Free-form surface lens curvature measuring device and application thereof

The invention discloses a free-form surface lens curvature measuring device, which is characterized in that a clamp for clamping a to-be-measured free-form surface lens or a blank material thereof is mounted on a moving platform in four dimensional directions, the moving platform acts in the X direction, the Y direction, the Z direction and the O direction to determine the position of the clamp, so that the to-be-measured free-form surface lens or the blank material thereof reaches a required measuring position, and the to-be-measured free-form surface lens or the blank material thereof is measured. The curvature of the key curved surface can be effectively and quickly measured, so that equipment and process levels can be evaluated, and timely intervention is facilitated. According to the measuring method, the characteristics of the lens in machining are ingeniously utilized, the same datum line of measuring equipment and production equipment is kept, high-precision measurement can be achieved through simple