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TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm Dia. x 40mm FL, VIS-NIR, Inked, Achromatic Lens

Name: 20mm Dia. x 40mm FL, VIS-NIR, Inked, Achromatic Lens
Brand: TECHSPEC
SKU: 49-350-INK
Price: ₹9,918

Stock #49-350-INK 17 to 22 D=days Other Coating Options

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₹9,918

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₹7,939

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Specifications
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Diameter (mm):

20.00 ±0.025

Effective Focal Length EFL (mm):

40.00

Focal Length Tolerance (%):

±1

Back Focal Length BFL (mm):

34.40

Focal Length Specification Wavelength (nm):

587.6

Clear Aperture CA (mm):

19.00

Centering (arcmin):

Center Thickness CT (mm):

10.00 ±0.20

Center Thickness CT 1 (mm):

8.00 ±0.10

Center Thickness CT 2 (mm):

2.00 ±0.10

Radius R₁ (mm):

27.63

Radius R₂ (mm):

-17.58

Radius R₃ (mm):

-171.25

Edge Thickness ET (mm):

7.83

N-BAF10 / N-SF10

Surface Quality:

40-20

f/#:

2.00

Numerical Aperture NA:

0.25

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

R_abs ≤0.25% @ 880nm
R_avg ≤1.25% @ 400 - 870nm
R_avg ≤1.25% @ 890 - 1000nm

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Bevel:

Protective bevel as needed

Type:

Achromatic Lens

Wavelength Range (nm):

400 - 1000

Regulatory Compliance

RoHS 2015:

Compliant

REACH 201:

Compliant

Certificate of Conformance:

View

Product Family Description

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.