Esco Optics, Inc.

Bestform Laser Lenses, N-BK7 Optical Glass*

Bestform Laser Lenses, N-BK7 Optical Glass* - Main image
$143.35 $199.1 In stock

Category: Best Form Lenses

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 N-BK7 Optical Glass or equivalent glass to perform at an operating wavelength of 633nm.* Indicate in order notes if N-BK7 is required.

For custom design lenses, please or online quote tool. 

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Customer Reviews (5.0 / 5 · 5 reviews)

John C. ★★★★★

I was a bit skeptical about how much difference a bestform lens would make, but the reduction in spherical aberration is immediately obvious when adjusting my alignment. The optical glass feels solid and well-made, and my beam spot is noticeably smaller and cleaner than with my old plano-convex lens

Julian W. ★★★★★

The N-BK7 glass on these is noticeably cleaner than the economy lenses I'd been using, and my beam spot tightened up right away. Spherical aberration was the bottleneck in my setup and these pretty much erased it.

Alexander ★★★★★

Bought two of these to tighten up a diode beam and the spot size dropped noticeably compared to the plain plano-convex I had before. The N-BK7 glass is clean with no visible bubbles or sleeks, and the edges came nicely ground. Collimating at 650nm it holds a tight round dot even near full aperture.