Diameter (mm):

75.00 +0.0/-0.025

Effective Focal Length EFL (mm):

200.00

Focal Length Tolerance (%):

±1

Back Focal Length BFL (mm):

187.69

Focal Length Specification Wavelength (nm):

587.6

Clear Aperture CA (mm):

73.50

Centering (arcmin):

<1

Center Thickness CT (mm):

23.94 ±0.20

Center Thickness CT 1 (mm):

17.94 ±0.10

Center Thickness CT 2 (mm):

6.00 ±0.10

Radius R₁ (mm):

118.81

Radius R₂ (mm):

-96.37

Radius R₃ (mm):

-288.97

Edge Thickness ET (mm):

15.42

N-BK7 / N-SF5

Surface Quality:

40-20

f/#:

2.67

Numerical Aperture NA:

0.19

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:

Achromatic Lens

Wavelength Range (nm):

400 - 700

75mm Dia. x 200mm FL, MgF₂ Coated, Achromatic Doublet Lens

Regulatory Compliance

產品系列說明

75mm Dia. x 200mm FL, MgF2 Coated, Achromatic Doublet Lens

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Regulatory Compliance

產品系列說明

75mm Dia. x 200mm FL, MgF₂ Coated, Achromatic Doublet Lens