Largan Precision Co., Ltd.

Yi-Hsiang Chuang

Tzu-Chieh Kuo

Wen-Yao Yang

Wei-Yu Chen

Chun-Yen Chen

Kuan-Ting Yeh

Yu-Chun Ke

Kuan Chun Wang

Chung-Yu Wei

A photographing optical lens system includes five lens elements being, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each lens element has an object-side surface facing the object side and an image-side surface facing the image side. The first lens element has positive refractive power and the object-side surface being convex in a paraxial region thereof. The image-side surface of the third lens element is convex in a paraxial region thereof. The object-side surface of the fourth lens element is convex in a paraxial region thereof. The fifth lens element has negative refractive power, the object-side surface being convex, and the image-side surface being concave in a paraxial region thereof.

Photographing optical lens system, imaging apparatus and electronic device

An optical imaging system includes six lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. Each of the six lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has negative refractive power, and the object-side surface of the first lens element is concave in a paraxial region thereof. The image-side surface of the second lens element is concave in a paraxial region thereof. The fourth lens element has negative refractive power. The image-side surface of the sixth lens element is concave in a paraxial region thereof and has at least one critical point in an off-axis region thereof.

Optical imaging system, image capturing unit and electronic device

An imaging optical lens assembly includes five lens elements, which are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface towards the object side and an image-side surface towards the image side. The third lens element has positive refractive power. At least one of the object-side surface and the image-side surface of at least one of the five lens elements includes at least one critical point in an off-axis region thereof.

Imaging optical lens assembly including five lenses +−++−, −++−, −−++−, +−+++, +++−+, +−+−+, +−+−−, or −++−+ of refractive powers, imaging apparatus and electronic device

An image capturing lens assembly includes six lens elements which are, in order from an object side to an image side along an optical path: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The sixth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. At least one of an object-side surface and an image-side surface of at least one lens element has at least one inflection in an off-axis region thereof.

Growing community of inventors

Taichung, Taiwan

Yi-Hsiang Chuang