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All Products / Optics / Optical Lenses / Achromatic Lenses / YAG-BBAR Coated Achromatic Lenses
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm Dia. x 40mm 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.
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Stock #11-357 In Stock
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Other Coating Options
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C$140.00
Qty 1-5
C$140.00
Qty 6+
C$112.00
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Diameter (mm):
20.00 +0.000/-0.025
Effective Focal Length EFL (mm):
40.00
Focal Length Tolerance (%):
±1
Back Focal Length BFL (mm):
34.40
Focal Length Specification Wavelength (nm):
587.6
Clear Aperture CA (mm):
19.00
Centering (arcmin):
<1
Center Thickness CT (mm):
10.00 ±0.20
Center Thickness CT 1 (mm):
8.00 ±0.10
Center Thickness CT 2 (mm):
2.00 ±0.10
Radius R1 (mm):
27.63
Radius R2 (mm):
17.58
Radius R3 (mm):
171.25
Edge Thickness ET (mm):
7.83
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BAF10 / N-SF10
Surface Quality:
40-20
f/#:
2.00
Numerical Aperture NA:
0.25
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

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 219:
Compliant
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Certificate of Conformance:
View
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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