Telecentric lens and optical equipment

The utility model discloses a telecentric lens and optical equipment. Comprising a first lens with positive focal power and a biconvex structure, a second lens with positive focal power and a meniscus structure, a third lens with negative focal power and a biconcave structure, a fourth lens with positive focal power and a biconvex structure, a fifth lens with positive focal power and a meniscus structure, and a diaphragm which are sequentially arranged from an object space to an image space, the lens comprises a first lens with negative focal power and a meniscus structure, a second lens with positive focal power and a meniscus structure, a sixth lens with negative focal power and a meniscus structure, a seventh lens with positive focal power and a meniscus structure, an eighth lens with positive focal power and a biconvex structure, and a ninth lens with positive focal power and a biconvex structure. The telecentric lens of the utility model achieves high-brightness imaging, has low tolerance sensitivity, an