E-48-351 25mm Dia x -30mm FL Negative Doublet Lens MgF2 Coated

Fosco Connect Part No.: E-48351

E-48351 25mm Dia x -30mm FL Negative Doublet Lens MgF2 Coated

Diameter (mm): 25.00 +0.0/-0.025

Effective Focal Length EFL (mm): -30.00

Focal Length Tolerance (%): ±1

Back Focal Length BFL (mm): -36.15

Focal Length Specification Wavelength (nm): 587.6

Clear Aperture CA (mm): 24.00

Centering (arcmin): <1

Center Thickness CT 1 (mm): 4.00

Center Thickness CT 2 (mm): 8.00

Center Thickness Tolerance (mm): ±0.2

Radius R₁ (mm): -21.24

Radius R₂ (mm): 17.26

Radius R₃ (mm): 162.24

Edge Thickness ET (mm): 16.31

N-BAF10 / N-SF10

Surface Quality: 40-20

f/#: 1.2

Numerical Aperture NA: 0.42

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

Bevel: Protective bevel as needed

Type: Negative Achromatic Lens

Wavelength Range (nm): 400 - 700