Abstract
There is presented to an up-conversion infrared telescope (110) arranged for imaging an associated scene (130), wherein the up-conversion infrared telescope (110) comprises a non-linear crystal (120) arranged for up-conversion of infrared electromagnetic radiation, and wherein a first optical component (101) has an entrance pupil with a first diameter D1, and an optical component system which is arranged for forming an first image (136) of the back-focal plane (132) of the objective optical component (100), which has a diameter (given by the diameter of a circle enclosing all optical paths at the plane of the external image) which is denominated D2 and wherein D1 is larger than a second diameter D2 and wherein the telescope further comprises a third optical component (103) and a fourth optical component (104); arranged for re-imaging the first image into a second image of the back-focal plane (132) of the first optical component (101).
| Original language | English |
|---|---|
| IPC | G02B23/12 |
| Patent number | WO2014117781 |
| Filing date | 07/08/2014 |
| Country/Territory | Denmark |
| Priority date | 31/01/2013 |
| Priority number | EP20130153492 |
| Publication status | Published - 2014 |