公开(公告)号：US20180259747A1

公开(公告)日：2018-09-13

申请号：US15974005

申请日：2018-05-08

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Cheng-Chen Lin ,  Chun-Yen Chen ,  Wei-Yu Chen

IPC: G02B13/00 ,  G02B5/20 ,  G02B9/62

CPC classification number: G02B13/0045 ,  G02B5/208 ,  G02B9/62

Abstract: An imaging optical lens system includes six lens elements, the six lens elements being, 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. The first lens element has positive refractive power. The third lens element has an image-side surface being concave in a paraxial region thereof. The fifth lens element has an object-side surface and an image-side surface being both aspheric. The sixth lens element has an image-side surface being concave in a paraxial region thereof, wherein an object-side surface and the image-side surface of the sixth lens element are both aspheric, and the image-side surface of the sixth lens element includes at least one convex critical point in an off-axial region thereof.

公开(公告)号：US20170023768A1

公开(公告)日：2017-01-26

申请号：US14834629

申请日：2015-08-25

Applicant: LARGAN PRECISION CO., LTD.

Inventor： Dung-Yi Hsieh ,  Chun-Yen Chen ,  Chun-Che Hsueh ,  Hsin-Hsuan Huang

IPC: G02B13/00 ,  G02B1/04 ,  G02B9/60

CPC classification number: G02B13/0045 ,  G02B9/60

Abstract: An optical photographing lens assembly includes, 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. The first lens element with positive 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. The second lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof. The third lens element has two surfaces being both aspheric. The fourth lens element with negative refractive power has an image-side surface being concave in a paraxial region thereof, wherein two surfaces thereof are aspheric. The fifth lens element has an image-side surface being convex in a paraxial region thereof, wherein two surfaces thereof are aspheric.

Abstract translation: 光学摄影镜头组件从物体侧到像侧依次包括第一透镜元件，第二透镜元件，第三透镜​​元件，第四透镜元件和第五透镜元件。 具有正折光力的第一透镜元件具有在其近轴区域中凸出的物体侧表面，并且在其近轴区域中的图像侧表面是凹形的。 具有负屈光力的第二透镜元件具有在其近轴区域中凹陷的图像侧表面。 第三透镜元件具有两个非球面的表面。 具有负屈光力的第四透镜元件在其近轴区域具有凹入的图像侧表面，其中两个表面是非球面的。 第五透镜元件具有在其近轴区域中凸出的图像侧表面，其中两个表面是非球面的。