This application discloses an optical module, including a light passing hole, an optical splitter, an optical imaging apparatus, and an optical apparatus, where light entering from the light passing hole is incident on the optical splitter; the optical splitter is configured to split the incident light into two parts, one part of the light enters the optical imaging apparatus, and the other part of the light enters the optical apparatus; the optical imaging apparatus is configured to collect a first image; and the optical apparatus is configured to collect a second image, or the optical apparatus is configured to implement an optical detection function.