Your browser does not support JavaScript
Greenlight Optics
Ultra-Precision Machine Technology: Diamond Turning
Sunday, April 17, 2016

Ultra-precision machining is the act of removing material from a substrate with a tool that operates at a resolution of 10 nm (0.4 uin) or less, either from a single-point diamond turning or free form machining.

Hardly a historical form of machining, diamond turning saw it’s first advances in the 1980’s and is now an established and affordable process for crafting highly accurate optical components requiring micro-inch dimensional tolerances.

With an ultra-precision, vibration-free machine, a single-crystal, natural diamond cutting tool efficiently and cleanly removes material from the substrate. The tool’s cutting edge is extremely sharp, so very little pressure is necessary, resulting in a surface with perfected optical qualities.

Optical quality requires extreme precision, which can be compromised when tools experience wear. Diamond tools retain a precise cutting edge throughout the machining process thanks to an extreme hardness that grants them a high tolerance to wear. This results in a highly reflective, low-scatter optical surface with accuracies that range 2 to 4 uin., peak-to-valley.

Diamond turning tools have a well-defined grain structure, unlike carbide or CBN (cubic boron nitride) tools. When mounting the tool in its shank, tool manufacturers orient the tool so as to make optimal use of the hardest point of the diamond. This orientation provides for the longest possible tool life, while also maximizing the tool’s resistance to wear. Because of the single-crystal grain structure, diamond tools can be sharpened to the level of atomic spacing, approximately 3 to 5.

For us, in-house diamond turning enables rapid fabrication of precision plastic lenses, mirrors, and injection mold inserts.  Combined with our other capabilities, the result is unmatched speed and flexibility. 

We have two diamond turning machines: the Pneumo MSG 325 and the Moore Nanotech 250UPL.

The Pneumo MSG 325 delivers outstanding precision, and offers a large, 2-axis-turning capacity. The MSG 325 has precision air-bearing spindle, air bearing linear slides, laser interferometer position control, toolset station, and exceptional stability. 

The Moore Nanotech 250UPL is extraordinarily accurate. The Nanotech has box way hydrostatic slides, an air bearing spindle with liquid cooling, and is equipped with a C-axis control and NanoCam 3D software for freeform optics fabrication.  In addition, on-machine gaging and a Taylor Hobson Series 2 Talysurf profilometer allow for precision metrology.

Every new diamond turning job requires creativity and attention to detail.  Our machinists have extensive experience with diamond turning.  You can count on us to deliver a perfect product every time.


Blog Categories

  • General Interest
    • 08/17/2018 - Importance of Prototyping
    • 07/20/2018 - Projection Technology Enables
    • 06/15/2018 - Structured Light Projection En
    • 02/16/2018 - Design and Production of Optic
    • 01/26/2018 - Discovering the Revolutionary
    • 09/02/2017 - The Measure of Metrology
    • 08/01/2017 - What is a laminar flow bench?
    • 07/01/2017 - World Class Optical Design
    • 05/02/2017 - Understanding the Basics of LE
    • 11/14/2016 - What is ISO 9001?
    • 08/22/2016 - Current and Future Uses of DLP
    • 07/14/2016 - Use of Lasers in Medical Techn
    • 06/15/2016 - How Lasers will Help You Get B
    • 05/12/2016 - Why Photographers Love OLED Sc
    • 04/17/2016 - Ultra-Precision Machine Techno
    • 03/15/2016 - Future Global Demand for Surgi
    • 11/03/2015 - The Man Behind the Light-Emitt
    • 10/09/2015 - A Few More Approaches to Diamo
    • 09/21/2015 - Inside a Few Approaches to Dia
    • 08/20/2015 - The Device that Spurred the Cr
    • 07/08/2015 - What Does it Mean? The Final F
    • 06/23/2015 - What Does it Mean? Even More A
    • 05/22/2015 - What Does it Mean? Answers Beh
    • 04/13/2015 - Red Light, Green Light: How Tr
    • 03/13/2015 - What Does it Mean? The Answers
    • 02/12/2015 - What You May Have Missed with
    • 01/07/2015 - What Can Be Developed with Opt
    • 12/16/2014 - The Development of LEDs and Wh
    • 11/13/2014 - More Facts About Other Greenli
    • 10/06/2014 - A World Record-Breaking Laser
    • 09/17/2014 - An Inside Look at the Maser
    • 08/12/2014 - The 411 on LEDs
    • 07/08/2014 - Invention of the Laser
    • 06/10/2014 - Laser Pointers: Colors and Use
    • 05/21/2014 - How LEDs Appear Brighter to Ou
    • 04/02/2014 - Let There Be Light! The Boomin
    • 03/18/2014 - Practical Applications: Medica
  • Recent News
8940 Glendale-Milford Road
Loveland, Ohio 45140
Mon - Fri 8:30AM to 5:00PM

Phone: 1 (513) 247-9777



Follow Us on Facebook
Follow Us on Twitter
Follow Us on LinkedIn
Follow Us on YouTube