Newmax Technology Co., Ltd.

Kun-Rui Wu

Chun-Sheng Lee

Chi-Chang Wang

Hai-Jo Huang

An optical lens assembly includes, in order from the object side to the image side: a first lens with positive refractive power, a stop, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, wherein a focal length of the optical lens assembly is f, the optical lens assembly has a maximum view angle (field of view) FOV, and following condition is satisfied: 0.16<f/FOV<1.27, so as to achieve the telephoto effect of the optical lens assembly.

Optical lens assembly and photographing module

An optical lens system includes, in order from the object side to the image side: a stop, a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power, wherein a distance from an image-side surface of the third lens to an image plane along an optical axis is BFL, a distance from an object-side surface of the first lens to the image plane along the optical axis is TL, following condition is satisfied: 0.38<BFL/TL<0.58. Such arrangements can meet the requirement of miniaturization under the condition of longer back focal length.

Optical lens system and photographing module

A four-piece infrared wavelength lens system includes, in order from the object side to the image side: a first lens element with a positive refractive power, a stop, a second lens element with a refractive power, a third lens element with a positive refractive power, a fourth lens element with a negative refractive power, wherein a focal length of the first lens element and the second lens element combined is f12, a focal length of the third lens element and the fourth lens element combined is f34, and they satisfy the relation: 0.2&#x3c;f12/f34&#x3c;1.4. Such a system has a wide field of view, large stop, short length and less distortion.

Four-piece infrared single wavelength lens system

A four-piece dual waveband optical lens system includes, in order from the object side to the image side: a stop; a first lens element with a positive refractive power having an object-side surface being convex near an optical axis, an image-side surface being convex near the optical axis; a second lens element with a negative refractive power having an object-side surface being concave near the optical axis, an image-side surface being convex near the optical axis; a third lens element with a positive refractive power having an object-side surface being concave near the optical axis, an image-side surface being convex near the optical axis; a fourth lens element with a negative refractive power having an object-side surface being convex near the optical axis, an image-side surface being concave near the optical axis, which has a short length and good performance without re-focusing in visible light and infrared dual waveband.

Four-piece dual waveband optical lens system

A four-piece optical lens system includes, in order from the object side to the image side: a stop; a first lens element with a positive refractive power; a second lens element with a negative refractive power; a third lens element with a positive refractive power; a fourth lens element with a negative refractive power, wherein a focal length of the first lens element and the second lens element combined is f12, a focal length of the third lens element is 13, and they satisfy the relation: 0.6&#x3c;f12/f3&#x3c;1.6, such arrangements not only can be applied to a portable electronic product, but also has a long focal length, high pixel and low height. Moreover, the resolution can be improved evidently.

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Taichung, Taiwan

Kun-Rui Wu