An insertion portion, a projecting portion that projects forward from a first distal end surface of the insertion portion, a forward observing lens that faces a second distal end surface of the projecting portion, a dual purpose lens a light receiving surface of which faces an outer peripheral side surface of the projecting portion along the outer peripheral side surface of the projecting portion, a first forward illuminating lens that faces the first distal end surface, and a light shielding portion 20m that is located on a phantom line that linearly connects an end portion at a distal end side of the dual purpose lens and an end portion at an outer side in a diameter direction K in the first forward illuminating lens are included.
