ULO Optics’ ZnSe singlet scanning lenses, the TSL series, are optimised to minimise the off-axis aberrations.
best compromise for all aberrations, field flatness and F-theta error using a single-element, spherical surface lens
for beams up to 15mm full diameter
focal length from 75mm to over 2122 mm
covering field sizes from 50mm to 1500mm square
use extends over many engraving, marking and cutting applications
designed to be positioned at the same location relative to the scanning mirrors, so are directly replaceable with another focal length
also available mounted
available with a number of different coatings for different wavelengths
Standard singlet f-Theta scanning lenses for a 15 mm diameter beam:
Spot diameter (s.d.)*
171 (49) micron
181 (41) micron
219 (32) micron
269 (28) micron
320 (23) micron
373 (20) micron
445 (16) micron
481 (15) micron
525 (15) micron
850 (9) micron
1390 (6) micron
1520 (7) micron
2480 (3) micron
s.d.* = Standard deviation
Spot diameter is determined from optical computation and are not measured values from marking or engraving. The width of an engraved line is affected by laser power, material, scan speed, etc and is normally less than the values listed here.
Should smaller spot sizes be required for the same focusing lens, we recommend the use of multi-element lenses, or of our larger diamter singlets (Please call for more info on the larger diameter singlets).
Please note that this page is only a representation of our most commonly used replacement f-Theta singlet lenses and is not our entire product line. If there is an item not listed or you have questions, please feel free to contact us and we will be more than happy to assist you.
ULO Optics is an ISO certified company and quality is at the heart of everything we do. With a host of industrial affiliations you can rely on ULO to deliver.
Beam Expanders for 1μm lasers
ULO Optics are excited to introduce our new range of beamexpanders. Designed for low power (500w) lasers such as Nd:YAG and Yb doped fibre lasers operating near the 1μm wavelength. The beamexpanders are of Galillean design and use Multi-spectral Zinc Sulphide for the optics which has an absorption at 1μm of 0.0005cm−1 (Similar to ZnSe at 10.6μm).
ULO Exhibit in Munich
ULO Optics will exhibiting at this year’s Laser World of Photonics exhibition and would like to invite all existing and potential customers to come and visit our stand.
Visit us at Booth # B2 .120 | June 22 -25
ULO Optics develops CO2 Brewster plate beamcombiner
In our new beamcombiner – C-BC-2, pairs of enhanced Brewster Windows are used to attenuate a linearly polarised CO2 laser beam. The Brewster plate acts like a polarising beamsplitter. The difference in reflectance also allows two perpendicular polarised beams to be combined into a single beam.