Fabrication

JTI CNC Generating Equip.CNC Generating

With the recent of new CNC generating equipment, Janos has dramatically enhanced our capacity to rapidly and accurately speed single and volume lenses through the production process. Our acquisition of the Optipro 125 and Schneider SLG 50 has given Janos the ability to machine complex geometrical features such as angular truncations, rounded corners, elliptical edge shapes, notches, steps, conical edges, angular edges and other features.

 

 

Additional Capabilities:

  • Mirror Light Weighting
  • Aspheric Generation in Same Setup
  • Spherical Generating in Same Setup
  • Complex Edge Contouring Shapes & Bevels

CNC Centering
Janos has recently purchased a new LOH CNC centering machine that can center and edge lenses of 10 to 300mm in diameter – fast, reliable and precise. The complementary tool geometry permits processing of complex lens shapes (i.e. not-rotatory symmetric contours as well as not round shapes) without tool change.

 

 

 

 

KTI Capabilities
Additional CNC Capabilities:

    • CNC Lathes
    • Nardini Fast Trace VS – 17 inch swing
    • Acra ATL-118A – 8 inch swing
    • CNC Mill

Polishing:
The SSI (Subaperture Stitching Interferometer) and MRF (Magnetorheological Finishing) stations act as a pair to characterize spherical and aspheric lens and achieve a quantum leap in repeatability of polished optics.

 

 

 

 

 

Janos Optical Fabrication Specifications

Specification Standard Typical Limits
Diameter + 0 / – 0.13mm + / – 0.05mm ± 0.005mm
Center Thickness ± 0.10mm ± 0.05mm ± 0.005mm
Clear Aperture (Minimum) 80% 85% 98%
Radius Tolerance ± 0.10% ± 0.05% ± 0.03%
Power (Polished Spherical) 4 fr @ 0.6328µm 3 fr @ 0.6328µm 1 fr @ 0.6328µm
Irregularity
(Polished)
1 fr @ 0.6328µm 0.5 fr @ 0.6328µm 0.2 fr @ 0.6328µm
Irregularity(Diamond Turned Lens) 1 – 3 fr @ 0.6328µm 1 fr @ 0.6328µm 0.1 fr @ 0.6328µm
Flatness
(Polished Plano)
4 fr @ 0.6328µm 1 fr @ 0.6328µm 0.1 fr @ 0.6328µm
Irregularity
(Polished Plano)
1 fr @ 0.6328µm 0.5 fr @ 0.6328µm 0.1 fr @ 0.6328µm
Edge Thickness Variation ≤ 0.025mm ≤ 0.012mm ≤ 0.005mm
Parallelism (Windows) ≤ 3 minutes ≤1 minute ≤ 0.5 second
Surface Roughness (Material Dependent) < 65 Å rms ≤ 50 Å rms ≤ 5 Å rms
Surface Quality (Polished)
(Per MIL-PRF-13830 unless
otherwise specified)
60-40

80-50
60-40
40-20
20-10
10-5