Taylor Hobson launches worlds
highest resolution form and surface finish profiler – Form
Talysurf PGI 2540 Aspheric Measurement System with 0.2nm Resolution
At the Photonics West show, San Jose, USA on 22nd January
2008, Taylor Hobson launched the latest in a long line of measuring
instruments dedicated to the optics industry.
The new Form Talysurf PGI 2540 takes combined form and surface
finish measurement systems to a new level, for the first time offering
a single instrument that can measure form with up to 25mm vertical
range and surface finish down to 0.2 nanometer resolution. The system
is focussed on delivering the metrology required to enable the optics
sector to produce higher quality ultra precision lenses used in
today’s high volume markets like TV projectors, digital
cameras and mobile phone cameras. The PGI 2540 is able to measure the
most complex rotationally symmetric lenses and automatically calculate
aspheric coefficients and errors from the design data.
This system offers 200mm traverse length with a motorised
stylus lift mechanism, which allows many components to be measured
without moving the column position between traces. This improves the
stability of measurement. The system is also provided with
active anti-vibration mounts and a high quality environmental enclosure
to reduce the effects of air-borne and floor-borne vibrations.
Taylor Hobson’s world renowned Ultra software is
provided for instrument control and analysis. As well as
standard surface finish analysis, this system also provides ellipse /
hyperbola fitting and aspheric analysis up to 20th order, including
base radius optimisation, SAG table generation and derived coefficients
analysis. As an option the system can also be supplied with Diffractive
Analysis software for the measurement of asphero-diffractive components.
Using its intuitive “learn mode”
capability, Ultra software enables the user to create measurement
programs for repeat measurement of components. As part of
such a program, the stylus lift mechanism can be programmed to
automatically lift the stylus to any position within the measuring
range; automatic measurements can be recorded and custom results pages
can be created.
Taylor Hobson has long been established as a world leader in
providing measurement systems to the optics industry. Founded
as an optics manufacturer in 1886, the Company has a long history in
developing optics, supplying over 80% of the world's motion picture
lenses by 1940. The development of its metrology products was
started in 1941 in order to improve its production capability and the
quality of its lenses. In 1984 Taylor Hobson launched the
first Form Talysurf instrument providing the first production system to
measure both surface finish and form in a single measurement.
The Form Talysurf quickly established itself as world leader in the
optics industry and has been followed by a number of innovative systems
including the PGI range, which is based upon a patented phase grating
With the launch of the Form Talysurf PGI 2540 Aspheric
Measurement System AMETEK Taylor Hobson once again demonstrates its
ability to meet the challenges of the most demanding measurement
applications; driving growth through solving problems.