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May 1, 2009 |
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Novoto receives another contract to develop a custom AOI equipment.
Novoto received another order to design a custom automated optical inspection (AOI) equipment. This is a repeat order from an existing client,
producing the state-of-the-art holographic displays. The client asked Novoto to build another machine after the recent success with an LCD assembly
machine that Novoto designed for the DARPA (Defense Advanced Research Projects Agency) project.
It involves a design of high accuracy/repeatability
XY stages with linear motors and high resolution encoders, various flexure based mechanisms for aligning optics assemblies,
vibration analysis for the tool frame, design for ergonomics, applying SEMI S8 standards.
It incorporates a novel adjustment mechanism
for XY stage orthogonality adjustment, utilizing flexure bearings. XY stage orthogonality adjustment has always been a problem in the existing XY stages
you typically find in the industry. Novoto took a novel concept to make this adjustment process easier. You donít really see off-the-shelf stages in
the market with such features built-in. The problem is when screws are tighten down, everything moves. You can have the most advanced metrology tools
to align, but you must be able to lock down the desired position mechanically. Without it, one can spend days, trying via a method of over-compensation.
Consequently, wasting a lot of money in labor and time. If things need to be re-adjusted in the field due to an actuator failure or screws loosening from
shippng, etc., it really becomes a nightmare.
Novoto is working with a clientís multi-disciplinary team with expertise in optics and controls,
a proven combination from the past projects.
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