Patent ID: 10534158

Abstract:
A wide angle lens includes a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens and a seventh lens which are disposed in order from an object side. The first, second, third and sixth lenses are negative meniscus lenses, and the fourth, fifth and seventh lenses are positive lenses. The fifth lens is a glass lens, and the second, third, fourth, sixth and seventh lenses are plastic lenses. The sixth lens and the seventh lens constitute a cemented lens. When a center curvature radius on an image side face of the fifth lens is R52 and a focal length of an entire wide angle lens is f0, the center curvature radius R52 and the focal length f0 satisfy the following conditional expression: 2×f0≤|R52|≤5×f0.