Compact lens optical system and digital camera module including the same
AssigneeSamsung Electronics Co., Ltd.
InventorJin-seon Seo
Life of this patent
Estimating the term…
Abstract
A lens optical system includes a first optical system and a second optical system. The lens optical system includes at least one reflection member to selectively redirect optical paths of light representing objects from first and second directions toward a photographing device. The first optical system includes, in order from an object to the photographing device along the optical axis, a first lens group including a first reflection member, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power. The second optical system shares at least one optical element with the first optical system.
Claims19
A lens optical system comprising:
- a first optical system comprising, in order from an object to an image sensor side along an optical axis:
- a first lens group including a first reflection member that selectively redirects an optical path of light representing the object from a first direction toward the image sensor side;
- a second lens group having a negative refractive power;
- a third lens group having a positive refractive power;
- and
- a fourth lens group having a positive refractive power,
- wherein, during zooming from a wide mode to a tele mode, the first lens group is fixed, the second lens group moves toward the image sensor side and then toward the object side, the third lens group moves toward the object side, and the fourth lens group performs focusing.
A digital camera module comprising:
- a photographing device at an image sensor side;
- and
- a lens optical system comprising:
- a first optical system comprising, in order from an object to the image sensor side along an optical axis:
- a first lens group including a first reflection member that selectively redirects an optical path of light representing the object from a first direction toward the image sensor side;
- a second lens group having a negative refractive power;
- a third lens group having a positive refractive power;
- and
- a fourth lens group having a positive refractive power,
- wherein, during zooming from a wide mode to a tele mode, the first lens group is fixed, the second lens group moves toward the image sensor side and then toward the object side, the third lens group moves toward the object side, and the fourth lens group performs focusing;
- and
- a second optical system comprising a second reflection member that selectively redirects an optical path of light representing an object from a second direction toward the image sensor side, wherein the second optical system shares at least one optical element with the first optical system,
- wherein the first optical system performs general photography and the second optical system performs self photography or a video call.
Dependencies are inferred from the claim text.