The present invention discloses a wide-
field survey telescope Cartesian optical
system. The
system comprises a
primary mirror, a
secondary mirror, an
optical filter, a shading
system, a correction mirror 1, a correction mirror 2 and a correction mirror 3. The shielding system comprises a
secondary mirror shading cover and a correction mirror
barrel, the middle portion of the
primary mirror is provided with a
primary mirror center hole, the correction mirror
barrel is located in the center hole of the primary mirror, the internal portion of the correction mirror
barrel comprises in order from left to right: the correction mirror 1, the correction mirror 2, the
optical filter and the correction mirror 3 which are in seal connection; the
secondary mirror is located at the left sides of the correction mirror barrel and the primary mirror, the secondary mirror shading cover is located at the right side of the secondary mirror and the secondary mirror shading cover is in seal connection withthe secondary mirror, the external parallel light is reflected through the primary mirror to regulate the direction so as to form reflect light 1, the reflect light is reflected through the secondarymirror to regulate the direction so as to form reflection light 2, and the reflect light passes through the correction mirror 1, the correction mirror 2 and the
optical filter and the correction mirror 3 to be transmitted to the
detector. The wide-
field survey telescope Cartesian optical system can meet high demands such as the large field, the
broad band, the high light passing amount and the high
ultraviolet transmittance.