Samsung Electro-mechanics Co., Ltd.

In Do Seo

Yong Joo Jo

Il Yong Park

Dong Shin Yang

Sot Eum Seo

Ju Sung Park

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens disposed sequentially from an object side The first lens and the second lens each have a positive refractive power, and the third lens has a negative refractive power, and D12/D_MAX<0.15 is satisfied, where D12 is a distance on an optical axis between an image-side surface of the first lens and an object-side surface of the second lens, and D_MAX is a greatest distance among distances between neighboring lenses.

Optical imaging system including eight lenses of ++-+--+-, ++-+-++-, ++---++ - or ++---++- refractive powers

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens having negative refractive power, a fifth lens having positive refractive power, a sixth lens having a convex image-side surface, and a seventh lens, disposed sequentially from an object side. The optical imaging system satisfies −5.0<f2/f<−2.0, where f is a focal length of the optical imaging system and f2 is a focal length of the second lens. An F No. of the optical imaging system is less than 1.7.

Optical imaging system

An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens having negative refractive power, a fifth lens having positive refractive power, a sixth lens having a convex image-side surface, and a seventh lens, disposed sequentially from an object side. The optical imaging system satisfies &#x2212;5.0&#x3c;f2/f&#x3c;&#x2212;2.0, where f is a focal length of the optical imaging system and f2 is a focal length of the second lens. An F No. of the optical imaging system is less than 1.7.

A mobile device and lens module including a lens barrel and a plurality of lenses sequentially stacked from an object side to an image side in the lens barrel, wherein the plurality of lenses includes one or more D-cut lenses having respective straight line rim portions, and wherein a straight line portion of a D-cut lens, of the one or more D-cut lenses, overlaps an image sensor for imaging light passing through the plurality of lenses.

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Suwon-si, South Korea

In Do Seo