Hon Hai Precision Industry Co., Ltd.

Yu-Chung Su

Chun-Cheng Ko

A high-resolution imaging lens proofed against high-temperature instability includes a first lens with a negative power, a second lens with a negative power, a third lens with a positive power, a fourth lens with a negative power, a fifth lens with a positive power, and a sixth lens with a positive power. The first to the sixth lenses satisfy conditions of F1&#x3c;0; 0.8&#x3e;|F2/F6|&#x3e;0.6, F2&#x3c;0, F6&#x3e;0; &#x2212;3&#x3e;F4/F5&#x3e;&#x2212;2, and 2.0&#x3c;F/#. Each of the first lens, the third lens, the fourth lens, and the fifth lens is made of glass, each of the second lens and the sixth lens is made of plastic.

Imaging lens and electronic device having the same

A lens module includes a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, and an imaging surface, arranged in that sequence from an object side to an image side. The lens module uses infrared light which has a wavelength ranging from 920 to 970 nm, the lens module satisfies the following conditions: 0.0002&#x3c;|1/F1|&#x3c;0.01; D/TTL&#x3e;1.1; CT4/ET4&#x3c;1.8; F1 denotes a focal length of the first lens, D denotes a diameter of a largest imaging circle of the lens module, TTL denotes a distance between an object side surface of the first lens to the imaging surface, CT4 denotes a central thickness of the fourth lens, ET4 denotes an edge thickness of the fourth lens.

Growing community of inventors

Taipei, Taiwan

Yu-Chung Su