Barr Associates Ltd:

                                                              1.5µm to 40µm

       More than 100 space missions                         

                                                                    Custom design interference filters

                                         Infrared

                                                                                                       Gas detection

           Variable Filters (VF)

                                                       40 years experience

                                         Linear Variable Filter (LVF)

                                                                                              Scientific and Prototype

            Defence

                                                                                      Astronomy

Click here for our 

Filter capabilities

Visit our LVF page

LVF NEWS:   1.6 to 4.2 microns LVF now available!!                   Barr pushing the limit for QinetiQ, achieving 1um/mm gradient...               also...              7 to 14um Bandpass Lvfs close to completion       » More details?