05
Center Thickness CT 2 (mm):
1.00 ±0.05
Edge Thickness ET (mm):
3.01
Bevel:
Protective bevel as needed

Optical Properties

Effective Focal Length EFL (mm):
40.00
Focal Length Tolerance (%):
±1
Back Focal Length BFL (mm):
38.46
Focal Length Specification Wavelength (nm):
587.6
Radius R1 (mm):
25.05
Radius R2 (mm):
-17.27
Radius R3 (mm):
-49.33
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7 / N-SF5
Surface Quality:
40-20
f/#:
6.4
Numerical Aperture NA:
0.08
Coating:
VIS-NIR (400-1000nm)
Coating Specification:
Rabs ≤0.25% @ 880nm
Ravg ≤1.25% @ 400 - 870nm
Ravg ≤1.25% @ 890 - 1000nm
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Wavelength Range (nm):
400 - 1000

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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REACH 241:
Compliant
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Product Details

  • Designed for 0° Angle of Incidence
  • Less Than 0.25% Reflectance Per Surface @ 880nm
  • MgF2 and VIS 0° Coated Achromats Also Available

TECHSPEC® VIS-NIR Coated Achromatic Lenses consist of two optical components cemented together to form an achromatic doublet. The doublet is computer optimized to correct for on-axis spherical and chromatic aberrations. TECHSPEC® VIS-NIR Coated Achromatic Lenses have visible/near-infrared broadband anti-reflection coating, which is specially optimized to yield maximum transmission (>99%) in the near-infrared. The achromatic lenses reduce reflection to less than 0.25 percent per surface at 880nm. Magnesium Fluoride coated and VIS 0° coated achromats are also available.

Technical Information

Coating Curves

  • VIS-NIR (400-1000nm)
Only 2 different Y Axises can be displayed at one time.

Please note that coating performance outside each product’s specified design range is theoretical and may vary.

Related Products

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Compatible Mounts

Title  Type Compare Stock Number   Price  Buy
6.25mm Diameter, S-Mount Thick Optic Mount Fixed #63-949 €37,00
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  • In Stock
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6.25mm Diameter, C-Mount Thick Optic Mount Fixed #54-621 €54,00
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  • 3-4 days
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