Provided is a contact lens having a novel structure with a high level of practicality which is easy to manufacture and apply to users, and can improve quality of vision. The instrument bar is arranged on top of the nacelle. A concentration C1 corresponding to a peak of the impurity concentration in the first impurity region, a concentration C2 corresponding to a peak of the impurity concentration in the second impurity region and a concentration C3 corresponding to a peak of the impurity concentration in the third impurity region satisfy the following relationship:C2<C3<C1. The short-circuited mesas are formed alongside the VCSELs and are bonded to and form a short circuit to a second metal contact pad on the grounding substrate. The limiting block is disposed between the positive stops of the limit to limit relative rotational angles of the leaves.