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US 12,761,448 B2Granted
Optical lens assembly
AssigneeNewmax Technology Co., Ltd.
InventorsChia-Wei Liao, Ruei-Tze Hong
Life of this patent
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Abstract
An optical lens assembly includes a stop, and includes, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; wherein a maximum field of view of the optical lens assembly is FOV, an entrance pupil diameter of the optical lens assembly is EPD, and the following condition is satisfied: 254.30<FOV*EPD<418.64.
Claims19
An optical lens assembly comprising a stop, and in order from an object side to an image side, comprising:
- a first lens with refractive power;
- a second lens with negative refractive power, comprising an object-side surface and an image-side surface, wherein at least one of the object-side surface and the image-side surface of the second lens is aspheric;
- a third lens with refractive power, comprising an object-side surface and an image-side surface, wherein the object-side surface of the third lens is convex near the optical axis;
- a fourth lens with refractive power, comprising an object-side surface and an image-side surface, wherein the object-side surface of the fourth lens is convex near the optical axis;
- a fifth lens with refractive power, comprising an object-side surface and an image-side surface, wherein at least one of the object-side surface and the image-side surface of the fifth lens is aspheric;
- and
- a sixth lens with refractive power, comprising an object-side surface and an image-side surface, wherein the object-side surface of the sixth lens is convex near the optical axis, the image-side surface of the sixth lens is concave near the optical axis, and at least one of the object-side surface and the image-side surface of the sixth lens is aspheric;
- wherein a maximum field of view of the optical lens assembly is FOV, an entrance pupil diameter of the optical lens assembly is EPD, a curvature radius of the object-side surface of the third lens is R5, a curvature radius of the image-side surface of the third lens is R6, a focal length of the third lens is f3, a central thickness of the third lens along the optical axis is CT3, and the following condition is satisfied:
- 254.30°*mm<FOV*EPD<418.64°*mm;
- and −40.49< (R5*R6)/(f3*CT3)<−10.00.
7 more elements
Dependencies are inferred from the claim text.