Muncy, Geissler, Olds & Lowe, P.C.
Optical lens and fabrication method thereof
An optical lens includes a first lens group with a negative refractive power, a second lens group with a positive refractive power, and an aperture stop disposed between the first lens group and the second lens group. The second lens group is disposed between the first lens group and the second side. The optical lens satisfies the conditions: 2.1<D1/D3<3.0 and 1.9<D1/DL<3.2, where D1 is a diameter of a surface of the first lens facing the first side, D3 is a diameter of a surface of the third lens facing the first side, DL is a diameter of a surface of a last lens facing the second side, and the last lens is nearest the second side as compared with any other lens of the optical lens.
RAYS OPTICS INC.
G G G G
G02B G02B G02B G02B
inventional inventional inventional inventional
Hsin-Te Kuo-Chuan Sheng-Da Ching-Sheng
Chen Wang Jiang Chang