NITTOH KOGAKU K.K.

Nittoh is committed to craftsmanship and passing down the skills of its craftsmen, and is taking on the challenge of ever more difficult projects as it works on manufacturing molds. We will continue striving to further improve our current mold technologies, and will continue taking on the challenges posed by new needs. From machining of centered optics and free-form surfaces to aspherical multi lens arrays, we are pushing the limits of submicron-level high precision machining for a range of products, fully utilizing the capabilities of our ultraprecision processing machines and the capabilities of our evaluation machines.

Manufacturing molds for free-form lenses

In response to demands for higher functionality, more compact design and reduced costs for optical units, an effective method that is attracting more and more interest as an evolved form of aspherical surfaces is the utilization of optical elements with free-form and diffractive surfaces. As image resolution increases, the shape accuracy required of the elements themselves is becoming stricter every year.
Nittoh is evolving further in order to manufacture the optical element molds that will mold our future. We have already begun manufacturing high precision free-form molds as we aim to meet the sophisticated needs of our customers.
Talk to Nittoh about your requirements. As optical element mold professionals, we will provide the support you need.

Actively taking on the challenges of new machining technologies

　　　Machined using Fast Tool Servo system with Nanoform 250 ultra, an ultraprecision processing machine
　　　　　　Measurement range: Area of 3×3 (6.5mm square) from lens array center
　　　　　　Measurement instrument: Talysurf CCI Lite

Making optimum use of the features of existing lathes and other ultraprecision processing machines, Nittoh is working to manufacture lens arrays and other detailed profiles that were previously impossible.
Nittoh is working on drastic reductions to machining times and improvements to machined surface precision by synchronizing the motion of the machining center (main axis and tool axis), maintaining precise control of the machined surface, and using mathematical algorithms to machine high speed, high precision, detailed three-dimensional profiles.

Key machinery and equipment for machining molds

(As of end of February 2009)