A Shack-Hartmann wave-front sensor system has been used to measure a set of plano-convex lenses at two different times, separated by almost 2 years. The plano-convex lenses were selected to cover a range of powers and apertures relevant to intraocular lenses, and were measured at two different orientations. The results demonstrate the high temporal stability of the measurement system, as well as of the glass standard.
filed under: Thickness Measurement
Medical device manufacturers often struggle when inspecting balloons, tubes, stents, and other medical products with many simplistic measurement devices in use today. There are limitations when using micrometers, microscopes, pin gauges, and razor blades that limit accuracy, repeatability, and general ease-of-use.
filed under: medical balloons, Thickness Measurement
Abstract—The silicon wafer manufacturing process relies heavily on precision polished wafers that have uniform thickness and, depending on the application, also control parallelism to a secondary wafer after bonding.
Lumetrics’ low coherence interferometer, commercially marketed as OptiGauge II, is a device capable of measuring the simultaneous wafer thickness, adhesive thickness, and parallelism between surfaces to sub-micron precision. Combined with custom software and a precision XY raster scanner, a wafer or wafer assembly can be fully characterized with respect to layer thicknesses and surface parallelism.
Index Terms—adhesive, flatness, interferometry, metrology, optical thickness measurement, parallelism, silicon, wafer
filed under: Dimensional Measurement, Lumetrics, Non contact thickness measurement, optical thickness measurement, OptiGauge, OptiGauge II, Thickness Measurement
How Lumetrics developed the Data Relay application to meet the needs of a customer who needed to use a non-windows based system.
filed under: Lumetrics, Thickness Measurement
August 15, 2016, Rochester, NY: Lumetrics Inc., the leading manufacturer of precision measurement solution equipment known for offering precision thickness and wavefront measurement instrumentation, is proud to announce the launch of its highly anticipated Web Store. Lumetrics’ Web Store allows customers to easily order probes, fixtures, software, and other accessories in the U.S. (please note that web store shipments are limited to shipments to US State & territories). Lumetrics plans on adding international ordering to the Web Store in the future.
filed under: contact lenses, Lumetrics Inc., Non contact thickness measurement, Thickness Measurement, Wavefront Measurement Articles, WaveFront Sciences, web store
A customer approached Lumetrics with a need to determine and certify the precision wedge angle measurement of low angle wedges in the range of 0.5 - 3.5° with a high degree of accuracy. A custom fixture was designed and constructed which included x, y, z and rotation stages with micrometer precision position feedback as shown in the diagram.
filed under: Dimensional Measurement, glass thickness measurement, Lumetrics, Non-Contact Measurement, Thickness Measurement
A customer needed a custom automated test system to reduce the inspection time during the setup of their production mold tools. At the time they were using a semi-automated system that would take 10-15 minutes to measure all 10 cavities of the mold tool. Lumetrics was asked to reduce the measurement time to 10 seconds or less with the use of our OptiGauge technology as well as add some addition measurement and functional capabilities.
filed under: Lumetrics, Non contact thickness measurement, Opthalmics, OptiGauge, Thickness Measurement
Lumetrics is the leader in online tubing thickness measurement systems for the ophthalmic, glass, and medical device market. Our engineering team has developed a new fixture that eliminates the problems of line sensitivity that give all online systems trouble. The new fixturing provides for easy loading and accommodates line changeovers to different size tubing. Water is the enemy of all hydrophilic tubing production, and the OptiGauge provides the crucial inner diameter, outter diameter, and wall thickness readings that customers require.
filed under: Catheter Measurement, medical device inspection, Non-Contact Measurement, Non contact thickness measurement, OptiGauge, OptiGauge II, Thickness Measurement, tubing measurement
Lumetrics will be exhibiting at Photonics West this February in Booth #3018! Please stop by and say hello- we have lots of new measurement solutions for your manufacturing process.
filed under: Non contact thickness measurement, optical thickness measurement, Optics, OptiGauge, photonics west 2016, SPIE, Thickness Measurement
