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E-62-481 9mm Dia x -12mm FL VIS 0° Coated, Negative Achromatic Lens

Fosco Connect Part No.: E-62481

  • $ 53.00 or



E-62481 9mm Dia x -12mm FL VIS 0° Coated, Negative Achromatic Lens

Product VIS 0 Coating Curve

Product ISO

Product Drawing

Diameter (mm): 9.00 +0.0/-0.025
Effective Focal Length EFL (mm): -12.00
Focal Length Tolerance (%): ±1
Back Focal Length BFL (mm): -13.78
Focal Length Specification Wavelength (nm): 587.6
Clear Aperture CA (mm): 8.1
Centering (arcmin): <1
Center Thickness CT 1 (mm): 1.50
Center Thickness CT 2 (mm): 2.50
Center Thickness Tolerance (mm): ±0.2
Radius R1 (mm): -6.98
Radius R2 (mm): 6.98
Radius R3 (mm): 23.22
Edge Thickness ET (mm): 5.79
Substrate: 
N-BK7 / N-SF5
Surface Quality: 40-20
f/#: 1.33
Numerical Aperture NA: 0.38
Coating: VIS 0° (425-675nm)
Coating Specification: Ravg ≤0.4% @ 425 - 675nm
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): 425 - 675

Product Family Description

  • VIS 0° and VIS-NIR Coatings
  • 6.25 – 25mm Diameter Options

TECHSPEC® Broadband AR Coated Negative Achromatic Lenses are corrected for color and on-axis aberrations. These lenses, consisting of two optical elements cemented together, are commonly used as Barlow lenses to extend focal lengths. TECHSPEC® Broadband AR Coated Negative Achromatic Lenses are available in various diameter sizes and VIS 0° or VIS-NIR coating options.

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