Calin Technology Co., Ltd.

Tsinghua University

Yi-Ling Yang

Cheng-Kuo Sung

Po-Nien Tsai

Shu-Chuan Hsu

Chien Hsiung Tseng

An optical imaging lens, in order from an object side to an image side along an optical axis, includes a first lens having negative refractive power; a second lens; a third lens cemented with the second lens to form a first compound lens having negative refractive power; a fourth lens having positive refractive power; a fifth lens; a sixth lens cemented with the fifth lens to form a second compound lens having positive refractive power; a seventh lens having positive refractive power. The optical imaging lens could provide a better optical performance of high image quality and low distortion.

Optical imaging lens

A fixed-focus projection lens, in order from an image side to an image source side along an optical axis, includes a first lens with negative refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with positive refractive power, and a sixth lens with positive refractive power. The second lens is a biconvex lens. While projecting, a light enters the fixed-focus projection lens from the image source side, and passes through the fixed-focus projection lens. Further more, at least one surface of the first lens is aspherical, a refractive index of the second lens is greater than 1.8, and a refractive index of the fifth lens is greater than 1.7. Such arrangement helps to lower a spherical aberration of spherical lens, shortening the optical system, and effectively lower the distortion.

Fixed-focus projection lens

An electronic apparatus with an active posture control function includes a body assembly, an accelerometer, a driving device and a controller. The body assembly includes a first body and a second body pivotally connected to the first body. The accelerometer mounted on the body assembly senses acceleration of the body assembly to output an acceleration signal. The driving device mounted on the body assembly drives at least one of the first body and the second body. The controller, mounted on the body assembly and electrically connected to the accelerometer and the driving device, receives the acceleration signal, judges whether the acceleration signal is higher than a predetermined level, and controls the driving device to adjust an included angle between the first body and the second body when the acceleration signal is higher than the predetermined level.

Growing community of inventors

Taichung, Taiwan

Yi-Ling Yang