JML spherical/flat glass

For over 40 years JML optical has been supplying spherical and plano glass into highly engineered customer systems.  Our extensive experience includes designing them into highly valued assemblies used in many demanding applications. With over 30 conventional spindles, several large dedicated plano polishers, and CNC spherical grinders and polishers, we can handle large orders of this glass fabrication in house. If you need them fast, then our QuickTurn Optics services can be the answer for these, aspheres, cylinders, and full assemblies.

Spherical Optics

  • Sizes: 4mm-500mm
  • Material Types: all the optical glass, fused silica, and Zerodur™
Parameter Industry Precision Tolerance JML Precision
Index of Refraction (%) +/-0.0005 Melt Controlled
Diameter (mm) +0.00/0.025 +/-0.013
Center Thickness (mm) +/- 0.05 +/-0.025
Power-Irregularity (fringes) 3-1/2 2-1/5
Centration (Total Included Angle in ARC minutes) 1 0.5
Scratch-Dig 40-20 10-5

Plano and Flat Optics

  • Sizes: 4mm-500mm
  • Material: Material Types: all the optical glass, fused silica, and Zerodur™
Parameter Industry Precision Tolerance JML Precision
Index of Refraction (%) +/-0.0005 Melt Controlled
Diameter (mm) +0.00/-0.025 rounds
+/-0.10 squares		 +0.00/-0-.013
Thickness (mm) +/-0.05 +/-0.025
Flatness (waves) 1/10 1/20
Scratch-Dig 40-20 10-5
Parallelism (Arc Minutes) 0.5 0.05
Angular (Arc Minutes) 1 0.025