Bestform Laser Lenses, S1-UV Grade Fused Silica


Focal Length Tolerance

+/- 3%

Diameter Tolerance

+/- 0.15 mm

Thickness Tolerance

+/- 0.2 mm



Surface Quality

20-10, scratch-dig

Surface Accuracy

1/10 wave or better


Fine ground and beveled


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Bestform Laser Lenses, S1-UV Grade Fused Silica

Esco PN:
  • $ 19910

When focusing a laser beam to a minimum spot, the shape of a single element lens that most effectively reduces spherical aberration is called bestform. The front and back radii of these optical lenses are chosen to be of a specific ratio; determined by the proper shape factor, which is governed by the lens material.

At Esco, we manufacture Bestform lenses from the highest quality optical grade materials. Only materials with superior homogeneity specifications are used in laser applications. Our pitch polishing department provides optic lenses with excellent surface quality, a characteristic that is necessary for limiting scatter and bringing our customers optimal results.

Bestform Laser Quality Lenses are made from S1-UV Grade Fused Silica.

For custom design lenses, please contact our sales staff and we will be glad to help you.


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ITAR registered and compliant, Esco manufactures ITAR optics for all of its customers with the strictest confidentiality.