Double telecentric projection lens and projection system

A projection system, comprising an illumination module and a double telecentric projection lens, the illumination module is arranged on a light incident side of the double telecentric projection lens, the illumination module is configured to supply an illumination light beam to the double telecentric projection lens;

• the double telecentric projection lens comprising:
• a first lens group, an aperture stop, and a second lens group that are successively arranged from an object side to an image side, a center of the aperture stop being at a rear focus of the first lens group and a front focus of the second lens group;
• wherein
• the first lens group is configured to receive a projection light beam incident parallel to a central optical axis of the first lens group, and expand the projection light beam;
• the aperture stop is configured to receive the projection light beam emitted from the first lens group, and cause the projection light beam to be transmitted to the second lens group;
• and
• the second lens group is configured to receive the projection light beam emitted from the aperture stop, converge the projection light beam, and cause the projection light beam to be emitted parallel to a central optical axis of the second lens group;
• wherein a focal power of the double telecentric projection lens is greater than 0.03, an object-side numerical aperture of the double telecentric projection lens is 1.7, and an image-side numerical aperture of the double telecentric projection lens is 5.95.