OPTICAL SYSTEM INCLUDING CEMENTED LENSES, IMAGING APPARATUS INCLUDING THE SAME, AND MOVING APPARATUS INCLUDING THE SAME

An optical system includes an aperture stop closest to an object and a plurality of lenses. The plurality of lenses includes a first positive lens convex toward an object side, a first negative lens convex toward the object side, a first cemented lens, and a second cemented lens arranged consecutively in this order from the object side to an image side. The first cemented lens and the second cemented lens each include a negative lens concave toward the object side and a positive lens cemented to the negative lens, and the negative lens and the positive lens are arranged in this order from the object side to the image side.