Diameter (mm):

20.00 ±0.025

Effective Focal Length EFL (mm):

50.00

Focal Length Tolerance (%):

±1

Back Focal Length BFL (mm):

46.93

Focal Length Specification Wavelength (nm):

587.6

Clear Aperture CA (mm):

19.00

Centering (arcmin):

<1

Center Thickness CT (mm):

6.80 ±0.20

Center Thickness CT 1 (mm):

4.80 ±0.10

Center Thickness CT 2 (mm):

2.00 ±0.10

Radius R₁ (mm):

36.92

Radius R₂ (mm):

-25.65

Radius R₃ (mm):

-77.89

Edge Thickness ET (mm):

4.78

N-SSK8 / SF56

Surface Quality:

40-20

f/#:

2.5

Numerical Aperture NA:

0.20

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

產品系列說明

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

消色差透鏡包含由兩個光學透鏡黏合而成的雙合透鏡，其經過電腦優化，非常適合用來修正正軸球面像差和色像差。Magnesium Fluoride coated and VIS 0° coated achromats also available.

20mm Dia. x 50mm FL, VIS-NIR, Inked, Achromatic Lens

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Regulatory Compliance

產品系列說明