| 摘要 |
PROBLEM TO BE SOLVED: To provide a photographing lens that can control a noise reduction effect and resolution degradation in accordance with optical performance at the focal distance of the lens, and to provide an imaging device that has the photographing lens.SOLUTION: A photographing lens SL to be mounted to an imaging device 100 is the photographing lens that can be focused by changing a shooting distance length, and has an optical low-pass filter FL that has at least one birefringent plate making a ray of incident light split into two rays and emitted. In at least two different shooting distance states, the optical low-pass filter FL is arranged at a position where an angle ratio of an angle of incidence of a ray of light to be incident upon the optical low-pass filter FL and an angle of incidence of the ray of light to be incident upon an imaging plane I is different, in which each angle of incidence is calculated by paraxial ray tracing. |
