Photographing small lens for developing a close tolerance

摘要

In the lens system arranged from the object to the first lens, the second lens, the third lens, the fourth lens and the fifth lens along the optical axis, 0.85 < P1/P < 1.15, |P2| < 0.01, |P3| < 0.1, |P4| < 0.1 and |P5| <0.1 is satisfied (where P1 is the refractive power of the first lens, P2 is the refractive power of the second lens, P3 is the refractive power of the third lens, P4 is the refractive power of the fourth lens, and P5 is The refractive power of the fifth lens, P denotes the refractive power of the entire lens system).