Spherical / Plano

JML spherical/flat glass

For over 40 years JML optical has been supplying spherical and plano glass into highly engineered customer systems.  In addition, we have over 30 years of experience designing them into highly valued assemblies used in many demanding applications. We have over 30 conventional spindles, several dedicated plano polishers and CNC spherical grinders and polishers all dedicated to fabricating glass in house at our facility in Rochester and we also have the capability for Quickturn glass and systems containing not only flats and spherical work but cylinders and aspheres as well.

Spherical Optics

  • Sizes: 4mm-500mm
  • Material Types: all the optical glass, fused silica, and Zerodur™
ParameterIndustry Precision ToleranceJML Precision
Index of Refraction (%)+/-0.0005Melt Controlled
Diameter (mm)+0.00/0.025+/-0.013
Center Thickness (mm)+/- 0.05+/-0.025
Power-Irregularity (fringes)3-1/21-1/20
Centration (Total Included Angle in ARC minutes)10.5
Scratch-Dig40-2010-5

Plano and Flat Optics

  • Sizes: 4mm-500mm
  • Material: Material Types: all the optical glass, fused silica, and Zerodur™
ParameterIndustry Precision ToleranceJML Precision
Index of Refraction (%)+/-0.0005Melt Controlled
Diameter (mm)+0.00/-0.025 rounds
+/-0.10 squares
+0.00/-0-.013
Thickness (mm)+/-0.05+/-0.025
Flatness (waves)1/101/20
Scratch-Dig40-2010-5
Parallelism (Arc Minutes)0.50.05
Angular (Arc Minutes)10.025

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jml@jmloptical.com

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