Since its founding in 2005, Bristol Instruments has solely focused on designing, manufacturing, and marketing precision instruments utilizing its industry expertise in optical interferometry for the scientific, fiber communications, and optical metrology markets.
Bristol Instruments offers an Optical Thickness Gauge that uses optical interferometer-based technology to measure the absolute thickness of transparent and semi-transparent materials. Precision thickness information is critical in the development and production of a variety of materials, including plastic films, medical tubing, and ophthalmic products.
Bristol Instruments, Inc.
770 Canning Parkway
Victor, NY 14564
Phone: (585) 924-2620
Fax: (585) 924-2623
The 137/157 Optical Thickness Gauges deliver reliably accuracy and exceptional repeatability for the most demanding thickness testing applications. These gauges are ideal for contact and intraocular lenses, medical balloon catheters, medical tubing, plastic films, laminates, glass, and adhesives.
Bristol Instruments offers a range of optical gauge probes for different thickness measurement applications. Probes are chosen based on the thickness of the material to be tested, the accuracy required while testing, and the need for simplified alignment.
Bristol Instruments’ Quick Align (QA) Optical Smart Probe is designed to offer unique alignment for use in production environments where the most precise and reliable information is required. A built-inn camera is included to detect the location of the reflected optical signal from the tested material. The alignment of the probe is then adjusted so that the optical signal is on target.
This optical thickness gauge answers the need for precise thickness information in the design and manufacturing of specialty plastic films, medical membranes, and ophthalmic products.
The 137 Series Optical Thickness Gauge includes a super-luminescent LED (SLED), an interferometer assembly, and a digital processor, all housed within a single chassis.
This technical note provides details on how the 157 Series Optical Thickness Gauge by Bristol Instruments can be used to determine the precise thickness of cemented or air-spaced achromatic doublets and triplets (as well as more complex lens stacks), and other lens assemblies.
Bristol Instruments’ 157 Series optical thickness gauge is ideal for contact lens metrology. Its guaranteed performance over long periods of time and its ability to measure absolute thickness to an accuracy of + 0.1 µm and repeatability as high as + 0.05 µm make it an ideal solution for this application.
This technical note explains how continuous references measurements, an optical design used to maintain optical alignment, and an interferometer’s optical path all contribute to the thermal stability of the 157 Series Optical Thickness Gauge by Bristol Instruments.