Product Details

Type:

Achromatic Lens

Physical & Mechanical Properties

Diameter (mm):

20.00 +0.0/-0.025

Clear Aperture CA (mm):

19.00

Centering (arcmin):

<1

Center Thickness CT (mm):

9.09 ±0.20

Center Thickness CT 1 (mm):

7.33 ±0.10

Center Thickness CT 2 (mm):

1.76 ±0.10

Edge Thickness ET (mm):

6.57

Bevel:

Protective bevel as needed

Optical Properties

Effective Focal Length EFL (mm):

35.00

Focal Length Tolerance (%):

±1

Back Focal Length BFL (mm):

29.90

Focal Length Specification Wavelength (nm):

587.6

Radius R₁ (mm):

24.24

Radius R₂ (mm):

-15.96

Radius R₃ (mm):

-139.78

S-BAH11 / N-SF10

Surface Quality:

40-20

f/#:

1.75

Numerical Aperture NA:

0.29

Coating:

MgF₂ (400-700nm)

Coating Specification:

R_avg ≤1.75% @ 400 - 700nm

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Wavelength Range (nm):

400 - 700

20mm Dia. x 35mm FL, MgF₂ Coated, Achromatic Doublet Lens

Product Details

Physical & Mechanical Properties

Optical Properties

Regulatory Compliance

產品系列說明

20mm Dia. x 35mm FL, MgF2 Coated, Achromatic Doublet Lens

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Product Details

Physical & Mechanical Properties

Optical Properties

Regulatory Compliance

產品系列說明

20mm Dia. x 35mm FL, MgF₂ Coated, Achromatic Doublet Lens