Tube Collimators
All of Optical Surfaces’ collimators are constructed in thick-walled aluminium tube, in blue or white as standard, with matt black internal walls. The optics are made from zero-expansion glass ceramic to ensure stability over a wide range of temperatures, are secured by stress-free mounts and aligned in our laboratory. To facilitate ease of use each of the collimator's feet are adjustable by +/-10mm for centre height adjustment.
  • The combined optical performance is better than lambda/5 p-v at 633nm wavefront in the field centre.
  • Achromatic performance can be used at any wavelength from infra-red through the visible into ultra-violet.
  • An output port is provided giving a measured distance to the focal plane of each collimator. Output ports with custom-designed holes and platforms are available on request.
  • Invar tied optics where necessary to stabilize focal plane.
  • Field 20mm to cover standard black bodies. Larger sizes on request.
  • Collimators are supplied with interferograms and analysis showing wavefront accuracy, and measured data includes focal length and distance.
  • Unless specifically requested all standard models are coated with Al+MgF2.
DATA SHEET pdf
• Reflecting collimators
ApertureFocal lengthLDHW
100750790230125-14525
120750790230125-14525
12010001000230125-14590
12015001500230125-14590
19010001000350235-24590
19015001490350235-245140
19020001990350235-255140
19030002990350235-255140
19030002990350235-255140
Custom Manufactured Collimators
Our standard range of collimators are manufactured to the most precise standards. Collimators can be custom made to any particular size, using specified coatings with output ports or with custom-designed holes, each manufactured to meet your specific needs. Please select Mounted and Custom Optics from the menu bar to your left to read more.