Sirtec International (suzhou) Co. Ltd

C S Cheng

Satoshi Do

A wide-angle lens is disclosed. The wide-angle lens includes a first lens element L, a second lens element L, a third lens element L, an aperture diaphragm S, a fourth lens element Land a fifth lens element Larranged from an object plane to an image plane. The first element Lis a meniscus lens element having a negative focal power and protruding toward the object plane, the second element Lis a meniscus lens element having a negative focal power and protruding toward the object plane, the third element Lis a meniscus lens element having a positive focal power and protruding toward the image plane, the fourth element Lis a meniscus lens element having a negative focal power and protruding toward the object plane, and the fifth element Lis a lens element having a positive focal power.

Growing community of inventors

Chungli, China

C S Cheng