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40mm Dia. x 200mm FL, YAG-BBAR Coated, Achromatic Lens

YAG-BBAR Coated Achromatic Lenses

YAG-BBAR Coated Achromatic Lenses Any of our lenses with a diameter of 5mm or greater can be specified with blackened edges. To specify the blackening, simply append a –INK to the BBAR coated stock number.
Stock #11-733 3-4 days
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Diameter (mm):
40.00 +0.000/-0.025
Effective Focal Length EFL (mm):
Focal Length Tolerance (%):
Back Focal Length BFL (mm):
Focal Length Specification Wavelength (nm):
Clear Aperture CA (mm):
Centering (arcmin):
Center Thickness CT (mm):
12.50 ±0.20
Center Thickness CT 1 (mm):
8.50 ±0.10
Center Thickness CT 2 (mm):
4.00 ±0.10
Radius R1 (mm):
Radius R2 (mm):
Radius R3 (mm):
Edge Thickness ET (mm):
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
Numerical Aperture NA:
YAG-BBAR (500-1100nm)
Coating Specification:
Rabs <0.25% @ 532nm
Rabs <0.25% @ 1064nm
Ravg <1.0% @ 500 - 1100nm
Power (P-V) @ 632.8nm:
Irregularity (P-V) @ 632.8nm:
Protective bevel as needed
Achromatic Lens
Wavelength Range (nm):
500 - 1100

Regulatory Compliance

RoHS 2015:
Reach 219:
Certificate of Conformance:

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.

Laser Optics