Optical imaging system and camera module | Patent Publication Number 20200103615
US 20200103615 A1Publication DateApr 2, 2020
Original AssigneeSamsung Electronics
Current AssigneeSamsung Electronics
Inventor/ApplicantsKyu Min CHAE
Kyu Min Chae
Eun Chong Lee
Eun Chong LEE
Kyu Min Chae
Eun Chong Lee
Eun Chong LEE
International
1
G02B
National
0
Field of Search
0
1. An optical imaging system, comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens disposed in order from an object side, wherein one or more of the lenses are disposed between a stop and an imaging plane one of which is made of a glass material, four or more of the lenses are made of a plastic material, and the optical imaging system satisfies a conditional expression:
Gf/f<3.5where f is a focal length of the optical imaging system, and Gf is a focal length of the lens made of a glass material and disposed between the stop and the imaging plane. 13. An optical imaging system, comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens disposed in order from an object side, wherein one or more of the first to sixth lenses is disposed between a stop and an imaging plane and of those, one or more comprises positive refractive power and one is made of a glass material, and four or more of the first to sixth lenses are made of a plastic material. 18. A camera module, comprising: a housing having a first linear coefficient of thermal expansion, and comprising an imaging plane; and a lens barrel having a second linear coefficient of thermal expansion disposed in the housing, and comprising: an optical imaging system to focus incident light on the imaging plane, the optical imaging system comprising: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens disposed in order from an object side in the lens barrel, wherein one or two of the lenses are made of a glass material and four or five are made of a plastic material, and one of the lenses made of a glass material is disposed between a stop of the optical imaging system and the imaging plane of the housing.
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