Hon Hai Precision Industry Co., Ltd.

Hsing-chen Liu

Gwo-Yan Huang

Chia-chih Yu

A compact optical imaging device with shortened focal length, for use in an imaging module and an electronic device, comprises first to fifth lenses. An image-side surface of the first lens is concave near an optical axis. An image-side surface of the third lens is concave near the optical axis. The second and fourth lenses have a negative refractive power. The third and fifth lenses have a positive refractive power. The optical imaging device satisfies formulas: 95°/mm<FOV/TL5<105°/mm and 1 mm<FNO/TL4<1.5 mm, FOV being a maximum field of view of the optical imaging device, TL5 being a distance from an object-side surface of the fifth lens to an image plane of the optical imaging device along the optical axis, FNO being a F-number of the optical imaging device, and TL4 being a distance from an object-side surface of the fourth lens to the image plane along the optical axis.

Compact optical imaging device with shortened focal length, imaging module, and electronic device

An optical imaging lens proofed against field curvatures, in an imaging module, and the module being used in an electronic device, is, from an object side to an image side, composed of a first lens with a positive refractive power, a second lens, a third lens, a fourth lens with a negative refractive power, a fifth lens, and a sixth lens with a negative refractive power. The optical imaging lens satisfies the formula −3 mm<FNO/f6<−0.1 mm, −0.065 mm/°<f6/FOV<−0.03 mm/°, wherein FNO is a F-number of the optical imaging lens, f6 is a focal length of the sixth lens, and FOV is a maximum field of view of the optical imaging lens.

Growing community of inventors

Taipei, Taiwan

Hsing-chen Liu