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E-33-203 6.25mm Dia. x 25mm FL, YAG-BBAR Coated, Achromatic Lens

Fosco Connect Part No.: E-33203

  • $ 110.00 or

E-33203 6.25mm Dia. x 25mm FL, YAG-BBAR Coated, Achromatic Lens


Diameter (mm): 6.25 +0.000/-0.025
Effective Focal Length EFL (mm): 25.00
Focal Length Tolerance (%): ±1
Back Focal Length BFL (mm): 23.45
Focal Length Specification Wavelength (nm): 587.6
Clear Aperture CA (mm): 5.25
Centering (arcmin): <1
Center Thickness CT 1 (mm): 2.3
Center Thickness CT 2 (mm): 0.9
Center Thickness Tolerance (mm): ±0.2
Radius R1 (mm): 15.37
Radius R2 (mm): 11.16
Radius R3 (mm): 32.17
Edge Thickness ET (mm): 2.73
N-BK7 / N-SF5
Surface Quality: 40-20
f/#: 4.00
Numerical Aperture NA: 0.12
Coating: YAG-BBAR (500-1100nm)

Coating Specification:
Rabs <0.25% @ 532nm
Rabs <0.25% @ 1064nm
Ravg <1.0% @ 500 - 1100nm

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): 500 - 1100

Product Family Description

  • Optimized for <0.25% Absolute Reflectivity at 532nm and 1064nm
  • Excellent Broadband Transmission from 500 - 1100nm
  • Low Cost Alternative to Air-Spaced Focusing Doublets

TECHSPEC® YAG-BBAR Coated Achromatic Lenses consist of two optical components cemented together to form a doublet that is ideal for correcting on-axis spherical and chromatic aberrations. These achromats feature a broadband anti-reflective coating with superior transmission from 500 - 1100nm, and are optimized for less than 0.25% absolute reflectivity at 532 and 1064nm. Our TECHSPEC YAG-BBAR Coated Achromatic Lenses are specifically designed to minimize the spot size for polychromatic illumination within the recommended usable wavelength range, but may also be used for focusing Nd:YAG lasers, especially those with an alignment beam.



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