E-62-488 12.5mm Dia x -50mm FL VIS 0° Coated, Negative Achromatic Lens

Fosco Connect Part No.: E-62488

$ 146.00 or

E-62488 12.5mm Dia x -50mm FL VIS 0° Coated, Negative Achromatic Lens

Product VIS 0 Coating Curve

Product ISO

Product Drawing

Diameter (mm): 12.50 +0.0/-0.025

Effective Focal Length EFL (mm): -50.00

Focal Length Tolerance (%): ±1

Back Focal Length BFL (mm): -51.58

Focal Length Specification Wavelength (nm): 587.6

Clear Aperture CA (mm): 11.50

Centering (arcmin): <1

Center Thickness CT 1 (mm): 2.00

Center Thickness CT 2 (mm): 1.56

Center Thickness Tolerance (mm): ±0.2

Radius R₁ (mm): -30.83

Radius R₂ (mm): 23.47

Radius R₃ (mm): 69.20

Edge Thickness ET (mm): 4.40

N-BK7 / N-SF5

Surface Quality: 40-20

f/#: 4.00

Numerical Aperture NA: 0.13

Coating: VIS 0° (425-675nm)

Coating Specification: R_avg ≤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.