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All Products / Optics / Optical Lenses / Double-Convex (DCX) Lenses / Best Form Spherical Lenses
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25mm Dia. x 75mm FL, Uncoated, Best Form Spherical Lens

Best Form Spherical Lenses

Best Form Spherical Lenses

Best Form Spherical 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 #22-571 In Stock
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Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
C$278.60
Qty 1-9
C$278.60
Qty 10+
C$250.74
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Diameter (mm):
25.00 +0/-0.025
Back Focal Length BFL (mm):
72.76
Effective Focal Length EFL (mm):
75.00
Coating:
Uncoated
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica
Surface Quality:
10-5
Power (P-V) @ 632.8nm:
1.5λ
Irregularity (P-V) @ 632.8nm:
λ/4
Centering (arcmin):
<1
Bevel:
Protective bevel as needed
Center Thickness CT (mm):
4.00 ±0.05
Edge Thickness ET (mm):
1.67
Radius R1 (mm):
185.00
Radius R2 (mm):
41.95
Clear Aperture CA (mm):
22.50
f/#:
3
Focal Length Specification Wavelength (nm):
587.6
Numerical Aperture NA:
0.17
Type:
Double-Convex Lens
Wavelength Range (nm):
200 - 2200
Conjugate Distance:
Infinite

Regulatory Compliance

RoHS:
Compliant
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Certificate of Conformance:
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Product Family Description

  • Asymmetrical Design for Precise Focusing and Small Spot Size
  • Uncoated Fused Silica Substrate with 10-5 Surface Quality
  • Ideal for Higher Power Laser Applications

Best Form Spherical Lenses are double-convex (DCX) lenses designed with asymmetrical faces to achieve the smallest possible spot size with spherical surfaces. Featuring 10-5 surface quality and utilizing UV Fused Silica substrates, these lenses are an alternative to laser grade aspheric lenses. With common diameters and various focal lengths available, these lenses can easily be integrated into optical systems requiring precise focusing. Best Form Spherical Lenses are optimized to reduce spherical aberration and far exceed performance of plano-convex (PCX) lenses without the cost associated with aspheric lens designs. These lenses are ideal for precise laser applications where the large aperture diffraction limited performance of an aspheric lens is not needed.