Largan Precision Co., Ltd.

Yu-Chun Ke

Tzu-Chieh Kuo

Yu-Tai Tseng

Kuo-Jui Wang

Wei-Yu Chen

Jin Sen Wang

Chun-Yen Chen

Yu Jui Lin

Kuan-Ting Yeh

Ssu-Hsin Liu

Kuan Chun Wang

Yi-Hsiang Chuang

Hong Rong Kuo

An imaging optical lens assembly includes four lens elements which are, in order from an object side to an image side: a first lens element, a second lens element, a third lens element and a fourth lens element. Each of the four lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. At least one of all lens surfaces of the four lens elements is aspheric and has at least one inflection point.

Imaging optical lens assembly, image capturing unit and electronic device

An optical imaging system includes seven 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, a sixth lens element and a seventh lens element. Each of the seven lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The seventh lens element has negative refractive power, and the object-side surface of the seventh lens element is concave in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the optical imaging system has at least one inflection point in an off-axis region thereof.

Optical imaging system, image capturing unit 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.

An imaging optical lens assembly includes seven 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, a sixth lens element and a seventh lens element. The third lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has an object-side surface being concave in a paraxial region thereof. The sixth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and the image-side surface of the sixth lens element has at least one critical point in an off-axis region thereof.

An image 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. The first lens element has positive refractive power. The second lens element with positive refractive power has an image-side surface being convex in a paraxial region thereof. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof. The fifth lens element has an image-side surface being concave in a paraxial region thereof and having at least one convex critical point in an off-axis region thereof.

Image lens assembly, image capturing unit and electronic device

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

Optical imaging lens assembly comprising five lenses of +&#x2212;&#x2212;+&#x2212;, +&#x2212;0+&#x2212;, +&#x2212;++&#x2212;, +&#x2212;+&#x2212;&#x2212;, or +&#x2212;&#x2212;&#x2212;&#x2212; refractive powers, image capturing unit and electronic device

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Taichung, Taiwan

Yu-Chun Ke