In order to simulate the outer space's vacuum conditions

and to test the performance of a Extreme-Ultraviolet (EUV) solar telescope

a collimator system working in wavelength of 17~30 nm is presented

which consists of a laser produced plasma source

a Newton type collimator

a back illuminating CCD camera and a high vacuum system. The method and result of the physical design

optical system and vacuum system are described in detail. The test result shows the vacuum grade of the system is 5×10

-4

Pa after 80 min

and it can meet the test demands of the EUV solar telescope .