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18mm Dia. x 27mm FL, VIS 0° Coated, Achromatic Lens

Name: 18mm Dia. x 27mm FL, VIS 0° Coated, Achromatic Lens
Brand: TECHSPEC
SKU: 47-704
Price: ₹8,526

Stock #47-704 10 to 12 days Other Coating Options

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₹8,526

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₹6,830

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Diameter (mm):

18.00 +0.0/-0.025

Effective Focal Length EFL (mm):

27.00

Focal Length Tolerance (%):

±1

Back Focal Length BFL (mm):

21.74

Focal Length Specification Wavelength (nm):

587.6

Clear Aperture CA (mm):

17.00

Centering (arcmin):

Center Thickness CT (mm):

9.27 ±0.20

Center Thickness CT 1 (mm):

7.67 ±0.10

Center Thickness CT 2 (mm):

1.60 ±0.10

Radius R₁ (mm):

18.70

Radius R₂ (mm):

-13.11

Radius R₃ (mm):

-119.12

Edge Thickness ET (mm):

6.62

N-BAF10 / N-SF10

Surface Quality:

40-20

f/#:

1.5

Numerical Aperture NA:

0.33

Coating:

VIS 0° (425-675nm)

Coating Specification:

R_avg ≤0.4% @ 425 - 675nm

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):

425 - 675

Regulatory Compliance

RoHS 2015:

Compliant

Reach 219:

Compliant

Certificate of Conformance:

View

Product Family Description

Designed for 0° Angle of Incidence
Less Than 0.4% Reflectance Per Surface from 425 - 675nm
MgF₂ and VIS-NIR Coated Achromats Also Available

TECHSPEC® VIS 0° 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. Achromatic lenses are best for applications involving multi-color (white light) imaging due to their specific doublet lens pairing that enables them to correct the color separation inherent in glass. TECHSPEC® VIS 0° Coated Achromatic Lenses provide optimized transmission for 425 – 675nm, reducing average reflection to 0.4%. MgF2 and VIS-NIR Coated Achromats are also available on our website.