Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

Coherix develops micron-level image detective

The ShaPix system provides a 3-D visual analysis on a particular part's dimensions and quality as well as information on process performance and machine operation.

To human eyes, just-produced parts can appear devoid of flaws. But when a high-definition image detective goes to work inside a manufacturing plant, defective parts are caught and money is saved.

"We see the automotive industry gaining $5 billion to as much as $10 billion a year by moving from mechanical measurements—namely coordinate measurement machines—to high-definition optical metrology," said Dwight Carlson, Founder, Chairman, and CEO of Michigan-based Coherix, a supplier of holographic and optical-based inspection systems for measuring machined parts.

That expected financial impact is attributed to being able to confirm, compare, and communicate a part's perfections or imperfections via a three-dimensional image so that design as well as production validation can unfold quickly. High-definition holographic analysis, according to Carlson, can improve parts quality, reduce material scrap, slash warranty costs, as well as eliminate remanufacturing costs.

Coherix is the latest Carlson-founded technology company. In 1981, the automotive engineer founded Perceptron, a company that pioneered laser-based metrology for measuring automotive bodies. Prior to that, Carlson was co-founder and CEO of Xycom, which developed the first microcomputer used in self-service gasoline pumps. "Starting companies is my sport," Carlson said.

Over the past couple of years, more than 15 automakers and suppliers have tapped Coherix systems—which utilize digital holographic imaging technology developed at the University of Michigan—for scanning of components at off-line factory floor locales. "We expect orders for the first in-line applications to be received yet this year," said Lee Gorman, Director of the Automotive Business Unit for Coherix.

Engines, transmissions, and chassis components represent the bulk of what is currently being checked by ShaPix in the automotive arena. The ShaPix system can be used to evaluate "surfaces for 'flatness' and can also measure hole, size, and location," according to Gorman, who adds that "different optics would be required for cylindrical parts—inner and outer diameter—and complex shapes like gears. This is still at the R&D stage."

The fundamental pieces of Coherix's high-definition surface metrology equipment are a parabolic mirror, an interferometer, a tunable-wavelength laser, a charge-coupled device (CCD) camera, a high-performance computer, and holographic software. All the equipment is housed in two units: a Sensor Head Unit for the interferometer as well as the part or assembly to be measured, and a System Control WorkStation for the computer, laser, and controls.

A high-definition image appears on a computer screen after coherent light from the laser shines onto the parabolic mirror, which in turn illuminates the part being inspected. Light then bounces off the part and back to the fixed CCD detector array where an algorithm processes the information to create a full-color digital image of the precision-machined metal part.

"A detailed surface map, which can be viewed on-site or from a remote workstation, shows the part captured digitally in a matter of seconds. This 3-D pictorial is based on as many as four million X, Y, and Z data points versus traditional metrology, which typically uses fewer than 6000 data points. Companies can use ShaPix to obtain quantifiable and intuitive information about their manufacturing processes much faster and in much more detail than common metrology devices," said Ron Swonger, Vice President of Product Development for Coherix.

Kami Buchholz

Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.