Largan Precision Co., Ltd.

Yu Jui Lin

Tzu-Chieh Kuo

Hsin-Hsuan Huang

Wei-Yu Chen

Jin Sen Wang

Cheng-Chen Lin

Yu-Chun Ke

Chun-Che Hsueh

Chun-Yen Chen

Yu-Tai Tseng

Kuan-Ting Yeh

Meng-kuan Cho

Cheng-Yu Tsai

Cheng-Yuan Liao

I-Hsuan Chen

Wei-Xiang Fu

An imaging optical lens system includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element and an eighth lens element, in order from an object side to an image side along an optical path. The first lens element has an object-side surface being concave in a paraxial region thereof. The fourth lens element has negative refractive power. The fifth lens element has positive refractive power. At least one lens surface of at least one lens element of the imaging optical lens system has at least one critical point in an off-axis region thereof.

Imaging optical lens system, image capturing unit and electronic device

An imaging 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. 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 positive refractive power. The image-side surface of the fourth lens element is convex 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 imaging lens assembly has at least one critical point in an off-axis region thereof.

Imaging lens assembly, image capturing unit and electronic device

An imaging system lens assembly includes eight lens elements which are, in order from an object side to an image side along an optical path, a first lens element through an eighth lens element. The first lens element has negative refractive power. The object-side surface of the first lens element is concave in a paraxial region thereof and has at least one inflection point in an off-axis region thereof. The eighth lens element has positive refractive power. The object-side surface of the eighth lens element is convex in a paraxial region thereof. The image-side surface of the eighth lens element is concave in a paraxial region thereof and has at least one inflection point in an off-axis region thereof. At least one of the lens surface of at least one of the second through seventh lens elements has at least one inflection point in an off-axis region thereof.

Imaging system lens assembly, image capturing unit and electronic device including eight lenses of −++++−−+, −+++++−+ or −−+++−−+ refractive powers

An optical imaging lens system includes 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 in order from an object side to an image side along an optical path. 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 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 fifth lens element has an image-side surface being convex 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 having an inflection point.

Optical imaging lens system, image capturing unit and electronic device including six lenses of ++− ++− or ++−+− refractive powers

An imaging system lens assembly includes 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 in order from an object side to an image side along an optical path. 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 positive refractive power. The fifth lens element has positive refractive power. The image-side surface of the fifth lens element is concave in a paraxial region thereof. The image-side surface of the sixth lens element has at least one inflection point. A central thickness of the first lens element is a maximum among central thicknesses of all lens elements of the imaging system lens assembly.

Imaging system lens assembly, image capturing unit and electronic device

A photographing 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. The first lens element has positive refractive power. The second lens element has negative refractive power. When specific conditions are satisfied, the requirements of compact size and high image quality can be met by the photographing optical lens assembly, simultaneously.

Photographing optical lens assembly, image capturing unit and electronic device

An 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. An object-side surface of the first lens element is concave in a paraxial region thereof. The third lens element has positive refractive power. An object-side surface of the sixth lens element is convex in a paraxial region thereof, and an image-side surface of the sixth lens element is concave in a paraxial region thereof. An image-side surface of the seventh lens element is concave in a paraxial region thereof, and the image-side surface of the seventh lens element has at least one inflection point.

Optical lens assembly, image capturing unit and electronic device

An image capturing 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 fourth lens element has positive refractive power, the object-side surface of the fourth lens element is concave in a paraxial region thereof, and the image-side surface of the fourth lens element is convex 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 image capturing system has at least one inflection point in an off-axis region thereof.

Image capturing system, image capturing unit and electronic device

An optical imaging system 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 of the optical imaging system has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is concave in a paraxial region thereof, and the image-side surface of the first 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 image-side surface of the fourth lens element is concave in a paraxial region thereof, and the image-side surface of the fourth lens element has at least one convex shape in an off-axis region thereof.

Optical imaging system comprising four lenses of - -+-, +-+-, +++- or -++- refractive powers, image capturing unit and electronic device

Optical imaging system comprising four lenes of &#x2212;&#x2212;+&#x2212;, +&#x2212;+&#x2212;, +++&#x2212; or &#x2212;++&#x2212; refractive powers, image capturing unit and electronic device

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.

Imaging optical lens assembly, image capturing unit and electronic device

An optical imaging lens assembly includes three lens elements which are, in order from an object side to an image side: a first lens element, a second lens element and a third lens element. Each of the three lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the first lens element is concave in a paraxial region thereof. The object-side surface of the first lens element is aspheric and has at least one inflection point. The object-side surface of the first lens element has at least one critical point in an off-axis region thereof. The optical imaging lens assembly has a total of three lens elements.

Optical imaging lens assembly, image capturing unit and electronic device

An imaging optical system includes six 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, 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. At least one of the six lens elements is a freeform lens element, and at least one of the object-side surface and the image-side surface of the at least one freeform lens element is a freeform surface.

Imaging optical system, image capturing unit and electronic device

An electronic device includes an optical lens assembly. The optical lens assembly includes four lens elements which are, in order from an outer side to an inner side: a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has negative refractive power. An outer-side surface of the first lens element is concave in a paraxial region thereof and has at least one convex critical point in an off-axis region thereof. The third lens element has positive refractive power. The fourth lens element has an inner-side surface being convex in a paraxial region thereof and having at least one concave critical point in an off-axis region thereof. The optical lens assembly has a total of four lens elements.

Growing community of inventors

Taichung, Taiwan

Yu Jui Lin